Jeep jk code p0128

Description. How to Fix. What does this mean? Possible Causes. NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that …

AUBURN HILLS, Mich., March 23, 2023 /PRNewswire/ -- Trail badge secured! The final grouping of Jeep® brand and Jeep Performance Parts by Mopar con... AUBURN HILLS, Mich., March 23,...Walk through the steps for replacing a thermostat and housing. Once that is done follow up with bleeding the air out of the system. These steps will clear ...What to watch for today What to watch for today US retail sales on a roll? Analysts predict a 0.8% increase in sales in June, the biggest jump in four months. The Empire State manu...2011 3.8L jeep jk. received P0128 code, replaced thermostat and ECT.. Hooked up a scanner and drove on highway 65mph, coolant temp readings fluctuate between 168 - 175. When stopped or at slower speeds temperature will rise but will suddenly decrease when speed picks up. Stopped and idled noticed fan kicked in and the scanner was only …It could take up to 100 miles, with multiple restarts included. Clear the codes with your Jscan, check for others and drive more.. This is not exclusively a Jeep situation had same on a Chev Equinox previously. Good Luck. Vaya Con Dios..1 JKU & 1 JT Mojave. JKU is mbr of Real Men Use 3 Pedals" Club.. 2013 JKU and 2021 Mojave..Of course, they can't get it looked at in a timely fashion, so I'll do it myself. On the 2013 Wrangler JK, I have had the P0128 light on since having the water pump squeal replacement. Last week I replaced the thermostat (and housing-one piece) to the tune of ~$75, including a gallon of the $26 dollar OAT antifreeze. Light decided to come back on.What is P0128 Jeep JK Diagnostic Code? This is a DIY video for Jeep JK Thermostat Replacement...Parts:1) Mopar Thermostat w/housing - https://www.amazon.com...Save on your password security with Keeper Security promo codes. Get the latest on Keeper Security promo codes, coupons, and May sale on PCWorld. PCWorld’s coupon section is create...

What the P0128 code means. The P0128 code means that the engine coolant is not getting warm enough, fast enough. In other words, there is a problem with the engine operating temperature not being reached within a certain amount of time. The Engine Control Module (ECM) determines this length of time based on ambient temperature.Code P0128 2013 JK. Checked my coolant level in the radiator and had to add a little. Overflow bottle was normal level. After a drive I discovered a very small leak coming from under the radiator cap. I replaced the cap with the latest upgrade, 17 PSI cap which is down from the original 18 psi cap. After a couple of short trips of 12 miles CEL ...Feb 3, 2021 · Marissawalkerjones94 Discussion starter. 1 post · Joined 2020. #1 · Feb 3, 2021. I have a 2015 Jeep Wrangler with thermostat rationality throwing a code on my jeep. The tech said it could just be a sticking thermostat but upon reading it could be an engine coolant temp sensor. My temp runs normal on my jeep, & everything runs normal. Turn on the motor and top off fluid as it fills in, once it doesn’t take no more close the radiator cap. Now let the motor run for a few minutes while it gets hotter and once 5-10 minutes have gone by turn it off and open the bleeder valve. This is how I’ve done it previously. Repeat the bleeder procedure twice or 3 times and you should be ...1 post · Joined 2012. #11 · Feb 20, 2019. 2012 JKUR with the same problem. Check engine light and no codes either with my reader or the ignition key method. I had recently fueled up at a sketchy mini mart and thought that might be the culprit. Regardless, I checked the gas cap (was fine) and disconnected the battery for 10 minutes and the ...SpottyJ. 212 posts · Joined 2013. #2 · Feb 4, 2020. I have a 2013 Wrangler JK, last week, at 87K, it threw Code P0305. Started running rough at idle. Bought it dealer, after they tore it apart, they confirmed a bad head. They said new head is …107 posts · Joined 2013. #1 · Mar 23, 2015. I recently got a code "P0128 thermostat rationality" on my 2015 Jeep SRT. I first had a Jet 180 thermo and recently switched to a Mishimoto 180. Anybody else ever get this code? Is there a way to clear and see if it comes back without going to dealer? Like.T. tonydee Discussion starter. 37 posts · Joined 2017. #1 · Jan 24, 2020. Hi, In my 2013 JKU (40,000 mi) I'm getting a P0128 code. This is happening frequently here in south east Pennsylvania in the winter. It did happen once in the summer. I keep clearing the code with my ODB II scanner. The temp is running 169-174 deg F according to the OBD ...

P0128 - Thermostat Repalcement Question. 2013 JK. Recently started getting cold here in Texas. Had the Check Engine light come on with this stupid code. Reset, warmed up and code did not come back. Got cold again and it come on again, sot its on all the time. Did the research to the Thermostat and/ or the Temp Sensor on the side …21. Location. Louisiana. Jan 6, 2023. #1. I need a reliable and quick response to my concern. My check engine light is on and I checked for the code. It shows me the P0128 code related to the coolant system running low temperature. I read somewhere that the risk is low, but should get it checked out within a month.CMSRock. 747 posts · Joined 2020. #13 · Jan 4, 2024. The p0128 shows up when the coolant temp doesn't come up fast enough or not at all, eventually depending on outdoor temp and travel speed it will get warm enough to bring up gage and give you heat but the code was set because it didn't warm up in the expected time.Runs for as few hours then the Engine light comes back on, Turn the key three times to get the code P0128 then wait a minute or two than says Done, hook my computer to it says P0128. ... If you want to drive the Jeep while you wait for an OEM part you'll have to use an aftermarket part tl the OEM arrives. ... Follow the instructions and I even ...I am getting the following codes: U140A Implausible Right Front Wheel Speed Signal Received. C1015 Right Front Wheel Speed Sensor Circuit. The funny thing is that the ABS and traction control warning lights only come on when I turn my steering wheel all the way to the left (while driving slowly or even while standing still!).

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Nov 5, 2018 · Fixing P0128 in the Jeep Cherokee is usually a pretty easy thing to do since, 90% of the time, a stuck thermostat will cause the problem. Here are the most common causes of P0128: Thermostat Stuck Open – Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows ... To reset the p0128 code on a jeep wrangler, disconnect the battery for a few minutes and then reconnect it. When the code reappears, it indicates a persistent issue that needs to be fixed. The p0128 code is related to the engine coolant temperature being below the expected range. This could be caused by a faulty thermostat, a coolant leak, or a ... #1 · Jan 27, 2023. Got a check engine light a couple months ago. P0128. Since then, the CEL went away on its own. My Jeeps temp has been right in the center. No overheating. The air blows very hot from the vents. I have not had any heat issues before or after. What are your opnion's on this? Should I still replace the thermostat and coolant?Save on your password security with Keeper Security promo codes. Get the latest on Keeper Security promo codes, coupons, and May sale on PCWorld. PCWorld’s coupon section is create...

Jan 20, 2022 · The generic P0128 code stands for “Engine Coolant Temperature Below Thermostat Regulating Temperature”. This basically means that the coolant in the engine isn’t reaching the ideal operating temperature and that the engine is essentially running cold. While it’s not as bad as having the engine run too hot (for obvious reasons), a cold ... 2008 JK getting code P0128. ... I pulled the old key dance trick and got code P0128 - faulty thermostat - so I have changed that AND the coolant temp. sensor but the motor still hacks and snorts; and the engine light flashes when i hit 1500 rpm. ... A forum community dedicated to all jeep owners and enthusiasts. Come join the discussion about ...2016 JKUHR Billet Silver M/T - (current odometer 53k, paid $35,500 OTD with 13.3k miles on 2/17/2018) - AEV 2.5 + Geo - Milestar 315 Patagona Mt's - Pro Comp 7069 FB Wheels - Rugged Ridge Hurricane Fender Flares - Poison Spider Bruisers and Rocker Knockers - RR Pioneer Platform - Bushwacker Sill Plate - Rigid Ds - Warn VR10-S - Teraflex HD Carrier,TB and SS - AEV Diff Covers - ARB Compact - 2x ...P0128 code: replacing your 2012-2017 jeep jk thermostat Misfire jeep fix. Jeep wrangler tj p0456 p0455 trouble evac repair codes2012 jeep grand cherokee/wrangler 3.6 thermostat p0128 code .. 2012 Jeep Grand Cherokee/Wrangler 3.6 Thermostat P0128 code - YouTube. Check Details. P0128 Jeep JK Diagnostic Code, Thermostat …Wrangler JK (Model years 2007–2018) JK Technical Discussion ... Got a 2016 wrangler with the 3.6l getting a code p0128. question the temp sensor cause it warms up fast and is normal on the gauge dash says 190 normal driving but got up to 220 today sitting and the fan never kicked on. ... A forum community dedicated to Jeep Wrangler owners …Aug 22, 2018 · I just recently re-entered the Jeep world with a 2012 JKU sport auto. About two weeks ago while driving my jeep threw three codes. P0128 (coolant temp low), P0306 (misfire on cylinder 6) and random misfire. No real drivability problems other than a slight bog when the jeep shifted into third gear. Jan 24, 2020 · T. tonydee Discussion starter. 37 posts · Joined 2017. #1 · Jan 24, 2020. Hi, In my 2013 JKU (40,000 mi) I'm getting a P0128 code. This is happening frequently here in south east Pennsylvania in the winter. It did happen once in the summer. I keep clearing the code with my ODB II scanner. The temp is running 169-174 deg F according to the OBD ... Planning a move is difficult, but it can be far less so if you hire the right mover. Read our JK Moving Services review to learn about their services and costs. Expert Advice On Im...What Does Code P0128 Mean? P0128 definition: Coolant Thermostat Temperature Below Regulating Temperature. Issue Severity: LOW– Continued driving …Jan 24, 2024 · Jeep Error Code P0128 refers to a diagnostic trouble code that indicates a potential issue with the cooling system. When this code appears, it means that the engine coolant temperature does not reach the expected operating temperature within a specified time frame. What to watch for today What to watch for today US retail sales may rise for the third straight month. Analysts predict a 0.8% increase in sales in June, the biggest jump in four m...

Turn on the motor and top off fluid as it fills in, once it doesn’t take no more close the radiator cap. Now let the motor run for a few minutes while it gets hotter and once 5-10 minutes have gone by turn it off and open the bleeder valve. This is how I’ve done it previously. Repeat the bleeder procedure twice or 3 times and you should be ...

The engine code P0128 in a Jeep Wrangler refers to a faulty thermostat or coolant temperature sensor. It indicates that the engine is not reaching its operating temperature within a specified time frame. Causes of Engine Code P0128 in a Jeep Wrangler. The potential causes of engine code P0128 in a Jeep Wrangler can include:P0128 Code - How To Replace Jeep Wrangler Coolant Sensor, Thermostat & Bleeding Coolant System - YouTube. Just Empty Every Pocket. 2.52K subscribers. …2013 JK with Mopar 2in lift on Pinter Silver wheels with BF KO2 35in. Save Share. Like. ... P0128 code definition Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) What the P0128 code means The P0128 code means that the engine coolant is not getting warm enough, fast enough. ... A forum community …Walk through the steps for replacing a thermostat and housing. Once that is done follow up with bleeding the air out of the system. These steps will clear ...I am getting the following codes: U140A Implausible Right Front Wheel Speed Signal Received. C1015 Right Front Wheel Speed Sensor Circuit. The funny thing is that the ABS and traction control warning lights only come on when I turn my steering wheel all the way to the left (while driving slowly or even while standing still!).Jan 3, 2023 ... Looks easy enough. My error code was also P0218 - Thermostat Rationality (replace thermostat). I had to wait a couple of days for warmer ...P0128 Code and Coolant - JK 2012 Rubicon. Okay, so my engine light came on today. Stopped by the auto parts store to have the code checked. Came back P0128 stating coolant temp below regular temp. So the guy suggested a thermostat said it is quite common.The engine code P0128 in a Jeep Wrangler refers to a faulty thermostat or coolant temperature sensor. It indicates that the engine is not reaching its operating temperature within a specified time frame. Causes of Engine Code P0128 in a Jeep Wrangler. The potential causes of engine code P0128 in a Jeep Wrangler can include:It could take up to 100 miles, with multiple restarts included. Clear the codes with your Jscan, check for others and drive more.. This is not exclusively a Jeep situation had same on a Chev Equinox previously. Good Luck. Vaya Con Dios..1 JKU & 1 JT Mojave. JKU is mbr of Real Men Use 3 Pedals" Club.. 2013 JKU and 2021 Mojave..

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Jul 4, 2019 ... Diagnosis and fix for the p0113 CEL check engine light code for the 3.6L Pentastar engine for Jeep, Dodge, Chrysler, and Ram.Make: Jeep. Code: P258B. Definition: Electric Vacuum Pump Performance. Description: The Electric Vacuum Pump (EVP) system is installed to provide supplemental vacuum to the brake booster, when the engine vacuum supply is low. The pump is connected to the engine and the brake booster through a series of hoses and one-way flow check valves.Feb 8, 2022 · P0128 Jeep Wrangler coolant sensor replace diy. Code P0128 could be either the thermostat or the coolant sensor .Today I replaced the coolant sensor on our 2... Fault Code P0128 advice. ... 12 JK, 3.5" Teraflex/Franken lift, Bilstein 5100's, BFG KM3's 37x12.5/R17 ... Last time out, I let the Jeep sit for 5 minutes idling, saw the temp rise up to 225ish and then saw the radiator fan kick on and the temp dropped back down. So I don't think the thermostat was the issue, unless I just need to pull the ...Tweet. To check your JK Codes, use this sequence on your ignition. Insert Ignition Key. Turn vehicle On-Off-On-Off-On. Codes will be shown on the Odometer screen. B1402 - Front Left Audio Speaker Output Circuit High. B1403 - Front Left Audio Speaker Output Circuit Open. B1405 - Front Right Audio Speaker Output Circuit Low.What to watch for today What to watch for today China may report grim second quarter GDP figures. Economists expect growth to slow to 7.5% on a yearly basis, the slowest pace since...If the coolant in the radiator is properly topped off and there's no issue with the radiator cap and the coolant (HOAT for a 2008) is still within 5 yrs./100K miles, this could be the issue: Update - Dealer called - TSB for P2181 code. NUMBER: 18-015-10 REV. GROUP: Vehicle Performance. DATE: August 12, 2010.Jan 6, 2022 · 24 posts · Joined 2014. #1 · Jan 5, 2022. Hey everyone, I got a check engine light with the code of P0128 on my 2014 wrangler and going to replace the thermostat housing. I bought the mopar housing P/N: 5184651AH and a gallon of premixed coolant P/N: 68163849AB for $65 on amazon. I called the local dealership and a was quoted $107 for the ... Tools Used:Milwaukee 2767-20 M18 Fuel High Torque 1/2-Inch Impact Wrench https://amzn.to/INNOVA 3612 Milwaukee Electric Tools 2557-20 M12 Fuel 3/8" RATCHETht...DATE: August 12, 2010. SUBJECT: Flash: MIL Illumination For P2181 - Cooling System Performance. OVERVIEW: This bulletin involves flash reprogramming the Powertrain Control Module (PCM) with new software. MODELS: 2008 (JK) Wrangler. NOTE: This bulletin applies to JK vehicles equipped with a 3.8L engine (Sales code EGT).2016, 3.6 Check Engine light P0128 coolant temp code. ... I don’t know if anyone has the FSM for JKs. The values would be in there I’m almost sure. ... A forum community dedicated to Jeep Wrangler owners and enthusiasts. Come join the discussion about reviews, performance, trail riding, gear, suspension, tires, classifieds, … ….

Watch as I replace the thermostat on my 2015 Jeep Wrangler Unlimited after getting the P0128 Error Code. Tools Used:Milwaukee 2767-20 M18 Fuel High Torque 1/2-Inch Impact Wrench https://amzn.to/INNOVA 3612 Milwaukee Electric Tools 2557-20 M12 Fuel 3/8" RATCHETht...The code is P2096. I have only heard of TJs with this code, not JKs. Here's what I was doing: I was driving at about 50mph for 30 miles with about 4" of snow on the road. I had the gas pedal pushed way down just to maintain my speed. Under normal conditions, my Jeep would have been doing 90+mph with accelerator pushed so far down.Nov 21, 2023 · Code P0128 2013 JK. Checked my coolant level in the radiator and had to add a little. Overflow bottle was normal level. After a drive I discovered a very small leak coming from under the radiator cap. I replaced the cap with the latest upgrade, 17 PSI cap which is down from the original 18 psi cap. After a couple of short trips of 12 miles CEL ... I am getting B16FD code on my 2014 jk which indicates right fog lamp circuit high. Both my fog lamps are working fine. ... P0128. what to do if there's sludge in my radiator overflow ... I have a 2001 Jeep JK Wrangler and need the front fog lights wiring diagram. The front fog lights do not work. I have check both lamps and they are ok.Yes, park on an incline and burp it, but notice that on the thermostat there is a round plastic screw. That is there to help bleed the system. You can get air trapped behind the t-stat and cracking the screw will help the air to get out. Will take much less burping letting the air out there. Wolfslash16 and geeve420.Learn the difference between source code and object code within computer programming. Each term has its own use; deciphering them can be difficult at first, but with this easy-to-f...P0128 Thermostat gasket/Housing replacement tutorial on a 2013 Jeep Wrangler 3.6 Don't forget to like and sub! ... P0128 Thermostat gasket/Housing replacement tutorial on a 2013 Jeep Wrangler 3.6 ... Jeep jk code p0128, If you have a Jeep P0128 code, you must first diagnose the problem. Engine temperatures can be calculated and analyzed using the live data functionality of the FIXD sensor and app. RepairPal-certified shops have a minimum 12-month warranty on all repairs lasting 12,000 miles or more. It is possible that some repairs will be required to fix or ..., Before you can reset the P0128 code in your Jeep Wrangler, it is essential to locate the OBD-II port. The OBD-II port is a standardized diagnostic interface that allows you to connect an OBD-II scanner to your vehicle. In most Jeep Wrangler models, the OBD-II port is conveniently located under the dashboard on the driver’s side. ..., Feb 18, 2022 · Tools Used:Milwaukee 2767-20 M18 Fuel High Torque 1/2-Inch Impact Wrench https://amzn.to/INNOVA 3612 Milwaukee Electric Tools 2557-20 M12 Fuel 3/8" RATCHETht... , Do the following to fix Chevy code P0128. Check the coolant level: If the level is lower than the minimum, add more coolant and go for a short drive. If the code is still active, you must change the thermostat. Inspect the coolant temperature sensor: The primary coolant temperature sensor is in the cylinder head near the thermostat., How to fix p0118 p0128 for 2012 jeep Wrangler Sport Engine Coolant Temperature Sensor thermostatHow do I fix code P0118?What repairs can fix the P0118 code?R..., Code P0128 2013 JK. Checked my coolant level in the radiator and had to add a little. Overflow bottle was normal level. After a drive I discovered a very small leak coming from under the radiator cap. I replaced the cap with the latest upgrade, 17 PSI cap which is down from the original 18 psi cap. After a couple of short trips of 12 miles CEL ..., #1 · May 29, 2018. Hey Everyone, I have a 2013 Jeep Wrangler Unlimited Rubicon (just passed 60k miles) with a recurring error code P0128 that's driving me nuts. I have an …, Follow up to the original question. My CEL has been on for a few days. Finally scanned last night and got the same code P0128. Coolant was pretty low, but not below the add line. I went ahead and topped off the coolant. Was hoping that's the simple fix before replacing the thermostat. The jeep is running fine, all the temperatures seem normal., To reset the p0128 code on a jeep wrangler, disconnect the battery for a few minutes and then reconnect it. When the code reappears, it indicates a persistent issue that needs to be fixed. The p0128 code is related to the engine coolant temperature being below the expected range. This could be caused by a faulty thermostat, a coolant leak, or a ..., P0128 Code: Replacing your 2012-2017 Jeep JK Thermostat - YouTube. BullGear Off-Road. 2.26K subscribers. Subscribed. 118. 18K views 3 years ago. Watch …, 2. Turn the ignition key to the “on” position without starting the engine. 3. Access the scanner’s menu and select “Read Codes” to retrieve the P0128 code. 4. After reading the code, select “Clear Codes” or “Erase Codes” option on the scanner to reset the code. 5., Code breakers are people who use logic and intuition in order to uncover secret information. Learn more about code breakers and how code breakers work. Advertisement Information is..., P0128 Code (2017 Jeep JK) I got a code this morning on my way to work and after scanning saw that it was p0128. After researching a bit it looks like my coolant isn’t getting hot enough due to the tstat being stuck open., On May 18, JK Lakshmi Cement will report Q4 earnings.Analysts predict JK Lakshmi Cement will report earnings per share of INR 7.57.Go here to watc... JK Lakshmi Cement is reporting..., 86 posts · Joined 2015. #16 · Oct 15, 2015. Well here is a newb question. I just got the code after I started the Jeep and took off without being warm up. So the engine light pop immediately. Anyway the code is P0128 for Thermostat. So 2 questions: 1., Jan 3, 2023 ... Looks easy enough. My error code was also P0218 - Thermostat Rationality (replace thermostat). I had to wait a couple of days for warmer ..., FansEdge coupons save you 65% during March 2023 summer sale. Use our Fansedge coupons and promo codes to save an average of $65% OFF. Free US shipping on order.. PCWorld’s coupon s..., The park, along with Peak Wilderness Protected Area and Knuckles Conservation Forest, make a World Heritage Site called The Central Highlands of Sri Lanka. To see the end of the wo..., Description. How to Fix. What does this mean? Possible Causes. NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that …, Updated: July 31, 2021. The code P0128 - Coolant Temperature Below Thermostat Regulating Temperature means that the engine does not reach expected temperature after running for sufficient time, or in other words, it takes too long to warm up. Often this code causes the Check Engine light to come on and off in cold temperatures., Quick, unedited cell phone video covering P0128 Data Trouble Code (DTC) on 2013 Jeep Wrangler JKUR w/3.6L V6 caused by a faulty thermostat tripping Check Eng..., Nov 5, 2018 · Fixing P0128 in the Jeep Compass is usually a pretty easy thing to do since, 90% of the time, a stuck thermostat will cause the problem. Here are the most common causes of P0128: Thermostat Stuck Open – Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows ... , 2016 JK Rubicon Hard Rock Auto Trans 2008 Jeep Liberty Auto Trans 1988 E-150 4.9L 5 Speed Stick God Bless Our Troops. Reactions: jadehaley17601. ... After about 60 miles and 3 or 4 trips the permanent P0128 code cleared. However, when I run a live trace on the coolant temperature it comes up to about 203 - 204 deg F, which I am happy …, 2011 3.8L jeep jk. received P0128 code, replaced thermostat and ECT.. Hooked up a scanner and drove on highway 65mph, coolant temp readings fluctuate between 168 - 175. When stopped or at slower speeds temperature will rise but will suddenly decrease when speed picks up. Stopped and idled noticed fan kicked in and the scanner was only reading ..., Jun 17, 2023 · The most common cause for the P0128 code on a Jeep Wrangler is a faulty thermostat. A faulty thermostat can be what is described as a "stuck open thermostat." Other issues can be low coolant, a bad radiator fan or water pump, an inaccurate engine coolant temperature sensor (ECT sensor), or a bad engine control module. Check Out The Latest Price! , 2008 JK getting code P0128. ... I pulled the old key dance trick and got code P0128 - faulty thermostat - so I have changed that AND the coolant temp. sensor but the motor still hacks and snorts; and the engine light flashes when i hit 1500 rpm. ... A forum community dedicated to all jeep owners and enthusiasts. Come join the discussion about ..., You’ve probably seen somewhere someone saying coding vs scripting. When I first saw that, I thought that those two are the same things, but the more I learned I found out that ther..., Dec 16, 2022 · If you have a Jeep P0128 code, you must first diagnose the problem. Engine temperatures can be calculated and analyzed using the live data functionality of the FIXD sensor and app. RepairPal-certified shops have a minimum 12-month warranty on all repairs lasting 12,000 miles or more. It is possible that some repairs will be required to fix or ... , FansEdge coupons save you 65% during March 2023 summer sale. Use our Fansedge coupons and promo codes to save an average of $65% OFF. Free US shipping on order.. PCWorld’s coupon s..., I just recently re-entered the Jeep world with a 2012 JKU sport auto. About two weeks ago while driving my jeep threw three codes. P0128 (coolant temp low), P0306 (misfire on cylinder 6) and random misfire. No real drivability problems other than a slight bog when the jeep shifted into third gear., DATE: August 12, 2010. SUBJECT: Flash: MIL Illumination For P2181 - Cooling System Performance. OVERVIEW: This bulletin involves flash reprogramming the Powertrain Control Module (PCM) with new software. MODELS: 2008 (JK) Wrangler. NOTE: This bulletin applies to JK vehicles equipped with a 3.8L engine (Sales code EGT)., 4’th Cylinder. P0304 is a cylinder-specific misfire code, meaning only your Wrangler’s fourth cylinder has a misfire. Before you can even diagnose P0304 in your vehicle, you need to find the fourth cylinder’s location. On “V” configuration engines, it’ll usually be the second cylinder on the head further away from the front of the ..., P0128 Code - How To Replace Jeep Wrangler Coolant Sensor, Thermostat & Bleeding Coolant System - YouTube. Just Empty Every Pocket. 2.52K subscribers. …