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Jeep Wrangler JK
JK General Discussion
3.6 Pentastar Misfire on Cylinders 1, 3, & 5
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<blockquote data-quote="MDuncan" data-source="post: 430072" data-attributes="member: 18634"><p>Hi Artisanau,</p><p></p><p>Happy to jump back in. </p><p></p><p><u>To make sure I understand:</u></p><p>- Your jeep is misfiring on #6 or all cylinders on that bank?</p><p></p><p><u>To answer what I have done to my jeep:</u> </p><p>Thus far I have not been able to completely cure my misfire(s), but I have tried some additional fixes sense my original Post. </p><p></p><p><u>They were:</u></p><p>- Full Engine wire harness [USER=1]@Chris[/USER] </p><p>- Partial wire harness for left bank injectors</p><p></p><p>I do continue to think my issue is electrical, Fuel, or Intake leak (causing it to run slightly lean). This would all make sense considering you need three things to get an engine running: fuel, air, & spark.</p><p></p><p></p><p><u>So, in order, what am I going to do next?</u> </p><p>- Check fuel pressure from the tank to fuel rail and replace the pump if low pressure is found</p><p>- Replace PCV valve </p><p>- Replace all breather/intake hoses</p><p></p><p><u>What else is going on?</u></p><p>- Well, it just threw P0128 - Thermostat Rationality - Likely the thermostat is stuck open.</p><p></p><p></p><p></p><p>Apologies for not being much more help,</p><p>Matt</p></blockquote><p></p>
[QUOTE="MDuncan, post: 430072, member: 18634"] Hi Artisanau, Happy to jump back in. [U]To make sure I understand:[/U] - Your jeep is misfiring on #6 or all cylinders on that bank? [U]To answer what I have done to my jeep:[/U] Thus far I have not been able to completely cure my misfire(s), but I have tried some additional fixes sense my original Post. [U]They were:[/U] - Full Engine wire harness [USER=1]@Chris[/USER] - Partial wire harness for left bank injectors I do continue to think my issue is electrical, Fuel, or Intake leak (causing it to run slightly lean). This would all make sense considering you need three things to get an engine running: fuel, air, & spark. [U]So, in order, what am I going to do next?[/U] - Check fuel pressure from the tank to fuel rail and replace the pump if low pressure is found - Replace PCV valve - Replace all breather/intake hoses [U]What else is going on?[/U] - Well, it just threw P0128 - Thermostat Rationality - Likely the thermostat is stuck open. Apologies for not being much more help, Matt [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
3.6 Pentastar Misfire on Cylinders 1, 3, & 5
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