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Jeep Wrangler YJ
YJ General Discussion
Engine Stalls When gets to Operating Temperature
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<blockquote data-quote="Photojeeper" data-source="post: 430629" data-attributes="member: 19686"><p>Well the culprit is/was the O2 sensor, although no codes were in the ECM and the CEL did not go on as it should have. Got a new Bosch O2 sensor. One thing I am going to change is the thermostat. I believe that when the shop got a new on for the head they went by the book. The 4.2 uses a 185 degree, but i have Mopar EFI system which requires a 195 degree thermostat. I did run the engine and when it got to the temperature that it would start stalling it didn't. I gave it a short test drive and it was fine. I will do more testing after the thermostat is installed.</p></blockquote><p></p>
[QUOTE="Photojeeper, post: 430629, member: 19686"] Well the culprit is/was the O2 sensor, although no codes were in the ECM and the CEL did not go on as it should have. Got a new Bosch O2 sensor. One thing I am going to change is the thermostat. I believe that when the shop got a new on for the head they went by the book. The 4.2 uses a 185 degree, but i have Mopar EFI system which requires a 195 degree thermostat. I did run the engine and when it got to the temperature that it would start stalling it didn't. I gave it a short test drive and it was fine. I will do more testing after the thermostat is installed. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Engine Stalls When gets to Operating Temperature
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