Rough idle after 2 min??

RockinAZJK

Caught the Bug
Long story short, just did a ton of preventative maintenance on a 3.8. Now it starts right up and runs great for about 2 1/2 minutes and then starts running really rough. Always the same amount of time. Can shut it down and start it right back up and run fine for 2 1/2 minutes again. We used a scanner and found that the upstream passenger o2 was reading different than the rest and changed it but still happening.
Anyone have any similar issues or thoughts??

Also no CEL


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BaddestCross

Active Member
Long story short, just did a ton of preventative maintenance on a 3.8. Now it starts right up and runs great for about 2 1/2 minutes and then starts running really rough. Always the same amount of time. Can shut it down and start it right back up and run fine for 2 1/2 minutes again. We used a scanner and found that the upstream passenger o2 was reading different than the rest and changed it but still happening.
Anyone have any similar issues or thoughts??

Also no CEL


Sent from my iPhone using WAYALIFE mobile app
What kind of maintenance did you do?

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Build Thread - Adventures of Fiona - https://wayalife.com/showthread.php?t=47407
 

BaddestCross

Active Member
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