Running rough when cold
Thread Starter
Instructor
Joined: Apr 2002
Posts: 110
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From: Warren Oh
Running rough when cold
When I start my 90 l98 if it is cold will be very sluggish for the first 3 minutes of driving and then will have a series of backfires and then after that it will run fine. If I start it and let it Idle for 3 min and go to drive it, it will run great. It is like it needs to get to a certain temp and then runs fine. Any ideas?
Safety Car
Joined: Feb 2000
Posts: 4,230
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From: VA
Cruise-In II Veteran
Re: Running rough when cold (SoupNazi)
I'm no expert. But kinda sounds like the O2 sensor. Seems like the computer is not switching in or out of closed or open loop.
I'd have to read up on which happens first.
I'd have to read up on which happens first.
