rough idle for approx 30 seconds
#21
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And it still runs rough, even with the sticker??? That's Unheard of!
Trouble is, there are so many sensors and such with the fingers in the pie for fuel mixture. Any one of which could be the culprit. It sure sounds like the O2 heaters aren't quite doing their job though.....
Trouble is, there are so many sensors and such with the fingers in the pie for fuel mixture. Any one of which could be the culprit. It sure sounds like the O2 heaters aren't quite doing their job though.....
#27
Mine was doing this or something similar to it, it was doing it whenever i came to a idle, warm or cold, and it got bad enough it would let air in to start it without adding throttle, so i replaced the IAC, that fixed it, sort of. Mine started doing the same thing OP has stated about firing it up, waiting for a little bit and then mine also drops to maybe 200-300rpms and i hear the same air leak/sucking noise.
A week or so ago my truck threw a CEL up for upstream o2 wiring, not the sensor itself (but it may very well be the culprit) but the CEL went away after a couple days
A week or so ago my truck threw a CEL up for upstream o2 wiring, not the sensor itself (but it may very well be the culprit) but the CEL went away after a couple days
#28
Mine did this on a cold start when I got the truck and it had 74000 miles.
I replaced the upstream o2 sensor for the heck of it a couple years after I got it with a Bosch.
It still did it.
Just last year I replaced them both with NTK sensors because of an intermittent (and annoying) CEL for the downstream o2 sensor .
It still does it.
I replaced the upstream o2 sensor for the heck of it a couple years after I got it with a Bosch.
It still did it.
Just last year I replaced them both with NTK sensors because of an intermittent (and annoying) CEL for the downstream o2 sensor .
It still does it.
#29