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Old 12-13-2003, 11:12 AM
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gto78
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1998 explorer rough idle

ok, 3 times now i've been extremely close to being hit head on by oncoming traffic due to a seemingly uncurable stalling problem. It idles rough sometimes, and other times it seems fine. BUT when sitting at a light, waiting to turn left after the oncoming traffic has a quick opening, I start to go, I get halfway across the intersection and then without warning, it dies completely. Now its too late to stop and back up- and the cars are flying head on towards you locking up they're brakes. One time I would have been killed by the 18 wheeler that was coming if I hadnt gotten it started and moving again just in time.

I replaced the IAC, the plugs, filters and wires, and the EGR valve. I checked everywhere for intake leaks and found nothing. Changed the O2 sensors since they had plenty of mileage on em. It idles like crap still, even after 30+ tanks of every kind of injector cleaner they make. We used the snap on scanner tool to monitor things and it never acted up then. The TPS seems to move smoothly, and fuel pressure was checked and found to be around 25-30 psi. Don't know if thats normal. The intake air temp was reading a constant 120 degrees F. I also checked the fuel cap to make sure it was closing completely. The dealer checked the TB for excessive clearance and said it was ok.

It seems to only stall like that after driving on the highway and then stopping at the first light after that.