Quote:
Originally Posted by kev0
Thanks for the insight. It was all the ECU. I was not giving it throttle. You might be onto something about the throttle body not opening. My RPM drops when I brake sometimes. Do you know what I should to remedy the problem? Just buy Seafoam and spray it inside the TB?
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I've never used seafoam personally. Not for any reason in particular, just haven't.
I would use a cleaner specifically for throttle bodies. Thr stuff I use is made by 3M and comes in a little black can. Spray it onto a rag, and then wipe the throttle body down till clean. The carbon build up cleans easily.
You could spray directly onto it, but the TB is coated with a non stick type coating so more gentle is better. Spraying onto it could cause more hiccups and misfires when you go to restart. It will clear out though so not a huge deal.
After that use a scanner to clear codes. This will reset adaptive values and your ECU will relearn where to put the throttle blade at any given time. The first couple startups may result in a stall and the first test drive or so may display some unusual idle characteristics, but it should figure itself out very fast.
If you don't have a scanner, disconnect the battery for a half hour, then reconnect.
Usually when I do something like that, when getting the car to relearn faster, once it's idling normally, I add loads and vary the RPM, (bring RPMS to like 3000, then release throttle and allow engine to idle. It may bog down, then should correct itself. If it stalls, just start engine again and repeat.) turn the A/C on, turn headlights on with highbeams, put both window switches in "up" position for a couple seconds when the windows are already up. (This will load up the alternator).
Once it's running on its own standing still go on a test drive, shut it down, start back up and drive again. After that if the car isn't figuring things out it's likely some other issue.