Stalls

[MD6Planet]

My 1996 Saturn SC2 DOHC, 181,000+ miles. Stalls when I slow at lights or before turns. Not every time, never in the morning. Will restart after about 5 minutes. If I catch it hesitating and rev the engine it will not stall then or again until the next day. Have replaced plugs, wires, fuel filter. Have had injectors and throttle body cleaned. Codes only show typical for a stall. No sensor problems. Fuel pump does not seem to be leaking.
I'm tired of getting stuck in rush hour traffic. Where do I go from here? [img]{SMILIES_PATH}/sad.gif[/img]

[S.Bretz]

Try putting quarters under the egr valve to block it off. If it stops stalling, then leave the quarters or buy a new egr valve.

[MD6Planet]

I did what you suggested and the problem stopped. Got a new valve. Running great. Thanks.S.Bretz

[ProjectSW1]

Ok then... what if it's already blocked and still stalling?

Mine just started that recently

[SupraCharged007]

dynamite? [img]{SMILIES_PATH}/icon_twisted.gif[/img]

[S.Bretz]

Ok then... what if it's already blocked and still stalling?

Mine just started that recently

MOst likly the IAC is sticking from carbon. Get a wet nitrous system and use that, it should clean it out.

Or try to clean it out with t-b cleaner. You might need to remove the vavle and srub it with a cloth and put the cloth around the tip of your finger and get it in the IAC hole and twist like trying to get an itch in your ear you can't get. Aslo clean the crap around the throttle plate as a little air doesn get around that and the PCM is learneded when it was mostly clean...the crap will clog that flow up.

Leave the IAC disconnected and start the car. It should idle about 550-600 with your finger over the IAC hole. If not, adjust the throttle plate until it idles in that area. Plug the IAC plug/connetor back in and pull the PCM-1 and PCM-B located in the under hood juntion box (fuse box in the engine compartment) and turn the igintion power on to the accesorries postion for about 30 seconds.

Turn the ingtion off, replace the fuses and start the car. It probably will act funny (stall, rev high...). Let it do its thing, restart if it stalls... within about 20-30 seconds, the PCM should relearn the IAC postioning.


If the probelm still exsists, then there is the posibilty that a bad spot is present in the IAC winding due to it not moving from being stuck and the PCM trying to moving pintle...in this case, a new IAC should be installed and the relearn prosedure should be repreformed.