Car Shuts Down At Red Lights/Stop Signs/IDLE, Help Car Shuts Down... Options

[themanjsq]

Hello, I've recently bought a 1994 Celica ST, The car sometimes shuts down when i come to a complete stop, the rpm would fluctuate between 800-500 shake and studder then shuts off, mostly at red lights and when the car is on drive. However, if i leave it on neutral at red lights it doesn't shut off. I've went to 2 mechanics and they fixed the tps sensor which help for a few days, but then the problem occurs again. I've went to a 3rd mechanic recently and now he's saying it's the transmission and he needs to take it out to figure out the problem charging me 695.00, which i think might be b.s. so i didn't go through with it. Spark plugs & wires are already replaced with NGK, transmission fluid was replaced with toyota transmission fluid, oil change/oil filter replaced as well, ANY HELP OR SUGGESSTIONS please thank you.

This post has been edited by themanjsq: Nov 1, 2011 - 5:16 PM

[Keiri]

i'm betting all you need to do is clean the throttle body/idle air control valve.

How much does it cost to get the iac cleaned? or how much is the part plus installation?

I've been quoted between $65 and $80 dollars to have the IAC/Throttle Body cleaned at several local Toyota dealerships. Check local dealer websites for service coupons if you don't really want to do the work yourself.

Also, if you happen to know, when was the last time the O2 sensors were changed? I had a '97 Pontiac Grand Am that did almost the exact same thing your Celica is doing and it turned out to be it needed sensors replaced. Just a thought but definitely clean the TB and IAC before going for sensors.