Wlcm 2 costco, I Love You
Join Date: Feb 2013
iTrader: 0 reviews
I had a similar idle issue with my car. It could be a sticky throttle plate or a dirty TPS sensor. My instructor suggested I first clean my throttle body with throttle / carb body cleaner and a toothbrush and scrub the whole inside. After than spray the body with a good amount of cleaner, get it on all sensors, etc, and start the car with the throttle to the floor, after it smooths out (it will be very rough for 30 seconds or so) rev the motor a bit. If your throttle body was filthy like mine you will spray a good amount of soot out the exhaust when you first start up.
That cleared up my issue for the most part, I don't think I could get it any better without taking it out and soaking it in a chemical bath.
A can of cleaner costs $3 and a toothbrush is often free so its worth a try.
BTW check key on engine off fuel pressure, it should be I believe about 35-37psi (I may be wrong). If the pressure is good look into doing a Fuel Pump Volume test.
Is your car exhibiting any signs of a bad or aging pump, such as the motor takes longer than about 1 crank to start, but if you turn the key on wait 5 seconds, recycle key, wait, then start the car, it fires right up?
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