Guitar is here!!
Have a question: When your engine reaches the normal temperature, does it stay at 750 rpm or it drops even more??
actually, as it heats up the idle becomes stronger, more steady and rises...
Also, last month when I was trying to clean the valve air solenoid(i think that the name), the one that attaches to the back of the inlet manifold, I took it out and next to the thermostat theres an opening with a plastic valve, I poked it with a screw driver and it CRACKED!!!!
I was like S***!!!!!
I decided to put it back and then start up the car, and idle went up like crazy!!! I had to re-adjust the screw on the throttle body to bring the idle down to 750rpm when it heated up to normal operating temperatures. I had to turn the bolt all the way closed and then open it between 180-360 degrees from fully close to get 750rpm.
This stuffed things up bad
Everytime from then, when I start up my car when it is cold, the rpm won't hold and shut down immediately...
no matter how many times i try it just won't hold... so I had to hold the throttle down slightly then start up the car and hold it revs manually with the throttle up around 1500rpm. After 30 secs I release the throttle and only then the revs finally hold, but very low, like 500-750rpm, after the engine heats up a bit, it goes up to 750rpm and stays there...
It sucks really bad...
So after I've replace the broken solenoid, MAP sensor, idle control solenoid,
it still made no difference and now it's got that stupid problem where I have to manually hold the throttle down slightly to hold the revs up until 30secs later, then release.
Arghh!!!! somebody help...