Idle problem!!!
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My idle at cold start sits at 1k. As soon as I start driving around it wants to hang at 1500 when I am at a stop light and even when I blip the throttle like it is hung up, it still wont come down. Funny thing is when I turn the ac on then off the idle goes back to 1k and no problems until I shut the car off and back on. It almost stays in open loop until I kick the vents on then off and then it will finally go into closed loop. I dont have any type of tuning tools but I replaced my IAC valve and it didnt help. Can someone help shed some light with maybe some past experiences or help. I know I do not have any leaks what-so-ever as I checked that. Sounds and seems like an issue with the circuitry or pcm but I am just shooting in the dark. This is getting annoying as hell and I need some help. Thanks!
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i noticed it when my trip mileage kept getting erased everytime I shut the car off. Dont think it is the battery causing that. Whatever trickle voltage powers the memory bank may have an issue.
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I have checked everything! and I am certain there are no leaks. It's getting to be a pain in the *** and i really dont want to tune until I get my heads on there. I guess I'll have to live with it until the heads are finished when it will be ready for the tune.
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I had a similar thing happen to me with my GTP. I started the car up and it would idle much higher than normal. I kinda figured it was a vacuum leak of some sort, sure enough after digging around a bit I found a hose that had popped near the throttle body.
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do u have any kind of scanner to check ur tps or any other codes? If you don't u may want to check with a local auto parts store and see if they can run a scan for you. Is your serice engine light on?
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I have cleaned everything throttle body, IAC, TPS port, I think I might take off the throttle body and lightly sand the blade. I dont see any scuffs in the throttle body and it is mechanically operating properly. I might just pull the intake for ***** and giggles. Or I can block off the pcv just to see if blocking off the port on the intake under the throttle body makes a difference. If it does I need to investigate pcv line and if not more than likely pcv line isnt the culprit. It seems to do it more when the vehicle is warm after cold start.
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yes but I think maybe the manifold is possibly cracked underneath but I seriously doubt it, the hotter it gets you would think at that point since it's plastic the issue should be less relevant when hot.
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can you get a scanner to observe the short term fuel trims and spray a little b-12 around the intake and the throttle body while watching the scan tool if it goes rick you got a leak somewhere. check it out it might help you.
my two cents
JOSH
my two cents
JOSH
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dude you are probably spot on but I dont have a scanner. I think my computer did some re-learning when i put the new intake on because I have no leaks what-so-ever and everything else is in working order.