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Good Evening All,
Thanks again for all your help, I finally tracked down the culprit…and will admit my buffoonery. Tom, when you asked if the car had cruise control…after just getting in from work I decided to start on the driver’s side of the engine to look for vacuum leaks. Happened to look down at the cruise control vacuum solenoid and noticed the cruise control cable had been pulled out about a 1/4 inch…must have happened when I was taking off the motor mount. It was opening the throttle plate just enough to case the high idle. After I reinserted the cable, it purrs like a kitten. Started up at 1500, then quickly dropped down to 900 like it should. I’ve worked on cars for over 30 years and I’ve NEVER had this happen…thanks again for all your help. It’s very much appreciated!Good Evening All,
Thanks again for all your help, I finally tracked down the culprit…and will admit my buffoonery. Tom, when you asked if the car had cruise control…after just getting in from work I decided to start on the driver’s side of the engine to look for vacuum leaks. Happened to look down at the cruise control vacuum solenoid and noticed the cruise control cable had been pulled out about a 1/4 inch…must have happened when I was taking off the motor mount. It was opening the throttle plate just enough to case the high idle. After I reinserted the cable, it purrs like a kitten. Started up at 1500, then quickly dropped down to 900 like it should. I’ve worked on cars for over 30 years and I’ve NEVER had this happen…thanks again for all your help. It’s very much appreciated!Thanks guys, I cleaned the IACV as described so it moves freely. My question regarding this IACV, should it move freely or is there a gear mechanism that rotates the valve in increments? Didn’t know, but I could move it with a small screwdriver back and forth across its travel with no issues after I cleaned it. After reinstalling it, I fired it back up and it did the same thing. I also unplugged it after this and restarted it to see if it would make a difference. It did not, so I’m wondering if I have a vacuum leak or plugged port somewhere. When I originally cleaned the throttle body (I left it mounted to the intake) I sprayed the TB cleaner into the TB. Are there any ports at the bottom of the intake that could get clogged from the cleaner? I’ll check the video out when I get home this evening. Thanks again for the help!
Thanks guys, I cleaned the IACV as described so it moves freely. My question regarding this IACV, should it move freely or is there a gear mechanism that rotates the valve in increments? Didn’t know, but I could move it with a small screwdriver back and forth across its travel with no issues after I cleaned it. After reinstalling it, I fired it back up and it did the same thing. I also unplugged it after this and restarted it to see if it would make a difference. It did not, so I’m wondering if I have a vacuum leak or plugged port somewhere. When I originally cleaned the throttle body (I left it mounted to the intake) I sprayed the TB cleaner into the TB. Are there any ports at the bottom of the intake that could get clogged from the cleaner? I’ll check the video out when I get home this evening. Thanks again for the help!
Thanks Ace, I checked out the link and didn’t see anything that talks about an extremely high idle at startup. Its throwing no codes, which is what’s confusing as well. I’m thinking its the IACV since it controls the idle. If it’s malfunctioning and allowing too much air at startup, the PCM will command more fuel to keep up which would result in a very high idle. But I’ve never seen this problem before so I’m hoping someone has experienced this and can pass on some info to solve it.
Thanks Ace, I checked out the link and didn’t see anything that talks about an extremely high idle at startup. Its throwing no codes, which is what’s confusing as well. I’m thinking its the IACV since it controls the idle. If it’s malfunctioning and allowing too much air at startup, the PCM will command more fuel to keep up which would result in a very high idle. But I’ve never seen this problem before so I’m hoping someone has experienced this and can pass on some info to solve it.