throttle body and MAF upgrade (idleing high)
06-30-2010, 11:18 PM
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throttle body and MAF upgrade (idleing high) so i changed out the throttle body and MAF oust of my 02 formula (ls1) and now my engine idle's at 1000 rpm does any one know what could be wrong i used an 85mm trick flow throttle body and 85mm SLP MAF (with screen). Ive adjusted idle cable on throttle bracket and idle screw on throttle body, but it still idle's high
07-01-2010, 02:19 AM
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- Vacuum leak
- Poorly adjusted idle set screw
- TB blade not sealing properly
- Hole in TB blade (is there a hole on the Trick Flow unit?) too large
- IAC valve issue (not sealing/poor response to PCM input)
Those would be my most likely guesses.
- Poorly adjusted idle set screw
- TB blade not sealing properly
- Hole in TB blade (is there a hole on the Trick Flow unit?) too large
- IAC valve issue (not sealing/poor response to PCM input)
Those would be my most likely guesses.
07-01-2010, 12:16 PM
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yeah im going to check out the seals today after work i know its not a vaccum line cuz that line is on there good so my guess is the seal im going to drop on the spacer that came withe the throttlebody and see if that works also...thanks for the help
07-01-2010, 09:58 PM
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it doesnt have to be a vacuum line to be a vacuum leak. A vacuum leak is any unmetered air that enters the engine. The leak will cause the motor to lean out a little bit and idle faster.
