Extremly extremly high idle, wth??
This is a discussion on Extremly extremly high idle, wth?? within the General Help forums, part of the LSx Technical Help Section category; Originally Posted by 0rion vacuum leak or an air leak post MAF. First place to check is the pcv hose ...
11-29-2011, 12:26 PM #21
11-29-2011, 12:47 PM #22
- Join Date
- Feb 2009
- Ugy Lower Corner of AL
Navy Blue Metallic
- 98 T/A w/a little mods...
IAC is Idle Air Control - located on the throttle body. As the TB sits on the engine, it is the top sensor on the drivers side of the TB. The lower sensor is the Throttle Position Sensor or TPS.
Another thing to check with the TB is check the blade. If the hole has been enlarged it can cause high idle too.
Orion is more likely to be correct. The pcv is notorious for leaking and if the intake was not installed correctly or the map sensor (located on the back) was knocked off you'll have issues.
Also check behind the intake, make sure the hose that goes to the break booster and the HVAC tubes are seated correctly.
11-29-2011, 01:44 PM #23
- Join Date
- Nov 2011
- Houston, TX
- 1999 LS1 Transam
ok thanks much appreicated ill let you know what i find ouit
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