1994 Buick LeSabre Q&A
1994 Buick LeSabre Question: idle control valve
The idle air control motor (IAC) is located at the top/front of the throttle housing and has a black electrical connector with four wires attached to it. The nose of the "new" IAC valve must not exceed 28mm or upon installation the "new" IAC can be damaged according to the installation instructions in the workshop manual. Replacing the valve takes just under .5 hours. Simply remove the screws securing it to the throttle housing and replace. Look at www.autozone.com they have workshop manuals on line for free for many popular vehicles or check a company that independent auto repair shops "buy" their information from that offer a very reasonable service to do it yourselvers. You get a one year subscription to year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... great quality information same as the professionals have ,much better than generic workshop manuals from parts stores, much cheaper than the factory manual. http://www.alldatadiy.com/ - patrick mannion
I have V6, 3800 that will not idle under 1800 to 2000 rpms. changed idle control valve,checked for any vacum leaks, including intake manfold, nothing. Removed and reconnected power.
It started yesterday I was sitting in idle and it died since then havnt got it to run more than 5 mins and can't even do that without constantly giving it gas I've check fuel filter fuel pump and r...
it stays at a high idle until I kill it and restart it. Then it's back to normal until the fans kick back on.
What causes it to idle to high(egr Valve)