My engine idles at 1250, what would cause it to idle so high

 

check for vacuum leaks,i have been having problem with egr tube sucking air at top of intake lately and 1 of the signs it is leaking is the higher than normal idle. Once bad enough you can hear the hissing. At least check it out.GoodLuck. My 2 cents worth.

 

When my car idled at 3K RPMS it turned out to be a dead battery, I was told by GM.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by WMSuperSport:
<strong> When my car idled at 3K RPMS it turned out to be a dead battery, I was told by GM. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Riiiiiight... <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

 

I chased a high idle problem for 4 hours before I found a broken idle air control motor wire hiding deep in the mess.

The IAC would move, but one of the wires was broken, causing the idle to go from where it should be, gradually worsening, up to about 1200.

This was on a 93 LT1, so YMMV.

Good luck, I'd start by looking at the IAC very closely, especially if you have a scan tool handy.

-Andrew

 

I do have a bad battery it go dead if it set up for 3 or 4 days.
thanks twsikes