Idling issues - 2nd Gen

[Nick9thomas]

Hey Guys,

99 EXPLORER XLS
Will barely hold an idle and stall out. Rough acceleration. Just changed the fuel pump cleaned the maf sensor. Changed the fuel filter as well. CEL - too lean on driver side. bank 1 and 2. I have changed the IAC about 3 years ago. Any ideas? Any help would be greatly appreciated.
Thanks,
Nick Thomas
Athens Ga

 

[Runnin'OnEmpty]

At this point
I'd suspect a vacuum leak from the intake plenum
gaskets....very common on these models.

 

[JusTheUsual]

leaking any antifreeze from the heads?

 

[Nick9thomas]

Thanks guys,

There has been a slow antifreeze leak. Ill try a vacuum test as well

 

[rb142]

Yeah, sounds like an air leak.

 

[intelisevil]

My 2000 SOHC was reacting similarly but no CEL. I had to shift to Neutral and keep my foot on the gas at stop lights.

I removed and cleaned my IAC with electrical contact cleaner. No more problems in the two years since.

Good luck,
Dan