Mechanics

MERCURY SABLE RPM PROBLEM

1997 Mercury Sable • 150,000 miles

Car Idles good in park And neutral. If you put it in drive the rpms start to climb. You put it back in neutral or park and it goes back to about 850 rpms. Base Idle is between 350 and 400. Checked the resistance of the IAC it was 10.1. Your advice thanks
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ICFORD
February 2, 2013.




What is the voltage when in drive?

Roy
AD

I had a spare IAC put it on and it did the same thing. Also with the TPS. I don't have the car at the moment.

Tiny
ICFORD
Feb 2, 2013.
Check this voltage and let me know

Roy

Ok I check the voltage and it was very all over. 34 to 84 to 124

Tiny
ICFORD
Feb 2, 2013.
You only have a possibility of 0 to 12 volts. Are you on the right scale?

Roy


AD