Idle Speed?

'94IDITurbo7.3 · Jul 24, 2011

For the truck in my sig what is spec for the idle speed once the cold idle turns off. mine idles around ~750-800 on factory tach. just currious b/c i saw a pic of the dashboard in a '97 PSD and it was idleing around 600. i know these are two completey different engines but just wondering what you guys idle at.

Thanks

Ididriver · Jul 24, 2011

mines a moody girl
90 percent of the time mines between 750 and 800 and some times its 600-650

OLDBULL8 · Jul 24, 2011

Warm idle is ~650, cold idle ~950.

grog85 · Jul 24, 2011

Warm=700, cold=850

CDX825 · Jul 25, 2011

Idle should be 650 +-50

franklin2 · Jul 25, 2011

If you have the solid flywheel conversion or have bolted your original flywheel together and have the noise from your zf 5 speed, increasing the idle speed a little bit really helps the tranny noise go away.

'94IDITurbo7.3 · Jul 25, 2011

So it sounds like my idle is a touch high then.

how might i go about lowering the idle speed?

oldblue05 · Jul 25, 2011

Mines always 650, pretty sure its the spec. Pretty sure the drivers side flip down visor states cold and warm idle, but I pulled them out long ago...

'94IDITurbo7.3 · Jul 25, 2011

Thanks for all the input guys. I will look at my visor.

smolkin · Jul 25, 2011

'94IDITurbo7.3 said:
So it sounds like my idle is a touch high then.

how might i go about lowering the idle speed?

The adjustment screw is on the pass side on the IP, on the throttle lever that the cable attaches to. It just takes a flat head screwdriver. In/clockwise raises and out/counterclockwise lowers it IIRC.

icanfixall · Jul 25, 2011

At the 2009 rally Mel set my new moose pump at 650 rpm. I prefer 750 rpm so I have set it for that... Factory specs are 650 rpm I believe...

'94IDITurbo7.3 · Jul 25, 2011

smolkin said:
The adjustment screw is on the pass side on the IP, on the throttle lever that the cable attaches to. It just takes a flat head screwdriver. In/clockwise raises and out/counterclockwise lowers it IIRC.

Thanks man.

'94IDITurbo7.3 · Jul 26, 2011

Well this evening i lowered my idle speed but could only get it to about 700rpm b/c the throttle lever bottomed out on te cold idle solenoid. It does sound better though and i like it better.

Once i moved my idle i saw my O/D light flashing. I thought oh crap, but then i realized that my TPS probly needs to be readjusted. sure enough thats what it was. at my previous idle it was set at .99V. once i moved the idle it was .61V. So i re-adjsuted the voltage on my TPS to 1.00V. i test drove it and it was hanging on to each gear a little longer than i would like or need. i did like the firmness of the shifts though. so tomorrow i will try to get my TPS back to .98-.99V and go from there.

troy_caleb · Aug 26, 2011

Should be able to turn the idle solenoid down down with a wrench...

'94IDITurbo7.3 · Aug 26, 2011

Thanks but i got it all figured out. ;Sweet

The E4OD needs a min idle speed of 750rpm to work right anyway.

Idle Speed?

'94IDITurbo7.3

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Ididriver

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