Hi My 1986 560 is running rough and slightly high idle, bit of hesitation on acceleration. 157K mileage.

Just did the plugs, wiring, distributor cap and rotor. I have read many posts today about IDLE Mine is about 900RPM.

The valve motor itself passes the voltage 4.65 and ohm 4ohm test.

Cleaning seems to be a possibility. Replacement also. Would like to try and clean it. How is that done?
Thanks Jack

I just fill it up with throttle body cleaner and shake it around a bit. I guess you could apply voltage to move the internal parts around a bit while the cleaner was in there, but I've never done it.
Had an erratic idle a few times, and the TB spray always worked.

DG

I guess any volatile liquid would work. I used carburator cleaner. I unplugged and removed the icv, sprayed into the open output end, shook, sprayed some more until it vented clean. Let it drain then reinstalled and it was fixed.

I don't think I would take the chance of applying voltage to it while it was full of fluid.

Rocky, you're right. I knew there was a reason I never tried that, but Old Timer's Disease made me forget why.

Aging CarGuy rules:

1. Use 4 jackstands
2. Don't start a fire

Cheers,
DG