86 560sl

High idle. Put 12v directly to the valve for a couple of secs and got a nice click from the valve. I then tested the normal voltage with the engine running. Got 4.0v.

If the valve clicked with 12v, is it good?
Is 4.0 a proper reading while running? Meaning the electronics are good? or?

Idles about 12k in Neutral, about 10 in Drive.

thanks.

JB

I can't help with the voltage question, but idling at 12k does sound a bit high

1200 not 12,000. Anybody?

JB

4V is a good reading. The spec at idle is 5V +/- 1V, but at 1200 rpm, it should be higher because the relay should be trying to increase the voltage to bring the idle down.

4V should control the idle. I would look for air or vacuum leaks.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe

that I can find. Did the ol' spray WD40 around the motor and nothing changed the idle. Only thing that works is slightly pressing on the air intake.

I may try to adjust it but my gut tells me that it isn't the problem.

Thanks.

Jb

What do you mean "pressing on the air intake"? Do you mean the airflow sensor plate?

There is a bunch of other stuff to check. Send me an email and I'll send you the chapter off the CD.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe

Depressing it slightly brings the idle down. I have a copy of the CD but I may be looking in the wrong place. If you have a specific chapter or section I'd appreciate seeing it.

Thanks.

Jboggs