"Guv Bob" wrote:
"Guv Bob" wrote in message
m...
I know this sounds stupid........ but I can't find this thing to save my life.

When I turn the ignition 'on' there is clearly a solenoid chattering in
the middle of the engine, between the engine and firewall. Best I can
tell it's coming from about 6-12 inches down from the top of the engine.
Normally I can use a tube to find these things but this time can't locate the sucker.

A problem I have this time is I'm just learning this car and can't find
any diagrams showing solenoids. Haynes and Chiltons aren't much help this time.

I know it's not coming from near the starter solenoid. Anyone know what
other solenoids would be in that area?

1990 Mitsubishi Eclipse.

Thanks in advance.

Bob

==
Found it - the idle speed stepper motor was chattering. Had to drill
out 3 screws to get it apart. Cleaned it off and seems to work but not
sure. The shop manual says to apply 6vdc to some of the connector pins
and see if it if moves or vibrates. I can barely feel it move every time
I hit a pin with 6v, but no vibration or continuous movement. Same when
terminals swithed. Does this right? I'm guessing that one 6v pulse from
the control unit causes one step in the motor - can't find that out
anywhere and the Mitsubishi place here won't say anything except "bring
it in and we'll test everything for $150".

It would also be nice to know how many steps there are in the motor. No
info from anywhere I could find about this.

I checked one on truck by operating off engine still connected. Just see if
it has resistance on all leads, assuming the same ohms. Lubricate.

Greg