I am wondering if the solenoid is bad and that is why it will idle now. The other concern is the idle switch. Is this a lower voltage switch? I was only getting a couple volts out of the connector when testing. If it is supposed to be a 12V circuit, that would explain why the solenoid would not activate. Any thoughts?

 

 

Hmm,it's been awhile since i messed with one but i recall having a poor connection on a couple years ago. It comes from the ECU ( left kick panel as i recall...maybe right lol). Chase the wires and pull the connectors apart. You probably just have a bad connection in the harness. Really the only problem you will have if you remove the plunger is dieseling when you shut the engine off.

 

I remember now. The harness coming from the carb takes a serious bend. The one i had broke a wire in that bend. Not actually at the carb but the large harness after the carb.

 

ok since we are on the problem i'am having. i have a 1990 mazda 2600 4x4 and it revs out at about 12 0r 13 rpm's when i first start it, then when it warms up it drops to about 1100 rpm's, but since this is fuel injected what do i need to check it for proper idle thanks

 

1200-1300 rpm cold would be normal cold fast idle.