Posted by TGP (IL) [108.162.216.47] on Friday, February 12, 2016 at 18:42:05 :
In Reply to: 1988 W250 High idle at start up posted by Steven [162.158.255.90] on Friday, February 12, 2016 at 17:59:49 :
Start in the cold start circuit.
Thinking maybe a temp sensor either coolant or mas air flow tricking ECM to a cold condition when actually warmed.
It's the early OBD1 system. Simple, but need
To follow the troubleshoot tree.
Haynes should have it.
Tom
Follow Ups: