idle Problems

[deanb34]

I have just sold my 1991 e250 d and brought a 1991 230ce coupe, which are both from the 124 series. But it does not want to idle when its cold, and when it warms up a bit it will idle but only just. It will sit roundabout 7; some times it will keep flicking between 5, and 11. Other times it will just keep dieing although it has kept running lately. It has the Bosch cis-e (ke-jetronic) fuel injection system with the idle micro switch. Has anyone got any idea what the problem could be?
Thanks Dean.

 

[PETER SEARSON]

I HAD SIMILAR PROBLEM ON MY W124 UNTIL THE ENGINE WIRING LOOM / HARNESS WAS REBUILT WITH HIGH TEMPERATURE SILICONE CABLE....DID NOT TAKE NEW WIRES TO ECU...JUST ABOUT 18 INCHES FROM NEW INJECTOR CONNECTORS WHERE INSULATION HAD COME OFF WITH AGE AND HEAT , FED THEM TO SOME OF THE CABLES WHICH WERE GOOD