I am looking for a little net.knowledge on what might be wrong with my
88 mercedes 190e 2.3.It is hard to start when cold. Pump the pedal to force an enrichment cycle while turning the key and it will start but the idle is real low and gets back to normal after a minute of idling. I have gone thru what parts of the testing covered in the factory manual and the only thing I can say is that the decel function does not seem to work as advertised.
I tried replacing the fuel pump relay to no avail - still the same problem. The idle air motor/valve was replaced about two years back. I pulled that and cleaned it out just in case it was dirty/jambed.
The frustrating part is once the motor has run for a minute it will start again and runs. There just does not seem to be any idle speed control.
Any suggestions out there?