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  #1  
Old 03-29-2007, 11:50 AM
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Join Date: Mar 2007
Location: Pacific NW
Posts: 3
CIS-E Idling Problem

I have an '87 190E 16V with a hunting idle issue. 235K on it. Well maintained, I've owned it since '96. Parts replaced so far, O2 Sensor, Idle Speed Air Valve, EHA, Pumps, Shut Off Micro Switch, Pump Relay, CIS-E Control Unit. I found the fuel pressure problem myself, and replaced the pumps. I've had 3 shops all stumped replace the other parts telling me they we're probably the issue. I have also cleaned the plunger in the fuel distributor. If I "drive down" thru the gears I can get my warm idle to about 1,000. Driving normally it will sometimes idle aroung 1,000, and sometime slowly climb to 1,800-2,200. Sometimes it will hunt anywhere from 600 to 2,500. It's driving me crazy, any ideas?

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  #2  
Old 04-17-2007, 01:24 AM
Texholdem
 
Join Date: Mar 2007
Location: Dallas
Posts: 756
Hi repapyob,

how do you clean the plunger of the fuel distributor? Do you need to detach it, get it free from the injectors?

Thanks!
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1996 E320 since 1/16/08, 171K miles as of Feb 2011

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1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE
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  #3  
Old 04-17-2007, 02:54 AM
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Join Date: Oct 2004
Posts: 482
Might be worth a try to test the coolant temp sensor with a multimeter. Don't have the exact values you need, a search should bring em up.

Always found it odd how shops rarely get the multimeter out to test components. They just want to slap on a new part and cross their fingers.

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