Mercedes Benz 190E 2.6 W201 (1986 - 1993) - 1991 2.6 Idle/Engine cutting out

Honest John Back Room » Technical matters
View Threaded
Mon 18 Aug 2008 16:50
1991 2.6 Idle/Engine cutting out - chadlangdon
Hi, occasionally the revs will drop and the engine dies. This usually happens on slowing down for a roundabout/junction or low speed manouvering.Idle is 600/700 revs most of the time but sometimes hunts between 400 - 1500. I have had the throttle body cleaned and new plugs and plug leads fitted. Any pointers would be apprecated.
Reply | Report as offensive | Link
Mon 18 Aug 2008 16:56
1991 2.6 Idle/Engine cutting out - Screwloose

Check for any sort of air leak into the intake tract and that the idle switch and the rotary idle valve are working.
Reply | Report as offensive | Link
Tue 19 Aug 2008 13:05
1991 2.6 Idle/Engine cutting out - chadlangdon
Hi. thanks for the quick reply. I spoke to my mechanic and he says the above has been checked, all ok. He recommends increasing idle revs by 50 - 100 as next move.
Reply | Report as offensive | Link
Tue 19 Aug 2008 16:22
1991 2.6 Idle/Engine cutting out - Number_Cruncher
>>He recommends increasing idle revs by 50 - 100 as next move.

That is the symptoms being disguised rather than the fault being cleared. Bad move IMO.

Is the KE jetronic ECU receiving electrical power?
Is the primary fuel pressure within tolerance?
Is the coolant temperature sensor resistance within tolerance?
Is the EHA working correctly?

Reply | Report as offensive | Link

Looking for a garage you can trust? Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing.

The Good Garage Guide

From which small car to buy at which price point to the best UK-built cars, our Top 10s have the lot. Click now for your shortlist.

Unsure of what to buy? Our Top 10s are here to help you....