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High Idle speed again- Help please; Idle speed on my 2.0E is high
Topic Started: Sun Apr 30, 2017 7:26 pm (255 Views)
MalcolmK
Newbie
[ * ]
Hi
My 93 190 2.0 E has developed a fault where the warm engine idle speed has changed from approx 800 rpm to approx 1200 in Park and 1500 rpm in N.

Otherwise the car drives as normal, no other faults or warning lamps/indicators. I have reviewed the previous posts on this subject but not found the solution. some of the old posts point to photos where the links no longer work

I have taken off the Air filter housing and sprayed butane at the vacuum hoses I can see but this had no effect on the engine speed.

I would be really grateful if someone could explain a logical sequence of fault finding.

Thanks

Malcolm
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xander14
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Part of things
[ *  * ]
Had this problem with mine read this post derlaudtraut has some recommendations which might help or you could try what I did in the end, it might help, good luck with it
http://mercedes-190.co.uk/topic/8003132/1/#new
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balamb37
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Grumpy Old Grampa with Dog
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MalcolmK
Sun Apr 30, 2017 7:26 pm
Hi
My 93 190 2.0 E has developed a fault where the warm engine idle speed has changed from approx 800 rpm to approx 1200 in Park and 1500 rpm in N.

Otherwise the car drives as normal, no other faults or warning lamps/indicators. I have reviewed the previous posts on this subject but not found the solution. some of the old posts point to photos where the links no longer work

I have taken off the Air filter housing and sprayed butane at the vacuum hoses I can see but this had no effect on the engine speed.

I would be really grateful if someone could explain a logical sequence of fault finding.

Thanks

Malcolm



!200 to 1500 revs on idle that is 99% an air leak caused by a split in one of your vacuum lines, check them all by squeezing and bending, mainly at both ends

near the little pipes that they are pushed onto.
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