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High idle benz 190e

The idling of my 1987 MB 190e m102 2.3 engine is very low when not warmed up..only about 500 rpm....and becomes very high when warmed up. When the aircon compressor turns on....the idle goes even higher, goes down to 1000 rpm when aircon compressor shuts off. Thanks.

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  • 63 Answers

Could be a defect in the ECU. But 1000rpm is not that high my cars normal is 1000rpm. but some older models were about 700rpm
The AC rise is normal. You may want to have a OBD II check by your garage or you can buy a unit to do this. It will scan the sensors fitted for any problems.

Posted on Jan 28, 2014

  • Jason Johnson Mar 03, 2014

    I would check binding or adjustment in the throttle cable first. OVP relay replacement next. Then you must have duty cycle adjusted. There are online how to on all this online.

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Anonymous

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Posted on Jan 02, 2017

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Sian Parry

  • 34 Answers

SOURCE: mitsubishi pajero io 1.8 GDI idle unstable

sounds like the cabbruter is losing pressure cheak tubes may be lose or damaged

Posted on Feb 24, 2009

Anonymous

  • 1 Answer

SOURCE: idle out of control.

check all your vacuum hoses and the throttle body itself for a vacuum leaks if the hoses replace as nessasary if to check for throttle body get can of carb cleaner and spray around base of throttle body and sides not in it if idle raises you have a vacuum leak goto a good parts store and ask for a rebuild kit don't goto auto zone or advance they don't carry them

Posted on Oct 18, 2009

Anonymous

  • 142 Answers

SOURCE: idling to high and engine revs from 1000 to 2000 rpm

lower the idle switch,might have to have mechanic do it if u dont know where it is,wont cost alot,very easy

Posted on Oct 18, 2009

maaaartin

  • 561 Answers

SOURCE: 4runner idle high when cold after warm up it idle

it seems that the auto choke setting is maybe wrong or there is a problem with engine management, or a worn part which is sticking.

when cold, the engine should be higher as the choke will be on but a warm up idle of 1200 seem a bit high i would expect around 800 and then on restart if the engine is warm then the choke should be off but the idle being too low indicates one of the above.

Posted on Nov 17, 2009

emissionwiz

Marvin

  • 85223 Answers

SOURCE: My 1991 MB 190E 2.3 idles too high around 1200

Intake manifold or vacuum hose vacuum leaks or a sticking idle speed control valve will cause this.

Posted on May 13, 2011

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My rpm drops to 500 when in idle mode after its warmed up and then oil light comes on


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Nov 22, 2012 | Cars & Trucks

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Driving on the road the RPM goes higher wituout speedind


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1 Answer

Bad idle


chk/test yr plugs also. If it starts to break down then chk soliniod & coil as u may be getting the start of a bigger problem. yr symptoms r showing signs of an elecrical problem. rough warm ups r the signs. c/be choke sensor also causing roughness..

Sep 04, 2012 | Cars & Trucks

1 Answer

Idles fast problem


That would be your engine "choke" functioning. It's not a problem. The choke engages when engine is cold and shoots extra fuel to the cylinders to idle the engine up especially in cold with. Once the engine has sufficiently warmed up, the engine will idle back down.

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1 Answer

My 1991 MB 190E 2.3 idles too high around 1200 RPM and wont go down even when warm; what can be wrong?


Intake manifold or vacuum hose vacuum leaks or a sticking idle speed control valve will cause this.

May 13, 2011 | 1991 Mercedes-Benz 190

1 Answer

How do i set my distributor advance for 2.5liter, 1987 acura? I can't seem to find a good balance, i get either no low end power or no high end power


15 degrees BTDC according to autozone.com

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    4runner idle high when cold after warm up it idle 1200 rpm shot down engine after fuw min. restarting the engine the idle to low?


    it seems that the auto choke setting is maybe wrong or there is a problem with engine management, or a worn part which is sticking.

    when cold, the engine should be higher as the choke will be on but a warm up idle of 1200 seem a bit high i would expect around 800 and then on restart if the engine is warm then the choke should be off but the idle being too low indicates one of the above.

    Nov 17, 2009 | 1995 Toyota 4Runner

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