Question about BMW 318

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High idle runs roughwhen cold, gears clonky, low power, very good car 100,000miles full service history, was running mint?

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Have you Changed the mass air filter or MAF or had the mass air sensor checked The MAS these will cause your symptoms if they are clogged and are preventing proper air flow to the engine

Posted on Sep 10, 2009

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Clean the Air Mass Sensor and check for vacuum leak.

Posted on Sep 08, 2009

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1998 cat 3126 when warm surges at idle. not under load and not when cold?


surging at idle indicates air in the pump affecting the governor operation
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Coaster idling high and high fuel consumption


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check the MAP sensor (manifold absolute pressure). The ECM (car computer) uses that to keep idle at minimum 750 RPM. It's normal for it to run high when cold. These small 4 banger motors typically run hot, and they won't run right IF they're NOT running hot, ergo the idle is usually high when it is cold so as to cause it to warm up quicker. If the RPM's drop below 750, suspect the MAP sensor, &/or ECM.

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I got a Jeep Wrnagler 1989 5 speed 2.5 liters when it starts it idles high and idles real low


Seems like you got a fuel pressure issue.Bogs down in 3rd. .Then idle high and low.Also check the MAP sensor its up along the firewall.Make sure the hose and electrical is connected,

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Exceedingly high idle at engine start up


There might be a vacuum leak, check leaks on the inlet manifold and other areas after the MAS.

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Car stering wheel is hard to turn left or right


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