Question about 2004 Mitsubishi Lancer

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How do I fix RPM fluctuation problem

I have been using Mitsubishi Lancer GLX 2004 model since long. Couple of days I am facing RPM fluctuation problem. Sometimes I got RMP 2000 sometimes 800

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Unfortunately, there are many things that can cause fluctuations in RPM's:

any problem with oil pressure sensor shall as per the signals by ECM, will try to shut the engine down, as a precautionary measure. This is because, if the engine oil pressure is not built up, oil circulation to the moving parts will not happen, thereby will result in engine seizure.

RPM fluctuation can also be related to the intermediate feedback/failure of the oil pressure sensor. The root cause could shall be contaminated engine oil, or sensor mal-function, or sensor wiring mal-function.
If this is not the case, then fuel quality could be bad.
So.... what to do? I would drive my car down to my local Auto Parts store and ask them to do a free code reading on it. I have one of those cheap code checkers but theirs is better as it suggests what the possible problem may be.

Start simple: is oil clean and at proper level? Is it time to change your fuel filter?

Good luck!

Posted on Apr 02, 2015

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Check you charging system, you must have bad or loose alternator wire

Posted on Apr 02, 2015

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Posted on Jan 02, 2017

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