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Old 31st October 2010, 23:27   #1
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Default Reluctance in increase in RPM

Hello bhpians,

This is about a problem that I see in my friends car. The car in question is a 2004 esteem. The tachometer works properly (I presume) since the idling without the ac on shows 800-900 rpm and with the ac on shows 1100 rpm. On pressing the accelerator during stationary, the rpm does not go over 3000 rpm. Even whilst driving there is a reluctance in going over 3000-3500 rpm. The car's meter mentions the redlining at 6000 rpm.
On a Getz ive observed whilst stationary the car can be revved to 5000 rpm.

What could be the problem ?

The car has got an oil change done just 1000kms back ?
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Old 2nd November 2010, 17:13   #2
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Kavesh,

- How many kms has the car run? Is she throwing out a check engine light? This sounds similar to what I faced once when my car went into "limp home" mode (i.e. safe mode).

- Sounds like a problem with air flow. Check that your air intake / air filter isn't choking. If that's okay, check the fuel filter if its clogged up. Next, check the MAF / O2 sensors and fuel pump (for inadequate pressure)

Quote:
The car has got an oil change done just 1000kms back ?
I sure hope he filled the right oil!
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Old 2nd November 2010, 18:06   #3
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The car has run 36k kms in all. 34-35k when it had gone for a tune up, which included a change of oils and filters.
will check the air filter.
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Old 4th November 2010, 03:26   #4
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A choked Catalytic converter could also be the reason for making the RPM reduce. Since the car has got a new set of filters i presume that it shouldn't be a problem of a choked air cleaner or a Fuel filter. The Rev limit on this car is 6700 RPM so it is definitely under performing. Keep us updated on the status of the car.
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Old 6th November 2010, 15:22   #5
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Check if your induction coil is OK. Inspect/Clean and replace spark plugs, cord wires if necessary.

Still if the problem persists, I would suspect fuel adulteration, and cleaning of fuel filter/tank/lines is recommended.
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Old 20th November 2010, 21:20   #6
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The engine was scanned, all the sensors are working. There may be two issues-
1. The plug wires my not have the necessary resistance
2. The optical sensor in the distributor needs to be checked.
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