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I have a 2003 jag s type 4.2 that has a mild engine surge typically from 1000 to 1500 rpm that you can feel and also see the the tach bounce around 200 rpm. likely cause?

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6ya6ya
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Posted on Jan 02, 2017

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csmock132
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SOURCE: tach surges in 2003 dodge dakoda

4.7? I've had a few of these trucks do this with bad Throttle Position Sensors.

Posted on Aug 23, 2009

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  • 9 Answers

SOURCE: A/c cuases engine to surge

it could be a fuel filter problem as the egst valve might not be opening .

Posted on Sep 11, 2009

  • 1 Answer

SOURCE: engine surges at about 2000 rpm. Tach increases

got a continuous red warning light on the dash - has an exclamation mark in the middle
i dont have a handbook etc so what could this be? anything serious?
all other indicators r good eg temp oil batt guages etc
please help...

Posted on Oct 18, 2009

  • 56 Answers

SOURCE: engine surge at idle 1992 honda accord

check your tps sensor, or idle stop soleniod. they both control idle. Its not a major problem it wont effect your driving but may cause vehicle to die at a light.

Posted on Dec 01, 2009

  • 1214 Answers

SOURCE: 2002 Chevy Trailblazer surges on the highway

I would be suspect of the throttle position sensor, but have the codes read, WRITE THEM DOWN (if there are any), and report back here. TPS's failures will sometimes throw a code but does not require a CEL when they do.

Posted on Dec 21, 2009

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A/c cuases engine to surge


it could be a fuel filter problem as the egst valve might not be opening .

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