Question about 2006 Chevrolet Malibu

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I have changed the fuel pump tps sensor and it still wont let me go over 1500 rpm

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Ck fuel pressure at fuel rail's,with pressure gauge,, when running does it sound like a plugged vacuum cleaner,,e

Posted on Feb 03, 2010


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check TPS (throttle position sensor) when cold the vehicle coolant temp sensor signals to the engine control computer to push more fuel which could be causing you the extra power felt,a bad may sensor could also be an issue as well,internal distributor parts as well could be a failing fuel pump, one that "warms" up a bit and wont push as much fuel, i have actually encountered that issue a few times in my own vehicles as well as that of others

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Rpm going up and down

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Problem with fuel injection


These cars, if I'm not mistaken, are fitted with Vauxhall engines, and therefor from the symptoms you describe, I would have the camshaft sensor checked out, they have a habit of failing.

Very best regards


Jul 09, 2008 | 1999 Daewoo Lanos

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