#1
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Please help!
I have a 2000 maxima. It has no check engine light. What it does is between 20 and 50 mph it will surge [rpms jump up and down] but not all the time its just intermittent. And sometimes hard to crank. New plugs, it had a new maf about 4 years ago and it stopped for a while but then started back. I checked the wires to the maf and all within specs. Its a aftermarket maf. Ive read about the pcm needing to be flashed, but if it does why would it drive okay for a year or so and then start messing up again, wouldn't it drivd worse as soon as it was replaced. Could it be tps????
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#2
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check all your vacum hoses for cracks in then around the intake manifold...Ray
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#3
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I would be suspicious of an aftermarket MAF, as problem sounds like what mine was doing when MAF bit the dust. I replaced with a refurbished OEM MAF from autopartsexpress.com (about $160) and a new isolator ring from the dealer (about $10) some 18 months ago and it has been fine ever since.
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1997 Maxima SE, 5 speed, dark green with tan leather, 235K+ miles and still going strong. |
#4
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I am suspicious of the aftermarket MAF. Your problem sounds just like mine was doing about 18 months ago. I put in a refurbished OEM MAF from autopartsexpress.com (about $160) and a new isolator ring from the dealer (about $10) and the problem was solved. Vehicle has been running fine ever since. Good luck.
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#5
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Also clean and check your IAC.
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maf, surges |
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