01 I30 pinging and mis firing

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wkobe88822
Posts: 5
Joined: Thu Mar 25, 2010 10:08 am

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Hi im looking at a an 01 I30 that is pinging and mis firing wont go over 2000 rpm and falls on it face idles nice but thats all thats good about this car. the fuel trim is off by about 5% bank 1 to bank 2.all i did so far is a TPS. any help would be great
thanks wayne

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wkobe88822
Posts: 5
Joined: Thu Mar 25, 2010 10:08 am

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ok a litle more digging in i have maf air flow with in spec at idle but its about 4 gm/second hi at 2500 rpm and as the car warms up it gets worse after warm cant get it to go over about 2000 rpms
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wkobe88822
Posts: 5
Joined: Thu Mar 25, 2010 10:08 am

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also engine rpm hunts when you bring rpm up to 1500
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NutriaforBreakfast
Posts: 1316
Joined: Wed Sep 26, 2007 1:41 pm
Car: Nissan Maxima 1995 VQDE engine

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use some MAF cleaner on the MAF
If cleaning doesn't make it run right then unplug the MAF
if it runs better I would bet it is the MAF
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