Trans am 02 hard miss at speed ! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-13-2015, 12:28 PM   #1
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Default Trans am 02 hard miss at speed !

Hello
I have trans am LS1

Fuel pump racing changed

Ngk tr55 plugs + msd wires
Ls2 intake + headrs long
Tune

The car shut off ( hard miss ) at 3000 rpm on 1 shift !!!

There is only map sensor fault in stored

Any suggestion ?
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Old 01-13-2015, 05:05 PM   #2
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Not sure what you mean.....auto or manual?

Car shut off? Stalled? Or misfired?

At what speed/gear?
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Old 01-14-2015, 12:49 AM   #3
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The trans is manual ,,

Car when push accelerator in (1) shift at 3000 rpm at speed the car begin misfired so hard ( like somebody pull the car reversed) .

I checked the fuel pressure is fine also checked sparks and wires
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Old 01-14-2015, 07:46 AM   #4
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see how it runs if you unplug the maf and start it that way
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Old 01-14-2015, 08:45 AM   #5
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Thanx .. I will try
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Old 01-14-2015, 03:23 PM   #6
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Same problem ,,

People said that try to change cranshaft sensor and crank sensor ,, i just buying camshaft sensor
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Old 01-15-2015, 08:19 AM   #7
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cam sensor you would get a code, crank sensor it would be different, they make it quit. you are going to check the live data on a scanner for things that are out of spec
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Old 01-16-2015, 02:07 AM   #8
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Problem solved !!

A problem was in the MAF !!!

I put used mad from camaro and car running like a champ !!

Thanx everybody
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