LT1 problem

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Jan 11, 2012 | 09:53 PM

1996CamaroZ28

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LT1 problem

Have a 96 z28 that stumbles/hesitates/backfires at 3500RPM when I give throttle. Doesn't matter if its WOT or half, when it gets to 3500RPM is just loses all power until I let completely off. Also the car dies every so often just when sitting in park and idling but always starts right back up. Sounds like two things to me, ICM or Opti. Any ideas?

Jan 12, 2012 | 12:53 AM

the_merv

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From: The Beach...

Check Fuel Pressure.

Jan 12, 2012 | 02:21 AM

Zlow28

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do you have a coolant leak?

Jan 12, 2012 | 09:56 PM

stuart4185

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From: baltimore maryland

for the idle, check the IAC valve for crude and buildup. for the falling flat on your face at 3500, fuel pressure, then maybe the coil before assuming opti

May 14, 2012 | 01:00 PM

1996CamaroZ28

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Was a weak fuel pump. Problem got worse and ended up finding out the pump would drop pressure then build back up then lose pressure again. Replaced pump and car runs great.