car is missing when i give it gas
05-13-2010, 08:21 PM
#1
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car is missing when i give it gas had a cooling problem got it fixed then when i am in park and ease in the gas revs fine but if i just try to do a quick rev it sounds like it is misseing and when driveing as long as i ease into the gas its ok but misses alittle but if i floor it it missed something bad the car is a 94 z28 all stock could it be the plugs and wires or the opti and if it is the opti what are soem of the signs of one going bad
05-13-2010, 08:32 PM
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How long since the plugs and wires have been changed? Not sure where you live but since it is either already dark or will be soon, go out pop the hood on your car and start it up. Look for the wires arching, if you see this you need to replace the wires.
Did this just start all of the sudden or did it gradually get worse over time?
Did this just start all of the sudden or did it gradually get worse over time?
05-13-2010, 09:36 PM
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had a cooling problem got it fixed then when i am in park and ease in the gas revs fine but if i just try to do a quick rev it sounds like it is misseing and when driveing as long as i ease into the gas its ok but misses alittle but if i floor it it missed something bad the car is a 94 z28 all stock could it be the plugs and wires or the opti and if it is the opti what are soem of the signs of one going bad
05-14-2010, 12:28 AM
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thanks guys the miss has gotton worse over time and the car did run hot a few times so it could be the icm under the coil if i buy a new coil will it come with it or can i just buy a new one also got plugs and wires going to put on tomm just to be on the safe side of everything but no water on the opti though. and the leak was on a hose that ran from the raditor neck to a metal hose that ran between the intake and the passenger side valve cover had a hole in it and causing a air pocket to get in the system
05-14-2010, 03:57 PM
#7
Don't go off just buying ****, and throwing money away, i just had the same problem. It turned out to be the fuel pump. You need to get a pressure gauge, and check your fuel pressure at WOT. If it has a bad drop in pressure its your fuel pump. Joe has a good rite up on how to change it out without dropping the tank. Took me about a hour or so to change mine out start to finish.
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05-15-2010, 06:27 AM
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well thanks everybody for there input but it was a fuel issues had about 40 psi at wot changed the fuel filter and got it back to 45 psi and cleaned the mass air flow and it has never run better
