hot-trans am

hey a have a 96 trans am a4 wit header and bbk tb my car runs good till 4000 rpm then it bog out and miss could it be the opti car has 121000 miles on it

onephatZ28

iTrader: (8)

I would say yes. if you get a new one just get one from GM.

Fazz73jr

iTrader: (3)

Check your fuel pressure. could be your pump diying or cloged fuel filter.

hot-trans am

how would i check my fuel pump to see if it bad, also the guy i got it from had a msd box hook up to it. but wen i got it i unhook it. people told me they mess up the opti is that true

mguidry629

iTrader: (6)

To check fuel pump and most other fuel problems: $40 mechanical fuel pressure guage from an auto parts store and screw to the schrader valve to monitor fuel pressure.

If pressure is good, then you can eliminate fuel delivery problems.

hot-trans am

ok thank i will be doing that wat psi is good for my car

SoxXpupPeT

iTrader: (34)

check everything before you go ahead and dump aload of cash into it.

hot-trans am

well the car has new msd 8.5 wires and it runs ok till 4000 rpm then bog and miss it had a msd box hook up went i got the car but i unhook it thinkin it was the problem wat else can i check

onephatZ28

iTrader: (8)

check the ignition coil and Ignition Control Module

How to
http://shbox.com/coil/coil.html

onephatZ28

iTrader: (8)

replace your fuel filter
how to
http://shbox.com/1/fuel_filter.html

check fuel Pressure
how to
http://shbox.com/1/4th_gen_tech2.html#fuel_gauge

IF ALL IS GOOD THEN I WOULD SAY NEED NEW OPTI
hope this help you man good luck

hot-trans am

everything else is good so i going to get a opti thank should i hook back up the msd box or not like poeple say it make the opti bad

davorocks

everytime i go to the j/y i pull control modules from LT1's. before i spaced it off the head i would burn one up every few hundred miles, having symptoms VERY similar to yours. ever since i spaced it i have had no problems (knock on wood.)

1961ba427

iTrader: (26)

Will a bad opti always throw a code?

hot-trans am

like idk i bought the car the way it is and it has 121000mile but they put a msd box on it and then the car runs ok till u give it 1/2 gas then it bog at 4000rpm i dont know how to check the ICM but i keep that in mind

hot-trans am

davorocks

mine drove great untill i gave it more throttle. i didnt pay attention to the rpms, just that it did not run good under a good load. its worth a shot if you can get one cheap. they are not cheap new.

1961ba427

iTrader: (26)

Wasn't hi-jacking....I was thinking a reply to my question may be of some benefit to the OP. Seems like a reasonable point to a post titled: IS MY OPTI BAD?

hot-trans am

thank im think ima see if i can get one from the j/y and try it

onephatZ28

iTrader: (8)

IF YOU GET A NEW OPTI GET A GM BRAND, DON'T GET ONE FROM EGAY. i got a Accel from summit and it fried at 100 mile. once again good luck

tricked94camaro

iTrader: (1)

chandler motorsports