The Stovebolt Site Forums The Shop Area Engine Shop good mechanic near charlotte.nc?

im tired of my 89 305 tbi camaro running like crap.is there a mechanic that could diagnose it at a reasonable price?im a good parts replacer.ive replaced so many things on this car with little improvement.

if you don,t put it on a machine you are shooting in the dark,,,what is running like crap mean and what have you replaced...doc

it pulls like it has about 75 hp.minor backfires starting and sometimes running,bad vibration around one thousand rpm.i replaced fuel filter,egr valve,computer,distributer module,sparkplugs,sparkplug wires,oxigen senser and gutted the cat.ran several bottles of gas additives,took tb off,cleaned passages and squirted out with cleaner,watched the injecters to watch for cone pattern.

no info about the fuel pump preasure and flow from what you tell that is where I,d take a look also the map senser might be bad....doc

i don't have a guage to check fi fuel pressure,i guess i will buy one.the car has 140000 miles on it .the pump may be weak.also the map senser.

I have seen more trouble w/fuel pumps than anything else on these cars-it won't set a code, only a scanner will tell you if fuel trim is off. With that many miles I would toss a pump in it-I had a early 90s TBI Cavalier brought to me once, it had been all around & no one could figger it out. Fuel pressure spec'd @14psi, car had 13psi. I guess most guys thought that was OK, but the car wouldn't go over 45mph. Ran perfect otherwise. New pump & it was good to go. Brian

only thing is the pumps in the tank and i will have to remove the exhaust to get to it.i checked at pep boys today to get a guage but all they sell now is gadgets and chinese motorcycle type stuff.