Reaper Z28

I've got my buddies camaro in my garage after the shop he had it at couldn't figure it out after having the car for over a month. They threw a bunch of parts at it. As it sits now it barely stays running and struggles to accelerate and bogs down and stalls. When you unplug the alternator it runs great (until the battery dies). So far I've tested all three wires using a test light and all of the wires/ visible links are good.also checked the fan fuse and its good. Has anyone had this problem/ know someone who has.

Tuned Performance

iTrader: (92)

Unplugging the alternator changes the injector pulse width making the engine run rich.
Besides testing ste electrical charging system/ connection. Ohm the injectors when the engine is warm IIRC 2.0-2.2 ohms, and you can even see the injector spray pattern with a timing light pointed at the injectors.

Reaper Z28

I can do that. But the injectors injector wires and ecm have been replaced.

cphgncowboy

bad alternator?

Reaper Z28

Tried 2 new alternators.

Jonesyfxr

iTrader: (2)

Bad or missing block ground?

James Tory

I have this exact same issue. Have you found the problem ?

Reaper Z28

Still no luck I rewired the alternator and timed the motor. Now it runs but with a surging idle andwhen it's cold it bogs down if you give it more than a quarter throttle. Runs much better when the motor is warmed up but still hesitates. Still runs good with the alternator unplugged

Reaper Z28

Put a new block ground on it

Reaper Z28

I ohmed the injectors they measured 1.3 ohms. And key on engine off they measured 12.29V battery voltage 12.45V.

Tuned Performance

iTrader: (92)

The injectors ohm seems to be real low, you might want to contact member southbay08 to Confermation the injector ohms on tbi injector though.

Reaper Z28

The spec from another forum on here said from 1.16 to 1.36 ohms

cartech

Any news or updates on this issue?