Hey guys, I have a question about a friend's car. He just acquired a 1989 Camaro IROC-Z with, as far as we know a 350 TPI, and T5 trans. Whether it's a 305 or 350, it DOES have the TPI fuel injection system. Sorry to bring Chevy into this forum but I have run out of resources. It has a problem, here are the symptoms:
Car is slightly hard to start (does not start up as fast as i'd like from a fuel injected car)
After the car runs for a few miles, it will not go over 2000 rpm at full throttle, the more throttle you apply, the harder it bogs and earlier it stops going.
It does not die, just completely runs out of fuel and will not go any faster, then when you release the gas it goes back down to idle.
If you turn the key off and immediately back on, it works properly again for a minute or a few minutes.
Even when it is working "properly", the engine runs out of power at 3000 rpm. It doesn't miss or shake or bogg, just literally stops pulling at about 3000 rpm which seems very odd.
Fuel pump is audible, and not in the normal GM buzzing/whining way. It sounds different from that and is louder.
We've replaced and checked a lot of things on the car, next step is replacing the fuel pump. However, if the fuel pump were bad it seems to me that the car would stall or just not start, yet it continues to start, idle, and run fine except for the afformentioned problems. There is no check engine light and when hooked to a scan tool there were no trouble codes. Any ideas?
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