1992 Chevy Camaro Fuel delivery?

Tiny
CRASHER0083
  • MEMBER
  • 1992 CHEVROLET CAMARO
  • V8
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
My 92 Camaro 5.0 TBI was running fine one day and then it stalled out like it wasnt getting gas. To make it short.I replaced the throttle position sensor, idle air control valve, fuel filter, air cleaner gasket and checked and actually replaced the vacuum hoses. The PCV is fairly new and in good shape. I dont have the equipment to check fuel pressure but I disconnected a fuel line and it had a good amount of pressure in it. It shot out about 3 feet. While looking in the throttle body.I can see that the injectors are spraying. Before I started replacing parts, the car would bounce up and down between 1800 rpm and 100 rpm (almost stalling before shooting back up). When I put it in gear it would stall out quickly. I thought I had it fixed even though it idles high but when I put it in gear now. It does the bouncing rpm thing again and stalls out if I dont hit the gas at the right time. It idles at 1100 rpm when I start the car and when I put it in gear. Like I said it bounces and wants to stall. Also all the plugs and wires appear to be in good shape. Any ideas what this could be? We're pulling our hair out here trying to fix this. Thanks for any help.
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Sunday, February 22nd, 2009 AT 6:20 PM

6 Replies

Tiny
RASMATAZ
  • MEMBER
Lets attempt to check out the fuel pressure with a fuel pressure tester to rule out the fuel pump then clean out the EGR valve then report back
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Sunday, February 22nd, 2009 AT 6:29 PM
Tiny
CRASHER0083
  • MEMBER
Im going to do that 1st thing tomorrow. Thanks for getting back to me so soon. Thanks again for the help.
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Sunday, February 22nd, 2009 AT 6:33 PM
Tiny
CRASHER0083
  • MEMBER
I cleaned out the egr really good and installed a new gasket. Checked the fuel pressure. I got around 7 psi. The car manual says it should be between 9 and 13. Do you think its the fuel pump? Is 7 psi to far out of the normanl range?
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Tuesday, February 24th, 2009 AT 10:41 AM
Tiny
RASMATAZ
  • MEMBER
Its low replace it. On EFI system the pressures has to be within specifications at all time to operate properly
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Tuesday, February 24th, 2009 AT 3:45 PM
Tiny
TEAG
  • MEMBER
Check for leaks inside the fuel tank. The Camaro RS fuel pumps are sub-standard for the engine that they run. If your running 8 psi thats normal but anything lower then 8 points to a very common problem in F-Bodies. On your fuel pump theres a little black hose that connects the pump to the sending unit. Try replacing that before you buy a pump. Those little hoses are cheap and have been know to develope microscopic leaks. With your fuel pressure running what it is. Id almost say I know for a fact thats what it is. Give that a try. If you have the money and love your F-Bods like I do. Id look into a performance pump or find one from an I-ROC or GTA.350s of course. Like ras said. You need that pressue to run that engine. Good Luck! :)
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Friday, February 27th, 2009 AT 9:45 AM
Tiny
CRASHER0083
  • MEMBER
Changed the little hose on the fuel pump and that did the trick. Im still getting about 8 psi for fuel pressure. I think Imm going to take yalls advice and get a new fuel pump when I have the cash. Thanks guys. Yall are awesome.
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Friday, February 27th, 2009 AT 3:25 PM

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