TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

unkown problem

Old Mar 3, 2010 | 01:13 PM
  #1  
89mongoose's Avatar
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unkown problem

i just bought a 89 rs camaro tbi 305 and the guy said it ran fine until he let someone test drive it and let the fuel tank run dry. it will run when i spray starter fluid in it so i know it will run. so i changed the fuel filter and the fuel was definately getting to the filter, then i took the tbi apart and made sure there was no trash in it. now it will crank by it self but will die immediately but when i unplug the hose in the back inbetween the in and out fuel lines of the tbi it will stay cranked for about 30 seconds unless i hold the throttle a little then it will keep running for a little bit longer but eventually the check engine light will appear and will die. i think one of the problems might be the fuel pump is not pumping enough pressure, and /or i might have a bad senser but i dont know what hoses are witch sensers. i dont know im a little confused someone please help what should i check and how?
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Old Mar 14, 2010 | 12:18 PM
  #2  
Shadyredeyes's Avatar
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Joined: Mar 2009
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From: Texas
Car: 1987 Camaro Iroc Z28
Engine: 350 S/B
Transmission: 700 R4
Axle/Gears: 2.43 Gear Ratio
Re: unkown problem

When you turn the key to the on position can your hear the fuel pump come on? Should sound like a low humming noise for a few seconds. You might need someone outside the car near the tank to hear it. Sounds as though your fuel pump is going out to me.
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Old Mar 14, 2010 | 11:53 PM
  #3  
houseumbrella's Avatar
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Joined: Jan 2010
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Car: 1992 Camaro RS
Engine: 305 Throttle Body Injection
Transmission: Turbo-Hydramatic 700R4 four-speed
Re: unkown problem

i LOVE your camaro bible verse goin on there, that's ****
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