Mechanics

CHEVY FUEL PUMP RELAY LOCATION, VAN STALLS WHEN

1995 Chevrolet Astro

1995 Chevy Astro 6 cyl Two Wheel Drive Automatic

I am at a loss with this thing. It stalls and does not want to go anywhere when you give it gas. I have replaced the fuel pump this year 2 times and it runs for a while and then acts up again (ie stalling). I just got done replacing the fuel injectors, thinking that was the problem and its doing the same thing. Could it be the gas relay sensor? I bought the sensor but cannot figure out where it is to replace it anyone know it's located? I took the modular controll sensor to autozone to have it checked and they say its still good. I did that because I replace the modular control a couple years ago with these same symptoms and it fixed it and now problems again. My gas lines are a little rusted could it maybe be that I need to replace those? Please help Im at a loss. THanks
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Cincyrob30
September 6, 2009.




If you think it is a fuel pressure issue, use a gage and check fuel pressure. The fuel pump relay should be under the hood, passenger side firewall, or close to the fire wall, the relay closest to the engine. If in doubt which relay is which, look at the wiring colors at the connector, compare to wiring diagram. There should also be a prime connector close to the relay, gray wire with electrical connector, nothing plugged into it. If you run a jumper wire from B+ battery to the connector, the pump should run. You don't have to use the key. Use an inline fuse on the jumper. Do have the spider fuel system?

JDL
Sep 6, 2009.
Yes it's a spider injecter, which I just replaced. I'll check that area right now for it. I used a pressure checker and it reads 50 and then when I shut the engine off it drops to 10, I was told that when the engine shuts off it is supposed to hold pressure.

Tiny
Cincyrob30
Sep 6, 2009.
I found what I think is the fuel pump relay, I pulled it off and took it up to autozone to get a new one and the one they had did not fit back in there. I took it back up there and they said it is possibly a part I need to get from the dealer?
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Tiny
Cincyrob30
Sep 6, 2009.
Fuel pressure 58-64 psi, key on engine off. Right now, I don't think the relay is the problem.

JDL
Sep 7, 2009.

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