Fuel regulator
TECH Enthusiast
Joined: Jul 2010
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What year,model. Some years and models it is mounted on the fuel rail and some are mounted in the fuel pump module.
This is a 99-2002 Firebird/Camaro fuel pimp module showing the pressure regulator.
To check operation, connect a fuel pressure gauge. Pressurize the fuel system and time how fast the pressure builds up.
Turn the key off and the pressure should hold for quite a long time.
Whit this test the pump could be faulty too.
This is a 99-2002 Firebird/Camaro fuel pimp module showing the pressure regulator.
To check operation, connect a fuel pressure gauge. Pressurize the fuel system and time how fast the pressure builds up.
Turn the key off and the pressure should hold for quite a long time.
Whit this test the pump could be faulty too.
Last edited by Ollie8974; Dec 2, 2011 at 09:01 AM.
Teching In
Joined: Sep 2011
Posts: 1
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Hello, I am having a problem with my 02 trans am. It has an extended start 
I checked the fuel pressure with the key on, car off and it shoots up to 58psi then a second later it drops and that's when the extended start begins. I also checked the fuel pressure with the car on idle and it's a steady 58psi and even when i accelerate it stays a steady 58psi. So, I'm leaning more towards the fuel pressure regulator being bad. Any feedback would be appreciated 
I checked the fuel pressure with the key on, car off and it shoots up to 58psi then a second later it drops and that's when the extended start begins. I also checked the fuel pressure with the car on idle and it's a steady 58psi and even when i accelerate it stays a steady 58psi. So, I'm leaning more towards the fuel pressure regulator being bad. Any feedback would be appreciated 
