05 grand am no power to fuel pump relay good what else

Asked by Mar 19, 2012 at 10:58 PM about the 2005 Pontiac Grand Am SE

Question type: Maintenance & Repair

The relay test ok I have no 12 volt power to the fuel pump

4 Answers

did you check this by yourself? you need two people to do it right. the fuel pump will only have power for about 5 seconds when you turn the key on. have your test light or meter on the purple wire near the fuel pump , have somebody turn the key on , do not crank it . if the test light comes on & then go off you have power to the pump. you only get contant power if the car is running.

1 of 1 people found this helpful.
Best Answer
4,585

Just to clarify: The fuel pump runs only until it reads minimum pressure in the fuel line. A bad fuel pressure regulator can shut the power to the pump. Disconnect the fuel line at the engine and attach a rubber gas-rated hose and clamp to the line running back to the tank. Use an air compressor to blow any gas in the line back into the tank, then put the hose end into a bottle or can. Have a friend turn the key to the on position while you check for voltage at the pump. If the pump is now running, you know its the fuel pressure regulator that's bad. If it's not running, you more than likely have a break in the hot wire. Have you tried running a temporary hot lead to the pump?

1 of 1 people found this helpful.

clarify what? the fuel pump doesn't read anything for one , the pressure regulator is mechanical not electric it regulates pressure to the injectors it can't possibley shut power to the pump.its impossible. fuel pump comes on there should be 40 psi on start up once the car is running it drops down to about 20-25psi somewhere around there.

1 of 1 people found this helpful.
98,085

Check the fuel pump fuse. The relay closes when the ignition is on but if the fuel pump fuse is blown, no power goes to the pump.

5 of 5 people found this helpful.

Your Answer

Add photo

Related Questions

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 1,183 nationwide Grand Am listings starting at $1,599.

ZIP:

Search Pontiac Grand Am Questions

Pontiac Grand Am Experts

#1 tenspeed
tenspeed
Reputation 7,690
#2 John Saffrahn
John Saffrahn
Reputation 1,600
#3 Tom Demyan
Tom Demyan
Reputation 1,440
View All

Related Models For Sale

Used Pontiac Grand Prix
30 Great Deals out of 2,863 listings starting at $1,600
Used Chevrolet Impala
591 Great Deals out of 34,068 listings starting at $899
Used Pontiac G6
91 Great Deals out of 4,082 listings starting at $1,650
Used Ford Mustang
543 Great Deals out of 45,845 listings starting at $1,999
Used Nissan Altima
1,156 Great Deals out of 79,666 listings starting at $500
Used Pontiac GTO
4 Great Deals out of 465 listings starting at $6,000
Used Chevrolet Malibu
1,062 Great Deals out of 77,909 listings starting at $1,500
Used Honda Accord
946 Great Deals out of 77,735 listings starting at $899
Used Honda Civic
811 Great Deals out of 88,099 listings starting at $1,299
Used Chevrolet Monte Carlo
20 Great Deals out of 1,419 listings starting at $1,995
Used Chevrolet Corvette
149 Great Deals out of 20,681 listings starting at $3,995
Used Pontiac Bonneville
4 Great Deals out of 511 listings starting at $1,799

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.