Lacking fuel pressure!

[88GTMustang]

Is my pump going out or what? my car wont start because of it, with the key on and car not running it gets 30# of pressure and when i turn it over it drops to 20#, its fuel injected, but when i shoot a little bit of carb cleaner through the throttle body it fires right up. oh and by the way when i turn the key without start to let it pump, it never stops the pumping, the BZZZZ from the pump doesnt stop. Whats up with that?

 

[HISSIN50]

pressure wise, it could be the pump or the FPR.

good luck and bump for ya.

 

[Swarzkopf]

Sounds like the pump to me...the continuous buzz at startup seems to indicate that.

You can usually tell the pumps are going when they get louder.

 

[90pony302]

sorry to steal this thread but i got a problem with my pump.... it runs constantly no matter if the key is on or not. what do you guys think it could be.

 

[HISSIN50]

for a pump that wont stop (even with the car off), i would look for a latched Fuel pump relay. if not that, check the EEC relay for the same condition.

good luck.