93 chevy 2500

jordan281990 · 09-25-2009, 10:43 PM

anyone know of a way to check to see if the fuel pump is working?

BernieB · 09-25-2009, 11:43 PM

"Check for pressure" is the first way that comes to mind.

gmctrucks · 09-26-2009, 04:41 AM

Listen if you hear it when you turn on the key on.

leolkfrm · 09-26-2009, 06:48 AM

loosen the fuel line, and turn the key on....but don't smoke!
just because the pump is not running does not mean it is bad. run a bypass power to it, it may be a bad wire or ground

jordan281990 · 09-26-2009, 07:46 AM

checked it with the key on and u can hear it. sometimes it will get gas and start and sometimes it will stop getting gas

bradrhale · 09-26-2009, 06:20 PM

listen for pump. if hear it, rent a pressure checker. TBI requires a certain pressure to fire the injectors so the pump may be weak. if good there, you can rule out a bad pump.

formulabruce · 09-30-2009, 12:07 AM

Quote:

Originally Posted by jordan281990

checked it with the key on and u can hear it. sometimes it will get gas and start and sometimes it will stop getting gas

mine did same thing, so new sender, new pump, new tank, and the biggie $$ new GM lines to front of truck ( all 3)
Hope you dont live where theres rust...
OH and the repop tanks do not have any baffles, so you can get gas guage activity on corners like a tachometer LOL

09-25-2009, 10:43 PM	#1
jordan281990 Full Member Join Date: Sep 2009 Location: Illinois Posts: 15	93 chevy 2500 anyone know of a way to check to see if the fuel pump is working?

09-25-2009, 11:43 PM	#2
BernieB Senior Member Join Date: Jul 2009 Location: Fredericksburg, VA Posts: 1,906	"Check for pressure" is the first way that comes to mind. __________________ If the guys who design 'em had to take one home, use it every day for 2 years, and do all the maint and repairs themselves, cars would have a button on the dash to change the oil, filters & plugs.

09-26-2009, 06:48 AM	#4
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,300	loosen the fuel line, and turn the key on....but don't smoke! just because the pump is not running does not mean it is bad. run a bypass power to it, it may be a bad wire or ground __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

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09-26-2009, 04:41 AM	#3
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,035	Listen if you hear it when you turn on the key on.

09-26-2009, 07:46 AM	#5
jordan281990 Full Member Join Date: Sep 2009 Location: Illinois Posts: 15	checked it with the key on and u can hear it. sometimes it will get gas and start and sometimes it will stop getting gas

09-26-2009, 06:20 PM	#6
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,030	listen for pump. if hear it, rent a pressure checker. TBI requires a certain pressure to fire the injectors so the pump may be weak. if good there, you can rule out a bad pump.