this is on the 82.....

replaced pump relay.. and also checked power to the fuel pump fuse and also power to the relay, everything there checks out ok.. car will start then die instantly cause i have an aftermarket pump up front to boost pressure(i know but i didnt wanna take the tank out ) but i dont hear the clicking i normally hear.. and if i take the fuel hose off at filter up front(before the aftermarket pump) there is 0 fuel coming out with key on.

what else should i check before takin the tank out and replacing pump(if thats what it is)

ive also heard theres a fuel pump switch.. where is that at?

thanks

feel free to move this.. didnt know which one to post it lol :lala:

 

noone knows anything else to test?

 

 

The switch that I believe they are talking about is the oil pressure switch, it is a back-up to the fuel pump relay. It is located near the oil filter on the drivers side.

 

can that not working cause the fuel pump not to work? cause i got oil pressure if i do get it running(will run for few seconds)

 

You can check the fuel pump in the tank by applying 12 volts DC to pin "G" of the ALDL and grounding it at pin "A" of the ALDL. Have someone stand by the fuel tank to listen for the pump, although you should hear it in the car.

 

thanks that helps alot should key be on or off?

 

i have an '89 iroc, HO305, 700r, tpi. can i use this same diagram to test my fuel pump? The car will crank and then die immediately.

 

Yep.