im having another problem with my iroc. it seemed that the fuel pump gave out but, its changed and still not working. when I turn the key the system doesnt charge the fuel pump. where should i look next? what about the fuel pump relay? where is it too? any suggestions would be great since im at a loss of where to look next.Oh yeah the car is a 87 irocz 350 tpi 5 speed.

 

Fuel pump relay is either on the fire wall or under the dash on the passenger side. It may be just a fuse...

 

the fuse is the first thing i checked an checked again and it is fine. how do I know what relay is for the fuel pump?

 

do a search for driveside relays , or something to that effect. It's been posted alot . So you should find it easy .

 

Which one did you check? Did you check the fuse near you're battery as well?

 

Couple things to check here, first check the fuse by the battery, look for a connector with 2 heavy orange wires on it there is a 20 amp fuse in there.
A quick way to tell is to turn the key to on, if the ses light doesn't light up that fuse is most likely blown.
The fuel pump relay is on the firewall by the brake booster there are 3 relays there, one with 4 wires(burn off relay), and 2 with 5 wires, the fuel pump relay has a green/white wire in the bundle.

Hope this helps

 

First thing to do is make sure the pump works. 12v to the G terminal of the ALDL will get that out of the way. What year car?

 

the engine light was not on. it was a single wire coming from the front of the car with a single connection that was disconnected. now the pump is pumping and the car starts but now the engine light is on and whenever i touch the gas the car tries to shut off at the slightest touch. atleast now i got fuel.
anyone got any more suggestions they will be greatly appreciated.

 

I would start by checking the codes.

 

I had a bad injecotor that made the car work like that . Barely starts , hit the gas and she would die . Ohm out the injectors

 

the wiring to your vats module might be bad. if its not gettin the correct voltage then it wont let your fuel pump engage.

 

no vats on this car.

 

anyone?
i changed the tps today and its still the same.
also the fuel pressure is only 10 psi. what do i check for?

 

If you changed the pump already...

-Check the fuel filter, might be clogged?
-Check your pressure regulator, might be weak or torn

 

If your preasure drops quickly it's either the regulator or a leaky injector .

 

i have changed the filter today, same as before still.
checked the fuel pressure and its 12psi so i blocked off the return line and it is still 12 psi.
how do i check the injectors?
do i check the injector or use the node tester?

Thanks.

 

well, i found out today that the fuel pump gm gave me was the wrong one. so now im gonna have to order the right one and do it all over again. damn they are gonna pay. in there parking lot when i get it fixed.

Thanks for all the help.

 

finally the car is up and running again, i got the new filter today and installed in about 1.5 hours. man im not too happy about the mess up but hey people make mistakes.

Thanks Joe.