My picture seems to look different then vaders, just want to make sure.





In vaders pic it was in the middle, I think mine might be the one on the far left?

 

From left to right... Fuel pump relay, fan relay, fan relay.

 

Oh Ok, got it.

I was going off this picture


Thanks!

 

That photo is an '86 model. It's also a Pontiac. We already know there are wiring differences between the two sides. The most certain method is to check the wire colors at the socket.

 

I don't think so, he has a MAF car. Fan relays are up near the battery.

 

8Mike9 is correct, in IROCThe5.7L's first post. The relays shown from left to right are Fuel pump relay, MAF Sensor power relay, and MAF Sensor Burn-off relay.

 

Hey... Looks like I was wrong... Guess I shouldnt assume so much.

 

It's not just you. The relays seem to be mounted in different orders/sequences in different years. I worked on a '91 that was quite differently arranged (probably since it was a MAP setup) and an '89 MAF car that was different than mine. That's why I suggested checking the wire colors.

 

Got it!


Once again, thank you all for replying



Too bad I cannot drive my car, its April and 27 degrees here. Not to mention its snowing

 

Well good news and bad news.

Good News: Pump would only prime the system to 15 Psi. Replaced the relay, now when it primes I get a solid 43 Psi.


Bad News: Still starts like crap after being ran. I went from 44psi to 15 Psi in 30 minutes. I then primed the pump, and it went back up to 44 Psi, and still started like crap.

I pulled the vacum line from the regulator when it was running, and there was no fuel, and my gage went up to 44 psi.



I have got to have a leaky injector[s]. I am going to start to take out my injectors tomorrow.

 

So far, you've proven that the pump is good, the regulator will maintain pressure and modulate it based on vacuum, and that teh regulator dosn't leak externally. It's still possible that the regulator is leaking through and your injectors are O.K. You need to perform the pressure leakdown check again with the fuel return line pinched closed.

 

Vader, I do have a holley AFPR in my room waiting to be installed, so the intake is going to have to come apart anyway. Do you think I should send the injectors to Rich for the hell of it, even if they arent the problem? They are the stock ones and are pretty old.......

 

Sending them is always good if you have the chance.

 

Is there any difference between the MAF power relay and MAF Burnoff Relay??? They look identical to me. I bought the maf relay the other day, and wanted to install it, but hesitated as I could not tell which was which. Mine are installed in a smiliar arrangement!


Could someone tell me again what the relay on the far right is, down towards the lower edge of the photo. Thanks guys!

Will

 

The MAF power relay & the MAF burn-off relay are the same part number, the only difference is the wires going into it.That other relay you are asking about is the fog light relay.

 

Thans bro, you rock! Also which one of the two is which, Power/Burnoff? I am getting an SES light intermitently and sometimes the car just shuts off seconds after startup. I am guessing the burnoff relay would most likely go bad first? I wanna replace the one most likely to cause the fault NOW and get the other one maybe tomorrow or something!

Will

 

From left to right in your picture, with the white relay being the Fuel Pump relay, the center one is the MAF power relay, & the one on the right is the MAF Burn-off relay.