I have a 1992 Mustang Gt 5.0 and I’m having a problem with it shutting off when it’s running. The problem started a long time ago and was extremely random and it would just shut off for maybe 1-5 seconds and then the engine would automatically turn back on (I assume because I was driving down the road and since it’s a 5-speed, it fired back up because of the wheels turning the motor). However, the problem is getting a lot worse and a lot more frequent.
I put a scanner on it and read the codes and it came up with 3 codes: 34, 67, & 96.
34 = Insufficient EGR flow or EVP voltage hight (SONIC) or PFE sensor voltage high or out of specification.
67 = Clutch switch circuit failure / neutral drive switch (NDS) circuit failure, circuit open; or A/C input high.
96 = Fuel pump secondary circuit fault / high speed fuel pump relay open.
After doing some research on this problem, it seems that the problem might be the fuel pump relay. I wasn’t sure where the relay was located, but what I was told is that it’s either under the driver’s seat or on the passenger side fender well in front of the shock tower. Upon inspecting my car, I found two relays on the passenger side fender well in the front of the shock tower. From what I was told, one relay is for the A/C cutoff at WOT and the other is the fuel pump relay.
So I went to NAPA and bought a new fuel pump relay. When I got home and went to install it, I discovered the shape, size and pins weren’t the same as the one on my car (SEE PICTURES). All the research I’ve done shows the fuel pump relay is the same as the one I bought from Napa (on the right in the pictures). But as you can see, mine is a different size and shape and has more of a standard relay pin layout.
Is the relay I found on my car the fuel pump relay or is it something else? If it’s not, where is it located? If this is the fuel pump relay, why is it different than the one from Napa and all the other auto part stores I’ve looked at? Autozone has the same relay as Napa, which is different than mine. Not sure what to do at this point. I don’t know what relay I have or what to buy to replace it. Can anyone shed some light on this? Thanks.
I put a scanner on it and read the codes and it came up with 3 codes: 34, 67, & 96.
34 = Insufficient EGR flow or EVP voltage hight (SONIC) or PFE sensor voltage high or out of specification.
67 = Clutch switch circuit failure / neutral drive switch (NDS) circuit failure, circuit open; or A/C input high.
96 = Fuel pump secondary circuit fault / high speed fuel pump relay open.
After doing some research on this problem, it seems that the problem might be the fuel pump relay. I wasn’t sure where the relay was located, but what I was told is that it’s either under the driver’s seat or on the passenger side fender well in front of the shock tower. Upon inspecting my car, I found two relays on the passenger side fender well in the front of the shock tower. From what I was told, one relay is for the A/C cutoff at WOT and the other is the fuel pump relay.
So I went to NAPA and bought a new fuel pump relay. When I got home and went to install it, I discovered the shape, size and pins weren’t the same as the one on my car (SEE PICTURES). All the research I’ve done shows the fuel pump relay is the same as the one I bought from Napa (on the right in the pictures). But as you can see, mine is a different size and shape and has more of a standard relay pin layout.
Is the relay I found on my car the fuel pump relay or is it something else? If it’s not, where is it located? If this is the fuel pump relay, why is it different than the one from Napa and all the other auto part stores I’ve looked at? Autozone has the same relay as Napa, which is different than mine. Not sure what to do at this point. I don’t know what relay I have or what to buy to replace it. Can anyone shed some light on this? Thanks.