91 Wrangler Fuel Pump Wiring

Rockauto ships auto parts and body parts from over 300 manufacturers to customers doors worldwide all at warehouse prices. This trouble code detects that the fuel rail system pressure is too low. After replacing the crank sensor the coil and the fuel pump twice i started chasing wires looking for a bad ground.

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91 wrangler fuel pump wiring. Fuel pump sending unit fit jeep wrangler 91 95 5003861aa yj 20 gal 4 0l set fits. The engine may throw a p0087 trouble code. Thank you very much for the help. Easy to use parts catalog.

A step by step guide for how to connect the new wiring harness that may be supplied with your new fuel pump. Jeep wrangler yj drop the gas tank on rust bucket and show fuel pump. What i did was unlug the harness take a 12v power source battery charger 2 small wires 1 and 1 stick them into the outside 2 sockets of the harness the center doesn t matter because it is the sending unit. There are 3 wires that go to my fuel pump and the center which is the sending unit.

The wiring diagrams help a ton but i am still a little rusty understanding them. I did this when i thought it was the fuel pump. 91 wrangler fuel guage issues pull up a wiring diagram on year of his jeep if you haven t done so already. 1991 jeep wrangler 5 out of 5 stars 1 product rating 1 product ratings fuel pump sending unit fit jeep wrangler 91 95 5003861aa yj 20 gal 4 0l set.

I have power to fuse 9 and to the auto shutdown relay as well as power to the fuel pump relay but only across pins 30 85 1 5 on the diagram. Looks like coming off the pcm there s a wire that goes to the brake switch and a wire that comes off the brake switch that ties into the fuel pump relay and the automatic fuel pump shut down relay. Fuse box in passenger compartment. We have a 1991 jeep wrangler 4 0 and we changed the fuel pump and now the coil is getting no fire when i hook the battery back up my 1991 wrangler would alternate between no spark and no fuel.

Jeep wrangler bad fuel pump symptoms. Before taking anything apart check to see if your engine s computer has any trouble codes saved in it. There are physical signs that you can feel when your wrangler s fuel pump is going out. For the jeep wrangler yj 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 model year.