96 park avenue fuel pump relay location

[ka9mgd]

Update:: I got the car to die with the test light connected to the gray wire under the seat.The car died then the test light went out about 15 seconds later. What does that tell me?

[Mickey#1]

The PCM controls when the fuel pump gets power. When the key is turned to the run position the PCM will energize the fuel pump relay for 2-3 seconds. The relay is also energized while cranking & of course after the engine starts. I would expect it to cut power after the engine stalls.

[ka9mgd]

Update: I found the grounds like the picture shows-Connections looked good but cleaned the ground strip and re-installed, Car still dies.

[Mickey#1]

What made you think the problem was with the fuel pump?

[ka9mgd]

I sure am leaning towards dropping the tank down but what really confuses me is why would the pump quit and then restart? I will wait until tomorrow to see if any one has any other ideas.

[ka9mgd]

answer to Mickey#1 questions.It is not supercharged-not the ultra model.
I did try another relay but still no help.What would happen if I ran A hot at all time wire to the gray wire going to the pump.Would that backfeed and burn out a computer or other expensive item?

[Mickey#1]

Sorry about my previous post - I forgot you confirmed the fuel pressure problem with a gauge.

You checked the grounds & confirmed with the test light that you have power going to the pump when it stalls. It does sound like it's time to drop the tank.

[HotZ28]

It appears the Park Ave fuel pump does not have power coming from the oil pressure sender

Good catch Mickey#1! It does appear that the VIN K may not use the alternate feed from the oil pressure-sending unit. Sent another email along with a diagram for both VIN K & VIN 1. The VIN 1 has a fuel pump control module, and that looks like the only difference in the 96 PA VIN K & 1.

[ka9mgd]

I was wandering if something is telling the pcm to sut down the fuel pump..but has that allready been rulled out since I have power on the gray wire untill after the pump shuts down. Has anybody ever seen a pump shutdown and then restart like this one does?
One other note: I did look under the car and found a loose fuel line-Probably a loose return line.Are these hard to repair?I have never worked with plastic lines before. It does not appear to have gas thrown out around the line yet but I will have to fix it.Looks like maybe gas has been thrown on the under floor side on the other side of the car under the fill tube.I am going to drop the tank today and check the fuel connectors and the electrical connectors on top of the tank at least and probably go ahead with a new pump at this point and a new sock-The fuel looked odd when I changed the filter.
This car was involved in a collission and had body damage on the right side near the fuel tank a couple of years ago and I am thinking that may be why I have a loose fuel line or a sloppy body shop repair. I will let you guys know what I find. I really appreciate the help here.I hope my questions have helpped jogged your brains and helped you fix some of your car woes.

[ka9mgd]

Thanks to all who responded,
I decided to drop the tank today and take a look see at the harness at the top of the sending unit-It looked fine and since I could not find a connector harness locally I went ahead and replaced the fuel pump and sock..
I have driven the car 34 miles today and no stalling! I will not jump for joy untill I take a little further trip tomorrow.I just did not think a pump would shut down like this and then imediately restart.

[Mickey#1]

HotZ - That's the 1st pre-2000 3.8 I've seen that didn't have it.

ka9mgd - Glad you got it going.

[ka9mgd]

Update: I am considering the car fixed-I drove it 52 miles today and no stalling issues

[HotZ28]

Congratulations! Let this thread be a model for others with similar fuel pump malfunctions! Your diagnosis methods were indeed intriguing and should prove beneficial to others. Thanks again for the feedback and we hope you have many more happy trouble free miles ahead!