Hello and appreciate y’all reading this.

Just hit 150k. Drove this beauty from west coast to east coast this spring. Been running great just replaced timing belt and put new front shocks on was out testing how they feel, was about 10 miles down the highway cruising at about 70 rpms dropped and it stalled out. Put in neutral it turned over a little bit hasn’t started since.

It cranks no ignition. So I started trouble shooting checked the fuel line (watched a video) getting no gas. Checked the relay and fuse. Both seem to be working correctly. (My relay is blue sitting on top of a odd black box next to the rear passenger side tailight box, sitting on top with a spot for the clip. )







so removed the wire plugging into the top of gas tank set my voltage tester up and took a video I’ll post a screen shot but it barely lit up. The relay and that lights it up bright. This is a tiny little glow so barely any power to fuel pump is the voltage supposed to be super low ? I also found 2 disconnected wires near where the pump wires go into a large group of wires.
fuel pump was replaced about 15k miles ago.


any input would be appreciated. Thanks !

 

Are you getting any RPMs on the tach when you crank the engine? Tthe needle should move indicating the crank sensor is operating properly. If no movement check the connector. Also check the oxygen sensor heater relay on the firewall, swap it with the one next to it see if that makes a difference.

 

yes it flutters up to about 200/300 rpms. Do you know what color the wires are for that? Their are no labels or diagram. I cleaned all the receptors and relays with a wire brush their was a touch of corrosion.

 

Search the archive for link to Haynes manual download online. It will show you what is what.

The oxygen sensor heater relay can stop fuel pump if defective. It is located on the passenger side firewall on the left of the group. It's mounted in the yellow socket.

 

thanks!

 

socket has power, the relay from yellow socket clicks when i put it in a different socket no clicking when either a different relay or the same one is put in yellow socket.

still won’t turn over.

 

When you turn on the ignition, (with everything connected) can you hear the fuel pump prime for a second or two?

Regarding your sudden stop while driving ....In my experience, when a fuel pump fails, it's almost always due to the pump motor having a problem impulsing and starting up, often due to a bad section of the armature - however, once it starts spinning, it will continue to run.

In other words, it doesn't fail while driving. This is why the tow truck driver's get-you-home fix for a failed pump was to bang on the tank with an axe handle. That caused the pump armature to move slightly from the "stuck" position allowing the pump to spin up. As long as the driver kept the car running they could drive home.

So your pump could be ok.

Your fuse boxes are located in each footwell behind a cover secured by plastic screw, the description for each fuse is on the back of the cover. Check your fuses.

 

Their is a slight whirring noise as far as I can tell. Will have someone else flip key while I listen in the trunk.
forgot to mention I already checked all fuses.
the picture I posted with the dim light glow is the power supply wire to the fuel pump. Everything else including fuel pump relay he a bright glow.
before I spend the time taking out the fuel pump I would like to make sure it is pump.

 

I'm a bit suspicious of that dim glow in the power to the pump you reported in earlier posts.
Try hot wiring the pump direct to the battery. A 93 model should have the battery in the trunk and be easy to get to.
If that works, then I suggest the possibility of burnt/corroded contacts in a relay.

 

so I have swapped the relay and it clicks and seems to be working however the pump is not turning on. After much poking and prodding I’m wondering where the ground is for the fuel pump power wire. Any idea?
After swapping relay still low voltage to pump, the wire to pump has a wider part in a rubber casing not sure of the technical name (not stock from photos I’ve seen online. )
I read on the post I saw the photo in that it can burn out.


trying to find some spare wire to power the pump directly. Thanks.

 

good news ! The ground to the fuel pulp attaches at the back passenger wheel hub with a really rinky dink plastic connector and it had come undone. Re ground it. Now I’m getting fuel in the line and can hear the pump. It ran for about 30 seconds before sputtering out which is a bit odd but it seems flooded and like it wants to back fire.

So my ground cable is a bit coroded and had snapped off the connector while I was trying to fix this. Bought a replacement the guy at Napa assured me was the same voltage or however you say it as the original , half the size and
Silver thick wires instead of copper. Car now doesn’t seem to be getting a ground anything specific about the main battery ground I should be aware of ?

 

scratch that. I had the fuel pump grounded must of been in a sweet spot ( two tiny wires) lost fuel pumping after I tried to ground them better. Also found a yellow wire that goes with the fuel pump ground but is disconnected. When I give it power the fuel pump starts working.

Disconnected wire

This is where the two wires (grounds go from pic below our trunk to wheel well. )

This is the receptor? The yellow wire seems to be running towards that the two grounds go out of.

This is the two grounds and broken clip.

 

Also another thing I noticed is the relay for fuel pump only has power to the back post. All others under the hood have power to 3. Swapped the relay still the same power amount. Tomorrow my new fuel pump comes in debating even installing it if the pump doesn’t seem to be getting power.

 

It's a fuel pump problem on 93 and 94 when car stop suddenly and start after?
It's pump axle problem that block

 

Fixed it was my fuel pump ground.