1990 fox starts on starting fluid only

Jfox · May 14, 2026

1990 convertible 5.0,switched to a manual several years ago I drove it last summer parked for the winter went to start this year and the fuel pump comes on but will not shut off it will only start when I take the intake tube off and spray starting fluid in it.I reattach the intake tube back on it it will run an idle.when i shut it off it won't start back unless i spray starting fluid again.It holds fuel pressure on the gauge.Alternator was charging 17 volts idling for some reason.My battery went dead overnight.Has a parasitic draw. I pulled the fuse out one by one and my test light didn't change any

AeroCoupe · May 14, 2026

Several issues here. One is that the fuel pump just stays running and that screams the ECU needs to be sent to ECU Exchange and rebuilt. The other it that not all parasitic draws can be eliminated by pulling a fuse. There are a couple of fusible links on the starter solenoid that have non-fused draws. If you swapped over to a mini starter then that could be the draw as well. You need to figure out the 17 volt charging issue as well.

What all has been down to the car? Mini starter, 3G swap, stereo, etc. Anything that is not stock needs to be listed.

General karthief · May 14, 2026

Try to pull codes, a.constant fuel pump running is usually a computer glitch, if you can't get codes.then the computer need checked out.......
Nevermind Coupe' there is quicker on the keyboard than my old azz

AeroCoupe · May 15, 2026

Yeah but I didn’t mention pulling codes as that should be the first thing we do.

When you check for codes at a minimum you should get an 11 then a 10 and then an 11. This means there are no codes and everything checks out good. If you get no codes or the ECU does not perform the tests then it most likely your ECU.

2000xp8 · May 15, 2026

The first thing I would do is probably slap the fuel pump relay with something hard. They do get stuck in the on position.
Free and probably should only take a few seconds.

Jfox · May 15, 2026

AeroCoupe said:
Several issues here. One is that the fuel pump just stays running and that screams the ECU needs to be sent to ECU Exchange and rebuilt. The other it that not all parasitic draws can be eliminated by pulling a fuse. There are a couple of fusible links on the starter solenoid that have non-fused draws. If you swapped over to a mini starter then that could be the draw as well. You need to figure out the 17 volt charging issue as well.

What all has been down to the car? Mini starter, 3G swap, stereo, etc. Anything that is not stock needs to be listed.

Stock starter,stereo, nothing has been done to car.I had alternator checked they said it was bad,so I ordered a new 1 and fuel pump also.Once I spray with starting fluid starts right up,I can shut it off and start without fluid a couple times.

Jfox · May 15, 2026

It's just hard to believe all this goes bad just sitting inside a heated garage for winter

Jfox · May 15, 2026

Definitely slapped it,changed it out also

General karthief · May 15, 2026

AeroCoupe · May 15, 2026

See if you can pull codes.

1990 fox starts on starting fluid only

Jfox

New Member

AeroCoupe

lube between the nut and the face. I know my lubes

General karthief

wonder how much it would cost to ship you a pair

AeroCoupe

lube between the nut and the face. I know my lubes

2000xp8

Jfox

New Member

Jfox

New Member

Jfox

New Member

General karthief

wonder how much it would cost to ship you a pair

AeroCoupe

lube between the nut and the face. I know my lubes

Similar threads

1990 fox starts on starting fluid only

New Member

lube between the nut and the face. I know my lubes

wonder how much it would cost to ship you a pair

lube between the nut and the face. I know my lubes

New Member

New Member

New Member

wonder how much it would cost to ship you a pair

lube between the nut and the face. I know my lubes

Similar threads

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