code 95

[1990Fox]

if i pull this code: 95 (O) Fuel pump: open, bad ground or always on - Power / Fuel Pump Circuits does it mean i need a fuel pump?

 

[jrichker]

No.
Best plan is to clear the codes & restest a after week or so of daily driving. Still have the code, plan on troubleshooting the wiring & relay.

Code 95 - the following test path is for 86-90 model Mustangs.

The 95 code is because at one time or another, the fuel pump relay hiccupped and didn't provide power the pump when the computer told it to run. Sometimes this is a one time thing, other times it is a no run or runs poorly condition.

To help troubleshoot the 95 code, follow this link for a wiring diagram http://www.autozone.com/images/cds/gif/large/0900823d80167162.gif

Using the diagram, check the red/black wire from the fuel pump relay: you should see 12 volts or so. If not, check the inertia switch: on a hatch it is on the driver’s side by the taillight. Look for a black rubber plug that pops out: if you don't find it, then loosen up the plastic trim. Check for voltage on both sides of the switch. If there is voltage on both sides, then check the Pink/black wire on the fuel pump relay: it is the power feed to the fuel pump. No voltage there, check the Orange/Lt blue wire, it is the power feed to the fuel pump relay & has a fuse link in it. If there is good voltage there & at the Pink/black wire, swap the relay.

Some Mass Air conversions neglect to run the extra fuel pump wire, and they always have a 95 code. See http://www.stangnet.com/tech/maf/massairconversion.html for more information on the Mass Air wiring conversion.

 

[1990Fox]

ok, where is the relay? i thought it was under the drivers seat and i found something with 4 wires red, lt.green and tan, orange, and the black and pink wire. so i pulled that and just to see i tried to start my car.... it started and i could here the fuel pump running.

I have a 1990 GT btw

 

[HISSIN50]

ok, where is the relay? i thought it was under the drivers seat and i found something with 4 wires red, lt.green and tan, orange, and the black and pink wire. so i pulled that and just to see i tried to start my car.... it started and i could here the fuel pump running.

I have a 1990 GT btw

As JR said, that's your FP relay. On earlier aero fox cars it had a bracket to bolt to, but I think they did away with that after a year or two.

Good luck.

 

[1990Fox]

so i obviously have a short or someone before me bypassed the relay because my car and pump still run.

 

[HISSIN50]

You weren't clear before.

You removed the fuel pump relay entirely?

And the pump still primed?

And the car started and ran for more than a few seconds?

Interesting.