94 JGC fuel pump
 

Going through fuel pump failure again on my 94 JGC. No pressure at the
fuel rail and no error codes. Got almost 4 years out of this one.

Interesting failure mode this time around. I had been experiencing a
miss at idle at stop light for a couple weeks. Shifting to neutral
instead of drive with brake on had no effect.

It is dark and cold right now in Colorado so I will swap out the fuel
filter tomorrow and check the pump connector for corrosion when it is
light.

Re: 94 JGC fuel pump
 

japeters@mail.com did pass the time by typing:
> Going through fuel pump failure again on my 94 JGC. No pressure at the
> fuel rail and no error codes. Got almost 4 years out of this one.
>
> Interesting failure mode this time around. I had been experiencing a
> miss at idle at stop light for a couple weeks. Shifting to neutral
> instead of drive with brake on had no effect.
>
> It is dark and cold right now in Colorado so I will swap out the fuel
> filter tomorrow and check the pump connector for corrosion when it is
> light.

It might be the pump, but I'd check the fuse and relay first.

--
DougW

Re: 94 JGC fuel pump
 

japeters@mail.com did pass the time by typing:
> Going through fuel pump failure again on my 94 JGC. No pressure at the
> fuel rail and no error codes. Got almost 4 years out of this one.
>
> Interesting failure mode this time around. I had been experiencing a
> miss at idle at stop light for a couple weeks. Shifting to neutral
> instead of drive with brake on had no effect.
>
> It is dark and cold right now in Colorado so I will swap out the fuel
> filter tomorrow and check the pump connector for corrosion when it is
> light.

It might be the pump, but I'd check the fuse and relay first.

--
DougW

Re: 94 JGC fuel pump
 

japeters@mail.com did pass the time by typing:
> Going through fuel pump failure again on my 94 JGC. No pressure at the
> fuel rail and no error codes. Got almost 4 years out of this one.
>
> Interesting failure mode this time around. I had been experiencing a
> miss at idle at stop light for a couple weeks. Shifting to neutral
> instead of drive with brake on had no effect.
>
> It is dark and cold right now in Colorado so I will swap out the fuel
> filter tomorrow and check the pump connector for corrosion when it is
> light.

It might be the pump, but I'd check the fuse and relay first.

--
DougW

Re: 94 JGC fuel pump
 

japeters@mail.com did pass the time by typing:
> Going through fuel pump failure again on my 94 JGC. No pressure at the
> fuel rail and no error codes. Got almost 4 years out of this one.
>
> Interesting failure mode this time around. I had been experiencing a
> miss at idle at stop light for a couple weeks. Shifting to neutral
> instead of drive with brake on had no effect.
>
> It is dark and cold right now in Colorado so I will swap out the fuel
> filter tomorrow and check the pump connector for corrosion when it is
> light.

It might be the pump, but I'd check the fuse and relay first.

--
DougW

Re: 94 JGC fuel pump
 

Hi Doug,
Especially when thinking about having to drop the tank. Run a test
jumper.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

DougW wrote:
>
> It might be the pump, but I'd check the fuse and relay first.
>
> --
> DougW

Re: 94 JGC fuel pump
 

Hi Doug,
Especially when thinking about having to drop the tank. Run a test
jumper.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

DougW wrote:
>
> It might be the pump, but I'd check the fuse and relay first.
>
> --
> DougW

Re: 94 JGC fuel pump
 

Hi Doug,
Especially when thinking about having to drop the tank. Run a test
jumper.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

DougW wrote:
>
> It might be the pump, but I'd check the fuse and relay first.
>
> --
> DougW

Re: 94 JGC fuel pump
 

Hi Doug,
Especially when thinking about having to drop the tank. Run a test
jumper.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

DougW wrote:
>
> It might be the pump, but I'd check the fuse and relay first.
>
> --
> DougW

Re: 94 JGC fuel pump
 

I checked the error codes again and it threw a "41": "Alternator field
control open or shorted" according to Allpar.

Interesting observation, before I turned it off there was a lot of
static pops on the radio, sounded like ignition noise. Never heard this
before.

So fuel pump may be good to go. A bit more digging is in order.