"nrs" <neale_rs@yahoo.com> wrote in message
news:1191334363.228020.158000@50g2000hsm.googlegro ups.com...
On Oct 2, 1:50 am, bllsht <nos...@dot.net> wrote:
> It doesn't wait for anything. If you've verified the grounds, battery
> feed and and power from the ignition switch, the PCM is toast.
>
>
>
> On Mon, 01 Oct 2007 14:33:44 -0000, nrs <neale...@yahoo.com> wrote:
>
> >Does anyone know if the ´95 YJ PCM waits for a signal from any sensor
> >before providing ground for turning on the check engine light, ASD
> >relay and fuel pump relay?
>
> >Thanks- Hide quoted text -
>
> - Show quoted text -

Yup, I verified all these things and they are just about perfect. I
was pretty sure and hoping one of these would be bad. I took it to
the dealership today for diagnostic check just to make sure but at
this point I'll most likely have to buy a computer.

If I get a used computer, what do I need to look out for to make sure
it is the right one?

Make sure the part # on the new one matches the part # on the old one.

 

"nrs" <neale_rs@yahoo.com> wrote in message
news:1191334363.228020.158000@50g2000hsm.googlegro ups.com...
On Oct 2, 1:50 am, bllsht <nos...@dot.net> wrote:
> It doesn't wait for anything. If you've verified the grounds, battery
> feed and and power from the ignition switch, the PCM is toast.
>
>
>
> On Mon, 01 Oct 2007 14:33:44 -0000, nrs <neale...@yahoo.com> wrote:
>
> >Does anyone know if the ´95 YJ PCM waits for a signal from any sensor
> >before providing ground for turning on the check engine light, ASD
> >relay and fuel pump relay?
>
> >Thanks- Hide quoted text -
>
> - Show quoted text -

Yup, I verified all these things and they are just about perfect. I
was pretty sure and hoping one of these would be bad. I took it to
the dealership today for diagnostic check just to make sure but at
this point I'll most likely have to buy a computer.

If I get a used computer, what do I need to look out for to make sure
it is the right one?

Make sure the part # on the new one matches the part # on the old one.

 

"nrs" <neale_rs@yahoo.com> wrote in message
news:1191334363.228020.158000@50g2000hsm.googlegro ups.com...
On Oct 2, 1:50 am, bllsht <nos...@dot.net> wrote:
> It doesn't wait for anything. If you've verified the grounds, battery
> feed and and power from the ignition switch, the PCM is toast.
>
>
>
> On Mon, 01 Oct 2007 14:33:44 -0000, nrs <neale...@yahoo.com> wrote:
>
> >Does anyone know if the ´95 YJ PCM waits for a signal from any sensor
> >before providing ground for turning on the check engine light, ASD
> >relay and fuel pump relay?
>
> >Thanks- Hide quoted text -
>
> - Show quoted text -

Yup, I verified all these things and they are just about perfect. I
was pretty sure and hoping one of these would be bad. I took it to
the dealership today for diagnostic check just to make sure but at
this point I'll most likely have to buy a computer.

If I get a used computer, what do I need to look out for to make sure
it is the right one?

Make sure the part # on the new one matches the part # on the old one.

 

"Mike" <mik@localnet.com> wrote in message
news:HpsMi.17934$ya1.12361@news02.roc.ny...
>
> "nrs" <neale_rs@yahoo.com> wrote in message
> news:1191334363.228020.158000@50g2000hsm.googlegro ups.com...
> On Oct 2, 1:50 am, bllsht <nos...@dot.net> wrote:
> > It doesn't wait for anything. If you've verified the grounds, battery
> > feed and and power from the ignition switch, the PCM is toast.
> >
> >
> >
> > On Mon, 01 Oct 2007 14:33:44 -0000, nrs <neale...@yahoo.com> wrote:
> >
> > >Does anyone know if the ´95 YJ PCM waits for a signal from any sensor
> > >before providing ground for turning on the check engine light, ASD
> > >relay and fuel pump relay?
> >
> > >Thanks- Hide quoted text -
> >
> > - Show quoted text -
>
> Yup, I verified all these things and they are just about perfect. I
> was pretty sure and hoping one of these would be bad. I took it to
> the dealership today for diagnostic check just to make sure but at
> this point I'll most likely have to buy a computer.
>
> If I get a used computer, what do I need to look out for to make sure
> it is the right one?
>
> Make sure the part # on the new one matches the part # on the old one.
>
>
For a 1995 YJ four cylinder I think the only two PCM part numbers are likely
to be California and 49 State. Any large recycler in the U.S. will have a
parts interchange catalog that will tell you which vehicles are valid
donors. They get this information better than the dealers. The possibility
exists that earlier vehicles and the four cylinder Cherokee are a match too.
The dealer can tell you the current part number for your PCM and whether it
has been superseded in service parts. This can be helpful if you find a new
replacement at a reasonable price.

Cheers,

Earle

 

"Mike" <mik@localnet.com> wrote in message
news:HpsMi.17934$ya1.12361@news02.roc.ny...
>
> "nrs" <neale_rs@yahoo.com> wrote in message
> news:1191334363.228020.158000@50g2000hsm.googlegro ups.com...
> On Oct 2, 1:50 am, bllsht <nos...@dot.net> wrote:
> > It doesn't wait for anything. If you've verified the grounds, battery
> > feed and and power from the ignition switch, the PCM is toast.
> >
> >
> >
> > On Mon, 01 Oct 2007 14:33:44 -0000, nrs <neale...@yahoo.com> wrote:
> >
> > >Does anyone know if the ´95 YJ PCM waits for a signal from any sensor
> > >before providing ground for turning on the check engine light, ASD
> > >relay and fuel pump relay?
> >
> > >Thanks- Hide quoted text -
> >
> > - Show quoted text -
>
> Yup, I verified all these things and they are just about perfect. I
> was pretty sure and hoping one of these would be bad. I took it to
> the dealership today for diagnostic check just to make sure but at
> this point I'll most likely have to buy a computer.
>
> If I get a used computer, what do I need to look out for to make sure
> it is the right one?
>
> Make sure the part # on the new one matches the part # on the old one.
>
>
For a 1995 YJ four cylinder I think the only two PCM part numbers are likely
to be California and 49 State. Any large recycler in the U.S. will have a
parts interchange catalog that will tell you which vehicles are valid
donors. They get this information better than the dealers. The possibility
exists that earlier vehicles and the four cylinder Cherokee are a match too.
The dealer can tell you the current part number for your PCM and whether it
has been superseded in service parts. This can be helpful if you find a new
replacement at a reasonable price.

Cheers,

Earle

 

"Mike" <mik@localnet.com> wrote in message
news:HpsMi.17934$ya1.12361@news02.roc.ny...
>
> "nrs" <neale_rs@yahoo.com> wrote in message
> news:1191334363.228020.158000@50g2000hsm.googlegro ups.com...
> On Oct 2, 1:50 am, bllsht <nos...@dot.net> wrote:
> > It doesn't wait for anything. If you've verified the grounds, battery
> > feed and and power from the ignition switch, the PCM is toast.
> >
> >
> >
> > On Mon, 01 Oct 2007 14:33:44 -0000, nrs <neale...@yahoo.com> wrote:
> >
> > >Does anyone know if the ´95 YJ PCM waits for a signal from any sensor
> > >before providing ground for turning on the check engine light, ASD
> > >relay and fuel pump relay?
> >
> > >Thanks- Hide quoted text -
> >
> > - Show quoted text -
>
> Yup, I verified all these things and they are just about perfect. I
> was pretty sure and hoping one of these would be bad. I took it to
> the dealership today for diagnostic check just to make sure but at
> this point I'll most likely have to buy a computer.
>
> If I get a used computer, what do I need to look out for to make sure
> it is the right one?
>
> Make sure the part # on the new one matches the part # on the old one.
>
>
For a 1995 YJ four cylinder I think the only two PCM part numbers are likely
to be California and 49 State. Any large recycler in the U.S. will have a
parts interchange catalog that will tell you which vehicles are valid
donors. They get this information better than the dealers. The possibility
exists that earlier vehicles and the four cylinder Cherokee are a match too.
The dealer can tell you the current part number for your PCM and whether it
has been superseded in service parts. This can be helpful if you find a new
replacement at a reasonable price.

Cheers,

Earle

 

"Mike" <mik@localnet.com> wrote in message
news:HpsMi.17934$ya1.12361@news02.roc.ny...
>
> "nrs" <neale_rs@yahoo.com> wrote in message
> news:1191334363.228020.158000@50g2000hsm.googlegro ups.com...
> On Oct 2, 1:50 am, bllsht <nos...@dot.net> wrote:
> > It doesn't wait for anything. If you've verified the grounds, battery
> > feed and and power from the ignition switch, the PCM is toast.
> >
> >
> >
> > On Mon, 01 Oct 2007 14:33:44 -0000, nrs <neale...@yahoo.com> wrote:
> >
> > >Does anyone know if the ´95 YJ PCM waits for a signal from any sensor
> > >before providing ground for turning on the check engine light, ASD
> > >relay and fuel pump relay?
> >
> > >Thanks- Hide quoted text -
> >
> > - Show quoted text -
>
> Yup, I verified all these things and they are just about perfect. I
> was pretty sure and hoping one of these would be bad. I took it to
> the dealership today for diagnostic check just to make sure but at
> this point I'll most likely have to buy a computer.
>
> If I get a used computer, what do I need to look out for to make sure
> it is the right one?
>
> Make sure the part # on the new one matches the part # on the old one.
>
>
For a 1995 YJ four cylinder I think the only two PCM part numbers are likely
to be California and 49 State. Any large recycler in the U.S. will have a
parts interchange catalog that will tell you which vehicles are valid
donors. They get this information better than the dealers. The possibility
exists that earlier vehicles and the four cylinder Cherokee are a match too.
The dealer can tell you the current part number for your PCM and whether it
has been superseded in service parts. This can be helpful if you find a new
replacement at a reasonable price.

Cheers,

Earle

 

On Oct 1, 9:33 am, nrs <neale...@yahoo.com> wrote:
> Does anyone know if the ´95 YJ PCM waits for a signal from any sensor
> before providing ground for turning on the check engine light, ASD
> relay and fuel pump relay?
>
> Thanks

Thanks for all the help. I'll post the final outcome to let you all
know how it turns out.

 

On Oct 1, 9:33 am, nrs <neale...@yahoo.com> wrote:
> Does anyone know if the ´95 YJ PCM waits for a signal from any sensor
> before providing ground for turning on the check engine light, ASD
> relay and fuel pump relay?
>
> Thanks

Thanks for all the help. I'll post the final outcome to let you all
know how it turns out.

 

On Oct 1, 9:33 am, nrs <neale...@yahoo.com> wrote:
> Does anyone know if the ´95 YJ PCM waits for a signal from any sensor
> before providing ground for turning on the check engine light, ASD
> relay and fuel pump relay?
>
> Thanks

Thanks for all the help. I'll post the final outcome to let you all
know how it turns out.