Help with Crank Position Sensor - 89 Jeep Cherokee LTD
 

Hi Guys:

I'm hoping that someone can offer advice on this....

I have a 1989 Jeep Cherokee LTD.

I've often wondered if the CPS is weak. I know that there are regular
reports of faulty CPS that lead to a no-start condition in jeeps of the
above vintage, but is a symptom of a faulty CPS just poor starting
conditions (my truck always starts, it just takes lots of cranking)?

I there a way to tell by just looking if I have the newer CPS that
supposedly corrects the problem that was apparent with earlier units?

Does anyone know of a kit that supposedly replaces the CPS and the wiring
harness so as to bypass an intermediate connector and connected directly to
the ECU? If so, do you have a link to an online source?

Thanks for any advice.



--

Re: Help with Crank Position Sensor - 89 Jeep Cherokee LTD
 

The plug is usually the issue. I use a good clean with contact cleaner
and then use dielectric grease on the plug seal skirts to keep it good.

You can just cut out the plug and solder and heat shrink the
connection. The newer double walled automotive heat shrink comes with
glue inside to waterproof it.

And even with a new one, my 88 doesn't start any faster. It still seems
like it cranks a long time but starts every time. It is the nature of
the beast. I find a clean on the TPS plug and socket seemed to speed up
starting, well maybe....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

NT wrote:
>
> Hi Guys:
>
> I'm hoping that someone can offer advice on this....
>
> I have a 1989 Jeep Cherokee LTD.
>
> I've often wondered if the CPS is weak. I know that there are regular
> reports of faulty CPS that lead to a no-start condition in jeeps of the
> above vintage, but is a symptom of a faulty CPS just poor starting
> conditions (my truck always starts, it just takes lots of cranking)?
>
> I there a way to tell by just looking if I have the newer CPS that
> supposedly corrects the problem that was apparent with earlier units?
>
> Does anyone know of a kit that supposedly replaces the CPS and the wiring
> harness so as to bypass an intermediate connector and connected directly to
> the ECU? If so, do you have a link to an online source?
>
> Thanks for any advice.
>
> --
>

Re: Help with Crank Position Sensor - 89 Jeep Cherokee LTD
 

The plug is usually the issue. I use a good clean with contact cleaner
and then use dielectric grease on the plug seal skirts to keep it good.

You can just cut out the plug and solder and heat shrink the
connection. The newer double walled automotive heat shrink comes with
glue inside to waterproof it.

And even with a new one, my 88 doesn't start any faster. It still seems
like it cranks a long time but starts every time. It is the nature of
the beast. I find a clean on the TPS plug and socket seemed to speed up
starting, well maybe....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

NT wrote:
>
> Hi Guys:
>
> I'm hoping that someone can offer advice on this....
>
> I have a 1989 Jeep Cherokee LTD.
>
> I've often wondered if the CPS is weak. I know that there are regular
> reports of faulty CPS that lead to a no-start condition in jeeps of the
> above vintage, but is a symptom of a faulty CPS just poor starting
> conditions (my truck always starts, it just takes lots of cranking)?
>
> I there a way to tell by just looking if I have the newer CPS that
> supposedly corrects the problem that was apparent with earlier units?
>
> Does anyone know of a kit that supposedly replaces the CPS and the wiring
> harness so as to bypass an intermediate connector and connected directly to
> the ECU? If so, do you have a link to an online source?
>
> Thanks for any advice.
>
> --
>

Re: Help with Crank Position Sensor - 89 Jeep Cherokee LTD
 

The plug is usually the issue. I use a good clean with contact cleaner
and then use dielectric grease on the plug seal skirts to keep it good.

You can just cut out the plug and solder and heat shrink the
connection. The newer double walled automotive heat shrink comes with
glue inside to waterproof it.

And even with a new one, my 88 doesn't start any faster. It still seems
like it cranks a long time but starts every time. It is the nature of
the beast. I find a clean on the TPS plug and socket seemed to speed up
starting, well maybe....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

NT wrote:
>
> Hi Guys:
>
> I'm hoping that someone can offer advice on this....
>
> I have a 1989 Jeep Cherokee LTD.
>
> I've often wondered if the CPS is weak. I know that there are regular
> reports of faulty CPS that lead to a no-start condition in jeeps of the
> above vintage, but is a symptom of a faulty CPS just poor starting
> conditions (my truck always starts, it just takes lots of cranking)?
>
> I there a way to tell by just looking if I have the newer CPS that
> supposedly corrects the problem that was apparent with earlier units?
>
> Does anyone know of a kit that supposedly replaces the CPS and the wiring
> harness so as to bypass an intermediate connector and connected directly to
> the ECU? If so, do you have a link to an online source?
>
> Thanks for any advice.
>
> --
>

Re: Help with Crank Position Sensor - 89 Jeep Cherokee LTD
 

Hi Mike:

Thanks for your note.

Maybe you can help clarify.....

On some posts, there has been reference to the connector being above the
brake booster - on my 89 - I don't have any connectors in that area. I
can't see where the CPS wires are routed, although I can see the sensor with
the harness heading off to the passenger side of the bell housing - then I
loose it. How do I locate the connector in question?

Thanks for your help.

--

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:43307B49.CC4C92D6@sympatico.ca...
> The plug is usually the issue. I use a good clean with contact cleaner
> and then use dielectric grease on the plug seal skirts to keep it good.
>
> You can just cut out the plug and solder and heat shrink the
> connection. The newer double walled automotive heat shrink comes with
> glue inside to waterproof it.
>
> And even with a new one, my 88 doesn't start any faster. It still seems
> like it cranks a long time but starts every time. It is the nature of
> the beast. I find a clean on the TPS plug and socket seemed to speed up
> starting, well maybe....
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> NT wrote:
>>
>> Hi Guys:
>>
>> I'm hoping that someone can offer advice on this....
>>
>> I have a 1989 Jeep Cherokee LTD.
>>
>> I've often wondered if the CPS is weak. I know that there are regular
>> reports of faulty CPS that lead to a no-start condition in jeeps of the
>> above vintage, but is a symptom of a faulty CPS just poor starting
>> conditions (my truck always starts, it just takes lots of cranking)?
>>
>> I there a way to tell by just looking if I have the newer CPS that
>> supposedly corrects the problem that was apparent with earlier units?
>>
>> Does anyone know of a kit that supposedly replaces the CPS and the wiring
>> harness so as to bypass an intermediate connector and connected directly
>> to
>> the ECU? If so, do you have a link to an online source?
>>
>> Thanks for any advice.
>>
>> --
>>

Re: Help with Crank Position Sensor - 89 Jeep Cherokee LTD
 

Hi Mike:

Thanks for your note.

Maybe you can help clarify.....

On some posts, there has been reference to the connector being above the
brake booster - on my 89 - I don't have any connectors in that area. I
can't see where the CPS wires are routed, although I can see the sensor with
the harness heading off to the passenger side of the bell housing - then I
loose it. How do I locate the connector in question?

Thanks for your help.

--

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:43307B49.CC4C92D6@sympatico.ca...
> The plug is usually the issue. I use a good clean with contact cleaner
> and then use dielectric grease on the plug seal skirts to keep it good.
>
> You can just cut out the plug and solder and heat shrink the
> connection. The newer double walled automotive heat shrink comes with
> glue inside to waterproof it.
>
> And even with a new one, my 88 doesn't start any faster. It still seems
> like it cranks a long time but starts every time. It is the nature of
> the beast. I find a clean on the TPS plug and socket seemed to speed up
> starting, well maybe....
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> NT wrote:
>>
>> Hi Guys:
>>
>> I'm hoping that someone can offer advice on this....
>>
>> I have a 1989 Jeep Cherokee LTD.
>>
>> I've often wondered if the CPS is weak. I know that there are regular
>> reports of faulty CPS that lead to a no-start condition in jeeps of the
>> above vintage, but is a symptom of a faulty CPS just poor starting
>> conditions (my truck always starts, it just takes lots of cranking)?
>>
>> I there a way to tell by just looking if I have the newer CPS that
>> supposedly corrects the problem that was apparent with earlier units?
>>
>> Does anyone know of a kit that supposedly replaces the CPS and the wiring
>> harness so as to bypass an intermediate connector and connected directly
>> to
>> the ECU? If so, do you have a link to an online source?
>>
>> Thanks for any advice.
>>
>> --
>>

Re: Help with Crank Position Sensor - 89 Jeep Cherokee LTD
 

Hi Mike:

Thanks for your note.

Maybe you can help clarify.....

On some posts, there has been reference to the connector being above the
brake booster - on my 89 - I don't have any connectors in that area. I
can't see where the CPS wires are routed, although I can see the sensor with
the harness heading off to the passenger side of the bell housing - then I
loose it. How do I locate the connector in question?

Thanks for your help.

--

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:43307B49.CC4C92D6@sympatico.ca...
> The plug is usually the issue. I use a good clean with contact cleaner
> and then use dielectric grease on the plug seal skirts to keep it good.
>
> You can just cut out the plug and solder and heat shrink the
> connection. The newer double walled automotive heat shrink comes with
> glue inside to waterproof it.
>
> And even with a new one, my 88 doesn't start any faster. It still seems
> like it cranks a long time but starts every time. It is the nature of
> the beast. I find a clean on the TPS plug and socket seemed to speed up
> starting, well maybe....
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> NT wrote:
>>
>> Hi Guys:
>>
>> I'm hoping that someone can offer advice on this....
>>
>> I have a 1989 Jeep Cherokee LTD.
>>
>> I've often wondered if the CPS is weak. I know that there are regular
>> reports of faulty CPS that lead to a no-start condition in jeeps of the
>> above vintage, but is a symptom of a faulty CPS just poor starting
>> conditions (my truck always starts, it just takes lots of cranking)?
>>
>> I there a way to tell by just looking if I have the newer CPS that
>> supposedly corrects the problem that was apparent with earlier units?
>>
>> Does anyone know of a kit that supposedly replaces the CPS and the wiring
>> harness so as to bypass an intermediate connector and connected directly
>> to
>> the ECU? If so, do you have a link to an online source?
>>
>> Thanks for any advice.
>>
>> --
>>

Re: Help with Crank Position Sensor - 89 Jeep Cherokee LTD
 

NT did pass the time by typing:
> Hi Guys:
>
> I'm hoping that someone can offer advice on this....
>
> I have a 1989 Jeep Cherokee LTD.
>
> I've often wondered if the CPS is weak. I know that there are regular
> reports of faulty CPS that lead to a no-start condition in jeeps of the
> above vintage, but is a symptom of a faulty CPS just poor starting
> conditions (my truck always starts, it just takes lots of cranking)?

Lots of cranking usually indicated a no/low fuel pressure problem
in fuel injected vepickles.

> I there a way to tell by just looking if I have the newer CPS that
> supposedly corrects the problem that was apparent with earlier units?

Yea.. The number is printed on the CPS tang right next to the bolt that
holds it in.. way up where you of course can't see it. :/
There might be a paper tag somewhere on the harness.

> Does anyone know of a kit that supposedly replaces the CPS and the wiring
> harness so as to bypass an intermediate connector and connected directly to
> the ECU? If so, do you have a link to an online source?

There are kits to move the CPS up front to the harmonic balancer, but no
bypass kits that I'm aware of.

Dunno if this helps, but for the ZJ.
http://members.cox.net/wilsond/Fixes...tml#CPSdetails
http://members.cox.net/wilsond/cps/

--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: Help with Crank Position Sensor - 89 Jeep Cherokee LTD
 

NT did pass the time by typing:
> Hi Guys:
>
> I'm hoping that someone can offer advice on this....
>
> I have a 1989 Jeep Cherokee LTD.
>
> I've often wondered if the CPS is weak. I know that there are regular
> reports of faulty CPS that lead to a no-start condition in jeeps of the
> above vintage, but is a symptom of a faulty CPS just poor starting
> conditions (my truck always starts, it just takes lots of cranking)?

Lots of cranking usually indicated a no/low fuel pressure problem
in fuel injected vepickles.

> I there a way to tell by just looking if I have the newer CPS that
> supposedly corrects the problem that was apparent with earlier units?

Yea.. The number is printed on the CPS tang right next to the bolt that
holds it in.. way up where you of course can't see it. :/
There might be a paper tag somewhere on the harness.

> Does anyone know of a kit that supposedly replaces the CPS and the wiring
> harness so as to bypass an intermediate connector and connected directly to
> the ECU? If so, do you have a link to an online source?

There are kits to move the CPS up front to the harmonic balancer, but no
bypass kits that I'm aware of.

Dunno if this helps, but for the ZJ.
http://members.cox.net/wilsond/Fixes...tml#CPSdetails
http://members.cox.net/wilsond/cps/

--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: Help with Crank Position Sensor - 89 Jeep Cherokee LTD
 

NT did pass the time by typing:
> Hi Guys:
>
> I'm hoping that someone can offer advice on this....
>
> I have a 1989 Jeep Cherokee LTD.
>
> I've often wondered if the CPS is weak. I know that there are regular
> reports of faulty CPS that lead to a no-start condition in jeeps of the
> above vintage, but is a symptom of a faulty CPS just poor starting
> conditions (my truck always starts, it just takes lots of cranking)?

Lots of cranking usually indicated a no/low fuel pressure problem
in fuel injected vepickles.

> I there a way to tell by just looking if I have the newer CPS that
> supposedly corrects the problem that was apparent with earlier units?

Yea.. The number is printed on the CPS tang right next to the bolt that
holds it in.. way up where you of course can't see it. :/
There might be a paper tag somewhere on the harness.

> Does anyone know of a kit that supposedly replaces the CPS and the wiring
> harness so as to bypass an intermediate connector and connected directly to
> the ECU? If so, do you have a link to an online source?

There are kits to move the CPS up front to the harmonic balancer, but no
bypass kits that I'm aware of.

Dunno if this helps, but for the ZJ.
http://members.cox.net/wilsond/Fixes...tml#CPSdetails
http://members.cox.net/wilsond/cps/

--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!