Does a 97 JGC have a TCU?
 

Transmission controll unit?
I got desperate and took my Jeep to the dealer.
It is running bad, pulling the #1 injector wire does not
even affect idle, #4 can be felt to make a small differance, but
not as much as the other 4. After 5 bill hours, the report is not good.
the modules are not communicating with each other(obdII,BCM,ECM,TCM)
and the dealer is at the start of the "lets replace" phase. Or it could be a broken
wire and "take many hours to trouble shoot".

My point of view...
Ran great, parked, wife drives 40 miles, gets gas, parks it back where I left it.
I get in next morning, runs bad, from first fire on I could tell something is not
correct. Tried it for a day or 2,some drygas,some injector bandaid, and it sputtered home, parked
and next day, it fired up and ran smooth,(after the injector cleaner)for a while, I ran the tank out, and looked
at pulling the fuel rail, the wires and clips seem in good shape, but I chicken'd out.
off to the dealer it went, and 2 days later??? I have doubts.
i know this is not a lot of information, any help or comments?

Frank


--

Woodsy,
Off the Grid, Off the Road, Off my Rocker...

Re: Does a 97 JGC have a TCU?
 

Yes:
http://www.transonline.com/transdige...ers/index.html
But the trouble you describe is the Crankshaft Position Sensor, causing
the computer to default to the save mode:
http://www.off-road.com/jeep/cheroke...tdcsensor.html
Fore which your Stealership will milk for all it can get. About two
grand for my Brother's lesson.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Woodsy wrote:
>
> Transmission controll unit?
> I got desperate and took my Jeep to the dealer.
> It is running bad, pulling the #1 injector wire does not
> even affect idle, #4 can be felt to make a small differance, but
> not as much as the other 4. After 5 bill hours, the report is not good.
> the modules are not communicating with each other(obdII,BCM,ECM,TCM)
> and the dealer is at the start of the "lets replace" phase. Or it could be a broken
> wire and "take many hours to trouble shoot".
>
> My point of view...
> Ran great, parked, wife drives 40 miles, gets gas, parks it back where I left it.
> I get in next morning, runs bad, from first fire on I could tell something is not
> correct. Tried it for a day or 2,some drygas,some injector bandaid, and it sputtered home, parked
> and next day, it fired up and ran smooth,(after the injector cleaner)for a while, I ran the tank out, and looked
> at pulling the fuel rail, the wires and clips seem in good shape, but I chicken'd out.
> off to the dealer it went, and 2 days later??? I have doubts.
> i know this is not a lot of information, any help or comments?
>
> Frank
>
> --
>
> Woodsy,
> Off the Grid, Off the Road, Off my Rocker...

Re: Does a 97 JGC have a TCU?
 

Yes:
http://www.transonline.com/transdige...ers/index.html
But the trouble you describe is the Crankshaft Position Sensor, causing
the computer to default to the save mode:
http://www.off-road.com/jeep/cheroke...tdcsensor.html
Fore which your Stealership will milk for all it can get. About two
grand for my Brother's lesson.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Woodsy wrote:
>
> Transmission controll unit?
> I got desperate and took my Jeep to the dealer.
> It is running bad, pulling the #1 injector wire does not
> even affect idle, #4 can be felt to make a small differance, but
> not as much as the other 4. After 5 bill hours, the report is not good.
> the modules are not communicating with each other(obdII,BCM,ECM,TCM)
> and the dealer is at the start of the "lets replace" phase. Or it could be a broken
> wire and "take many hours to trouble shoot".
>
> My point of view...
> Ran great, parked, wife drives 40 miles, gets gas, parks it back where I left it.
> I get in next morning, runs bad, from first fire on I could tell something is not
> correct. Tried it for a day or 2,some drygas,some injector bandaid, and it sputtered home, parked
> and next day, it fired up and ran smooth,(after the injector cleaner)for a while, I ran the tank out, and looked
> at pulling the fuel rail, the wires and clips seem in good shape, but I chicken'd out.
> off to the dealer it went, and 2 days later??? I have doubts.
> i know this is not a lot of information, any help or comments?
>
> Frank
>
> --
>
> Woodsy,
> Off the Grid, Off the Road, Off my Rocker...

Re: Does a 97 JGC have a TCU?
 

Yes:
http://www.transonline.com/transdige...ers/index.html
But the trouble you describe is the Crankshaft Position Sensor, causing
the computer to default to the save mode:
http://www.off-road.com/jeep/cheroke...tdcsensor.html
Fore which your Stealership will milk for all it can get. About two
grand for my Brother's lesson.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Woodsy wrote:
>
> Transmission controll unit?
> I got desperate and took my Jeep to the dealer.
> It is running bad, pulling the #1 injector wire does not
> even affect idle, #4 can be felt to make a small differance, but
> not as much as the other 4. After 5 bill hours, the report is not good.
> the modules are not communicating with each other(obdII,BCM,ECM,TCM)
> and the dealer is at the start of the "lets replace" phase. Or it could be a broken
> wire and "take many hours to trouble shoot".
>
> My point of view...
> Ran great, parked, wife drives 40 miles, gets gas, parks it back where I left it.
> I get in next morning, runs bad, from first fire on I could tell something is not
> correct. Tried it for a day or 2,some drygas,some injector bandaid, and it sputtered home, parked
> and next day, it fired up and ran smooth,(after the injector cleaner)for a while, I ran the tank out, and looked
> at pulling the fuel rail, the wires and clips seem in good shape, but I chicken'd out.
> off to the dealer it went, and 2 days later??? I have doubts.
> i know this is not a lot of information, any help or comments?
>
> Frank
>
> --
>
> Woodsy,
> Off the Grid, Off the Road, Off my Rocker...

Re: Does a 97 JGC have a TCU?
 

Woodsy did pass the time by typing:
> Transmission controll unit?

Yep

> I got desperate and took my Jeep to the dealer.
> It is running bad, pulling the #1 injector wire does not
> even affect idle, #4 can be felt to make a small differance, but
> not as much as the other 4.

Bad #1 injector possible or bad ground. An engine analyzer hooked to
the injectors will tell for certain. Find a better shop that can do
an injector leak-down test ($65 or so). That will tell you for certain
if those injectors are stuck. You could also get them to run a motorvac
on it. http://www.motorvac.com/ (expect that to cost about $120) the
motorvac runs high strength cleaner through the rail and cleans the whole
system (runs for about 20-30 min).

> After 5 bill hours, the report is not good.

I would tend to believe the dealership mechanic your dealing with is a moron.

> the modules are not communicating with each other(obdII,BCM,ECM,TCM)
> and the dealer is at the start of the "lets replace" phase. Or it could be a
> broken
> wire and "take many hours to trouble shoot".

And we all know replacing $bigbuck parts are cheaper than tracking wires
even if the wire remains broken. ;)

Went through this once with a "new" mechanic. Went all over the ABS system
and couldn't find the fault. Till the greybeard came by and muttered that we
should clean the connector and stop f--king around and taking up garage space. :)
I couldn't get angry since I was out there trying to figure it out myself even
though the obvious was glaring right into my face.

> My point of view...
> Ran great, parked, wife drives 40 miles, gets gas, parks it back where I left
> it.
> I get in next morning, runs bad, from first fire on I could tell something is
> not
> correct. Tried it for a day or 2,some drygas,some injector bandaid, and it
> sputtered home, parked
> and next day, it fired up and ran smooth,(after the injector cleaner)for a
> while, I ran the tank out, and looked at pulling the fuel rail, the wires and
> clips seem in good shape, but I chicken'd out.
> off to the dealer it went, and 2 days later??? I have doubts.
> i know this is not a lot of information, any help or comments?

You got a tank of crapoline that might have clogged your filter and plugged the
injector. Have you poured out any gas into a container?

If it is crapoline you should contact the gas station. Some times they will
pay the damages. (A local Sinclair paid for a friends BMW after he let the
tanks get so low they sucked muck) ..long story, happy ending..


--
-- 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: Does a 97 JGC have a TCU?
 

Woodsy did pass the time by typing:
> Transmission controll unit?

Yep

> I got desperate and took my Jeep to the dealer.
> It is running bad, pulling the #1 injector wire does not
> even affect idle, #4 can be felt to make a small differance, but
> not as much as the other 4.

Bad #1 injector possible or bad ground. An engine analyzer hooked to
the injectors will tell for certain. Find a better shop that can do
an injector leak-down test ($65 or so). That will tell you for certain
if those injectors are stuck. You could also get them to run a motorvac
on it. http://www.motorvac.com/ (expect that to cost about $120) the
motorvac runs high strength cleaner through the rail and cleans the whole
system (runs for about 20-30 min).

> After 5 bill hours, the report is not good.

I would tend to believe the dealership mechanic your dealing with is a moron.

> the modules are not communicating with each other(obdII,BCM,ECM,TCM)
> and the dealer is at the start of the "lets replace" phase. Or it could be a
> broken
> wire and "take many hours to trouble shoot".

And we all know replacing $bigbuck parts are cheaper than tracking wires
even if the wire remains broken. ;)

Went through this once with a "new" mechanic. Went all over the ABS system
and couldn't find the fault. Till the greybeard came by and muttered that we
should clean the connector and stop f--king around and taking up garage space. :)
I couldn't get angry since I was out there trying to figure it out myself even
though the obvious was glaring right into my face.

> My point of view...
> Ran great, parked, wife drives 40 miles, gets gas, parks it back where I left
> it.
> I get in next morning, runs bad, from first fire on I could tell something is
> not
> correct. Tried it for a day or 2,some drygas,some injector bandaid, and it
> sputtered home, parked
> and next day, it fired up and ran smooth,(after the injector cleaner)for a
> while, I ran the tank out, and looked at pulling the fuel rail, the wires and
> clips seem in good shape, but I chicken'd out.
> off to the dealer it went, and 2 days later??? I have doubts.
> i know this is not a lot of information, any help or comments?

You got a tank of crapoline that might have clogged your filter and plugged the
injector. Have you poured out any gas into a container?

If it is crapoline you should contact the gas station. Some times they will
pay the damages. (A local Sinclair paid for a friends BMW after he let the
tanks get so low they sucked muck) ..long story, happy ending..


--
-- 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: Does a 97 JGC have a TCU?
 

Woodsy did pass the time by typing:
> Transmission controll unit?

Yep

> I got desperate and took my Jeep to the dealer.
> It is running bad, pulling the #1 injector wire does not
> even affect idle, #4 can be felt to make a small differance, but
> not as much as the other 4.

Bad #1 injector possible or bad ground. An engine analyzer hooked to
the injectors will tell for certain. Find a better shop that can do
an injector leak-down test ($65 or so). That will tell you for certain
if those injectors are stuck. You could also get them to run a motorvac
on it. http://www.motorvac.com/ (expect that to cost about $120) the
motorvac runs high strength cleaner through the rail and cleans the whole
system (runs for about 20-30 min).

> After 5 bill hours, the report is not good.

I would tend to believe the dealership mechanic your dealing with is a moron.

> the modules are not communicating with each other(obdII,BCM,ECM,TCM)
> and the dealer is at the start of the "lets replace" phase. Or it could be a
> broken
> wire and "take many hours to trouble shoot".

And we all know replacing $bigbuck parts are cheaper than tracking wires
even if the wire remains broken. ;)

Went through this once with a "new" mechanic. Went all over the ABS system
and couldn't find the fault. Till the greybeard came by and muttered that we
should clean the connector and stop f--king around and taking up garage space. :)
I couldn't get angry since I was out there trying to figure it out myself even
though the obvious was glaring right into my face.

> My point of view...
> Ran great, parked, wife drives 40 miles, gets gas, parks it back where I left
> it.
> I get in next morning, runs bad, from first fire on I could tell something is
> not
> correct. Tried it for a day or 2,some drygas,some injector bandaid, and it
> sputtered home, parked
> and next day, it fired up and ran smooth,(after the injector cleaner)for a
> while, I ran the tank out, and looked at pulling the fuel rail, the wires and
> clips seem in good shape, but I chicken'd out.
> off to the dealer it went, and 2 days later??? I have doubts.
> i know this is not a lot of information, any help or comments?

You got a tank of crapoline that might have clogged your filter and plugged the
injector. Have you poured out any gas into a container?

If it is crapoline you should contact the gas station. Some times they will
pay the damages. (A local Sinclair paid for a friends BMW after he let the
tanks get so low they sucked muck) ..long story, happy ending..


--
-- 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: Does a 97 JGC have a TCU?
 

On Tue, 23 Nov 2004 16:08:58 -0800, L.W.(ßill) ------ III <----------@cox.net> wrote:

> Yes:
>http://www.transonline.com/transdige...ers/index.html
>But the trouble you describe is the Crankshaft Position Sensor, causing
>the computer to default to the save mode:
>http://www.off-road.com/jeep/cheroke...tdcsensor.html
>Fore which your Stealership will milk for all it can get. About two
>grand for my Brother's lesson.
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Woodsy wrote:
>>
>> Transmission controll unit?
>> I got desperate and took my Jeep to the dealer.
>> It is running bad, pulling the #1 injector wire does not
>> even affect idle, #4 can be felt to make a small differance, but
>> not as much as the other 4. After 5 bill hours, the report is not good.
>> the modules are not communicating with each other(obdII,BCM,ECM,TCM)
>> and the dealer is at the start of the "lets replace" phase. Or it could be a broken
>> wire and "take many hours to trouble shoot".
>>
>> My point of view...
>> Ran great, parked, wife drives 40 miles, gets gas, parks it back where I left it.
>> I get in next morning, runs bad, from first fire on I could tell something is not
>> correct. Tried it for a day or 2,some drygas,some injector bandaid, and it sputtered home, parked
>> and next day, it fired up and ran smooth,(after the injector cleaner)for a while, I ran the tank out, and looked
>> at pulling the fuel rail, the wires and clips seem in good shape, but I chicken'd out.
>> off to the dealer it went, and 2 days later??? I have doubts.
>> i know this is not a lot of information, any help or comments?
>>
>> Frank
>>
>> --
>>
>> Woodsy,
>> Off the Grid, Off the Road, Off my Rocker...


Thank you, Bill.
This short reply will be followed up, later today.
Off to the dealer.

--

Woodsy,
Off the Grid, Off the Road, Off my Rocker...

Re: Does a 97 JGC have a TCU?
 

On Tue, 23 Nov 2004 16:08:58 -0800, L.W.(ßill) ------ III <----------@cox.net> wrote:

> Yes:
>http://www.transonline.com/transdige...ers/index.html
>But the trouble you describe is the Crankshaft Position Sensor, causing
>the computer to default to the save mode:
>http://www.off-road.com/jeep/cheroke...tdcsensor.html
>Fore which your Stealership will milk for all it can get. About two
>grand for my Brother's lesson.
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Woodsy wrote:
>>
>> Transmission controll unit?
>> I got desperate and took my Jeep to the dealer.
>> It is running bad, pulling the #1 injector wire does not
>> even affect idle, #4 can be felt to make a small differance, but
>> not as much as the other 4. After 5 bill hours, the report is not good.
>> the modules are not communicating with each other(obdII,BCM,ECM,TCM)
>> and the dealer is at the start of the "lets replace" phase. Or it could be a broken
>> wire and "take many hours to trouble shoot".
>>
>> My point of view...
>> Ran great, parked, wife drives 40 miles, gets gas, parks it back where I left it.
>> I get in next morning, runs bad, from first fire on I could tell something is not
>> correct. Tried it for a day or 2,some drygas,some injector bandaid, and it sputtered home, parked
>> and next day, it fired up and ran smooth,(after the injector cleaner)for a while, I ran the tank out, and looked
>> at pulling the fuel rail, the wires and clips seem in good shape, but I chicken'd out.
>> off to the dealer it went, and 2 days later??? I have doubts.
>> i know this is not a lot of information, any help or comments?
>>
>> Frank
>>
>> --
>>
>> Woodsy,
>> Off the Grid, Off the Road, Off my Rocker...


Thank you, Bill.
This short reply will be followed up, later today.
Off to the dealer.

--

Woodsy,
Off the Grid, Off the Road, Off my Rocker...

Re: Does a 97 JGC have a TCU?
 

On Tue, 23 Nov 2004 16:08:58 -0800, L.W.(ßill) ------ III <----------@cox.net> wrote:

> Yes:
>http://www.transonline.com/transdige...ers/index.html
>But the trouble you describe is the Crankshaft Position Sensor, causing
>the computer to default to the save mode:
>http://www.off-road.com/jeep/cheroke...tdcsensor.html
>Fore which your Stealership will milk for all it can get. About two
>grand for my Brother's lesson.
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Woodsy wrote:
>>
>> Transmission controll unit?
>> I got desperate and took my Jeep to the dealer.
>> It is running bad, pulling the #1 injector wire does not
>> even affect idle, #4 can be felt to make a small differance, but
>> not as much as the other 4. After 5 bill hours, the report is not good.
>> the modules are not communicating with each other(obdII,BCM,ECM,TCM)
>> and the dealer is at the start of the "lets replace" phase. Or it could be a broken
>> wire and "take many hours to trouble shoot".
>>
>> My point of view...
>> Ran great, parked, wife drives 40 miles, gets gas, parks it back where I left it.
>> I get in next morning, runs bad, from first fire on I could tell something is not
>> correct. Tried it for a day or 2,some drygas,some injector bandaid, and it sputtered home, parked
>> and next day, it fired up and ran smooth,(after the injector cleaner)for a while, I ran the tank out, and looked
>> at pulling the fuel rail, the wires and clips seem in good shape, but I chicken'd out.
>> off to the dealer it went, and 2 days later??? I have doubts.
>> i know this is not a lot of information, any help or comments?
>>
>> Frank
>>
>> --
>>
>> Woodsy,
>> Off the Grid, Off the Road, Off my Rocker...


Thank you, Bill.
This short reply will be followed up, later today.
Off to the dealer.

--

Woodsy,
Off the Grid, Off the Road, Off my Rocker...