'93 XJ No spark(Still)
 

Ok, now the stupid truck has a new crank sensor, and a new cam
sensor...and still no spark.

Has power to the coil when cranking, but no ground signal to make coil
fire. Swapped coil into the YJ, just to make sure it's good.

read the trouble codes: 12, 11, 76, and 55

Ok, 11 is a no crank signal code.
12 is the battery disconnect code(makes sense, I just changed
out the battery a couple of weeks ago)
55 is the "end of codes" code

WTF is a 76? Can't find it in any of the on-lind code lists.

guess I'll hit the shop foreman at the Dodge dealer up and see if I
can borrow the service manual for a couple of days.
--
Old Crow
'82 Shovelhead FLT 92" 'Pearl'
'95 Jeep YJ
ASE Certified Master Auto Tech + L1
TOMKAT, BS#133, SENS, MAMBM

Re: '93 XJ No spark(Still)
 

Those codes should come out in numerical order, you might check them again.
One other thing you might check: On those motors there is a sensor in the
distributor to tell the fuel injection system when to fire which injector
(which is coupled with the crank position sensor for other timing issues).
I had to find a Jeep technical bulletin which essential said to cut off one
ear on the distributor and turn it slightly. The timing comes from the crank
sensor for this so it won't advance or retard the timing like it used to on
older engines. I can't find the link to the note, but you could do a search
for it. It's a very easy fix if this is it. This problem is most common
after a camshaft change, but it could happen on stock engines based on what
the technical note said.
Later,
Troy


"Old Crow" <walliscrow@hotmail.com> wrote in message
news:3f4432c6.10031604@News.CIS.DFN.DE...
> Ok, now the stupid truck has a new crank sensor, and a new cam
> sensor...and still no spark.
>

Re: '93 XJ No spark(Still)
 

Those codes should come out in numerical order, you might check them again.
One other thing you might check: On those motors there is a sensor in the
distributor to tell the fuel injection system when to fire which injector
(which is coupled with the crank position sensor for other timing issues).
I had to find a Jeep technical bulletin which essential said to cut off one
ear on the distributor and turn it slightly. The timing comes from the crank
sensor for this so it won't advance or retard the timing like it used to on
older engines. I can't find the link to the note, but you could do a search
for it. It's a very easy fix if this is it. This problem is most common
after a camshaft change, but it could happen on stock engines based on what
the technical note said.
Later,
Troy


"Old Crow" <walliscrow@hotmail.com> wrote in message
news:3f4432c6.10031604@News.CIS.DFN.DE...
> Ok, now the stupid truck has a new crank sensor, and a new cam
> sensor...and still no spark.
>

Re: '93 XJ No spark(Still)
 

On Thu, 21 Aug 2003 00:06:01 -0700, "Jeep Guy"
<jeep_guyNOSPAM@charter.net> wrote:

>Those codes should come out in numerical order, you might check them again.
>One other thing you might check: On those motors there is a sensor in the
>distributor to tell the fuel injection system when to fire which injector
>(which is coupled with the crank position sensor for other timing issues).
>I had to find a Jeep technical bulletin which essential said to cut off one
>ear on the distributor and turn it slightly. The timing comes from the crank
>sensor for this so it won't advance or retard the timing like it used to on
>older engines. I can't find the link to the note, but you could do a search
>for it. It's a very easy fix if this is it. This problem is most common
>after a camshaft change, but it could happen on stock engines based on what
>the technical note said.
>Later,
>Troy

Yup, the Hall effect switch in the dist is the first one that got
changed...then I changed the crank sensor. $100+ spent on parts and
still no spark. All fuses good(checked them a 3rd time last night),
coil tested and verified to work, cap and rotor fairly new, fuel pump
runs...just no damned spark.
Can't find an ignition module...I guess it's internal to the computer?


--
Old Crow
'82 Shovelhead FLT 92" 'Pearl'
'95 Jeep YJ
ASE Certified Master Auto Tech + L1
TOMKAT, BS#133, SENS, MAMBM

Re: '93 XJ No spark(Still)
 

On Thu, 21 Aug 2003 00:06:01 -0700, "Jeep Guy"
<jeep_guyNOSPAM@charter.net> wrote:

>Those codes should come out in numerical order, you might check them again.
>One other thing you might check: On those motors there is a sensor in the
>distributor to tell the fuel injection system when to fire which injector
>(which is coupled with the crank position sensor for other timing issues).
>I had to find a Jeep technical bulletin which essential said to cut off one
>ear on the distributor and turn it slightly. The timing comes from the crank
>sensor for this so it won't advance or retard the timing like it used to on
>older engines. I can't find the link to the note, but you could do a search
>for it. It's a very easy fix if this is it. This problem is most common
>after a camshaft change, but it could happen on stock engines based on what
>the technical note said.
>Later,
>Troy

Yup, the Hall effect switch in the dist is the first one that got
changed...then I changed the crank sensor. $100+ spent on parts and
still no spark. All fuses good(checked them a 3rd time last night),
coil tested and verified to work, cap and rotor fairly new, fuel pump
runs...just no damned spark.
Can't find an ignition module...I guess it's internal to the computer?


--
Old Crow
'82 Shovelhead FLT 92" 'Pearl'
'95 Jeep YJ
ASE Certified Master Auto Tech + L1
TOMKAT, BS#133, SENS, MAMBM

Re: '93 XJ No spark(Still)
 

Have you tested the HT Lead from Distributor to Coil ?

Dave Milne, Scotland
'99 TJ Sahara


On Thu, 21 Aug 2003 09:38:08 GMT, walliscrow@hotmail.com (Old Crow)
wrote:

>On Thu, 21 Aug 2003 00:06:01 -0700, "Jeep Guy"
><jeep_guyNOSPAM@charter.net> wrote:
>
>>Those codes should come out in numerical order, you might check them again.
>>One other thing you might check: On those motors there is a sensor in the
>>distributor to tell the fuel injection system when to fire which injector
>>(which is coupled with the crank position sensor for other timing issues).
>>I had to find a Jeep technical bulletin which essential said to cut off one
>>ear on the distributor and turn it slightly. The timing comes from the crank
>>sensor for this so it won't advance or retard the timing like it used to on
>>older engines. I can't find the link to the note, but you could do a search
>>for it. It's a very easy fix if this is it. This problem is most common
>>after a camshaft change, but it could happen on stock engines based on what
>>the technical note said.
>>Later,
>>Troy
>
>Yup, the Hall effect switch in the dist is the first one that got
>changed...then I changed the crank sensor. $100+ spent on parts and
>still no spark. All fuses good(checked them a 3rd time last night),
>coil tested and verified to work, cap and rotor fairly new, fuel pump
>runs...just no damned spark.
>Can't find an ignition module...I guess it's internal to the computer?

Dave Milne, Scotland
'99 TJ Sahara

Re: '93 XJ No spark(Still)
 

Have you tested the HT Lead from Distributor to Coil ?

Dave Milne, Scotland
'99 TJ Sahara


On Thu, 21 Aug 2003 09:38:08 GMT, walliscrow@hotmail.com (Old Crow)
wrote:

>On Thu, 21 Aug 2003 00:06:01 -0700, "Jeep Guy"
><jeep_guyNOSPAM@charter.net> wrote:
>
>>Those codes should come out in numerical order, you might check them again.
>>One other thing you might check: On those motors there is a sensor in the
>>distributor to tell the fuel injection system when to fire which injector
>>(which is coupled with the crank position sensor for other timing issues).
>>I had to find a Jeep technical bulletin which essential said to cut off one
>>ear on the distributor and turn it slightly. The timing comes from the crank
>>sensor for this so it won't advance or retard the timing like it used to on
>>older engines. I can't find the link to the note, but you could do a search
>>for it. It's a very easy fix if this is it. This problem is most common
>>after a camshaft change, but it could happen on stock engines based on what
>>the technical note said.
>>Later,
>>Troy
>
>Yup, the Hall effect switch in the dist is the first one that got
>changed...then I changed the crank sensor. $100+ spent on parts and
>still no spark. All fuses good(checked them a 3rd time last night),
>coil tested and verified to work, cap and rotor fairly new, fuel pump
>runs...just no damned spark.
>Can't find an ignition module...I guess it's internal to the computer?

Dave Milne, Scotland
'99 TJ Sahara

Re: '93 XJ No spark(Still)
 

I would run a booster cable from the battery negative to the firewall
and see if I got spark. A corroded ground can cause that. There is a
sneaky mesh one from the back of the head to the firewall that likes to
rot away.

I thought my CPS was going from the stalls and final up and quit, but it
was that mesh cable.

You also might have a ceramic ballast resistor on the driver's side
fender or on the firewall somewhere. If this gets a bad connection, it
can interfere with the spark. It can be disconnected and the two wires
hooked together to test it and run it for a while even. The ballast
resistor just lowers the voltage to the fuel pump, but if not working
some sensor triggers and you get no spark.

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

Old Crow wrote:
>
> Ok, now the stupid truck has a new crank sensor, and a new cam
> sensor...and still no spark.
>
> Has power to the coil when cranking, but no ground signal to make coil
> fire. Swapped coil into the YJ, just to make sure it's good.
>
> read the trouble codes: 12, 11, 76, and 55
>
> Ok, 11 is a no crank signal code.
> 12 is the battery disconnect code(makes sense, I just changed
> out the battery a couple of weeks ago)
> 55 is the "end of codes" code
>
> WTF is a 76? Can't find it in any of the on-lind code lists.
>
> guess I'll hit the shop foreman at the Dodge dealer up and see if I
> can borrow the service manual for a couple of days.
> --
> Old Crow
> '82 Shovelhead FLT 92" 'Pearl'
> '95 Jeep YJ
> ASE Certified Master Auto Tech + L1
> TOMKAT, BS#133, SENS, MAMBM

Re: '93 XJ No spark(Still)
 

I would run a booster cable from the battery negative to the firewall
and see if I got spark. A corroded ground can cause that. There is a
sneaky mesh one from the back of the head to the firewall that likes to
rot away.

I thought my CPS was going from the stalls and final up and quit, but it
was that mesh cable.

You also might have a ceramic ballast resistor on the driver's side
fender or on the firewall somewhere. If this gets a bad connection, it
can interfere with the spark. It can be disconnected and the two wires
hooked together to test it and run it for a while even. The ballast
resistor just lowers the voltage to the fuel pump, but if not working
some sensor triggers and you get no spark.

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

Old Crow wrote:
>
> Ok, now the stupid truck has a new crank sensor, and a new cam
> sensor...and still no spark.
>
> Has power to the coil when cranking, but no ground signal to make coil
> fire. Swapped coil into the YJ, just to make sure it's good.
>
> read the trouble codes: 12, 11, 76, and 55
>
> Ok, 11 is a no crank signal code.
> 12 is the battery disconnect code(makes sense, I just changed
> out the battery a couple of weeks ago)
> 55 is the "end of codes" code
>
> WTF is a 76? Can't find it in any of the on-lind code lists.
>
> guess I'll hit the shop foreman at the Dodge dealer up and see if I
> can borrow the service manual for a couple of days.
> --
> Old Crow
> '82 Shovelhead FLT 92" 'Pearl'
> '95 Jeep YJ
> ASE Certified Master Auto Tech + L1
> TOMKAT, BS#133, SENS, MAMBM

Re: '93 XJ No spark(Still)
 

"Old Crow" <walliscrow@hotmail.com> wrote in message
news:3f4432c6.10031604@News.CIS.DFN.DE...
:
: guess I'll hit the shop foreman at the Dodge dealer up and see if I
: can borrow the service manual for a couple of days.
: --
: Old Crow

Violence is not going to get you anywhere, try asking him politely.
-Brian