1998 cherokee no start/no spark
 

i have a 98 cherokee ,standard trans that won't start-cranks but has no spark-
no voltage with a test light
at the crank sensor harness,cam sensor harness,coil harness.i checked all
grounds that i know of
including the ground strap at the back of the head to the firewall-not frayed
at all.checked grounds by
pcm under hood,appear ok,checked grounds by coil.appear ok also.jeep was
starting fine-then i let it sit parked for 2 months-kids got in-left interior
light on-battery went dead-put in a different battery-cranks fine but won't
start-thought maybe some of gods little creatures got in there and chewed
wires-but didn't
see anything .i know i can't just try a different pcm from bone yard because
it has to be programmed
to the vehicle- anyone have any ideas -don't really have the money to take
to JEEP DEALER for
repairs.......oh and yes i did unplug and plug in crank sensor-didn't help.

Re: 1998 cherokee no start/no spark
 

A test light really isn't not much good except for testing power to
lights or a radio. Buy a volt/ohm meter then compare it against Doug's site:
http://members.cox.net/wilsond/Fixes/diagnostics.html My money's on the
Crankshaft Position Sensor.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/


"jtgreek" <u37956@uwe> wrote in message news:79272ac7638aa@uwe...
> i have a 98 cherokee ,standard trans that won't start-cranks but has no
spark-
> no voltage with a test light
> at the crank sensor harness,cam sensor harness,coil harness.i checked all
> grounds that i know of
> including the ground strap at the back of the head to the firewall-not
frayed
> at all.checked grounds by
> pcm under hood,appear ok,checked grounds by coil.appear ok also.jeep was
> starting fine-then i let it sit parked for 2 months-kids got in-left
interior
> light on-battery went dead-put in a different battery-cranks fine but
won't
> start-thought maybe some of gods little creatures got in there and chewed
> wires-but didn't
> see anything .i know i can't just try a different pcm from bone yard
because
> it has to be programmed
> to the vehicle- anyone have any ideas -don't really have the money to
take
> to JEEP DEALER for
> repairs.......oh and yes i did unplug and plug in crank sensor-didn't
help.
>

Re: 1998 cherokee no start/no spark
 

A test light really isn't not much good except for testing power to
lights or a radio. Buy a volt/ohm meter then compare it against Doug's site:
http://members.cox.net/wilsond/Fixes/diagnostics.html My money's on the
Crankshaft Position Sensor.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/


"jtgreek" <u37956@uwe> wrote in message news:79272ac7638aa@uwe...
> i have a 98 cherokee ,standard trans that won't start-cranks but has no
spark-
> no voltage with a test light
> at the crank sensor harness,cam sensor harness,coil harness.i checked all
> grounds that i know of
> including the ground strap at the back of the head to the firewall-not
frayed
> at all.checked grounds by
> pcm under hood,appear ok,checked grounds by coil.appear ok also.jeep was
> starting fine-then i let it sit parked for 2 months-kids got in-left
interior
> light on-battery went dead-put in a different battery-cranks fine but
won't
> start-thought maybe some of gods little creatures got in there and chewed
> wires-but didn't
> see anything .i know i can't just try a different pcm from bone yard
because
> it has to be programmed
> to the vehicle- anyone have any ideas -don't really have the money to
take
> to JEEP DEALER for
> repairs.......oh and yes i did unplug and plug in crank sensor-didn't
help.
>

Re: 1998 cherokee no start/no spark
 

A test light really isn't not much good except for testing power to
lights or a radio. Buy a volt/ohm meter then compare it against Doug's site:
http://members.cox.net/wilsond/Fixes/diagnostics.html My money's on the
Crankshaft Position Sensor.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/


"jtgreek" <u37956@uwe> wrote in message news:79272ac7638aa@uwe...
> i have a 98 cherokee ,standard trans that won't start-cranks but has no
spark-
> no voltage with a test light
> at the crank sensor harness,cam sensor harness,coil harness.i checked all
> grounds that i know of
> including the ground strap at the back of the head to the firewall-not
frayed
> at all.checked grounds by
> pcm under hood,appear ok,checked grounds by coil.appear ok also.jeep was
> starting fine-then i let it sit parked for 2 months-kids got in-left
interior
> light on-battery went dead-put in a different battery-cranks fine but
won't
> start-thought maybe some of gods little creatures got in there and chewed
> wires-but didn't
> see anything .i know i can't just try a different pcm from bone yard
because
> it has to be programmed
> to the vehicle- anyone have any ideas -don't really have the money to
take
> to JEEP DEALER for
> repairs.......oh and yes i did unplug and plug in crank sensor-didn't
help.
>

Re: 1998 cherokee no start/no spark
 

A test light really isn't not much good except for testing power to
lights or a radio. Buy a volt/ohm meter then compare it against Doug's site:
http://members.cox.net/wilsond/Fixes/diagnostics.html My money's on the
Crankshaft Position Sensor.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/


"jtgreek" <u37956@uwe> wrote in message news:79272ac7638aa@uwe...
> i have a 98 cherokee ,standard trans that won't start-cranks but has no
spark-
> no voltage with a test light
> at the crank sensor harness,cam sensor harness,coil harness.i checked all
> grounds that i know of
> including the ground strap at the back of the head to the firewall-not
frayed
> at all.checked grounds by
> pcm under hood,appear ok,checked grounds by coil.appear ok also.jeep was
> starting fine-then i let it sit parked for 2 months-kids got in-left
interior
> light on-battery went dead-put in a different battery-cranks fine but
won't
> start-thought maybe some of gods little creatures got in there and chewed
> wires-but didn't
> see anything .i know i can't just try a different pcm from bone yard
because
> it has to be programmed
> to the vehicle- anyone have any ideas -don't really have the money to
take
> to JEEP DEALER for
> repairs.......oh and yes i did unplug and plug in crank sensor-didn't
help.
>

Re: 1998 cherokee no start/no spark
 

forgot to mention jeep has a 4.0 engine-doesn't have fuel at fuel rail either-
-i did swapped asd relay with known good one.......-thanks for your advise
bill,i will try testing with dvom-i thought that a test light would at least
light up if there was power present at any of the connectors????

L.W. (Bill) ------ III wrote:
>A test light really isn't not much good except for testing power to
>lights or a radio. Buy a volt/ohm meter then compare it against Doug's site:
>http://members.cox.net/wilsond/Fixes/diagnostics.html My money's on the
>Crankshaft Position Sensor.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>> i have a 98 cherokee ,standard trans that won't start-cranks but has no spark-
>> no voltage with a test light
>[quoted text clipped - 12 lines]
>> to JEEP DEALER for
>> repairs.......oh and yes i did unplug and plug in crank sensor-didn't help.

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200710/1

Re: 1998 cherokee no start/no spark
 

forgot to mention jeep has a 4.0 engine-doesn't have fuel at fuel rail either-
-i did swapped asd relay with known good one.......-thanks for your advise
bill,i will try testing with dvom-i thought that a test light would at least
light up if there was power present at any of the connectors????

L.W. (Bill) ------ III wrote:
>A test light really isn't not much good except for testing power to
>lights or a radio. Buy a volt/ohm meter then compare it against Doug's site:
>http://members.cox.net/wilsond/Fixes/diagnostics.html My money's on the
>Crankshaft Position Sensor.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>> i have a 98 cherokee ,standard trans that won't start-cranks but has no spark-
>> no voltage with a test light
>[quoted text clipped - 12 lines]
>> to JEEP DEALER for
>> repairs.......oh and yes i did unplug and plug in crank sensor-didn't help.

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200710/1

Re: 1998 cherokee no start/no spark
 

forgot to mention jeep has a 4.0 engine-doesn't have fuel at fuel rail either-
-i did swapped asd relay with known good one.......-thanks for your advise
bill,i will try testing with dvom-i thought that a test light would at least
light up if there was power present at any of the connectors????

L.W. (Bill) ------ III wrote:
>A test light really isn't not much good except for testing power to
>lights or a radio. Buy a volt/ohm meter then compare it against Doug's site:
>http://members.cox.net/wilsond/Fixes/diagnostics.html My money's on the
>Crankshaft Position Sensor.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>> i have a 98 cherokee ,standard trans that won't start-cranks but has no spark-
>> no voltage with a test light
>[quoted text clipped - 12 lines]
>> to JEEP DEALER for
>> repairs.......oh and yes i did unplug and plug in crank sensor-didn't help.

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200710/1

Re: 1998 cherokee no start/no spark
 

forgot to mention jeep has a 4.0 engine-doesn't have fuel at fuel rail either-
-i did swapped asd relay with known good one.......-thanks for your advise
bill,i will try testing with dvom-i thought that a test light would at least
light up if there was power present at any of the connectors????

L.W. (Bill) ------ III wrote:
>A test light really isn't not much good except for testing power to
>lights or a radio. Buy a volt/ohm meter then compare it against Doug's site:
>http://members.cox.net/wilsond/Fixes/diagnostics.html My money's on the
>Crankshaft Position Sensor.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>> i have a 98 cherokee ,standard trans that won't start-cranks but has no spark-
>> no voltage with a test light
>[quoted text clipped - 12 lines]
>> to JEEP DEALER for
>> repairs.......oh and yes i did unplug and plug in crank sensor-didn't help.

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200710/1

Re: 1998 cherokee no start/no spark
 

does the odometer say BUSS if it does you have a bad crank sensor and if the
injectors are not firing thne you have a bad cranksensor and not a bad pcm
pcm failure in jeeps is rear thing but get replaced because people (techs)don't
know any better

jtgreek wrote:

> i have a 98 cherokee ,standard trans that won't start-cranks but has no spark-
> no voltage with a test light
> at the crank sensor harness,cam sensor harness,coil harness.i checked all
> grounds that i know of
> including the ground strap at the back of the head to the firewall-not frayed
> at all.checked grounds by
> pcm under hood,appear ok,checked grounds by coil.appear ok also.jeep was
> starting fine-then i let it sit parked for 2 months-kids got in-left interior
> light on-battery went dead-put in a different battery-cranks fine but won't
> start-thought maybe some of gods little creatures got in there and chewed
> wires-but didn't
> see anything .i know i can't just try a different pcm from bone yard because
> it has to be programmed
> to the vehicle- anyone have any ideas -don't really have the money to take
> to JEEP DEALER for
> repairs.......oh and yes i did unplug and plug in crank sensor-didn't help.