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Cranks but no start

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Old Jun 16, 2018 | 09:27 PM
  #1  
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Default Cranks but no start

replaced all my cooling parts. Radiator, hoses, water pump, thermostat, rad cap, and flushed it. Let the jeep run for about an hr and then moved it to the street. It stayed on for about 3 minutes and then died. Now it only cranks and doesn’t start. No spark out of the spark plugs, no spark out of the distributor cap and ignition coil. Bought a new ignition coil and still no spark. What could it be guys??
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Old Jun 16, 2018 | 09:48 PM
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Crankshaft position sensor or camshaft position sensor would be my guess.
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Old Jun 17, 2018 | 12:26 PM
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Originally Posted by Jimbo Slice
Crankshaft position sensor or camshaft position sensor would be my guess.
it was the cps. Just got done changing it. Thanks!
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Old Jun 17, 2018 | 03:20 PM
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did you replace with an oem one
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Old Jun 18, 2018 | 01:42 AM
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Originally Posted by matt523
did you replace with an oem one
got it from Napa auto parts. Why?
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Old Jun 18, 2018 | 08:55 AM
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i have a 95 cherokee i replaced the head put everything back together and replaced the cps because i broke the other now it wont start but cranks i read some were that aftermarket cps are a hit or miss but mine still wont start

Last edited by matt523; Jun 18, 2018 at 09:34 AM.
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Old Jun 18, 2018 | 02:23 PM
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Originally Posted by matt523
i have a 95 cherokee i replaced the head put everything back together and replaced the cps because i broke the other now it wont start but cranks i read some were that aftermarket cps are a hit or miss but mine still wont start
well I got lucky with the cps I bought from Napa then. Starts up every time
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Old Jun 18, 2018 | 07:03 PM
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Originally Posted by matt523
i have a 95 cherokee i replaced the head put everything back together and replaced the cps because i broke the other now it wont start but cranks i read some were that aftermarket cps are a hit or miss but mine still wont start

  1. Use punctuation. You aren't texting with your buddies.
  2. Start your own thread.
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Old Jun 18, 2018 | 09:23 PM
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Originally Posted by BlueRidgeMark
  1. Use punctuation. You aren't texting with your buddies.
  2. Start your own thread.
i understood everything he said. Pretty sure you did too. No need to be a grammar police. Help him out instead
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Old Jun 18, 2018 | 09:25 PM
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Originally Posted by matt523
i have a 95 cherokee i replaced the head put everything back together and replaced the cps because i broke the other now it wont start but cranks i read some were that aftermarket cps are a hit or miss but mine still wont start
maybe try a oem one from Mopar? Are you getting spark in your spark plugs, dizzy, and coil pack?
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Old Jun 18, 2018 | 11:09 PM
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Originally Posted by Russell707


maybe try a oem one from Mopar? Are you getting spark in your spark plugs, dizzy, and coil pack?
A 95 does not use a coil pack. It uses an ignition coil. I stopped calling the distributor a "dizzy" years ago. Seen it called that so often on the Ford forums i thought everyone fell asleep with all them z's lol.

With that aside, checking for spark is a good idea, as is checking fuses. As for the crank sensor, Mopar is at the top of the list. Or atleast it should be. Aftermarket is hit or miss. From what ive read, its the magnets.
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Old Jun 19, 2018 | 07:35 AM
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Originally Posted by Russell707


i understood everything he said. Pretty sure you did too. No need to be a grammar police. Help him out instead
I didn't understand it because I didn't read it. When I see a word salad like that I don't bother. If someone is too lazy to even use basic punctuation I am not going to take my time and and effort to help him.

I have seen more than one forum turned into a chaotic mess, useful to nobody, exactly because of his and your attitude. No rules except one - nobody should ever be corrected. Except, of course, anyone who would dare correct lazy and inconsiderate people like him.

No thanks. I'll save my time for people who are willing to show basic courtesy to those who are being asked for FREE HELP.
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Old Jun 19, 2018 | 09:43 AM
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Default No start also

Originally Posted by matt523
i have a 95 cherokee i replaced the head put everything back together and replaced the cps because i broke the other now it wont start but cranks i read some were that aftermarket cps are a hit or miss but mine still wont start


Mine 1991 larado 4.0
No fuel pressure/new fuel pump
Drove all day ok next day died in alley
Was able to limp it/with gas/no fuel pressure
again/ changed fuel pump again/filter
AS relay new/fuel pump relay also
Swapped ecm with known good one/
3- capacitors-thing
(Ok chuckle
Pulled the even/ cracked silicone/dug out
Radio shack had the 3/ mine 2-small 1-taller
25.00-later.
Popped tall capacitor!
thus ecm from wrecking yard / motor has hole in block
Pulled pdb loose looking for shorts nothing
all looks very good
Oxygen sensor taken out/inspected tested
Ok/ only 1 oxygen sensor
Ckp looks ok
cam sensor. Also looks ok
checking grounds and for corrosion
30 amp keeps blowing
can a bad ckp do this?
Wiring in loom in harness in place secured
All looks good
1 owner jeep me 2nd
Last shop replaced ballast resistor on firewall to get running
Pulled dash/ all bulbs good/replaced several
Couple small ones missing -got
Have pulled all fuses all good
30 amp- ?
did find a dead mouse by battery tray
Cleaned out inpeccted -no signs bad
Look if at schematics
My eye sight sucks so small
Ready to pull starter
Works great but
No fuel pressure
Pump never turns on
DROPPED phone broke it
Been spending hours reading
About this same problem
But very few FIXING IT
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Old Jun 19, 2018 | 12:35 PM
  #14  
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Originally Posted by Pontiacman
Mine 1991 larado 4.0
No fuel pressure/new fuel pump
Drove all day ok next day died in alley
Was able to limp it/with gas/no fuel pressure
again/ changed fuel pump again/filter
AS relay new/fuel pump relay also
Swapped ecm with known good one/
3- capacitors-thing
(Ok chuckle
Pulled the even/ cracked silicone/dug out
Radio shack had the 3/ mine 2-small 1-taller
25.00-later.
Popped tall capacitor!
thus ecm from wrecking yard / motor has hole in block
Pulled pdb loose looking for shorts nothing
all looks very good
Oxygen sensor taken out/inspected tested
Ok/ only 1 oxygen sensor
Ckp looks ok
cam sensor. Also looks ok
checking grounds and for corrosion
30 amp keeps blowing
can a bad ckp do this?
Wiring in loom in harness in place secured
All looks good
1 owner jeep me 2nd
Last shop replaced ballast resistor on firewall to get running
Pulled dash/ all bulbs good/replaced several
Couple small ones missing -got
Have pulled all fuses all good
30 amp- ?
did find a dead mouse by battery tray
Cleaned out inpeccted -no signs bad
Look if at schematics
My eye sight sucks so small
Ready to pull starter
Works great but
No fuel pressure
Pump never turns on
DROPPED phone broke it
Been spending hours reading
About this same problem
But very few FIXING IT
Thats just horrible.
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Old Jun 20, 2018 | 10:11 AM
  #15  
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Originally Posted by fb97xj1
Thats just horrible.
My guess is that Mark is being trolled.
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