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Unread 02-07-2014, 03:49 PM   #1
DustyGeneral
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Engine Trouble

1993 YJ 6cyl, it's my DD. Came home from work and parked, playing around in the garage and started it back up to fiddle with the heat controls. Ran like a dream. I shut it off and went inside to take a shower and when I came back outside to go somewhere she started and ran a little rough and the sputtered and died. When I went to start it again it would crank but not turn over. The fuel pump primes, but when we checked the spark the wire we checked didn't have spark. What should I be looking for?

I imagine that something is jacked up in the dist cap. Thoughts?

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Unread 02-07-2014, 07:37 PM   #2
Mark05059
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are you getting fuel spraying from your injector
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Unread 02-08-2014, 03:34 AM   #3
DustyGeneral
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are you getting fuel spraying from your injector
Haven't opened anything up to verify that, but I would assume so because when I turn the key for a few seconds you can definitely smell gas.
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Unread 02-08-2014, 05:16 AM   #4
Mark05059
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that doesn't really mean anything. The fuel pump will prime but if your crankshaft position sensor is bad it wont spray fuel or have spark.
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Unread 02-08-2014, 05:20 AM   #5
Louie4
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Pull the plug wire off the distributor from the coil and see if you're getting spark there. If so, you'll need to check your distributor. If not, you'll need to check the coil and maybe the CPS.
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Unread 02-08-2014, 06:01 AM   #6
DustyGeneral
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Originally Posted by Louie4 View Post
Pull the plug wire off the distributor from the coil and see if you're getting spark there. If so, you'll need to check your distributor. If not, you'll need to check the coil and maybe the CPS.
That's what I did and got no spark. So you're thinking coil and/ or cps
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Unread 02-08-2014, 06:08 AM   #7
Louie4
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Quote:
Originally Posted by DustyGeneral View Post
That's what I did and got no spark. So you're thinking coil and/ or cps
Yes. You can check the coil with a volt meter. If you don't have one of those Autozone can also do it for free. You can also do the same for the CPS.

From my Haynes manual it says the resistance reading between terminals A & B should read 200 +/- 75 ohms (with engine at normal operating temps). A & B should be marked on the connector...should be.
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Unread 02-08-2014, 06:21 AM   #8
DustyGeneral
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Originally Posted by Louie4 View Post

Yes. You can check the coil with a volt meter. If you don't have one of those Autozone can also do it for free. You can also do the same for the CPS.

From my Haynes manual it says the resistance reading between terminals A & B should read 200 +/- 75 ohms (with engine at normal operating temps). A & B should be marked on the connector...should be.
Haha and since it won't start I guess I can't test for it since I can't get it to operating temp...darn
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Unread 02-08-2014, 09:08 AM   #9
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Quote:
Originally Posted by DustyGeneral View Post
...it would crank but not turn over...
what does this mean?
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Unread 02-08-2014, 09:10 AM   #10
Louie4
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Haha and since it won't start I guess I can't test for it since I can't get it to operating temp...darn
Yeah, that crossed my mind after the fact.

But wait...check this out.

http://www.cherokeeforum.com/f51/testing-cps-5563/
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Unread 02-08-2014, 09:47 AM   #11
DustyGeneral
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Originally Posted by fishadventure View Post

what does this mean?
Turn the key and it would crank, the starter would turn (vrvrvrvrvr) but not turn over (VROOOOM) and run haha... like my "sound effects"?
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Unread 02-08-2014, 09:48 AM   #12
DustyGeneral
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Quote:
Originally Posted by Louie4 View Post

Yeah, that crossed my mind after the fact.

But wait...check this out.

http://www.cherokeeforum.com/f51/testing-cps-5563/
I have already thought it was the coil, just getting yalls thoughts.
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Unread 02-08-2014, 08:11 PM   #13
DustyGeneral
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Swapped the coil and she fired right up. The stock coil was cracked, funny thing was all of the cracks were on the back and underside so everything looked good from the outside looking in. But in reality it was beat to snot.
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Unread 02-09-2014, 06:09 AM   #14
Louie4
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Quote:
Originally Posted by DustyGeneral View Post
Swapped the coil and she fired right up. The stock coil was cracked, funny thing was all of the cracks were on the back and underside so everything looked good from the outside looking in. But in reality it was beat to snot.
Glad you figured it out and thanks for reporting back.

Oh and my link was for the CPS which is not the problem apparently.
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Unread 02-09-2014, 06:36 AM   #15
DustyGeneral
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Originally Posted by Louie4 View Post

Glad you figured it out and thanks for reporting back.

Oh and my link was for the CPS which is not the problem apparently.
I always try to reply when I start a thread like this. It always bugs me to see a thread that I'm interested in and they never reply back to let us know how it turned out.
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