85 jeep cherokee

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  #1  
Old 05-09-06, 02:30 AM
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85 jeep cherokee

my little brothers wont fire up.

No spark from distributor to spark plug.
No spark from coil to distributor.


Is it probably the coil??? thanks
 
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  #2  
Old 05-09-06, 02:42 AM
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no spark

most likey do you know how to replace it if not go to the libary and get a sevice manual for you car it will tell you how to replace it you can keep it for about a week and renew it once good luck
 
  #3  
Old 05-09-06, 02:49 AM
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engine size would help the coil is usually easy enough to change it just doesn't fail that often most of the time it is another component causing a no spark.
 
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Old 05-09-06, 04:40 AM
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Save a trip to the library (and gas!) and go here:

http://www.autozone.com/servlet/UiBr...3d80151bf3.jsp

It will give you some pretty good troubleshooting including testing the coil. You will need a volt/ohm meter.
 
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Old 05-09-06, 05:57 PM
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Originally Posted by mexican163
my little brothers wont fire up.

No spark from distributor to spark plug.
No spark from coil to distributor.


Is it probably the coil??? thanks
Does the coil have a couple of thin wires leading to it besides the big fat one coming out of it? If so, have you guys checked to see if you have 12 volts coming into the (+) terminal? If not, you have problems even before the coil.
 
  #6  
Old 05-09-06, 06:35 PM
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ok

engine is a 2.8 v6. (I know, very uncommon) I did not check to see if there is power getting to the coil. That would probably be a good idea. I know that coils arent a common problem but this truck has over 300000 and I just need it to last him about 2 more months (just graduating and got him a good job) Thanks for all the help
 
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Old 05-10-06, 03:47 PM
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Let us know if you have current there at the coil with the key in the "on" position. If not, maybe we can steer you were else to start looking.
 
  #8  
Old 05-10-06, 04:00 PM
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The coil test is pretty straightforward and easy
http://www.autozone.com/servlet/UiBr...3d80151ccc.jsp
 
  #9  
Old 05-10-06, 04:07 PM
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OK........Simple test. Using a test light probe the small wires going to the coil. bat+ should have power with key on........go to Neg- side of coil and have someone crank the engine. Test light should flash as engine cranks. If you get no light on the neg side at all.........you've got a coil problem (open primary).........If it doesn't flash, get an ignition module and pick up coil...........if it flashes and you STILL have no/weak spark, once again replace the coil
Gotta love them Jeeps.........Cram a Chevy engine in with a baby 904 mopar trans and fire it up with Renix (renault/Bendix) ignition.......
 
  #10  
Old 05-10-06, 06:01 PM
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thanks

tested and was dead. got a new coil and BAM!! back on the road for another 3 months (or when it breaks again, whichever is first) Thanks for all the help
 
  #11  
Old 05-10-06, 06:17 PM
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Sweet
Thanks for he update
Good Luck!
 
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