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Replaced engine. No electricity from coil

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Old 10-10-2010, 10:35 AM
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Default Replaced engine. No electricity from coil
Would the TPS keep the coil from producing power?
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Old 10-10-2010, 10:39 AM
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No.
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Old 10-10-2010, 10:49 AM
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have you checked to make sure theyres powere going TO the coil?
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Old 10-10-2010, 12:21 PM
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need more info. does it turn over, can you hear the fuel pump, need to know what tests you have preformed
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Old 10-10-2010, 12:38 PM
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^^ Yeah, agreed, more info. ^^
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Old 10-10-2010, 01:16 PM
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Sorry guys.
Engine turns over fine. No spark.
Fuel pressure is strong
Did the screwdriver to ground from the distributor and coil. Nothing. That's where I stopped.
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Old 10-10-2010, 01:20 PM
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Year?
Which Engine?
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Old 10-10-2010, 01:45 PM
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Originally Posted by always89
Sorry guys.
Engine turns over fine. No spark.
Fuel pressure is strong
Did the screwdriver to ground from the distributor and coil. Nothing. That's where I stopped.

read my first post. obviously the coil is not getting power. start at the connector and work back from the cap
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Old 10-10-2010, 02:46 PM
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1987 Jeep Cherokee. 4.0 engine

I did replace the coil, and the ignition coil relay (the thing under the coil that has the two electrical connectors.

Could the distributor being wrong (not on cylndr 1 at TDC) cause this problem?
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Old 10-10-2010, 03:08 PM
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I wish you guys would stop replacing ignition coils any time there is no spark.
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Old 10-10-2010, 03:53 PM
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Sorry bustedback. The rest of your post cut off. I got the comment about guys replacing coils, but The actual suggestion didnt post. Im sure your not the type to waste time typing on a post just to complain.

Thanks for all the suggestions folks

stuck like chuck, Ill check the power back from the coil. Thanks.
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Old 10-10-2010, 03:53 PM
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Originally Posted by Bustedback
I wish you guys would stop replacing ignition coils any time there is no spark.

i was just thinking the same thing when i read his post.
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Old 10-10-2010, 03:55 PM
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Originally Posted by always89
Sorry bustedback. The rest of your post cut off. I got the comment about guys replacing coils, but The actual suggestion didnt post. Im sure your not the type to waste time typing on a post just to complain.

Thanks for all the suggestions folks

stuck like chuck, Ill check the power back from the coil. Thanks.
especially now that you said you replaced something that leads me to believe that your not even getting power at the coil. check the power coming into it. and then the signal coming out. if you have power in but no power out my mathematical equation would = bad coil???
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Old 10-10-2010, 06:36 PM
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Originally Posted by always89
Sorry bustedback. The rest of your post cut off. I got the comment about guys replacing coils, but The actual suggestion didnt post. Im sure your not the type to waste time typing on a post just to complain.

Thanks for all the suggestions folks

stuck like chuck, Ill check the power back from the coil. Thanks.
Nope, nothing was cut off, I just stop by to complain. I've described how to diagnose a coil so many times, I'm just tired of re-explaining over and over. Ignition coils do not fail very offten, a few simple diagnostic preceedures and a cheap 12volt test light could have saved you some cash.
Now since you replaced the engine, did you bother to check all of the electrical connections and grounds? Have you checked the fuses and relays? Did the old engine run at all before the swap?
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Old 10-10-2010, 06:54 PM
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Originally Posted by always89
Sorry bustedback. The rest of your post cut off. I got the comment about guys replacing coils, but The actual suggestion didnt post. Im sure your not the type to waste time typing on a post just to complain.

Thanks for all the suggestions folks

stuck like chuck, Ill check the power back from the coil. Thanks.
being a smart alec aint gona get you any help buddy.. and have u even checked your cps? that was my problem
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