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Old 03-15-2012, 12:41 PM   #1
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Need help! My stang has a miss!

Let me start from the beginning. I have a 2002 gt vert. Its a 4.6 Windsor ( I know it should be a romeo but apparently the PO did a swap.) Yesterday while standing over the engine had just put a new coolant fan resistor on was watching to make sure the fan was going to come on as should, she started missing. No noise or anything just went into a dead miss on #1 cylinder. First thought coil. I had just replaced plugs and coils about a month ago. Figured got a bad one. So I swapped a couple of coils around to see if the miss moved with the coil. It didn't #1 still dead. Went and bought a new plug and dropped in. No change. Next thought injector. Swapped a couple around. No change. Then did the dreaded compression test. Range from 190 to 220. Dead cylinder being the strongest! Lol! What am I missing?! Im at a loss. Any help will be greatly appreciated!
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Old 03-15-2012, 01:20 PM   #2
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Re: Need help! My stang has a miss!

had a sim prob once ,IT ENDED UP BEING One of the wire leads to the coil had a break in it .....
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Old 03-15-2012, 01:40 PM   #3
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Is there a way to test it without tracing the wires back?
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Old 03-15-2012, 01:45 PM   #4
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Is your injector pulsing? Hook a noid like up to the connector or in a pinch get a 194 license plate bulb and straighten the wires in the bottom out and put it in the plug for the injector

---------- Post added at 12:45 PM ---------- Previous post was at 12:44 PM ----------

Quote:
Originally Posted by jwhayne0001
Is your injector pulsing? Hook a noid like up to the connector or in a pinch get a 194 license plate bulb and straighten the wires in the bottom out and put it in the plug for the injector
Should flash frequently while running
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Old 03-15-2012, 02:39 PM   #5
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Thanks I'll try that tonight!

---------- Post added at 01:38 PM ---------- Previous post was at 01:18 PM ----------

Will that work on the coil plug to?

---------- Post added at 01:39 PM ---------- Previous post was at 01:38 PM ----------

And if I use a tester on the coil what kind of voltage should I see?
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Old 03-15-2012, 03:29 PM   #6
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Quote:
Originally Posted by Fatboy scott
Thanks I'll try that tonight!

---------- Post added at 01:38 PM ---------- Previous post was at 01:18 PM ----------

Will that work on the coil plug to?

---------- Post added at 01:39 PM ---------- Previous post was at 01:38 PM ----------

And if I use a tester on the coil what kind of voltage should I see?
Never tried the coil plug, wouldn't recommend the tester on a coil, put a plug in the end of the numb 1 wire and ground it to a exhaust manifold bolt
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Old 03-15-2012, 06:46 PM   #7
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Re: Need help! My stang has a miss!

Hi folks,

When your done with this, look me up. I have a tick or two I need to get rid of but my skill is lacking more than my enthuaism to correct the problem. No deep pockets here either. I'll stay posted on the results here too. Thanks.
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Old 03-20-2012, 07:24 PM   #8
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After going through a wiring harness, it was a corroded plug at the PCM. Guess I should have checked there first and now I wouldn't be going through so much tape and wire harness!
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