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Unread 05-08-2014, 11:57 AM   #1
jeepsareballin
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1999 TJ Wrangler 
 
Join Date: Apr 2014
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distributor question on a 99 inline 6 4.0

I recently had my inline 6 4.0 rebuilt. We took it out of my 99 wrangler ourselves. That was no problem but now that were puttin it back in I want to make sure that I put the new distributor in correctly before I get it all the way back in only to find out that I did it wrong.

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Unread 05-08-2014, 07:47 PM   #2
greenmachine99
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1999 TJ Wrangler 
 
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Location: Hagerstown,Maryland
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Quote:
Originally Posted by jeepsareballin
I recently had my inline 6 4.0 rebuilt. We took it out of my 99 wrangler ourselves. That was no problem but now that were puttin it back in I want to make sure that I put the new distributor in correctly before I get it all the way back in only to find out that I did it wrong.
You'll be able to get it running, but the fuel sync will need to be set at the dealer or someone with a snap on scanner. The distributor on yours doesn't tell the spark plugs when to fire, the pcm does that via crank sensor. The distributor tells the injectors when to fire via cam sensor under the distributor cap. You cannot set this with a timing light.
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Unread 05-14-2014, 07:12 PM   #3
laybackman
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1995 YJ Wrangler 
 
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Quote:
Originally Posted by jeepsareballin View Post
I recently had my inline 6 4.0 rebuilt. We took it out of my 99 wrangler ourselves. That was no problem but now that were puttin it back in I want to make sure that I put the new distributor in correctly before I get it all the way back in only to find out that I did it wrong.
Ok. First off IF the dizzy was not put in properly it may not fire at all.

Assuming the engine builder put the timing chain kit in properly and you installed the dizzy properly this engine should run off of the factory presets in the brain.

Then as it goes from open to closed loop mode over time the brain learns from the inputs from the sensors and averages out the amounts.
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