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V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters
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Old 02-04-2011, 01:57 PM   #1
NewEdgeStang00
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Default Shop installation incorrect? Misdiagnosis?

So I had this problem with the whole car vibrating and the shop told me the harmonic balancer slipped (which when visually inspecting I could see). So the shop replaced it with a Harmonic Balancer from Ford and the problem was WORSE. Now you can actually see the whole car shaking. So the shop told me its the balance shaft behind the HB, and would cost $1400 to fix. So for the past week I've been looking around trying to buy a new car, until I found out from some old forums that the 2000 v6 mustangs don't have a balance shaft. So did the shop install the HB wrong or something? I looked under the hood and can't make it out.
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Old 02-04-2011, 02:11 PM   #2
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The shop probably installed the wrong balancer for your car. the 2000 V6 have two different balances. cars built prior to April 2000 are externally balanced and cars built after April 2000 are internally balanced. When was your car built, and what balancer did the shop put on there?
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Old 02-04-2011, 02:19 PM   #3
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Quote:
Originally Posted by PNYXPRESS View Post
The shop probably installed the wrong balancer for your car. the 2000 V6 have two different balances. cars built prior to April 2000 are externally balanced and cars built after April 2000 are internally balanced. When was your car built, and what balancer did the shop put on there?
Thanks for the response but yes I knew about this already so I bought the balancer myself from Ford dealership and also asked in person if it was the one for the prior Externally Balanced 2000's, and the guy double checked and said yes. Then brought it to shop to install.

Just checked my door's label and just noticed the build date says 09-99. Does that mean it's actually a 1999 model?? If so I feel so blind haha...

Also came across this http://www.enginebuildermag.com/Arti...8l_engine.aspx that says the 99-00 RWD's DO have a balance shaft. So now I'm even more lost
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Old 02-04-2011, 02:34 PM   #4
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yes there is a balnce shaft, but it is up high in the block between the heads above the cam shaft.

Click the image to open in full size.
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Old 02-04-2011, 02:41 PM   #5
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Thanks, that was actually the same picture I was looking at on Google, but wasn't sure of the year. So since my car was built in 99 does that classify it as a 99 or 00 car? Because when it was sold to me it was labeled as a 2000.
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Old 02-04-2011, 02:53 PM   #6
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Does it have a anniversary badge or just a running pony on the fenders? The 2000 mustangs started to hit dealerships around mid-october so they started building them a few months earlier.


What did you type to find that pic on google as that is of my personal car's engine?
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Old 02-04-2011, 02:58 PM   #7
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Oh that's right, the 99's were anniversary editions right? No it just has the normal Tri-Bar and Pony.
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Old 02-04-2011, 04:06 PM   #8
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And I don't remember what u typed exactly, but it was something like "mustang balance shaft" and I might have included "2000"
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Old 02-04-2011, 05:20 PM   #9
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It could have been made in late 99 and sold as a 00. My white car is that way.

I say you have the wrong har bal on there. Did the stock crank pulley have the weights on it? If so you need that crank pulley again. Somewhere I have a pic to show it, but don't have time to dig it out right now.
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Old 02-04-2011, 05:57 PM   #10
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Yeah the stock pulley has a counterweight near the gear, I just uploaded a pic from my phone to Photobucket, i'll link it here when it pops up. But after comparing the two I think (and hoping) that you're right! And I hope ford refunds me the part..
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Old 02-04-2011, 05:57 PM
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2000, 289, 38, balance, balancer, engine, ford, harmonic, install, installation, misdiagnosis, mustang, semptons, shaft, shop, slipped, time, v6

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