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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 12-23-2010, 09:46 PM   #1
Dasmo1135
 
Join Date: Dec 2010
Vehicle: 2002, Ford, Mustang
Location: Florida
Posts: 1
Default Shifting problems

I have a 2002 mustang v6 3.8L, it's automatic and fully stock.
It's not mine yet though, my parents are giving it to me for my birthday, but it has a problem shifting from gear to gear. My dad said he got it checked out and it's just because of an old transmission, but my uncle said I can get an ECU check to see what's really going on. Does anyone have similar problems/solutions? Going from 0 to 55 on the highway it seems to stay low in RPM's and doesn't kick into gear until three or four seconds later than it should? What can I do to fix this? oh and How much does an ECU check cost?
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Old 12-24-2010, 03:47 AM   #2
NeoTokyo
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Default

Well the 4R70W trans is a very good trans, very strong too.
I would take it into a dealer and get a full over diagnostic (Its about $70) and see what they say before you get the car from your parents.

Its probably a great time to flush that trans fluid too and chance the filter.

Ask the dealer how much that is and ask them if they could put a new valve body on for you.

The reason why I am suggesting a new valve body is because I am going to recommend a JMod valve body.

Its pretty much what Ford SHOULD have done and is a very popular upgrade to allow more fluid to flow through the body allowing better shifting and longer life of the trans.

Its about $119 and when you ship your old one back you get $40 dollars back.
You can buy it here.
http://www.vapauto.com/jmod.htm

The dealer will be able to give you full insight on the health of the car and the transmission.

Good Luck and Welcome to MustangForums.

-Eric-
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Old 12-24-2010, 03:47 AM
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02, 1994, 2002, ford, gear, locking, mustang, page, problem, problems, shift, shifting, shifting problems, transmission problems, v6

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