Trans. Problem at WOT - TCCoA Forums
 
LinkBack Thread Tools
post #1 of 8 (permalink) Old 03-01-2004, 09:02 PM Thread Starter
Seasoned PostWhore
 
Join Date: Jul 2003
Location: St. Louis
Age: 42
Posts: 2,661
Thumbs down Trans. Problem at WOT

Ok, I have searched, and believe I know what needs to be done, but just to clarify, I wanted to ask before going nuts on the tranny. Got a 95 bird, and from a stop I can push WOT and it pulls fine, until it tries for second. Then I get the "shifts into neutral" problem until I let off of it. I believe this is the 1-2 accumulator, but want to be sure. I was contacted by Dennis R about this and he said to change out to Mercon V, check the pan for metal, and order a chip to my specs to straighten out the EEC. If there is metal in the pan, should I just assume that it's too late and I should try to gather up $1,000 or so for a good rebuilt unit, or just J-Mod it and get a new TC? Thanks in advance.

Jay

These are highly engineered precision vehicles, the first step in diagnosing the problem is to strike the suspected offending part sharply and repeatedly with a blunt object, then re-test.
FordMan77 is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 03-01-2004, 09:05 PM
Moderator
Moderator
 
JustinH's Avatar
 
Join Date: Jul 2002
Location: Austin, TX
Age: 37
Posts: 8,239
Send a message via AIM to JustinH
Quote:
Originally posted by FordMan77
and order a chip to my specs to straighten out the EEC.
Jay
Cmon, Dennis really said this to you?

If its shifting into neutral, I would replace the neutral safety switch and go from there. It is called the MLPS by the ford dealer. Manual Lever Position Sensor.

What color is the fluid? If it has more than 15-20k miles on it, then flush and fill.

Metal in the pan is a bad sign.

JH
JustinH is offline  
post #3 of 8 (permalink) Old 03-01-2004, 09:15 PM
Seasoned PostWhore
 
Rolling-Thunder's Avatar
 
Join Date: Jul 2002
Location: Albany, NY
Age: 57
Posts: 3,247
[QUOTE]Originally posted by JustinH
[B]

Cmon, Dennis really said this to you?





The 94/95's stock shift schedule sucks, but it can be improved with a chip from Dennis, or the other guys that burn the chips.

Maybe that was what he was referring to..............

Steve - TCCoA member
2003 Crown Vic LX Sport
1995 T-Bird LX 4.6 retired at 247,888 miles
Thanks for the ride !
Rolling-Thunder is offline  
Sponsored Links
Advertisement
 
post #4 of 8 (permalink) Old 03-01-2004, 09:25 PM Thread Starter
Seasoned PostWhore
 
Join Date: Jul 2003
Location: St. Louis
Age: 42
Posts: 2,661
Yes, Dennis suggested it. I was told to change to Mercon V, and get a chip IF there are no signs of serious metal in the pan. I do not know why he would suggest a chip, but all I told him was that I had the TC shudder and the odd 1-2 WOT shift issue, and that's where he suggested I start before jumping to a complete rebuild. From other posts, I doubt he would steer me in the wrong direction on this.

These are highly engineered precision vehicles, the first step in diagnosing the problem is to strike the suspected offending part sharply and repeatedly with a blunt object, then re-test.
FordMan77 is offline  
post #5 of 8 (permalink) Old 03-01-2004, 09:28 PM
Seasoned PostWhore
 
Silver95Bird's Avatar
 
Join Date: Aug 2002
Location: Gouldsboro, PA
Age: 36
Posts: 3,178
on a 94-5 i'd swap the accumulators, they should be updated anyway. The mlps is mostly a 94 thing, though it's also a strong candidate. if neither of these solve the problem a chip wont do it either.

96 Mustang GT 5spd. w/ 248A Option (GTS). Stock for now until I get the Roush on.

97 Thunderbird 4.6L LX /w Sport Package
24k B&M Cooler, 1" lowered, Steeda UD Pulleys, Dynomax cat-back, J-mod, 3.73's, PI intake, PI cams, 03 GT MAF/Tube, SCT tuned - Gone but not forgotten.
MAMN12 Drag Racing Team [email protected] In need of updated times.
Silver95Bird is offline  
post #6 of 8 (permalink) Old 03-01-2004, 09:30 PM
Seasoned PostWhore
 
Rolling-Thunder's Avatar
 
Join Date: Jul 2002
Location: Albany, NY
Age: 57
Posts: 3,247
He probably suggested the chip, because it improves the shift schedule.

My 95 shifted way too early, and I could get into OD going uphill at 35 mph. Always felt like the engine was lugging.

With the Dennis chip, the tranny shifts at higher rpms. The tranny shop that did the J-Mod felt that it now shifted at the right moments.

Steve - TCCoA member
2003 Crown Vic LX Sport
1995 T-Bird LX 4.6 retired at 247,888 miles
Thanks for the ride !
Rolling-Thunder is offline  
post #7 of 8 (permalink) Old 03-01-2004, 09:35 PM Thread Starter
Seasoned PostWhore
 
Join Date: Jul 2003
Location: St. Louis
Age: 42
Posts: 2,661
It does seem to shift way too early when driven at a normal pace, so I guess that is why he suggested it. I am going to drop the '03 Cobra rad. and a 24,000 GVM B&M cooler in that I just got and then change the fluid to find out. Glad I have a $350 side job coming up in April. I will be ordering a chip regardless of what the tranny looks like (good or bad), I would just like to get this sorted out ahead of time to avoid shelling out money for stuff I don't need if the trans. is indeed cooked.

These are highly engineered precision vehicles, the first step in diagnosing the problem is to strike the suspected offending part sharply and repeatedly with a blunt object, then re-test.
FordMan77 is offline  
post #8 of 8 (permalink) Old 03-02-2004, 10:07 PM
 
Join Date: Jul 2002
Posts: 286
Fordman: When you hit 2nd, torque is taken by the infamous interim one-way roller sprag clutch, and my bet is that this is slipping under WOT torque. Keep doing this, and it will fail with chunks.

Don't know how many times I've seen this, but there is no way the MLPS can neutral out the tranny if the manual valve isn't moved. It might fool the PCM into dropping pressure all the way back to 65 psi, which would make for a massive slip under power, but you would still be in gear.
bill_s is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TCCoA Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome