Recommended Tuning updates after 4r70w swap?

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Recommended Tuning updates after 4r70w swap?

Unread postby Robert89lx » Sat Aug 10, 2019 9:30 am

Hello,

Just finished up a mild 351w and 4r70w swap into a 1995 Mustang gt auto car but I am having a hard time dialing in the transmission tuning. The TV_Press is all over place and its almost always full stall. This is also generating a lot of heat. I replaced the trans cooler with a bigger stand alone unit and I did install a 3100 stall converter.

From a tuning perspective, I have tried the instructions outlined here (http://efidynotuning.com/trans.htm) and updated the gear ratios as needed but does not seem to make a difference.

I have tried modifying the stock u4p0 tune as well as u4p2.

So this leads me to a few questions:
1. Can my engine torque table being slightly off (as in untouched) create these issues?
2. Is this likely a sign of a bad transmission?
3. Is there more to tuning a 4r70w outside of updating the gear rations?

I have a screenshot attached of a short drive where you can see whats going on.

I am nearly ready to pay money to get this spot on, but I am afraid that the transmission is bad.
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Robert89lx
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Vehicle Information: 1989 Mustang Notch - 2.3 to 351w/4R70w, CBAZA Tuned with QH/BE.

Re: Recommended Tuning updates after 4r70w swap?

Unread postby decipha » Sat Aug 10, 2019 12:22 pm

post your tune and your full engine specs
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Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
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Re: Recommended Tuning updates after 4r70w swap?

Unread postby Robert89lx » Sat Aug 10, 2019 4:09 pm

Its a 351w with stage 1 trick flow cam, gt40 heads and Edelbrock Performer intake and elbow with 75mm TB. Stock bottom end. I have a 340lph pump, 24lb injectors (currently no FPR but will upgrade that in a few weeks and stock 1995 GT MAF.
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Robert89lx
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Posts: 5
Joined: Sun Apr 09, 2017 1:46 pm
Name: Robert
Vehicle Information: 1989 Mustang Notch - 2.3 to 351w/4R70w, CBAZA Tuned with QH/BE.

Re: Recommended Tuning updates after 4r70w swap?

Unread postby decipha » Sat Aug 10, 2019 4:24 pm

I have no way to open a beb file sry
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decipha
Tooner
 
Posts: 17320
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce
07 GMC 2500HD 6L - Veranafer

Re: Recommended Tuning updates after 4r70w swap?

Unread postby Robert89lx » Sat Aug 10, 2019 5:08 pm

That's fine. I can convert over to BIN tonight.

Thank you.
Robert89lx
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Posts: 5
Joined: Sun Apr 09, 2017 1:46 pm
Name: Robert
Vehicle Information: 1989 Mustang Notch - 2.3 to 351w/4R70w, CBAZA Tuned with QH/BE.

Re: Recommended Tuning updates after 4r70w swap?

Unread postby sailorbob » Sun Aug 11, 2019 12:14 pm

decipha wrote:I have no way to open a beb file sry
You can use the 'read only' version of the definition to do this.
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Re: Recommended Tuning updates after 4r70w swap?

Unread postby Robert89lx » Sun Aug 11, 2019 7:50 pm

Update -

1. I was not able to update the BEB file to BIN as I'm using Sailorbobs Cry file and the XLSX from Wes is missing several of the parameters I need.
2. I did pull some codes today:
511 No power to PCM pin 1 or bad PCM (processor)
637 TOT sensor is/was high or open – Transmissions
565 Canister Purge 1 solenoid/circuit failure – Solenoids
621 Solenoid/circuit failure – shift solenoid 1 – Transmissions
624 Solenoid/circuit failure -Electronic Pressure Control (EPC) current is high – Transmissions

I did use this transmission in my last project and it worked great, but before it went into this new car I did J-mod the transmission.

I have 2 theories

1. Need to pull the ECU and clean the J3 port again. The 511 code I assume could be the cause of some of my issues.
2. The harness in the transmission came loose. I have an extra connector I could use to break out and test the EPC, SS1 and TOT.
Robert89lx
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Posts: 5
Joined: Sun Apr 09, 2017 1:46 pm
Name: Robert
Vehicle Information: 1989 Mustang Notch - 2.3 to 351w/4R70w, CBAZA Tuned with QH/BE.

Re: Recommended Tuning updates after 4r70w swap?

Unread postby Robert89lx » Mon Aug 12, 2019 5:18 pm

I am an idiot!!!!!!

This is a 1998 4r70w. I had this in my 89 fox body. I built the wiring harness by hand and made sure it was pinned correctly. I am still using the 98 plastic wiring harness in the transmission and didn't change the wiring on the 1995 harness to match.....
Robert89lx
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Posts: 5
Joined: Sun Apr 09, 2017 1:46 pm
Name: Robert
Vehicle Information: 1989 Mustang Notch - 2.3 to 351w/4R70w, CBAZA Tuned with QH/BE.


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