1994 4R70W problems

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Dec 30, 2017 | 08:18 AM

AZmoparguru

Thread Starter

New User

Joined: Jun 2013

Posts: 19

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From: Glendale, AZ

1994 4R70W problems

Hey everybody, I’m having an issue with the 4R70W in my 94 F150. The issue is, when the trans is at operating temperature, I’m getting a bad shudder during the 1-2 shift, similar to a converter shudder. The trans itself was rebuilt by Ford and only has about 30,000 miles on it. No issues with any other gear, there are no codes, and no issues with converter lockup. There is no material in the pan, always filled with Mercon V. I even installed a new bonded 1-2 accumulator, and swapped the shift solenoids and lockup solenoid and the result was no change. It will not act up at all when it’s cold. I’m about ready to pull it out and go through it and rebuild it, but was wondering if there was anything else I can check. I though about the EPC solenoid, but again, there are no codes. I’d appreciate ANY suggestions

Dec 31, 2017 | 11:41 PM

jk080

Transmission Rebuilder

Joined: Jul 2008

Posts: 1,569

Likes: 62

From: North Georgia

You may want to install a shift kit before you pull it and rebuild it, I have had good luck with shift kits in these to correct problems like this.

I have used the Superior and Trans-go kits with good results.