E99 350 ATS trans shudders

86ford69jw

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Truck shudders after it shifts into third. Around 50mph under light pedal the whole truck shakes. Changed oil and filter, fuel filter, trans filter and fluid. All u joints are tight. Rear end is tight. New tires.
We're lost! If you get on it it's fine. Turn chip off its better but not gone. TS6. Gunna take it to the trans shop tomm. Just looking for ideas.


97 F250 HD auto 4x4
3.55s turning 16.6!
 

IDIoit

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mine does this when cold.
ive changed pressure solenoid . no work
i thought TC, but symptoms point to injectors
have you done a buzz test?
 

IDIoit

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run it on a scanner, do a buzz and cont test...
if it all checks out suspect TC

scrap that tuner.....
 

86ford69jw

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Getting a auto enginutiy scanner soon. We're doing a build on a e99 engine soon and will doing custom times for this chip.


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3.55s turning 16.6!
 

86ford69jw

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So we did a TC test. Touch the brake pedal while it is shaking. No diff when breaks applied. My boss is sure it is the TC sensor. Waiting on a friend to get around so we can put on his scanner


97 F250 HD auto 4x4
3.55s turning 16.6!
 

86ford69jw

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Finally got a hold of my buddie with the scanner and did a buzz test. number three is bad. Gunna change it out Monday


97 F250 HD auto 4x4
3.55s turning 16.6!
 

IDIoit

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post back when you do... FYI make sure you put the piston at TDC, or find a way to drain the oil, or it will keep it from spinning over, and spit your starter out.
ask me how i9 know! lol
luckily i didnt waste a rod.
 

86ford69jw

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The ole take the glow plug out trick don't work any more???? Lol. I've had lil practice. This is my fifth injector job. Never had any issues. Working on a 04 6.0 at the same time. plus getting ready to build a 7.3.. Plus build a giant corn blade for our 4 wheel drive tractor.


97 F250 HD auto 4x4
3.55s turning 16.6!
 

IDIoit

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i didnt know that trick when i did my injectors.
was my first diesel ever, dove right into a head swap on an 01 7.3
 

IDIoit

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(that moment when you find out you're trying to help out a *******)
 

86ford69jw

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This is not my truck we are working on.
I'm very sorry yet again Bill. I had a very bad year with the accident and having to move out our house within a week Cus of black mold. You will be paid in full next week when my taxes come in.


97 F250 HD auto 4x4
3.55s turning 16.6!
 

86ford69jw

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Also my boss changed it out today with a good used one. But didn't change the harness under the valve cover and said it made no diff. He is gunna change the harness tomm.


97 F250 HD auto 4x4
3.55s turning 16.6!
 

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