Need tranny Advice
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Elder User
Joined: Oct 2007
Posts: 783
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From: Nova Scotia
Need tranny Advice
After installing the DP Tuner and under hard acceleration, the transmission shifts extremely hard from 2nd to 3rd with a slight delay before shifting up. What would be the most likely cause for this?
Thanx... don't want to prematurely take out the tranny.
Thanx... don't want to prematurely take out the tranny.
Thread Starter
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Elder User
Joined: Oct 2007
Posts: 783
Likes: 0
From: Nova Scotia
No, I didn't request anything special with Jody in regards to tranny shifting. I know he automatically firms up the shifts and locks the TC better. I haven't been able to get the PCM reprogrammed for the bigger tires which, if I understand correctly, affects transmission shifting and ABS function somewhat.
Can I take it to a transmission shop for them to reduce line pressure? Or could it be the solenoids acting up?
Can I take it to a transmission shop for them to reduce line pressure? Or could it be the solenoids acting up?
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
Why don't you call up Jody at DP and see what he says? I doubt it is the tranny itself since it didn't do it prior to you putting in the DP tuner.
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Elder User
Joined: Oct 2007
Posts: 783
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From: Nova Scotia
Wasn't meaning any disrespect Ken, but you were pointing me to programming which I don't have access to...
Jody's been away so I haven't been able to contact him but I did do a search on the 7.3 forum and Springer Pop seems to have a good explaination of what the problem is. The accumulator valves get worn out and can cause irratic shifts. The reson I probably didn't notice it before (other than the slow shifts), is because I wasn't putting enough power through the tranny to have it come up hard like it does at times. It only happens at WOT... other than that it shifts good.
Jody's been away so I haven't been able to contact him but I did do a search on the 7.3 forum and Springer Pop seems to have a good explaination of what the problem is. The accumulator valves get worn out and can cause irratic shifts. The reson I probably didn't notice it before (other than the slow shifts), is because I wasn't putting enough power through the tranny to have it come up hard like it does at times. It only happens at WOT... other than that it shifts good.
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Sit. Stay.
Joined: Oct 2001
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From: Washington State
I know. I was just kidding around. 
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