Tranny question - Diesel Forum - TheDieselStop.com
'99 & up Upgrades and Aftermarket - 7.3L Engine Upgrading or adding OEM or aftermarket equipment to your 1999-Up Super Duty or Excursion with 7.3L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

 
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post #1 of 4 (permalink) Old 07-19-2013, 06:11 PM Thread Starter
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Tranny question

I thought my tranny 4r100 was shot. I took it to the best transmission shop in town and they couldn't find anything wrong with it.
I felt like an idiot.
I bought the truck 55k miles ago and the problem hasn't gotten worse. It has 234k on it now. and I could not even get them to sell me a new transmission with the questions I was asking.

The problem I am having is, When going down the freeway and traffic slows or comes to a crawl, when I step on it the truck will rev till red line and go nowhere. The egts will hit 1000 if I let them.

I was also considering the turbo a problem. When the truck is dogging it my boost is at less then 5 psi. Could A turbo not spooling up properly cause a lag in shifts?

Any help or advice will help us out tring to get 500k out of this truck.

Thank you
JPC

2003 7.3 F-350 XLT 2WD CC, 285,000K,4" Back~ 6" S.S. Miter Stack, International bellowed up pipes, K&N Intake W/Riffraff 6637 Filter,Ebpv delete,Garrett38r Turbo, Garrett high flow outlet, Stage 1 Injectors, PHP Hydra W/GearHead Tunes, Riffraff Plenum inserts, , Riffraff IC and plenum boots, Powder Coated Blue IC Tubes, Pricol Optix- Pyro,Boost,Trans , Hutch and Harpoon mod, Baldwin pre-filter,Rear Shackles,Custom box 12s behind rear,Kicker,Bluray,HDTV's

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post #2 of 4 (permalink) Old 07-19-2013, 06:23 PM
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Yes, a turbo not spoiling up will cause shift issues like you're seeing.

Mark
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post #3 of 4 (permalink) Old 07-19-2013, 06:53 PM Thread Starter
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Mark
Thank you for your reply.
I know you are a transmission guy and don't get into motor issues.
But do you think I am on the right path in my thinking? The tranny shop was impressed with my maintenance on the truck.
I thought there was something other then the transmission causing the shifting issue.
Thank you for your help.
jpc

2003 7.3 F-350 XLT 2WD CC, 285,000K,4" Back~ 6" S.S. Miter Stack, International bellowed up pipes, K&N Intake W/Riffraff 6637 Filter,Ebpv delete,Garrett38r Turbo, Garrett high flow outlet, Stage 1 Injectors, PHP Hydra W/GearHead Tunes, Riffraff Plenum inserts, , Riffraff IC and plenum boots, Powder Coated Blue IC Tubes, Pricol Optix- Pyro,Boost,Trans , Hutch and Harpoon mod, Baldwin pre-filter,Rear Shackles,Custom box 12s behind rear,Kicker,Bluray,HDTV's

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post #4 of 4 (permalink) Old 07-19-2013, 09:20 PM
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Yes, you're on the right path. Fix what's wrong with the engine and that will fix the trans, too.

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