Need Trans Help
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Junior User
Joined: Sep 2010
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Need Trans Help
My trans starts shifting really hard and won't go into 4th gear once the trans temp reaches 140 degress. Do I need to do a trans flush or do I have an internal problem. I have a 99 f2507.3l.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,695
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From: SE Florida
You need to get the codes read before I can tell anything. Don't go to an auto parts store that reads codes free, they don't have the right tools to read Ford transmission codes. You need a good independent shop or a Ford dealer.
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Took my truck to Ford today. They told I had no codes and to just change the fluid. Well on my way home I realized I also had no overdrive.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,695
Likes: 2,616
From: SE Florida
Without codes it's really hard to tell where to start.
If it won't shift to overdrive it will set a code. If there was no codes then it could be a bad PCM. It could also be a problem inside the transmission, or a wiring problem, or a solenoid problem. Any of those should set a code, though.
If it won't shift to overdrive it will set a code. If there was no codes then it could be a bad PCM. It could also be a problem inside the transmission, or a wiring problem, or a solenoid problem. Any of those should set a code, though.
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Junior User
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Without codes it's really hard to tell where to start.
If it won't shift to overdrive it will set a code. If there was no codes then it could be a bad PCM. It could also be a problem inside the transmission, or a wiring problem, or a solenoid problem. Any of those should set a code, though.
If it won't shift to overdrive it will set a code. If there was no codes then it could be a bad PCM. It could also be a problem inside the transmission, or a wiring problem, or a solenoid problem. Any of those should set a code, though.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,695
Likes: 2,616
From: SE Florida
P0708 is an electrical fault in the Transmission Range Sensor (TRS.) It could be the sensor or the wiring to the sensor. I would fix this problem before looking at the P0781 1-2 shift error.
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Just had the truck in the garage there are wires at the PCM that have cuts in them. I think I might have found my problem.
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Fixed all the broken wire last week truck as been shifting fine. Today the same problem came back pulled codes this is what I got. P0713,0755,0743,1754,0783,0781,1746,0720,0603. Is my PCM bad or do I need an overhaul on the trans.
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DTC code P0657
Friend, the transmission hits very hard when going to R or D and it gives me error code p0657, it is worth mentioning that my car has been leaking transmission oil drop by drop
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