Engine code P0708 Trans. Range Sensor Circ. High Input? - Ford Powerstroke Diesel Forum
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Old 09-18-2008, 12:15 PM
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Engine code P0708 Trans. Range Sensor Circ. High Input?

Hello Everyone,The continuing saga of the hard shift/ searching trans.. My truck is a 1996 PSD w/ an auto. trans. The problem I am having is that when the check engine light is on the trans. shifts very hard,when the check engine light is off the truck shifts normally. Since this started happening my trans. will not stay in high gear(keeps shifting out of OD)Up till now the only code being thrown was P1280 ICP Circuit Out of Range Low. I just checked codes again and now I'm also getting a P0708 code Trans. Range Circuit Sensor Circ. High Input.this seems more like a code related to my trans. problems) Could anyone tell me where this sensor is located and also if it could be the source of the symptoms described above? Oh yeah one other thing and some point since all this stated happening,the cruise control has stopped working! Any help would be greatly appreciated.
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Old 09-18-2008, 05:10 PM
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OK,Sorry for not giving all you armchair mechanics out there an easy one,But seriously someone must have some ideas. Anything would be greatly appreciated. Thanks
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Old 09-29-2008, 10:20 PM
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This is the exact problem that I need help with. Same engine, same trans, same hard shift, no OD, but in an E350.

This is why I came to this board.

The local Ford garage is pointing to the electric throttle sensor. Exactly which part, I am not sure, but I believe the part is on the engine.They (Ford Corp) say the part was used ONLY in 1996 and is no longer made. The local garage says the Pick-N-Pulls are stripped clean.

There has got to be a better answer than "Your Screwed."
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Old 09-29-2008, 10:39 PM
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ftmfg, I also found your two other threads. Did all these code show up at the same time? The van I am going to be working on belong to a friend. He too paid big $$ for a diagnosis and did not get an answer.

Code P1820 hard shift/A/T shifting out of gear

Code P1280 ICP circuit out of range / low
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Old 09-30-2008, 05:00 AM
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I am no tech I do know that the engine and trans work together. It sounds to me the problem started in engine. It seems you are not going to take it to a shop so you will have to do what i do replace parts untill fixed. I would check all filters fluides. Oil in a diesel has a lot more to do with the way a diesel runs than a gas. The power youre engine makes is a direct result to how youre trans behaves. From there i would check or replace ICP. Give people on here more info on youre trucks such as mileage,any mods done how long you have been having problem. Some body with a lot more knolage than me should come along.
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Old 10-01-2008, 05:38 AM
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The trans range sensor is on the driver's side of the trans where the shifter cable attaches. It's the black plastic part with all the wires. These sensors are not the best and are known to fail. A P0708 code can also set if there is a wiring problem to the sensor.
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Old 10-01-2008, 05:54 AM
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if the trans sets a code it will go into a limp home mode, usually max line pressure. that will give you really funky shift patterns.
as mark k said, it's on the d/s side of the trans.
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Old 10-02-2008, 09:25 PM
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Limp mode. That sound about right. I'll have to charge the battery and check for codes. This van has been sitting for a while since the dealership gave up on it. I am kind of searching in the dark right now and gathering info.

Thanks.
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