odometer, speedometer, tranny HELP please

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Apr 20, 2009 | 02:24 PM

firemanpat29

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Tuned

Joined: Mar 2007

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From: Havana Fla

odometer, speedometer, tranny HELP please

My new F250 is in the body shop I am stuck driving a 1996 f150 with auto tranny. Here is a list of the symtoms. no odometer display, no speedometer, HARD shifts, oh and the air bag light blinks but might be unrelated. This is a spare company truck and I think the only one to use it latey is the boss'es yard man. I know I had to go pull it out of the mud two weeks ago. Dont know if problem existed before that or not. Any suggestions? If I get it in the few days my truck is in the shop I could make some points with the boss!!! Thanks

Apr 20, 2009 | 04:16 PM

subford

Fleet Owner

Joined: Aug 2005

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From: Easton,Ks

That sounds like a bad fuse, check both sides of all the fuses with a test light.

Apr 20, 2009 | 05:26 PM

luismadrigal

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Joined: Apr 2009

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check this..https://www.ford-trucks.com/forums/8...r-jumping.html

Apr 20, 2009 | 06:51 PM

nyeguy007

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Joined: Oct 2006

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It could be the Vehicle Speed Sensor, located on top of the rear differential. Check to make sure the wire is attached and didn't get yanked off. If the wire is still attached, the sensor may be bad.

The transmission shifts depending on, among other things, the speed of the vehicle, if the speed sensor is not working, or on its way out, funny things start to happen, a bouncing speedometer accompanied with random gear shifts, and usually your ABS light will come on.

Apr 20, 2009 | 07:12 PM

subford

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From: Easton,Ks

The VSS and its wiring will not make the odometer display blank.
Still sounds like fuses.

Apr 20, 2009 | 09:37 PM

fkaster01

Senior User

Joined: Mar 2009

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From: metro detroit area...

could be the PSOM also... I hear that will cause the odometer to have problems, and will also cause shifting issues as well. the vss is a good place to start cause its easy to get to, the fuses as well, but if you don't find problems there check the psom on the back of the speedo for broken connections as I hear the soldering in some years got pretty shotty. The only problem if it is the psom is that you can't buy one from anywhere besides the dealership or a scrap yard. I've seen clusters at the yard for about forty bucks, but someone told me that part would cost around four hundred at the dealership and they require that they do the install

Apr 20, 2009 | 09:48 PM

rikard

Posting Guru

Joined: May 2007

Posts: 1,208

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From: North Reading Mass

On our much abused 92 f150 the fuse that subford mentioned kept blowing. The wiring for the OD lockout button, on the column, was shorting out.
regards
rikard