[AT] OT - Pickup Transmission Question

[Rob Gray]

Thnks to everyone who responded to my post!

The thing that really bugs me about this whole situation is that right 
about when this all started on the same day I smelled a hot electric 
smell coming from the engine compartment. When I investigated it was 
obvious that rodents had been taking up residence in the engine 
compartment because the heat insulation around some of the wiring 
harnesses had been opened up by the buggers. The varmints also had left 
food in the engine compartment. When I brought the vehicle to the AAMCO 
this time I made sure I mentioned this because I knew this was an 
electric controlled transmission. They dismissed my idea outright 
essentially saying I was clueless and said they needed to open up the 
transfer to see what was wrong. I don't trust them at all after hearing 
some of these comments from folks here that it sounds like it is 
probably an electrical issue. They are still saying it is mechanical.

Rob
NE PA


Jim and Lyn Evans wrote:

>Listen to the guys that are telling you it's a sensor, bad wire or ground.
>I am 99% sure your transmission problem is not mechanical, but electrical.
>If you have any mechanical ability at all and plan to keep your truck, buy a
>factory service manual ($100 - $150) and a computer scan tool ($200-$250).
>You will be able to fix anything on your truck.
>
>-----Original Message-----
>From: at-bounces at lists.antique-tractor.com
>[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Steve W.
>Sent: Wednesday, December 22, 2004 1:26 AM
>To: Antique tractor email discussion group
>Subject: Re: [AT] OT - Pickup Transmission Question
>
>Sounds like a bad VSS (Vehicle Speed Sensor) Simple bolt on part that
>attaches to the rear of the transfer case. Sends vehicle speed to the
>computer which displays speed and controls shifting. Wiring may have been
>damaged when they pulled the unit to do the trans work.
>
>Steve Williams
>
>Pacifism - The theory that if they'd fed Jeffrey Dahmer enough human flesh,
>he'd have become a vegan.
>
>----- Original Message -----
>From: "Rob Gray" <Robgray at epix.net>
>To: "Antique tractor email discussion group"
><at at lists.antique-tractor.com>
>Sent: Tuesday, December 21, 2004 9:33 AM
>Subject: [AT] OT - Pickup Transmission Question
>
>
>  
>
>>I have a '90 F150 automatic 4X4 which started to have shifting
>>    
>>
>problems
>  
>
>>the same day as the speedometer started to "bounce" around from zero
>>    
>>
>to
>  
>
>>the actual driving speed. The transmission continued to shift worse
>>    
>>
>and
>  
>
>>worse as the speedometer got worse and worse until the speedometer
>>stopped working at all and I could barely drive the thing due to
>>extremely off-timing gear shifting. This was supposedly one of the
>>    
>>
>first
>  
>
>>years for Ford's electronic transmissions so I'm guessing that these
>>trucks use the  speedometer to assist the auto tranny in "knowing"
>>    
>>
>when
>  
>
>>to shift?
>>
>>I left it at AAMCO and they said that they have to open up the
>>    
>>
>transfer
>  
>
>>case and take a look. Has anyone experienced this sort of problem
>>    
>>
>before
>  
>
>>that could give me any insights as to how big a job it was to get
>>fixed....? I just had the torgue converter on the transmission
>>    
>>
>replaced
>  
>
>>6 months ago and with a truck this age I'm somewhat leery of digging a
>>hole too deep expense-wise... Maybe I should park it out in the field
>>and start one of those old vehicle "collections" you see on some
>>    
>>
>places
>  
>
>>here and there.... ;)
>>
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>>    
>>
>
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