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Hi All, I have a 93 Coupe Deville, 78k miles, that I need advice on.

During the first cold start of the day, after I shift the car into Drive and begin rolling, the speedometer does not move and the transmission slips significantly. After several minutes and approximately 1-2 miles, the speedometer begins to read accurately and the transmission stops slipping and feels tight again.

Trouble codes reveal

E75 - Vehicle Speed Sensor(VSS) Signal Interrupt
AND OCCASIONALY
E24 - Vehicle Speed Sensor(VSS) Circuit Problem (usually after high revving while the transmission is slipping)

My big question…. Is the VSS sensor causing my transmission to slip, or is the transmission slippage causing the VSS codes and temporary speedometer inoperability? :suspense: :suspense: :suspense:

Obviously, one fix is going to be much easier and far less expensive than the other so I'm really hoping to find out that a bad VSS sensor would cause my transmission to slip like that.

Any opinions and information would be greatly appreciated.
 

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Re: 93 Coupe - Tranny or VSS Problem?

sounds like one of the front wheel speed sensors are bad, IIRC they are the same as the ABS sensor, so I would replace that.

How is the trans fluid? have you changed the fluid and filter lately?
 

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I am no tranny expert but judging from the code, I would guess the VSS is causing the problem.
 

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Re: 93 Coupe - Tranny or VSS Problem?

Sorry, I failed to mention in my 1st post that trans fluid & filter were changed last year and fluid level is OK.
 
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