For the last year I have been having weird tranny issues. Every three or four months randomly when I am driving my tranny will start acting funny. It is like it is searching for the gears (feel through petal). Then it wont catch in a gear (it is random gears 1-3 no preferrence).

Then I will slow to a stop, turn off the car, and start again and it will be sort of fine. For that day the downshifts coming to a stop are pretty rough from 2-1. Also, the engine will throw a code speed sensor malfunction. After the car sits overnight the next day no problems and the ses code will stay on for like two-three days then go away.

I am not sure if it is a tcm problem, speed sensor, or a random thing that I shouldnt worry about. I search and couldnt find anyone else with a similar problem any insight? Btw, I have a 2000 auto. The tranny fluid is only about 15,000 miles old and the level is perfect. Thanks in advance

 

Sounds like you need a new vehicle speed sensor.

 

...or a new Mass Air Flow Sensor (MAF)

 

Does the spedometer act funny too?

 

sounds like a TCM problem to me

 

i would start @ MAF,.. very common that a baf maf will make the tranny act all f'd up,.. pretty cheap start for 100 bucks or less DIY

 

What is the code you are getting. I'll look it up later for you and list possible causes.

 

I don't know the code off hand since it isnt putting it out right now. I am suspect a TCM problem more than a maf. When a maf affects a tranny it is always coupled with a power loss, or not being able to cross a cretain rpm range. That isnt my problem.

Furthermore, I suspect TCM over maf because of how it is shifting afterwards. I have never heard of a maf problem causing rough downshifts. I always clean my maf every 10000 miles or so and another thing to remember is I dont have the fragile 02-03 maf.

I have the original tcm I know there was a TB issued with some of the firmware upgraded. What model TCM should I be looking for?

 

Any recommendations on an updated TCM model. I am kinda strapped for cash. Also, remember mine is a 2000 auto. Thanks