95 N/A Engine code 42. Speed sensor no1 and transmission solenoids already replaced.

[Guest rwc]

I have a 95 supra N/A almost 300,000 miles. Never an issue with her until this one.

Symptoms are weird. The automatic transmission seems lost. It does not shift into the right gears when it is supposed to. Lots of clicking coming from underneath the car. (Probably the solenoids misfiring from getting the wrong message from the computer I think.) Accelerating from stopped it seems to start out in second or third gear so it hardly moves. Then it jerks a bit and gets into first. Even while cruising around 45 mph it will shift when it shouldn't. It revs, it jerks, its going to kill me! When the transmission seems lost you can hear the clicks coming from under the car, or maybe behind the dash. I cannot tell. She also stalls on me when going down hills. Note that half of the time she drives perfect. These problems seem to get worse as the car heats up from a day of driving around town.

 

I am pulling an error code 42. No.1 Speed sensor.

 

I have had the transmission solenoids replaced twice, thinking they were getting shorted out. I also recently replaced the no1. speed sensor on the transmission. They say that there could be a short anywhere in the No.1 speed sensor circuit because the actual sensor was obviously not the problem. I don't even get what that means.

I am sick of throwing money at this problem. Any insight, ideas, or past stories would be greatly appreciated. Even if I knew what parts of the car are included in the same circuit as the No.1 speed sensor at least I would have some place to start looking.

 

Probably unrelated but my tail lights work fine but my tail light warning by the odometer comes on when I turn my lights on...

[Guest bigtaws]

I have a similar problem. I've replaced the rotor arm and distributer. New spark plugs. I can't get the fault to blink on the dash. Any help would be much appreciated.

[scott87]

Have you had the car delimited/clocks converted ?

[Digsy]

Unless its a botched speedo conversion or delimiter as mentoned above it'll probabaly be the odometer circuit board.

 

See if you can borrow someone else's for a little while, swap it over and see it the error code and other symptoms go away.