I am trying to locate the input speed sensor on 2002 pt cruiser. I was having problems with over heating hookedthe fan to the lighter and now it wont change gears. I took it and got error codes p1490 , p1495, p0700. I am going to try changing the speed sensor but any ideas would be great.

 

Overheating may be caused by many different things besides the fan. The fan and lighter have nothing to do with the transmission, unless you screwed something else up in the process.
The input and output speed sensors are located on the front side of the transmission to the left of the torque converter. Remove the air cleaner box to get to them from above.
If you don't know what you are doing, you'll find it's much more economical to hire someone who does to actually fix the car.

 

no it was pretty straight forward hooking fan to lighter. drove it to get gas and suddenly it would not change gears. thru the internet we have found the cheapest solution is changing the speen input relay. I took one out and it was corroded pretty bad. if this dont help then I am just going to be at a loss. I dont have money to take it to a mechanic and I can work on cars it is just these cars seem to have alot of safe mode and over heating issues.

 

changed sensor car still in limp mode. I tested the power in the dcm and found that both fan relay's and the eatx have no switch power. I am trying to track wires to see if there is a cut wire or if there is a way to get power back on relay's. I looked in owners manual and can not find a wire diagram does anyone have ideas , pictures or a new car for my very upset wife?

 

P1490: Low speed fan control relay circuit: An open or shorted circuit is detected in the radiator fan relay control circuit. Could be a bad relay, could be a wiring problem, could be a bad computer.

P1495: Leak detection pump solenoid circuit: The state of the solenoid circuit does not match the PCM's desired state. Could be a bad circuit or bad leak detection pump.

P0700: This is just a generic code telling you that there are additional codes related to the transmission stored in the computer and you will need to read those additional codes with more sophisticated equipment.

 

ok thanks for helping .. this car is starting to be a nitemare and I am notsure it isnt causing me nitemares..not good for the husband when wife's car dies being I was only trying to hook her fan up.PS aybody with fan issues need to go have t fixed right.