On the drive back home this morning, the S3 light started blinking. Its the gear after D. What does this mean? Also the check engine light came on.

 

I just noticed the speedometer stopped working... Is the tranny done?

 

I do not know much about automatic transmissions, but I'll try to give you some ideas.

For your speedometer dying on you, it's possible that the speedo cable has worn away and isn't getting a signal. Or that one of your wires came undone. What year is your car? If your car stopped receiving a speed signal then this could have caused your ECU to become confused, causing the blinking light in S3.

This same problem, not receiving a speed signal, could have also caused your CEL to come on. Get the blink code and see where that leads you.

Does the speedo jump? Or not move at all?

 

My car is a 91'. My speedo jumps around from time to time. But it stopped workingat the same time the S3 light came on. How do I get the blink code? Thanks.

 

Here is the link on how to get the code. It's under the FAQ.

Do you know if you have a speedo cable coming from the transmission, or wires coming off a sensor?

 

I can not find the blue connector under the dash... I see no green cover... My car is a 91'. thanks for your help.

 

Ok I the jumped the connector and the CEL does not do the blinking code.... I was reading the manual and it said to look at the LED on the PCM. Where is the LED? I see no light... Can someone help me out....

 

Ok, Found out where to look... i got the code 4. crank position sensor... next step is to throw away the haynes manual thanks for the help guys....