TCU Problem

[RMFOR2]

Can anyone tell me why, while i'm driving or slowing down my yellow TCU and engine check lights come on at the same time ? when they do come come on I can also hear a click from behind my driver's seat.

 

[Jett]

Maybe your main relay is making a poor connection and almost causing the car to turn off before the connection "catches" and allows the car to continue running? This is just a guess, but it is pretty easy to remove the relay, apply a soldering iron to the cracking joints to reset them, and replace the relay. Cost to do this repair - US$0

 

[banditt]

my car would take off and then pause (wont go over 20mph) and then catch speed again! i took it to larry and he disconnect it and zoom i went! larry can help.:smile:

 

[rbirling]

This sounds like the ignition switch to me. Try jiggling the key a little while it's running and see if you can reproduce the symptom. I don't think the main fuel relay can cause this problem.

 

[nsxtasy]

When I first read the title, I thought you had a problem with Texas Christian University. Then I realized you were referring to the Traction Control System, but with a weird spelling. :biggrin:

There are some problems which trigger the TCS light as well as the CEL. As Larry B has noted, ignore the TCS light, and check the codes for the CEL.

This happened to me recently when my oxygen sensors needed replacement. Both lights triggered. I replaced them and neither light goes on now.