1990 Civic DX 1.5 lt. engine with auto transmission.

Engine power seems to have been disconnected from the tranny, I'm able to put the stick into every gear, but engine just revs and no power to the wheels.

When the shifter is in "D", and engine is reving, the speedo would register speed, but no wheel/car movement.

Is the tranny completely dead?

Is there a cable that connect the shifter stick to the tranny that's busted?

What gives?

Please help..

TIA.

 

Is the tranny fluid topped off?

 

The speedo going up shows that most all of the parts in the transmission are actually turning and the car should be going. But the power isn't getting to the wheels. So check the axles. Look for an axle popped out of the transmission, broken CV joint, or broken axle.

 

As usual, Mk demonstrates a keen attention to the details. Follow his advice and abandon mine.

 

I've just changed the tranny fluid within the last 2000 miles, topped off to proper level, no leak.

I did replace the CV axle, too.. Is it the driver's side or passenger side that have the speedo connection?

 

Not sure. The speedometer cable appears to connect on the passenger side of the transmission.

With the front end on stands, what happens if you turn one front wheel by hand with the transmission in neutral versus in gear? Does the other wheel turn? Do you hear a grinding noise? While you are under the car, also carefully inspect the axle where it inserts into the transmission.

 

The speedometer is driven by the center differential gear, or the internal output shaft of the transmission. It responds to the net speed of both wheels.

With both wheels raised off the ground and the transmission in park, turning one wheel by hand should make the other one turn in the opposite direction. Or if you only have one wheel of the ground, it should not be able to turn with the transmission in park. Look at the axles closely and see where the motion is lost.

Having just replaced an axle, it is quite likely that it was not fully seated and has popped out of the transmission. You will see a larger gap between the CV joint and transmission case and also likely have transmission fluid leaking around the axle.

 

It will be a few days before I get to determine this CV axle problem... I will keep informed with updates... Thanks

 

Sure enough, the CV axle from PepBoyz is broken, now just need to find to return the braken one and replace the new one..
Thanks.