Originally posted by Contourgirl:

But, reverse is still a problem, you have to rev it up to 2000 rpm's before you can go into reverse. They think it is computer related. They are making an appointment for this Saturday if possible.



If you have to rev the engine to 2000 rpm to get the CD4E to shift into reverse, it is NOT an electrical problem.

You can test this very easily.
Disconnect the Range Selector sensor on the top of the transmission.
Start the engine and shift into reverse.

If it doesn't go into reverse, its time to take the tranny back down again.
Something is binding in the valve body, and keeping the oil pressure from applying reverse.
That same binding can hold reverse, when you shift from reverse to drive,
and drag reverse while you are driving.
This will burn out some clutches if not fixed.

You don't need the PCM for Reverse. IIRC, reverse is a manual application, not electronic.

Pete... 2004 Mercury Marauder 300A Black Clearcoat/Dark Charcoal LEATHER DOB 10/31/2003 DOP 1/2/2004 www.mercurymarauder.net