I have a 2001 Dakota with a 3.9L with 165k miles. I just had the transmission rebuilt this week (complete overhaul including replace torque converter). I get it back and it is vibrating badly in reverse.
In park, in drive and anytime you are moving, it is FINE. Put it in reverse and the RPMS drop to 450-500 and it feels just like the engine is misfiring. The transmission man says it is engine misfire.
Why isn't it misfiring ANY other time?
The engine doesn't know it is in reverse, it only knows a load is on the engine. And if I put it in Drive, it does not shake at all. Smooth as butter and idles at 700-ish RPM.
It was not doing this before trans overhaul.
I put new Champion plugs in it just to satisfy transmission man. I sprayed the plug wires with water (actually I soaked them down for several minutes) with no arcing.
What could be going on?
Can this thing be misfiring JUST IN REVERSE?
Could something in the transmission be causing vibration that is being mis-interpreted as misfire only in reverse?
I do not believe the engine is misfiring-it is simply too smooth all of the rest of the time…
Help!
In park, in drive and anytime you are moving, it is FINE. Put it in reverse and the RPMS drop to 450-500 and it feels just like the engine is misfiring. The transmission man says it is engine misfire.
Why isn't it misfiring ANY other time?
The engine doesn't know it is in reverse, it only knows a load is on the engine. And if I put it in Drive, it does not shake at all. Smooth as butter and idles at 700-ish RPM.
It was not doing this before trans overhaul.
I put new Champion plugs in it just to satisfy transmission man. I sprayed the plug wires with water (actually I soaked them down for several minutes) with no arcing.
What could be going on?
Can this thing be misfiring JUST IN REVERSE?
Could something in the transmission be causing vibration that is being mis-interpreted as misfire only in reverse?
I do not believe the engine is misfiring-it is simply too smooth all of the rest of the time…
Help!