Q: SUV moves too slowly in reverse and when accelerating; dull clump sound in Drive

asked by on

When I put my minivan in reverse, it only slowly moves; even when the accelerator pedal is pushed. When I shift into Drive, there is a dull clump noise. What does this mean?

The reason you cannot move very fast in the reverse setting is you have an internal leak in the transmission valve body. The clunk is the valve body moving back the other way, and the clunk is the transmission engaging.

The problem is internal of the valve body; leaking fluid pressure between gears. The problem may get to the point where it will not move, so a transmission mechanic should test the pressures and diagnose and repair it soon, before it will not move.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. SUV moves too slowly in reverse and when accelerating; dull clump sound in Drive

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Horn keeping blowing when key is taken out ignition.

The issue is with the security system on your car. Try disarming the vehicle by holding down on the unlock function to the key fob. If the locks on the car do not work while the horn is sounding, then...

Q: High rpms, doesn't gain speed

Hi there. Sounds like the transmission is either slipping or the torque converter is failing. Try taking the vehicle for a test drive and manually shifting the transmission. If the engine operates normally, then the transmission valve body has an...

Q: power locks won't work on 2003 mercury mountainner

Hello. Thank you for writing in. The first test needs to determine if the power locks work from any of their switches. If both front door panels and the key fob do not unlock the vehicle, then your issue is...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...