Small "bump" when accelerating in 1st and/or 2nd gear - Ford Ranger Forum

HighPlainsShifter · 04-21-2009, 04:52 PM

I have a 98 Ranger, 3.0L, 4WD, manual trans.

When I am accelerating in 1st or 2nd gears the truck often gives a slight bump. After 2nd gear it doesn’t seem to do this and I am in 2WD at the time (not 4WD). It is a lot more noticeable in warm weather. My thoughts are that it is the rear differential slipping and I may try using a friction modification additive. Any ideas on other causes or fixes?

TWT51 · 05-17-2009, 06:25 PM

is this automatic trans ? probably low on transmission fluid or needs to time for filter and fluid change on transmission

**Jon** · 05-18-2009, 11:31 AM

I've had similar issues and it was the transmission fluid, as TWT51 said above.

lovemyranger · 11-26-2009, 09:12 AM

Quote:

Originally Posted by HighPlainsShifter

I have a 98 Ranger, 3.0L, 4WD, manual trans.

When I am accelerating in 1st or 2nd gears the truck often gives a slight bump. After 2nd gear it doesn’t seem to do this and I am in 2WD at the time (not 4WD). It is a lot more noticeable in warm weather. My thoughts are that it is the rear differential slipping and I may try using a friction modification additive. Any ideas on other causes or fixes?

check and make sure one of the engine or tranny mounts ar not broken.

04-21-2009, 04:52 PM	#1
HighPlainsShifter Junior Member Join Date: Apr 2009 Posts: 12	Small "bump" when accelerating in 1st and/or 2nd gear I have a 98 Ranger, 3.0L, 4WD, manual trans. When I am accelerating in 1st or 2nd gears the truck often gives a slight bump. After 2nd gear it doesn’t seem to do this and I am in 2WD at the time (not 4WD). It is a lot more noticeable in warm weather. My thoughts are that it is the rear differential slipping and I may try using a friction modification additive. Any ideas on other causes or fixes? Last edited by HighPlainsShifter; 05-26-2009 at 07:30 PM. Reason: Clarify what tye of transmission I have.

05-17-2009, 06:25 PM	#2
TWT51 twt51 Join Date: Apr 2009 Location: richardson texas Posts: 3	transmission is this automatic trans ? probably low on transmission fluid or needs to time for filter and fluid change on transmission

05-18-2009, 11:31 AM	#3
Jon Administrator Join Date: Feb 2009 Posts: 446	I've had similar issues and it was the transmission fluid, as TWT51 said above. __________________ *Jon* Have you registered??

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