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1995 Dodge Ram HESITATION AT HIGHWAY SPEEDS

Tiny
ASHEPPARD
  • MEMBER
  • 1995 DODGE RAM
  • V8
  • 4WD
  • AUTOMATIC
  • 120,000 MILES
At approximately 60 mph on the highway my truck will hesitate under light loading. Power train will buck quite noticeably. Not sure if this is a power train issue or an electrical issue. This will occur while the accelerator is transitioning from power or to power. I have a 5th wheel camper and while towing this situation is greatly exaggerated.

I had an EGR code (32) on the PCM, so I changed the EGR valve. This code has not returned. I also have a 37 code, but I cannot find that code other than on a diesel engine. I have replaced the plugs, wires, distributor, cam pickup, and rotor to no change.

Any ideas?
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Saturday, July 24th, 2010 AT 4:12 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi asheppard, Welcome to 2carpros and TY for the donation

Check the fuel pressure if its within specs if okay start by testing the throttle position sensor and the manifold absolute pressure sensor/intake air temperature sensor, get back with some testing results we start here be advised this is gonna be a tough one to deal with so be patient I'm not with the vehicle, wish I was
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Saturday, July 24th, 2010 AT 6:21 PM

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