RPM gauge will drop down to zero

Tiny
ADOLFOCHACON
  • MEMBER
  • 2001 DODGE RAM
  • 145,000 MILES
Sometimes when my truck is idling the rpm gauge will drop down to zero and the engine bogs. This also happens while driving in city where I have to constanly shift gears and only gives out about half of power. This lasts maybe 2- 5 minutes.

5.9 cummins
6 speed
All lights in truck dimmer
loss of power especially when towing
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No
Friday, January 6th, 2012 AT 2:26 AM

3 Replies

Tiny
RIVERMIKERAT
  • MEMBER
Have it scanned for codes.
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Friday, January 6th, 2012 AT 3:36 AM
Tiny
ADOLFOCHACON
  • MEMBER
I did and it gave me a bunch including that the timing was wrong. If it was off wouldnt it do that all the time? I had to drive it about 18 hours from pennsylvania to texas and it was fine at normal highway speed but getting on the highway was when it happened
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Friday, January 6th, 2012 AT 3:43 AM
Tiny
RIVERMIKERAT
  • MEMBER
Not necessarily. A vacuum leak would only have affect at idle.
A large number of codes usually means a connector issue or a PCM issue.
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Friday, January 6th, 2012 AT 4:06 AM

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