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1997 Dodge Ram Voltage drop

Tiny
SCORPION63
  • MEMBER
  • 1997 DODGE RAM
  • V8
  • 4WD
  • AUTOMATIC
  • 165,000 MILES
On my 1997 Ram 1500, When the vehicle is in park and idleing, The volt meter reads 14 volts, When I have the lights on and put it in gear, the volt meter drops (Charge light comes on). My idleing RPM's is about 750. In gear RPM's drops to about 350-400. If I apply the accelerator and boost RPM's back to Idle status (in gear), Volt meter returns to normal. Is this caused by a bad TPS (Throttle Position Sensor). I have replaced the altenator and the computer containing the infomous V-regulator (good job Dodge).
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Monday, February 8th, 2010 AT 4:51 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Have you ever had the electrical system checked to see how much of a load is applied to the alt with the lights on? Does the same thing happen if you turn on a different electrical component such as the blower motor?
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Monday, February 8th, 2010 AT 7:00 PM

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