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Old Sep 11, 2011 | 10:28 PM
  #11  
xjarhead69's Avatar
xjarhead69
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From: Leesburg, IN
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Originally Posted by td123104
I have a 96 ram1500 with a 3.9L. it fires up fine, and runs good until it warms up. Then it starts spitting and sputtering, backfiring, and bucking. Sometimes it stalls coming to a stop sometimes it doesnt. I changed the stator but that didnt do anything. the scaner calls for a camshaft position sensor but it doesnt have one. thanks for any help i can get.
This was taken from the 96 service manual available for download in the Faq's section here.

CAMSHAFT POSITION SENSOR—3.9L/5.2L/5.9L
ENGINES
The camshaft position sensor is located in the distributor
on all engines.
The sensor contains a hall effect device called a
sync signal generator to generate a fuel sync signal.
This sync signal generator detects a rotating pulse
ring (shutter) on the distributor shaft. The pulse ring
rotates 180 degrees through the sync signal generator.
Its signal is used in conjunction with the crankshaft
position' sensor to differentiate between fuel
injection and spark events. It is also used to synchronize
the fuel injectors with their respective cylinders.
When the leading edge of the pulse ring (shutter)
enters the sync signal generator, the following occurs:
The interruption of magnetic field causes the voltage
to switch high resulting in a sync signal of approximately
5 volts.
When the trailing edge of the pulse ring (shutter)
leaves the sync signal generator, the following occurs:
The change of the magnetic field causes the sync signal

voltage to switch low to 0 volts.

Dave
 
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Old Sep 11, 2011 | 10:56 PM
  #12  
aim4squirrels's Avatar
aim4squirrels
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From: DFW, Texas
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He's only been waiting 4 years for that answer, and finally xjarhead69 comes along. LOL.
 
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