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1994 Dodge Dakota Question: running ruff

 

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dreamrider80, 3.9L V6, Coos Bay, OR, April 02, 2011, 20:14
 Rookie

have a real bad motor mount and thinking maybe the crankshaft sensor might be bad cause it runs good and then sometimes it run ruff! have changes 2 injectors the timing chain and gears and diatrubuter run out of money have know way to g=have it dianogest,could it be the brain box it was changed when it was wreacked 5 years ago and was a used part!

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  • Answer #1

    April 07, 2011, 12:31
     Master

    You mentioned that the distributor has been replaced. Because of this i would look in this area first. The camshaft position sensor is located in the distributor on all engines. Base ignition timing is not adjustable on any engine. Distributors do not have built in centrifugal or vacuum assisted advance. Base ignition timing and timing advance are controlled by the Powertrain Control Module (PCM) Because a conventional timing light can not be used to adjust distributor position after installation. The Camshaft Position Sensor will have to be (RE-SYNCED) with the Crankshaft Position Sensor. This can be performed in a matter of minutes by your local dealership or qualified Technician.

    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.

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    Visitor, April 10, 2011, 21:19

    thank you for the good infirmation! it makes a lot of sinces!

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