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MDS/VVT system issue

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Old May 25, 2024 | 04:54 PM
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jimchappell50's Avatar
jimchappell50
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Default MDS/VVT system issue

2009 Ram 1500 5.7L 2wd TRX 283k

My manifold cover bolts were loose and I did not realize it for a long time. By the time that I figured it out, the front corner by cylinder 1 had melted a bit I fixed that with JB Weld.

Oil had gotten to the jumper harness that wires the MDS/VVT system together and it destroyed a good bit of insulation on the harness. I can see bare conductors everywhere. I am sure that there are areas of the harness that are damaged that I just can't see given the way that the wires are all run together.

I tried to repair some of it with electrical tape but it is still acting up. The harness, part # 4801719AB, is discontinued. I ordered one off of amazon for a 2010 ram but the connectors for the 4 crankshaft position sensors do not fit the sensors.

Does anyone know if I can cut off the connectors from the new harness and pigtail the old ones on and have it work properly?
Or, if I buy 4 crankshaft position sensors for a 2010 ram, will they fit my 2009 and can I then just use this harness?

Not sure what to do here as it is slowly becoming oblsolete.

Any help or ideas would be appreciated.
 
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Old May 28, 2024 | 10:18 AM
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Are you confusing the MDS solenoids for something else? There is only ONE crank sensor and only ONE cam sensor.
 
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