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Old 12-25-2014, 06:48 PM
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camshaft connector replacement

So I recently was driving my jeep and all of a sudden the oil pressure started going crazy (down to 20, back to 60, then settling around 40) then started to idle erratically at a stop and seemed like it wanted to die. So it pulls a p0320 crankshaft sensor circuit code. Not knowing any better I buy a non oem crankshaft sensor and camshaft sensor (knowing that they normally need to both be replaced at the same time). Here's where it gets fun. So I replace both sensors and my jeep cranks but won't start. I get back under to take a peak and the camshaft sensor melts my connector and pigtail! Can anyone give any insight as to how I would go about repairing that or where I can find a reliable connector/wire kit?? As far as the oil pressure I've deduced that my sending unit is shot and there is definitely oil leaking out of it. Also I will only ever buy OEM electrical parts from now on. What a mess!

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Old 12-25-2014, 09:10 PM
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Re: camshaft connector replacement

Welcome to the garage.
Strange that the wiring started to melt, there should be a fuse to protect the circuit.
Donīt know which engine you have, but Rockauto.com has connector repair kits for many of the connectors. I saw that they have connectors for the crank and cam sensors for both 4.0 and 4.7.
The oil pressure sending unit gets 5V from the PCM and this 5V is also used to feed the crank and cam sensors, the MAP and TPS. So when one of the components shorts out, the 5V is lost and the engine will not start.
Still strange though that the new sensor seems to have an internal short.
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Old 12-26-2014, 03:09 PM
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Re: camshaft connector replacement

Yeah its pretty unfortunate that it happened the way it did. I just ordered the parts and we'll see how it goes. Im hoping its something I can do in the garage, thanks for the info!
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