Crank Shaft Sensor Failure?
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Joined: Oct 2020
Posts: 2
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06 Dodge 1500 with 5.7 hemi 153,000mi
My pickup was doing the same thing. It threw a code for faulty crankshaft sensor or timing fault and multi cylinder misfire. It didn't want to start until I cleared the codes, started up and ran fine until the check engine light came back on. I went the cheap path first, replaced the sensor. Fixed the problem for about a month. Then last Friday it didn't want to start again, started throwing crankshaft sensor code along with multi cylinder misfire, engine started chugging on the highway. I cleared the codes, got it to my shop. Had time this morning to tare into it. I was convinced the timing chain was needing to be replaced but I ruled out rather quickly. So I checked the brand new crankshaft sensor, it was fine. I decided to check the wiring going to the sensor. That harness comes down the front of the engine makes a 90° turn towards the back of the engine, goes behind the oil filter right along the top of the oil pan. At that 90° turn, the wires were rubbing on the block and were bare, touching each other and the block. Cut out the bare sections, spliced, heat shrinked and plugged everything back in. It started right up, ran rough and kept throwing the multi cylinder misfire code P0300. Cleared codes again and took it for a 15 mile test drive. Check engine light turned off halfway through and so far it seems fine. Minor electrical problems get over looked while looking for something bigger. So far, I'm lucky, this is the only problem my pickup has given me. I hope y'all are able to figure your problems out.
