Dustin Gebhardt
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After 12 days into our 17-day vacation road trip, my ‘07 decided to cause problems as we neared Yosemite. The odometer had rolled over to 300k a few miles ago. The temperature gauge dropped to zero, I got a low temperature warning, the AC turned off, and my transmission shifting went nuts (delayed shifts, hard jerks). I always travel with a computer and ForScan, which showed my a P0128 fault, and trans shift error. Since parts were very limited there, we pushed on to Las Vegas and parked our RV at Circus Circus. Now with better cell reception, I figured that I would attempt to replace the CHT sensor (cylinder head temperature), but I couldn’t seem to locate it on the engine. I removed the alternator, hoping to find it on the crossover or in the intake valley near the front of the engine. I ended up seeing it way back in the intake valley, passenger side between the rear two cylinders. Oh boy. With my limited traveling tool set I started to pull the fuel rail and intake off. I ended up finding that the wiring harness for the CHT was pinched and melted between the intake manifold and the head. See photos. You can clearly see the clean areas on the rear intake port that match the squished pattern on the intake gasket and the wiring harness. 2 days later (the new harness was shipped from another dealership) the Expy was put back together and working normally.
note that this was a genuine Ford reman engine from 2013 that the previous owner had installed. I don’t know how many miles are on the actual engine.
note that this was a genuine Ford reman engine from 2013 that the previous owner had installed. I don’t know how many miles are on the actual engine.