HOW TO USE FORD IDS TO FIX NO CRANK EGT SENSOR PRO LEM DRIVERS
You CAN do it with some a few tools beyond a normal tool set such as Torx head wrenches, Allen keys, triple square drivers (looks like an inverted 12 pt socket) and some rachets with extensions and universals are always great. Sadly, this replacement DOES necessitate removing your DPF. It did give sporadic alarms and Check Engine Lights before it stayed on permenantly. Looking at the probe when it was out, I could see the sensor inside it's cage broken off, however mine was reading a high temperature, not low. With all that said, I have replaced my first temperature sensor (pre turbocharger) that failed on my car at 56k. The reason VW uses this style EGT probe is for very fast response to reading changing temperatures. All the systems I've ever installed on trucks, or used in industrial applications are fully enclosed and do not look as vulnerable. I'm unfamiliar with other manufacturer's stock exhaust temperature sensors, but VW uses an open type EGT probe that has an exposed element protected by a cage. I am driving to Florida in one week, and don't think I will do any repair before I come back. The dealer kept the report to discuss with VW so I don't remember the fault codes. The first sensor is before the DPF, and maybe flow restriction is causing the difference in temperature with the other sensors. My problem is that I'm not really sure the first sensor is not reading properly and that it needs to be replaced. Estimate: 6 hours labor ( not easy to work in that area) - cost about $900 (sensor costs $300). Their recommendation: replace the 1st sensor. Their diagnostic: 1st sensor 150C (approx 300 F), the other three exhaust sensors in the low 200F range - the temperature difference is what triggers the CEL. Apparently, the first exhaust temperature sensor is out of range, and this is what triggers the check engine signal. Went to the VW dealer to check the fault code. Check engine light goes on during the day, but when I start the car in the morning, usually the CEL is off. Last week, got a blinking glow plug signal for a short while, then no more. Not a glow plug issue because car starts easily. Three weeks ago, the check engine light went on, then off, and on again. 9 Months ago, had the exhaust flap replaced.