After I finished installing the head and turbo to this vw passat I was ready to start it and I found out the crank sensor wasn't good either so I replaced it and the car started. It was running for almost two weeks with no issues but yesterday it just stopped on a freeway exit. I checked for gasoline and I have enough pressure then I checked for sparks and only one coil pack has spark. Does anybody heard about this

The spark drivers in the PCM may be bad--it's not common, but it does happen. Check for codes, before doing anything else. It may be something as simple as a bad camshaft position sensor. Be sure to test all under hood and under dash fuses with a test light or multi-meter. Clean all grounds, including to the PCM.

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Originally Posted by TxGreaseMonkey

The spark drivers in the PCM may be bad--it's not common, but it does happen. Check for codes, before doing anything else. It may be something as simple as a bad camshaft position sensor. Be sure to test all under hood and under dash fuses with a test light or multi-meter. Clean all grounds, including to the PCM.

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Is the PCM different that the ECU? If so where can I locate it. I know the ecu is under the windshield and the wiper motors also how many grounds does the car have. I have my scanner and after work I am going to check it because I left it at a parking lot

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Originally Posted by Socalstarter

Is the PCM different that the ECU? If so where can I locate it. I know the ecu is under the windshield and the wiper motors also how many grounds does the car have. I have my scanner and after work I am going to check it because I left it at a parking lot

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One more thing. What happen if the drivers are bad? Is there any way to fix them? Do I have to buy a new PCM?

A PCM controls the automatic transmission, as well as the engine. PCMs/ECUs are often remanufactured. Remanufacturing is frequently chosen, to eliminate security system problems and to save money. If the drivers are bad, the PCM/ECU needs to be remanufactured or replaced. Disconnect the negative battery cable and try cleaning the PCM's main ground. Take it down to the bare paint, if necessary. Other grounds are where the negative battery cable attaches to the fender and the strap/cable goes to the engine. You need to just check out your car.

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Originally Posted by Socalstarter

Is the PCM different that the ECU? If so where can I locate it. I know the ecu is under the windshield and the wiper motors also how many grounds does the car have. I have my scanner and after work I am going to check it because I left it at a parking lot



One more thing. What happen if the drivers are bad? Is there any way to fix them? Do I have to buy a new PCM?

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I have a code p0010 tx. Im checking the solenoid and it is soak with oil

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Originally Posted by Socalstarter

I have a code p0010 tx. Im checking the solenoid and it is soak with oil

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Is possible that a faulty solenoid does not let the car start? I checked the crank sensor, cam sensor, troatle body sensor, all ghecoil pack connections and the coil packs and all of them read good ( resistance ) I removed the actuator over the cam chain cover and oil comes out by the connection making it soak I inspected every single fuse under the dash and the hood and every one has resistance I also removed the ecu and cleaned the connections using circuit spray cleaner.

Sorry, I am not familiar with that solenoid. Sounds like, however, you are on the right trail. Again, make sure you only use the proper full synthetic oil in that turbo engine.