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Need some serious help please (sensor/starting issues)

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Recently had a issue with the 'engine speed sensor' which caused cold starting issues. Called the local TPS, and said I needed the crank sensor.. Brought that, had it changed..

Now the car starts in the morning, not perfect, but starts, but once warm the car struggles to start, cranks a good few times before starting:-

Been on VCDS, and now gives these faults..

19463 - Camshaft Postion Sensor (G40). P3007 - 35 - 10 - No signal - intermittent

17911 - Load Signal From Alternator Term. DF. P1503 - 35 - Implausible Signal - Intermittent.

17663 - Engine Coolant Temp Sensor (G62). P1255 - 35 - 10 - Short to Ground - Intermittent.

Temperature needle has been a bit erratic, very high when starting, so that explains the Coolant Temp Sensor?

Could the garage have put the crank sensor in wrong? As I phoned them and have said theres only one way, it would be leaking a load of oil, and wouldn't start at all, if the crank sensor was in wrong?

Really need this sorted as its annoying the life out of me, Im a perfectionist when it comes to my cars, and I hate them having faults!!!! :@ :@ :@ :@ :@ :@

  • Author

BUMP

Coolant temp sensor will be the source of starting issues too. Particularly if its worse in certain circumstances

That's a camshaft position sensor fault not a crankshaft position sensor.

Also have a search for the DFM wire fault.

do all 3, sounds like a dumbass garage

If a camshaft sensor goes you get excessive crank time. This is because the camshaft sensor is used for quickfire cylinder recognition. Using the camshaft sensor it can detect TDC on quarter of a turn.

If the crankshaft sensor goes it don't start full stop.

Change the temp sensor as i imagine them to be cheap and will be one thing ticked off the list.

Camshaft position sensor can't be fit wrong unless you are extremely incompetent.

  • Author

had a look my self, there was some wires going into the plug, which connects to the crank sensor (engine speed sensor), someone has fiddled with it before, stripped back, possibly to check for a signal. unwrapped it, now starts first time perfect, test of time will be in the morning!

If fixed its on to TPS for a new plug and some new wires :)

  • Author

And yes the garage are idiots!

sounds good, cheapy cheap. were they shorting then?

  • Author

I think the wire just wasn't reaching the pin, like it was with loose, and with the vibration from the engine when it was turning, it would just catch.. well thats my theory

glad its sorted

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