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So my issue is the needle drops when I turn heaters on
Both thermostats have been done and temp sensors using genuine parts, while driving the needle doesn’t drop, the needle will only drop at idle with heaters on
I got the same issue.
Anyone ? Oher ideas than Thermostat or temp sensor ?
Its fair to say that there are many 2.0 tfsi's bombing around with high mileage on the original chains. The 400k plus GTI on here has never had the chain and associated components replaced.
That said, mine is sitting at a wild -17°. I've an original camshaft position sensor inbound. Obviously it's not a true value or it would be running as lovely as it does for it's 155k.It checks how much the cam phaser is adjusting to keep the engine in time. As the cam chain stretches over time the phaser takes up more slack to a point where it can't and you start to get hard starts and/or chain rattle noises at start up etc. You can see how many degrees off 0 it is making an adjustment. Up to 3 is usually fine, but then 4 to 6 you will be getting a lot of noises (consider sorting it very soon) , then above 6 you are a ticking time bomb (change ASAP if you want to keep the car)...........when checked on a warmed up engine.
The chain starts to show its age from about 80k to 100k depending on how well the engine has been maintained and driven. The phaser also wears out and struggles to keep oil pressure to maintain the adjustment. I changed my chain and tensioner 8 years ago but not the phaser and the chain had to be changed again recently due to the worn phaser prematurely wearing the chain (it was on -3.0 degrees from 0 after 20k miles and 8 years)..........replaced it all now
