vw touran 1.6 FSI Problem please help

[Ronniee77]

Hello guys,

I am a new member and I hope one of you guys could help me out.

Vehicle details: vw touran 1.6 FSI / 2003 / 6 gear manual / petrol

The problem I am currently having is a starting and hesitation issue.

In the early morning the car starts without any problem but once it is warm it's a nightmare. I always have to press the gas pedal to keep the car on once I turned the key to ignite the car. When I drive and stop on red traffic lights I put the car in neutral and then it starts to shake and feels like that is going off at some point which it doesn't.
I also realised is drinks quite a lot of petrol and is very annoying. The yellow engine light is on too even though you deleted it.

However, a friend of mine he checked he car with a fault code finder and it said crankshaft sensor. I have bought the crankshaft sensor but I could not change so far because I do not know where the sensor is located. I only know the camshaft sensor which is right on the top of the engine.

Is someone able to tell me a bit more about the issue I am having ? Did someone have the same or similar issue and got it sorted out ?
Could someone tell me if I am able to change the sensor on my Owen or will it be impossible to reach the sensor to change ?

it would be helpful if someone could tell me where the sensor is loctaced.

i am looking forward to get an answer and a little help.

kind regards,

ronny

[Crasher]

We could do with a little more detail about the fault code than just crank sensor, there are quite a few variations on the code. The sensor is located around the back of the engine pointing through the block at a magnetic disc which is part of the rear crankshaft oil seal and is extremely difficult to change without removing the inlet manifold BUT removing the inlet manifold on a 1.6 FSI is a nasty can of worms that can turn and bite you. With the car on a lift it is just about possible to get to the sensor but take great care not to round out the head of the bolt or that will mean gearbox out. I would show you a picture but as usual Photobucket is broken and will not let me.

[Ronniee77]

We could do with a little more detail about the fault code than just crank sensor, there are quite a few variations on the code. The sensor is located around the back of the engine pointing through the block at a magnetic disc which is part of the rear crankshaft oil seal and is extremely difficult to change without removing the inlet manifold BUT removing the inlet manifold on a 1.6 FSI is a nasty can of worms that can turn and bite you. With the car on a lift it is just about possible to get to the sensor but take great care not to round out the head of the bolt or that will mean gearbox out. I would show you a picture but as usual Photobucket is broken and will not let me.

hello crashed,

thank you very much for your reply.

I appreciate what you are saying, however I cannot provide any other fault code as it was diy tested with cheap £150 fault finder.
Did you have ever had this issue heard before ? Could you tell me what it could be ? Is there any chance to narrow it down in terms of faults like sensor, or pumps, blocked pipes etc ... ?

I have read that quite a few people had the same or very similar issue.

it would great to get a little help.

kind regards

ron

[FLAPPERJACK76]

The way to check it really is to scope the crank sensor with an oscilloscope. It's a 3 pin sensor and terminal 2 will be sensor output voltage ..and well like Crasher said it's a real pain in the A to get to. I have done a few of these on 1.6 fsi engines so in my opinion an educated guess would be the crank sensor is duff. and the fastest reliable way of replacing them I find is to remove the inlet manifold ( like he said). Or you can do it underneath standing up with a mirror and if I remember correctly it's a 4 or 5 mm allen key socket and absolutely miserable to fit it . The bolt is at the back at an angle. Left of the block looking to the front of the car near the gearbox just above the sump pan.

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[Crasher]

Knowing the engine and reading your symptoms the first job I would be doing (other than a proper code read) is getting the locking tools out and checking the valve timing.

[FLAPPERJACK76]

Good point. The tolerance on these engines are ridiculously small. Iirc 0.01mm

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[Crasher]

I know what a sod these are for jumping a tooth if the engine is rotated anti-clock or no good or obvious reason. Why they didn't fit a stepped ratchet to the tensioner like on the EA888 engine God only knows, stupid stupid bad decision. A tiny piece of spring steel and a couple of machined grooves would stop this.

[FLAPPERJACK76]

Oh yeah. I remember now. It says in the instructions under no circumstances turn the engine anti clockwise. Another engine Volkswagen "dropped the ball"on.

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[Crasher]

On the EA888 it has the one way catch, why would it need to go backwards? It's just still penny pinching