V5 Bora not starting.

[selexon]

Hi All,

Had an issue with the bora this afternoon. After driving hm from wk I parked the car in the driveway went inside for about 20min came back out and it wouldnt start.

So it kicks over ok starter sounds strong. Batt Volt is 12.85 so okish.
I can hold it on start for 15sec or so and then it sligthy catches but then cuts out.

To me it sounds like a fuel supply issue but not sure. As I havent felt any surging before this.

Has anyone experienced something similar?

Should I look at possible knock sensor or another sensor?



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[Umai Naa!!]

Get it scanned, and see what it says.

Possible crank sensor failure.

Does the fuel pump buzz when you unlock it and open the driver's door?

[selexon]

Get it scanned, and see what it says.

Possible crank sensor failure.

Does the fuel pump buzz when you unlock it and open the driver's door?

Actually didn't check to hear the fuel pump. Will check the pump and fuse.

Getting scanned will be an issue prob have to get a mobile mec out to check.

Thanks for the info.

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[selexon]

So just got back home from dinner and jumped in the car turned the igintion on and could hear the fuel pump prime turned it over and it started 1st go. Go figure!!! [emoji848]

Wondering if it was just vapour lock. Lol

Or just to let me know she hit 111000

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[Umai Naa!!]

Possibly a crank sensor. When they get warm they fail. When they cool down, they work again.

Needs to be scanned to confirm.

[selexon]

Possibly a crank sensor. When they get warm they fail. When they cool down, they work again.

Needs to be scanned to confirm.

Thanks for the info. One of the lads at work have a scanner that they think should work so ill see how it goes.

Ironic that im employed indirectly by VAG and have 20 technicians at wk but they are all heavy diesel and we have our own factory tools but nothing for automotive.

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[jmcc]

Hey sounds alot like my golf, was crank or cam sensor I replaced both and it worked. It got steadily worse eventually leading to random shut-downs while driving

[selexon]

So connected the Autel Scanner and ran the diagnosis test.

All that came back as an error code was the coolant sensor. So not sure that the temp sensor would stop the car from starting.
Anyway ill that the opportunity to throw a new sensor and coolant in over the weekend ready for summer.

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[Umai Naa!!]

It can happen on this era VW, but it's not common.

[jmcc]

even when I had a coolant sensor warning because I was refilling after flushing it, the car still started and ran. But different engine so maybe

[selexon]

I brought a new PAT coolant temp sensor (updated green version) from burson 3 weeks ago. Never got the chance to install it as have been away with the kids for holidays.

So what do you know it cut out again in the driveway this afternoon as we were about to leave for dancing. So took the chance to replace the sensor. Moments like this I have to thank my tiny office hands as its a bastard to get to even after moving a few of the surrounding cable harnesses.

As soon as i turned the ignition on I could here the circulation pump working which is a good thing as I never heard it working before. And she started 1st go to so happy as larry.

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