Golf 2.0L Starting problem

[bruce93]

Hi Guys.

Yesterday I was driving my car and everything was fine.

I got home and planned to go out in about 30 minutes after getting home but when I got in my car to leave I went to start the engine and the engine would turnover but not actually start. I called my mechanic Borris from Volkscare but he's closed, so I called Dean from Volkspower and he said to wait an hour and it might start. His advice was correct it did start. But I didn't ask what could be the cause of the problem.

Then today the same thing happened but I had only stopped for about 2 minutes. Left it for an hour and came back to it and it started up as if nothing had happened. At this stage I think it's electrical due to the fact that it happens and then after a period of time something resets and allows it to start. I'm just not sure what but definitely thinking a relay at this stage.

Just wondering if anyone has had or heard of a similar problem and if anyone has any suggestions what it could be?

Thanks,
Bruce

[Lito]

my money is on the coolant temp sensor mate. will cause bad economy and hot start problems

[bruce93]

Hi Lito.

Thanks for that input. I think you could be right as I went for a drive tonight and it actually died on me this time and wouldn't start untill the temperature dropped to about 75 degrees. I had an OBD scanner with me but it wasn't and isn't throwing any codes.

I've had a look for the sensor and think I've found it. It should be just a matter of taking out the faulty sensor and plugging in the new one right?

Thanks,
Bruce.

[bruce93]

Hi guys.

New sensor arrived today so I put it in and started the car and everything was fine. Even was idling smoother. Took it for a drive and once it got over 95 degrees the car did a jerk, the check engine light came on and once I had turned it off and tried to start it again it wouldn't start so back to the original problem?

Any help is greatly appreciated!

Thanks,
Bruce.

[Lito]

man that sucks, sorry to hear its still giving you grief. did you get a green top coolant sensor? are you able to get it scanned the fault code for the CEL may give you some clues

[bruce93]

Hi Lito. Yeah it was a green top one.

I just went and started it and it's back to the rough idle but I did manage to scan it as well! It gave me the error of 16705: Engine Speed Sensor ( G28 ) : Implausable Signal


Thanks,
Bruce

Edited