GolfGTIforum.co.uk

Model specific boards => Golf mk4 => Topic started by: woolmer1968 on 16 December 2010, 15:22

Title: Help please
Post by: woolmer1968 on 16 December 2010, 15:22

my mk4 1.8 GTI 1999 has a couple of problems. It starts fine from cold in the morning, after driving for half an hour or so i stop. when i go back to the car 10-15 later it will not start, the battery just turns the engine over but will not fire up. after several attemps it splutters to life and starts reving itself between 2k-3k, it does this for a minute or so and then setles down and i can drive off. what is going on?

the other problem is the drivers dool puddle light does no come on, interior light does not com on when drivers door is open, rear driver side interior light doesnt work and the light in the boot does not work.

can anyone help? cheers

Title: Re: Help please
Post by: Rico_GTi on 16 December 2010, 20:33

Hello mate, sounds like classic temp sender symptoms to me. The faulty part of the sensor tells the ecu that the engine is permanently cold, that leads to over-fuelling and a flooded engine. Have a look here:

http://www.golfgtiforum.co.uk/index.php?topic=88088.0

and

http://www.vwspares.co.uk/g4switches.php

Cheap part and very easy to change, worth a shot before anything else I'd say

Other problems sound like poss door and boot modules, have a look in the mk4 maintenance section, but as always check fuses etc first  :wink:

Title: Re: Help please
Post by: woolmer1968 on 17 December 2010, 08:45

thanks alot for that mate.

will that cause the car to rev itself?

Title: Re: Help please
Post by: alexd on 17 December 2010, 09:29

If the car thinks it's cold still it will over fuel, making your car do what your describing :)

Title: Re: Help please
Post by: jamie16v on 17 December 2010, 09:55

Quote from: woolmer1968 on 17 December 2010, 08:45

thanks alot for that mate.

will that cause the car to rev itself?

yes, this is like an automatic choke, when the car is cold (or thinks its cold) the ecu will tell the engine to rev higher and a little richer to compensate for the cold. as your temp sender is probably faulty and thinking the engine is cold it is adding too much fuel as already said and flooding the engine.

Title: Re: Help please
Post by: woolmer1968 on 17 December 2010, 10:45

thanks guys,

will try and change it at the weekend.

Title: Re: Help please
Post by: richw911 on 17 December 2010, 19:12

As said temp sender or maybe faulty fuel pump relay.

And the door fault : http://www.golfgtiforum.co.uk/index.php?topic=86403.0  :smiley:

Title: Re: Help please
Post by: woolmer1968 on 20 December 2010, 15:53

thanks for all your help guys, have changed the sensor (£5)!!!! was realy easy to do and now all seems fine