GolfGTIforum.co.uk

Model specific boards => Golf mk4 => Topic started by: sps on 10 August 2013, 21:19

Title: intermittent hard start on golf mk4 1.6 16v with the AZD code.??
Post by: sps on 10 August 2013, 21:19

the car is an early  petrol 2002 golf mk4 1.6 16v with the AZD code.

it intermittently refuses to start and then eventually starts after continuous cranking.

i notice this happens more often when the car is warm/hot.

the previous owner had the crankshaft speed sensor replaced and it had a full major service 3 yrs ago when the air filter,spark plugs,air filter,oil; filter and cambelt/waterpump were all replaced.

i note he even had the starter motor replaced.

no fault codes come up on vag.com

the car has done 75k miles form new.

what are the possible causes for this?

Title: Re: intermittent hard start on golf mk4 1.6 16v with the AZD code.??
Post by: mike1990 on 10 August 2013, 21:42

Engine temperature sensor?

Title: Re: intermittent hard start on golf mk4 1.6 16v with the AZD code.??
Post by: sps on 10 August 2013, 21:46

is this the same as the engine coolant temperature sensor or is it another one?
where is it located?

Title: Re: intermittent hard start on golf mk4 1.6 16v with the AZD code.??
Post by: mike1990 on 10 August 2013, 21:58

Yes it's the coolant temperature sensor

Red circle

(http://i670.photobucket.com/albums/vv67/mike19903/rdgsd_zps1424283a.png)

Title: Re: intermittent hard start on golf mk4 1.6 16v with the AZD code.??
Post by: sps on 14 August 2013, 21:05

i looked at the sensor and it a new green one as opposed to black body one which were prone are to early failure.

Title: Re: intermittent hard start on golf mk4 1.6 16v with the AZD code.??
Post by: xtetx on 15 August 2013, 12:38

change the temp sensor and you will be fine. Mine did this and it was soo annoying. get a genuine one though.