starting problem

[dipdipsal 0]

can anyone plz help, have a golf vr6 mark3, when i turn the key it fires car dosent stay on it jst cuts of, av to keep trying till the car stays on, sumtyms takes hours even a day. but when it stays on its fine, happens evry month, what could be the problem.

(when i turn the key revs go up an then the car dies after a second) av to keep trying till car stays on.

plz any 1 help.

[Jess_smif124 0]

mines the same but the oil light flashes

[M44 DUB 2]

MInes does this too, can't locate the problem but can get it started if i put it in 1st and let the clutch out and bump it keep the key turning over until it burst into life.

Had it on VAGcom and it showed up no faults. It's doing my head in tbh.

[CALICO 130]

sounds similar to a problem i used to have changed the immobiliser ring around the ignition key works perfect

[MJ Vr6 79]

Check the Temp Sensor as well mate!

[CALICO 130]

http://cgi.ebay.co.uk/MK3-GOLF-CORRADO-VR6-READER-COIL-VENTO-PASSAT_W0QQitemZ200435352021QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item2eaae0c1d5

this is where i got mine from

[VR6Pete 1,455]

intermittemt immobiliser fault it sounds like to me

[Rikki 2]

Yup x2. Check the ring behind the ignition. If its not faulting on vagcom could just be loose and not picking up the key now and again?

[CALICO 130]

let us know how you cure it

[Scott 0]

sounds like the iacv could be dirty or jammed too, or the MAF is open circuit...

[Rikki 2]

Whats an iacv?

[Jess_smif124 0]

i thought it would be a simple fix im only a girl lol

[M44 DUB 2]

well had brand new MAF fitted at Star also changed temp sensor so i'll check ignition ring.

[CALICO 130]

Whats an iacv?

my guess is isv lol

[Rikki 2]

Your prob right....never heard it called that before and if hes obd2 he wont have one anyway!!!!!!!!!!

[Scott 0]

idle air control valve

it sets the idle, if its jammed shut it wont idle cold, or jammed open, wont idle hot. The maf (airflow meter) if open circuit, will make it start but immediately cut out when cold, will idle for about 10 seconds when hot

a short circuit maf will run perfect cold, then cut out and refuse to rev when hot (over 60oC oil temp on MFA)

Engine coolant temp sensor (ECT) will cause the same symptoms.

immob ring will always start first then cut out a few seconds later on the mk3

[Rikki 2]

So an isv then????? If an obd2 maf is open circuit the car will run almost normal as it gets the idle from the throttle body. I still think its immob ring if its not in the correct place and isnt sensing the chip in the key all the time this will cause his problem. To the OP what year is your car ?

[VR6Kev 0]

I had a similar problem to this a while back and it turned out to be a faulty ignition switch cutting power when returning from the starting position to the running position.

[Scott 0]

soz good point mate, I have an obd1 vr6, keep forgetting the differences.

M44 DUB - I live between glenrothes and cupar, and I have a VAG405 Scanner, If you want, I can check your motor for faults again and reset the ecu / immob etc.

Chuck me a PM if you need it done mate.

[dipdipsal 0]

changed the trmp sensor, still got the starting problem, found out my wiring sum where near the ignition is loose, evry tym it dose the problem i shake the bunch of wires then turn the key an fires up strate away, just need to look in2 it proply 2 find which wire is loose.

[grafteratwork 2]

bump