V6 4motion poor cold start
#1
12-31-2008, 11:14 AM
V6 4motion poor cold start
My 2002 V6 is intermittantly a pig to start when cold. It cranks really well but doesnt want to fire. It may spin over for 3 - 4 seconds then chug into life as if it is flooded. I never touch the throttle until it has started, there are no fault codes in the management and it runs perfectly afterwards and restarts ok. It is in a garage so not damp, has had a service recently with new plugs and one new coil. It has been like this for a while but seems to be much worse with the cold weather.Any ideas?
Also I think the wrong oil was used at the service (Quantum Syntra 10/40 vw 505.00) is this ok? It is changed yearly , approx 6,000 miles and uses very little between services but I am paranoid about damaging the engine
Any ideas appreciated
Also I think the wrong oil was used at the service (Quantum Syntra 10/40 vw 505.00) is this ok? It is changed yearly , approx 6,000 miles and uses very little between services but I am paranoid about damaging the engine
Any ideas appreciated
#2
12-31-2008, 02:55 PM
RE: V6 4motion poor cold start
your supposed to change your oil every 3 months or 3000 miles. and it could be the ends on you battery cables. I had the same problem and I made new cable ends and I never had a hard start again.
#3
01-04-2009, 08:44 AM
RE: V6 4motion poor cold start
With vagcom I have checked voltage at the engine ecu. It is slightly low (11.8v), but I think this is due to low temperature. I connected up jump leads to another car which I left running and had 13.8v reading at the ecu. It still did not want to fire up so I dont think it is a voltage issue. I am going to try a coolant sensor as it is quite cheap and general opinion says they are dubious.
It is reading 5.c when ambient and oil temp are showing 1.c
Any ideas?
It is reading 5.c when ambient and oil temp are showing 1.c
Any ideas?
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