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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 |
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.
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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? |
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