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[mega3.0v6]

This morning was a very cold one on the way to work this morning at 6am just coming off the slip road onto the motorway i put my foot down and the car started to hold back a bit until i got over 2k revs. But once car was at running temp all seemed to be ok and this is the 1st time today it has done it and im thinking it may have been the cold air and there might be an issue with the Air Flow Sensor like i say all seems to be ok when at running temp and was only doing it a little bit this evening on the way home. Also when starting from cold smelt of fuel until warmed up. This is on a 3L v6.

[rustym95]

you may have had some ice in the maf, or the air intake temp sensor, may have got damp and frozen up.
was -4c from 1am till 6am most of the uk  and the weather has been wet aswell.

[Kevin Wood]

Sounds like an ignition problem to me. Try a paperclip check just in case there are any fault codes. If nothing stored check plugs / leads / coil pack. Could be getting damp overnight.

Kevin

[dbug]

Probably ignition issue although you can check out if MAF sensor is playing up by disconnecting it and judging the effect.  Normally a bad MAF will prevent the engine from reving freely.

[mega3.0v6]

Thanks for the replies. Surely if it is coil pack it would miss all the time once engine is at 90degrees runs like it did before problem. I am going to check plugs tomorrow weather permitting.

[Entwood]

If its damp .. it will dry out as the engine warms up so start to run better.

If its a bad contact it might improve as things expand as they get warm.

If it's just poor ignition in general, "cold" fuel atomises less well than warm fuel, and the plenum gets quite hot so adds heat to the fuel/air mix to help it atomise.

So could be several things, but most are ignition linked