Rev needle jumping?

Johnny Utah

I was sick for a week since Christmas/new year, so I wasn't able to drive my car or even start it up during that period. I started it up for the first time on Tuesday and the needle started jumping for about 30-60 seconds and then rested at idle. I drove it for about an hour that day and the engine sounded fine. The rev counter didn't jump at all when I drove the car.

I started the car up again this morning, and the rev needle started jumping again, but only for about 5-10 seconds this time and then rested at idle.

Is it just the cold weather or could there be something seriously wrong?

daveharnett

Johnny Utah wrote: »

I was sick for a week since Christmas/new year, so I wasn't able to drive my car or even start it up during that period. I started it up for the first time on Tuesday and the needle started jumping for about 30-60 seconds and then rested at idle. I drove it for about an hour that day and the engine sounded fine. The rev counter didn't jump at all when I drove the car.

I started the car up again this morning, and the rev needle started jumping again, but only for about 5-10 seconds this time and then rested at idle.

Is it just the cold weather or could there be something seriously wrong?

What car/engine?

Tipsy Mac

Cold weather and the choke kicking in to warm it.

Johnny Utah

daveharnett wrote: »

What car/engine?

E46 320 cd; 2 litre diesel engine.

tossy

Johnny Utah wrote: »

E46 320 cd; 2 litre diesel engine.

The ECU will read the outside temp and start the car in cold start mode during this weather,i wouldn't really worry about it too much.

Johnny Utah

Ok thanks, that's good to hear. Car always starts on first turn btw so it should be grand.

kona

Isnt the rev counter usually hooked up to the coil? could mean you have a dodgey coil.

Cesc09

kona wrote: »

Isnt the rev counter usually hooked up to the coil? could mean you have a dodgey coil.

Diesels don't have coils

Seanieke

will be grand