hi guys my car is running really lumpy when its cold, mis firing and holding back, kangarooing up the road.

as soon as the car is warm it all stops.

i should add that the fans do not come on when i first start the car
(coolant temp sensor) and there is no cell light.

Thanks David

 

Its probably the engine temp sensor(s) for the ecu, these tell the ecu if the engine is cold and then ecu adds fuel to match and control running - I'm no expert though but know fuel injection cars are/can be like this.

Fans shouldn't be running from cold, only kick in when hot.

 

the reason i said about the fans it that it is a sign of the temp sensor failing when you start the car and the fans come on.

as i dont have this problem could it still be the temp sensor

 

Yes a few weeks after i got my impreza it had similar symptoms and the CEL wasn't lit ,changed it and it cured the problem.

 

thanks paul i will get one from triton next wekk.

Thanks david

 

did mine a few weeks back, helped mine loads when it was cold

 

Only costs about £25ish fairly easy to change as well (which makes a change )

 

thanks again paul.

David

 

changed the temp sensor and all working fine now.

 

im having a simular problem... is it easy to change a temp sensor?

 

also does not like starting when cold in the morning sometimes have to use the throttle to get it to start?? any ideas