urgent help required? before i cry !!!!

[garsi_j]

Hi all,

first post so be gentle with me.

Over the weekend i had a problem develop on my megane 05 expression. The idle speed was very eratic and was around the 2 mark instead of the usuall 1.

I took the car back to the dealership as i had it serviced 2 weeks ago and they spent an hour with it and came back saying the the computer they put it on confirmed that the alternator was faulty and not deliverying to the fuel injectors hence causing the problem. They quoted me £650 for a new alternator and at this point i left the dealership in a state of shock so didnt question this maybe when i should have - cant afford to pay this.

My question to you loveley people would be does this sound right? im no expert in cars but if the alternator was faulty surely the car would not start?

anyone else had this problem - and what else could it possibly be if its not the alternator

Urgent help would be great as i think im going to have many sleepness nights!

kind regards

[davelowe]

If its a diesel, check the throttle potentiometer - if faulty it will idle at 2k instead of 850.