Im having some trouble with my car at the minute and wondered what advice people could give before I take it to a mechanic.
Its an r reg ford fiesta, I bought it just over a year ago done 15000 miles and havent had a problem with it until now.
On Friday I drove to Nottingham, which is about 150 miles away from me. Everything was okay when I was on the motorway but when I was driving round the town I noticed that when I was slowly down (approaching junctions etc.) the revs were dropping really low, the car was shuddering (like it was about to stall) and then the revs would kick back up to idling speed. The next day (Saturday) I tried to drive into town but this time when I slowed down the revs would just die all the way down and I had to restart the car every time. I had a look at the plugs and they did seem a bit old so I changed all these and checked that they were all sparking. After this the car ran slightly better and instead of cutting out, the revs dropped nearly all the way and then went back up to idle. On Sunday though the car just kept cutting out whenever I slowed down, but through some luck with traffic I was able to get it back home.
Anybody got any idea what might be wrong?