I was coming home from work tonight and had to slow down pretty sharpish at a set of traffic lights on a dual carriage way. Then I noticed the revs were bouncing up and down, up to about say 1500 and almost stalling to begin with but then gradually settling down to a normal idle. At the next set of traffic lights where my slow down was a bit more gradual the same thing happened but the revs weren't as erratic and settled down a lot sooner. The next set of lights were fine. No engine management light. Any ideas? Could spark plugs be the prob (about 30k on this set)? MAF on the way out?
I noticed a guide to cleaning out the EGR system for a diesel, would it be worth doing this for petrol? At my last garage visit they cleaned out the throttle body and all the breathers and vacuum pipes to the turbo due to a low pressure between the turbo and TB causing the engne management light to come on. At the time when the light was on the car ran perfectly except for one occasion when it started hunting in the same circumstances as described above. This was a month ago and its been running perfectly since the garage did the work and reset the light.
Any thoughts welcomed.
thanks
