Rough running and loss of power.
Hello knowledgeable folks.
Before I run off to my garage with my 2001 3.0ltr 166 sportronic, I could do with some advice/wisdom. My 166 has started to feel lumpy and underpowered. The experience is subtle, at low revs I can feel a hesitancy and it refuses to accelerate hard. Even at 5000rpm in 2nd gear it feels unsure/unhappy; a month ago it would have been straining at the leash for more revs. And IT IS slow. Where other vehicles used to disappear in my rearview mirror now they stay there too long and make me feel ordinary and damned uncomfortable. My question is, what do I say to the garage/mechanic that will be useful and will keep the cost down whilst the problem is discovered? The car is 5000 miles from its 72,000 mile service. Iíve had the timing belts/tensioners and water pump done 3000 miles ago, and I canít believe the change of headlight unit (£££££) last month could have cause this!