R56 Oh no, yoyo's
#1
05-09-2011, 08:31 PM
Oh no, yoyo's
2007 S, 62k miles, MT,
This morning after my 60 mile commute, I zoomed around a round-a-bout in 2nd, got some boost, then backed off to 30 or so and the car began misfire, lurch and run rough. Then the rpm's began "hunting"/"yo yo" etc. Check engine light on, of course. After work, more of the same. It was time to refuel so filled up and headed home (another 60 miles). Ran at 58-60 mph. Gradually, the rpm hunt range narrowed from 5-600 to 2-400 rpm, but never smoothed out. It was an atypical Kansas day for early May: 100* and a 30 mph headwind and I thought I was doing well to get 34 mpg with the a/c on. Contrasted with the 52 mpg on the way to work with the same tailwind, before the problem. What should I be looking for?
This morning after my 60 mile commute, I zoomed around a round-a-bout in 2nd, got some boost, then backed off to 30 or so and the car began misfire, lurch and run rough. Then the rpm's began "hunting"/"yo yo" etc. Check engine light on, of course. After work, more of the same. It was time to refuel so filled up and headed home (another 60 miles). Ran at 58-60 mph. Gradually, the rpm hunt range narrowed from 5-600 to 2-400 rpm, but never smoothed out. It was an atypical Kansas day for early May: 100* and a 30 mph headwind and I thought I was doing well to get 34 mpg with the a/c on. Contrasted with the 52 mpg on the way to work with the same tailwind, before the problem. What should I be looking for?
#2
05-09-2011, 11:14 PM
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