'06 S4 rpm fluctuations
#1
'06 S4 rpm fluctuations
Hi folks. Bought a 2006 S4 automatic with 63,000 miles five days ago (clean carfax, 2 owners) and have noticed when cruising steadily over flat land in high gears at 1,500-1,800 rpms or 40-50 mph for the first five minutes or so of a drive before the engine is fully warmed up the tach bounces consistently 80-120 rpms. Because it's the V8, it's quite noticeable and, considering I just bought the car, somewhat unnerving. I'm in Connecticut, so the weather is nice and mild albeit a bit humid right now; i.e., harsh temps are not the issue. Video of the tach in action follows. Any help would be much appreciated. And this is my first post -- hopefully among many more. https://vimeo.com/user1344728/videos
#2
#4
sorry to be the bearer of bad news ... it's the torque converter -- the automatic clutch, basically. apparenty, there's a seal that's defective, and once the transmission fluid warms up the ill effects vanish. at least that was my understanding. so you can either park over a heat lamp or get it fixed. problem is. they have to remove qnd reinstall you transmission to get to it. labor alone is $2,500-$3,000. Then another $750-$1,000 for parts and fluid refill. I got mine done. couldn't handle it. try lobbying tour dealer and audi of america to pick up some of the cost. it is a common problem and were it not for the cost probably should have been a recall. good luck....
#5
If you haven't had the transmission fluid changed, you might do well to start with that first. If you have Audi do it, it won't be cheap, but definitely cheaper than a new trans or torque converter.
I had the issue in my A6, and a fluid change resolved the problem. Audi claims 'lifetime' fluid, but that's not what ZF (the trans maker) says...
I had the issue in my A6, and a fluid change resolved the problem. Audi claims 'lifetime' fluid, but that's not what ZF (the trans maker) says...
#6
Hi folks. Bought a 2006 S4 automatic with 63,000 miles five days ago (clean carfax, 2 owners) and have noticed when cruising steadily over flat land in high gears at 1,500-1,800 rpms or 40-50 mph for the first five minutes or so of a drive before the engine is fully warmed up the tach bounces consistently 80-120 rpms. Because it's the V8, it's quite noticeable and, considering I just bought the car, somewhat unnerving. I'm in Connecticut, so the weather is nice and mild albeit a bit humid right now; i.e., harsh temps are not the issue. Video of the tach in action follows. Any help would be much appreciated. And this is my first post -- hopefully among many more. https://vimeo.com/user1344728/videos
I have a similar problem with my audi a6 4b c5 300hp 4.2 v8.
When this cold does not fluctuate the rpm and everything works normal, but when heated to be at a high rate between about 1800-2200rpm these variations until I have some 110km/hy remains stable.
Also when you do this is accompanied by a small vibration of 1 sec.
It will be the same?
Thank you very much for your help.
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