Audi A4 1.8TQ: harsh idle... Dual Mass Flywheel?
#1
Audi A4 1.8TQ: harsh idle... Dual Mass Flywheel?
Hey guys,
I have a 2004 Audi A4 1.8TQ, with a mannual 6-speed transmission.
The car is vibrating at idle - it's a regular, high-frequency vibration that can be felt on the wheel and even on parts of the dashboard. The engine is running fine: no misfires, no rpm fluctuations, or anything. The car idles at about 820-830 rpm. Once the engine revs up to 870 and above, the vibration is gone.
Pressing the clutch pedal does not change anything.
I've noticed that the colder the outside T is, the worse the problem is.
I've had all plugs, coils, and both engine mounts + the snub mount replaced. No luck. I've also cleaned the throttle and the MAF.
A local repair shop said that the dual mass flywheel is causing the problem.
However, considering the cost of replacing the flywheel, I wanted to get a second opinion... Could it really be the dual mass flywheel?
Thanks
I have a 2004 Audi A4 1.8TQ, with a mannual 6-speed transmission.
The car is vibrating at idle - it's a regular, high-frequency vibration that can be felt on the wheel and even on parts of the dashboard. The engine is running fine: no misfires, no rpm fluctuations, or anything. The car idles at about 820-830 rpm. Once the engine revs up to 870 and above, the vibration is gone.
Pressing the clutch pedal does not change anything.
I've noticed that the colder the outside T is, the worse the problem is.
I've had all plugs, coils, and both engine mounts + the snub mount replaced. No luck. I've also cleaned the throttle and the MAF.
A local repair shop said that the dual mass flywheel is causing the problem.
However, considering the cost of replacing the flywheel, I wanted to get a second opinion... Could it really be the dual mass flywheel?
Thanks
#3
Have you checked the engine/tranmission mount?
I guess if the flywheel was pretty much 100% bad or coming apart it could cause a bad vibration at idle and then go away once you raise the rpm or have the car rolling in gear at a higher rpm. Usually a bad dual mass flywheel will give you a clunk/bang when engaging the clutch from a start or when shifting gears.
I guess if the flywheel was pretty much 100% bad or coming apart it could cause a bad vibration at idle and then go away once you raise the rpm or have the car rolling in gear at a higher rpm. Usually a bad dual mass flywheel will give you a clunk/bang when engaging the clutch from a start or when shifting gears.
Thread
Thread Starter
Forum
Replies
Last Post
quattrosedan
Archive - Engine/Performance Parts
0
12-19-2006 11:54 AM