Question about Cars & Trucks
My Audi 18t 2005 a4 lost acceleration and began a gear grinding noise on the way home from work the battery light came on and the car would not move apon restarting the vehicle dash cleared of lights and noise continued i proceeded home to park the car for the night see attached video for noise all help would be greatly appreciated
Upon listerning to video i would associate this noise with a collapsed thrust bearing but someone talking had a american accent so that rules a manual gearbox fault out the window ,Manual gearboxes and americans do not mix that i have learnt on here over the years ,now the only other thing i would associate this noise with is a collapsed bearing in the alternator or a gear idler associated with the fan belt (V belt) or a collapsed bearing on the timing belt tensioner or a water pump but iam not sure if the water pump is driven by the timing belt or the fan belt on this engine
Another fault with a automatic version is the flex drive plate but then the ign light wouldnt come on so for the V belt area and have a good look
Posted on Dec 28, 2013
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Posted on Jan 02, 2017
The car has entered into fail safe mode. It wil not allow the engine to rev high but allows you only to get to a mechanic or to get some oil into the engine. What's the level like? Is there any trace of leakeage?
Posted on Nov 23, 2008
Hey there Cyber,
Classic symptoms, belt failure. Be glad you don't have a serpentine belt, the engine would have overheated too.
If you work close to home, it may even be a serpentine and just didn't have time to overheat.
At any rate: One of your belts powers both the Alternator and the Power Steering Pump. That belt is either very loose or laying on the road between your home and workplace.
The good news:
This is one of those lucky circumstances where the more that looks like its broken, the cheaper and easier it is to fix. If it was only the Alt. or P/S that would mean all sorts of diagnostics, tests, etc.
Both at once? The belt.
The cost? Less than $20.00 if serpentine. Less than $5.00 if not.
If the old one is still hanging there, it will be useful when getting a new one (to size it).
Let me know if you feel like replacing it yourself.
If it's a serpentine, click here for the procedure (the trick) to get it on.
Once the new belt is on the only thing you'll need is a jump.
Any additional questions? Just comment me back.
Thanks for using FixYa
Posted on Dec 01, 2008
It's possible that the diverter valve (DV) has failed. The OEM valve has a plastic diaphragm inside and it can crack. If this happens, the car will leak boost air and will lose power as a result. Go to www.audiworld.com, click on Resources, then Tech, and then go to the engine article about replacing/upgrading the diverter valve - it'll show you where it is and how to do it.
Posted on Mar 27, 2009
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