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S4 Engine problem: explosion like sound, lost power

Old 04-30-2003, 02:59 PM
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Default S4 Engine problem: explosion like sound, lost power

Hi everybody.

Wanted to see if anybody would have any idea about my problem:

The other night while coming back home I heard and saw a small explosion accompanied by a small cloud of dust (or something) that came from somewhere under the hood. The car lost power immediately but kept running (no white smoke or strange noises at all).

Once I got home I inspected under the hood and was not able to find ONE trace of anything... no oil, no smoke, nothing...

Last night I got to check under the car (took the plastic cover off) and again.. was not able to find anything at all.

I tried to check as many hoses as I could and they all look/seemed ok. The puff came from the right side so I am thinking either the IC or a hose went.

The car idles fine and there is nothing else strange (not even the Engine check light) just barely accelerates (limp mode perhaps??).

I am trying to get the car to the dealer but you know the story. Maybe in 2 weeks and we probably won't have parts... damn...

Any ideas or suggestions will be much appreciated.

Thanks.
Old 04-30-2003, 03:02 PM
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Default limp mode still let's you accelerate, just at .4 bar. any way to do a pressure check

That would tell you if you had a loose hose or a whole in an intercooler or something else.
Old 04-30-2003, 03:03 PM
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sounds like blown upper/lower intercooler hose.
Old 04-30-2003, 03:03 PM
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lower ic hose
Old 04-30-2003, 03:08 PM
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Default That's my guess also. I had that happen once. Car would buck like crazy

when I would give it throttle.
Old 04-30-2003, 03:10 PM
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Would a VAG tool help diagnose? Thanks again.
Old 04-30-2003, 03:11 PM
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No bucking here, just no acceleration .
Old 04-30-2003, 03:20 PM
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Agreed. Do a Pressure Check!
Old 04-30-2003, 03:48 PM
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Bumper needs to come off to be able to check, right? Thx
Old 04-30-2003, 04:28 PM
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No... Just look under there and see if its not attached to the i/c
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