[Biturbos4] several niggling issues
brogers at terrix.com
Wed Nov 8 11:30:36 EST 2006
Last night I found _both_ bypass valves had torn diaphragms - luckily
had a couple spares (different part numbers but better than two broken
ones!) - am going to order 710Ns today.
I have the H&R coilovers - threaded shock bodies - any input on these vs
Stasis Street Sports?
Will get on the other items
'84 urquattro 20Vt
'98 A4 1.8Tq
From: Wilson Northrup [mailto:northrup at crazybug.com]
Sent: Tuesday, November 07, 2006 5:23 PM
To: Brandon Rogers
Subject: Re: [Biturbos4] several niggling issues
1. throttle body boot and bypass valves. check them, maybe replace it
with something better. there are lots of options, i choose the samco
option and forge bpv. you might follow the other posters advice for
something cheaper that is also good.
2. bleed the fluid. i use motul 600 but other fluid is good too.
3. install them.
4. can't say i like the reach for 5th, i use the UUC short shifter.
5. upgrade to the mirror with built in compas. get it from clairparts.
6. for me, this was a loose hose for the headlight washers. 1 hour of
my personal time in the garage to fix.
On Tue, 7 Nov 2006, Brandon Rogers wrote:
> Hey guys-
> My S4 is not well. All sorts of niggling issues. I like the car,
> basically, but haven't "fallen" for it like I did ny A4 - and I
> finally figured out why - all the "driver input" systems are out of
> 1. Throttle response - the engine is super-hyper-sensitive to
> throttle input. Can be jerky. I am putting together a pressure
> tester and hope to pressure test the intake in the next day or two.
> What are symptoms of bad (either 1 or 2) bypass valves?
> 2. The brakes are soft. There is lots of pedal travel (usually) then
> over-boosted brakes. It is inconsistent - sometimes the pedal travel
> is long - every once in a while the brakes engage almost immediately.
> Car has new front pads/rotors - but I think the system needs to be
> flushed and/or bled.
> 3. Suspension. Stock is very high and lots of nose dive. More
> importantly - the car gets thrown around (I'm not talking tramlining
> here) over virtually any and every road surface imperfection. I had
> the car aligned shortly after I got it (Feb) but it still does this -
> maybe needs to be re-done - maybe they missed something. There does
> not sem to be any looseness in the front suspension - I've had plenty
> of experience with loose control arms on the A4. I do have soem H&R/
> Bilsteins in the garage but am wary to install prior to getting other
> issues sorted. Catch 22 I don't want to have the car aligned only to
> install the new susp and have it done again. Money doesn't grow on
> trees around here...
> 4. The shifter has vague 1st and 5th engagement - sometimes pops out.
> I've had the dealer adjust it and it made a big difference and is
> definitely a lot better - but the shifter action in my A4 is _much_
> 5. Rearview mirror is broken - has that "oval" when the auto dim
> fluid goes by by I guess...will find a used one...
> 6. Washer fluid reservoir has a leak - it hold a fair amount of fluid
> - but not enough to keep the "low fluid" dash symbol on all the time.
> Maybe the reservoir is leaking where the sensor is installed -
> hopefully I can just seal the leak instead of replace the whole
> Any insight/tips/fixes appreciated
> '84 urquattro 20Vt
> '01.5 S4
> '98 A4 1.8Tq
> Biturbos4 mailing list
> Biturbos4 at www.audifans.com
More information about the Biturbos4