2001 S4 Surging Under Full Throttle

[lilmoose21]

Hello All,

So when i floor it, a lot of boost comes on around 3100, then it noticeably dips down until about 5500, and then rips again from there. Is there anything I can do to smoothen that out?

[emmettlodge]

Stop flooring it?

[jmj]

[mellbergVWfan]

Boost leak. Check your logs and get a boost gauge. The car is most likely cutting power until it thinks everything is okay again.

[2.0T_Convert]

Sounds like the blinker fluid is leaking and fouling up the boost servo motors.

[NoXenons]

NOS, you need NOS- one of the big ones. Actually, make it two.

[VW...vw...wv...WV]

Gotta agree on the boost leak...bipipe maybe? (Throttle body boot?)

[..Derek..]

"F" Hose

[slide13]

why don't you drive it below 3100RPM?

am i cool yet?

[ABATurbo]

leaking bypass valves? Could also be a wastegate problem. If the ECU sees an overboost situation, it will most likely pull back WGDC to bring boost pressure down.

[Shomegrown]

Boost leak? Bad N75? Log it and find out.

[gambit420s]

As an owner of a B5S4, I can tell you all of your problems stem from the inability to correctly identify an appropriate forum after 8 years, the car is just mad at you.

[Taran]

"F" Hose

This isn't the OP's first thread on his yellow car trouble and it's already been determined his car isn't equipped with the "F" hose.

[JeffIsLax]

Sounds like danger to manifold. Better check your floorboard wingnuts.

[WakusPakus]

OP - stop making the VW/Audi drivers of our state look bad/dumb.

take your car to the shop as you don't know how to fix it.

[lilmoose21]

This isn't the OP's first thread on his yellow car trouble and it's already been determined his car isn't equipped with the "F" hose.

Yea, well my car is fixed for the most part. I have installed a Samco TBB, APR DV's, MAF, Stock Intake, Spark Plugs..I think that's it. It really helped all my issues, but I thought the surging could be fixed like on a 1.8t with an N75 valve or something like that. And I post here, because the S4 forum on vortex is terrible, and I hate the layout of audiworld and audizine. Plus I get to read all the super witty comments from all you comedians

[lilmoose21]

OP - stop making the VW/Audi drivers of our state look bad/dumb.

take your car to the shop as you don't know how to fix it.

How am I dumb? By using a free resource instead of having to pay 90 bucks an hour for someone to diagnose my car? Sounds real dumb...

I'm trying to buy parts and then bring to the shop to avoid the extra expense of them upcharging the parts I would need.

[Shmi]

How am I dumb? By using a free resource instead of having to pay 90 bucks an hour for someone to diagnose my car? Sounds real dumb...

I'm trying to buy parts and then bring to the shop to avoid the extra expense of them upcharging the parts I would need.

Many good shops roll diagnostic fees into the labor. i.e. 1 hour labor + 4 hour job ends up being a total of 4 hours instead of 5.

As for throwing parts at a car so that the shop doesn't mark them up, when you really don't know what's wrong with it... debatable but I'd just pay the diagnosis. It often pays for itself. If Issue A leads to B and you're telling them to replace B, that's all they're going to do, without fixing a root cause. But w/e.

[Jerico007]

Sounds like the blinker fluid is leaking and fouling up the boost servo motors.

Isn't that always the case?

[lilmoose21]

Many good shops roll diagnostic fees into the labor. i.e. 1 hour labor + 4 hour job ends up being a total of 4 hours instead of 5.

As for throwing parts at a car so that the shop doesn't mark them up, when you really don't know what's wrong with it... debatable but I'd just pay the diagnosis. It often pays for itself. If Issue A leads to B and you're telling them to replace B, that's all they're going to do, without fixing a root cause. But w/e.

I understand going to the shop to have it diagnosed, but honestly I'm just killing time at work, and thought "Hey, maybe someone will have something useful to input" instead of man you're dumb, and stop flooring it, and dumb F&F quotes...this place really is turning into a bunch of aholes who just sit around waiting to sh!t on someone because they're losers with nothing else to do

[emmettlodge]

I understand going to the shop to have it diagnosed, but honestly I'm just killing time at work, and thought "Hey, maybe someone will have something useful to input" instead of man you're dumb, and stop flooring it, and dumb F&F quotes...this place really is turning into a bunch of aholes who just sit around waiting to sh!t on someone because they're losers with nothing else to do

I found a group photo of some of our finer members.

I'm the one on the bottom left.

[lilmoose21]

I found a group photo of some of our finer members.

I'm the one on the bottom left.

At least that's funny

[compy222]

22 posts in and no VTEC/you could dead jokes...TCL is slipping.

[bubbagti]

Lower it

[joe@vwvortex]

S4 owners resource

Buy a Vag Com.

[Taran]

[gambit420s]

I understand going to the shop to have it diagnosed, but honestly I'm just killing time at work, and thought "Hey, maybe someone will have something useful to input" instead of man you're dumb, and stop flooring it, and dumb F&F quotes...this place really is turning into a bunch of aholes who just sit around waiting to sh!t on someone because they're losers with nothing else to do

Actually I'm a loser that poorly attempts to **** on retards who don't know where to post, in between fixing peoples B5S4's with boost leaks, if you were paying me, I'm a much more helpful loser.

[96vwgtiracer]

how is this the wrong forum for questions about a 2001 S4? call me old school but back in the day... people used this to help each other out with car questions and issues. not just to be a bunch of douche bags.

[lilmoose21]

Actually I'm a loser that poorly attempts to **** on retards who don't know where to post, in between fixing peoples B5S4's with boost leaks, if you were paying me, I'm a much more helpful loser.

*******, I also posted this in the B5 S4 Forum. Your argument is retarded...

[lilmoose21]

how is this the wrong forum for questions about a 2001 S4? call me old school but back in the day... people used this to help each other out with car questions and issues. not just to be a bunch of douche bags.

I originally posted this in the car lounge since it gets much more traffic than this forum, but apparently you can only ask what car you should buy for 4 grand there, so the Mods moved it

[.:brokeswagn:.]

this is actually sad, I find myself coming to the "tex" less and less for this simple reason. I was actually hoping to read that you found a solution to this

[lilmoose21]

this is actually sad, I find myself coming to the "tex" less and less for this simple reason. I was actually hoping to read that you found a solution to this

I still read TCL, but eff this place for anything but superficial BS. The best part is, my argument for posting in TCL is proven by the fact that my original post in the B5 forum has 115 views and not one reply...

[dingo7]

sounds like bad muffler bearings

[dingo7]

in all seriousness I am having this same problem. I traced mine back to a bad N75 valve.

[dos]

I had a similar problem, find someone local with a Vag-Com to read the codes before you dump money into something that might not be the problem. Are you getting a CEL? My problem was 2 bad EGT sensors.