So. Mine is an '01 Bora (Jetta) Wolfsburg edition. Jumped into that straight out of a 1987 Wolfsburg Jetta GLI, so naturally a little overwhelmed with the turbocharger, airbag sensors (and airbags in general) and all it's other gizmos.
But it gets better. This car I bought came with all kinds of extra kit. APR stage 3 turbo kit, turbo back exhaust, Eibach suspension, and Caractere body kit.
Now, about the turbo. It shouldn't be making a whistling noise, should it? I've heard them in the movies, And I work with other folks with turbos, and that's not what mine sounds like. Also, the gentleman I bought the car from says there is a hose that is not hooked up properly, and leaks. But when I get under the car and look at all the hoses to the turbo, they all seem to be proper.
Am I stuck getting up there and unhooking each hose, then properly reattaching them, or is the whistle normal or what? Advice much appreciated, my newfound brothers and sisters!
BOV is blow off valve, which blows out the extra boost build up in between shifts. When do you hear the whistle? It just could be the turbo spooling and it's louder cause of the stage III turbo is bigger. BTW, what hose did he say isn't hooked up properly?
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Once throttle is lifted a BOV will release all pressure in the intake system.
The other option is a recirculating valve or diverting valve(DV) which keeps the pressure.
There's also hybrid "splitter" which does both.
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Quote:
Originally Posted by groundupjetta
speed without looks is as useful as a girl without tits
BOV is blow off valve, which blows out the extra boost build up in between shifts. When do you hear the whistle? It just could be the turbo spooling and it's louder cause of the stage III turbo is bigger. BTW, what hose did he say isn't hooked up properly?
Quote:
Originally Posted by Shameless
Blow off valve.
Once throttle is lifted a BOV will release all pressure in the intake system.
The other option is a recirculating valve or diverting valve(DV) which keeps the pressure.
There's also hybrid "splitter" which does both.
He didn't say which hose. Just "IF you're looking at the motor, its back here, and follow this and blah." ....I am aware of the turbo's location. Which hose?! LOL.
And it whistles all the time. It's not BOV. could be it spooling up, but I haven't heard it release when I let off. So there's gotta be a leak keeping it from building pressure, eh?
How similar do you think the piping/hosing would be to OE? Could I refer to my Bentley to help determine which hose?
And. Someone else told me I should be seeing oil drops if there indeed was a leaking hose. true?
Last edited by Dela-Quitii; 10-05-2012 at 02:30 PM.
You'll only see oil drips if it's the oil feed/return line that leaking. Yours sound vacuum. I would get a propane and turn it on, BUT DON'T LIGHT IT, and run it across the lines, if the motor revs, you found your leak.
Do you have a boost gauge? If so, what is the PSI at?
__________________ 2001 golf gls 2.0totaled... 1987 Jetta Coupe Deluxedaily and project
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post a pic of the engine bay. especially near the air intake. might be easy for one of us to spot. there is not many hoses near the turbo beside the turbo inlet pipe. something could have popped out. most of the time it will throw a code.
Sounds like it's between the turbo in motor if it's not dumping air.
Is it spooling, when it spools do you feel a definitive power increase?
the only thing i hear is it whistling. But OH YEAH, right about 3k, starts to take off. throws me back in my seat.
Also, I'm not sure if it's just needing to change the cabin filter, or the leaking turbo that happens to be next to the cabin filter and fresh air intake, or just the reason volkswagen added the air recirculation feature. But, I swear the exhaust comes through bad at times.
Last edited by Dela-Quitii; 10-06-2012 at 02:36 AM.
i get it. pressure leak causing loss, albeit minor loss, of power. also causing exhaust fumes to be pumped into cabin. like the guy said, it's a hose that's on, under pressure and causes it to whistle like a teapot. Does anyone have an answer of what to look for or am I on my own?
I'd start with looking at the turbo inlet and intercooler piping. Turbo inlet is the big pipe coming off the turbo that goes to the airbox. Intercooler piping will run from the intake manifold to the intercooler to the turbo. I'd loosen those, kinda rotate them a bit and re-tighten them.
Like Fubar said, if you're able to, post a picture or two of the engine bay. There's enough 1.8t owners here that can tell just by looking at a picture if something is wrong. Could be something pretty obvious.
__________________ 2001 golf gls 2.0totaled... 1987 Jetta Coupe Deluxedaily and project
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