Tiguan :: Boost Gauge / Vacuum While Driving On The Freeway
Nov 16, 2011
I recently installed a boost gauge on my 2010 Tiguan (Auto, 4 Motion) and was rather surprised by the readings when driving on the freeway.
At around 65-70 MPH on a flat surface, the manifold pressure is just about 0 (range of 1in Hg - 1psi) all the time. I am used to my 1.8t thats runs 10 in hg vacuum at highway speeds. I just find it a little odd that the turbo is working hard enough to relieve the intake of all vacuum, and sometimes even boost while driving with hardly any engine load.
My gauge reads 20 vacuum at idle and 15-18lbs max boost with apr software. What readings does every else here see? Any difference between auto and manual?
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Bought a 1.8t 04 gli. Was boosting 15 pounds so i did a boost leak test. Found pcv up hose from valve to y pipe at valve cover was almost blown in half, so i replace all of that stuff with oem.
Boost leak test again, found where boost gauge is hooked up to, turbo outlet to n75, the hose was leaking, i fixed that.
Boost leak test yet again, n75 was not clamped down, so clamped that.
Boost leak test one last time, held 10 psi before blowing the cap out of the intake. Which is pretty dangerous, my cap is made out of a spray can cut in half. Sounds like a canon. Anyways i heard zero leaks.
So now I am boosting 18psi and holding perfectly fine. Why I am showing ZERO vacuum on my boost gauge??
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Removed the battery to install a boost gauge and came back to a christmas tree cluster. Not just the usual steering/EPC either. I can post the expanded scan but you can see a lot of things are affected, still drives fine however. Airbag fault and parking brake fault appear on MFD as well.
Thursday,07,May,2015,15:43:55:18277
VCDS -- Windows Based VAG/VAS Emulator
VCDS Version: 14.10.2.0 (x64)
Data version: 20150311
[Code] ...
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Went to see a movie, Vehicle was running fine. Then, on the drive home I noticed there was no turbo boost at all. Was a struggle trying to pass someone going 10km faster than me. Got home, Reverse the Vehicle into my parking spot then the engine died. Car wont start now. Sounds and feels like the fuel pump went, turns over, a mere whisper of the engine trying to get going, but never does. Plugged it in, getting misfire codes. Checked the Diverter valve and seems to be fine, checking the front PVC Valve tomorrow. Its just really strange how the turbo wasn't functioning at all, but the vehicle ran all the way home, Then died when i backed it in my spot. and now wont start. Its throwing me off, All i can think of is Coil Packs, spark plugs, Diverter Valve, PVC valve. 2010 Tiguan 2.0t.....
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Okay, I was driving down the freeway and suddenly my temperature gauge zoomed to Hot and steam rose out of the car. I stopped the car and let it cool down, then drove the 5 miles very slowly to the mechanic-stopping twice to let it cool completely.
I got it to the mechanic and a huge crack appeared across the top of the radiator when the car was on. New radiator time-gotcha. She has 235K miles on her and before this ran like she was brand new.
Now not a couple days later, I started noticing that transmission fluid was leaking about 1/2 cup of fluid a day dripping down from the axle. Can I use a stop leak for transmissions/transaxle? Would it fix the issue temporarily...
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Ever since I got my car about 5/6 months ago I noticed it's not getting full boost. when I first got it the stock boost was getting about 5-7 I don't know if that's normal I've read they normally get more. eventually I got my car tuned and it's supposed to peak at 22 psi but it only got to about 13-14 psi. slowly it's been getting worse and my car is getting 2 psi. I've had lots of people tell me it's a vacuum leak. also the bov makes a flutter noise if that has anything to do with it. my intake doesn't make a sucking in noise like most do. The car has been randomly backfiring usually between gears. I just ordered a turbo inlet pipe a breather hose kit and a boost hose kit.
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This is my other question. I have an APR program and turbo-back billy boat exhaust. I installed a boost gauge that gets the reading off of the intake manifold (fuel regulator.)
So if I'm just tooling along, short-shifting and only using 1/10 throttle, and my boost gauge never reads above -5, let alone 0 or positive, why does my valve release pressure?
Why would there be pressure to release if there is a vacuum, according to the gauge? I wouldn't think that a recirculating or blow-off valve would work in reverse.
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I have a buddy with a 2006 Sonata, 3.3. It has about 138,000 miles on it.
When it gets hot, it will LEAP into gear. As if when you put it in gear, the throttle is pushed open 10% or something. Kinda like you would do with an old Ford or Chevy (like the 70's) that stalls when you put in gear. When it gets really hot, like after driving it for 30 or 40 miles, when you come to a stop, you lose the vacuum boost on the brakes, and the engine just goes on the pre-detonating rampage! It literally sounds like Dodge with Cummins diesel in it! It's fighting you while you struggle to keep it from LAUNCHING off the line. The strange thing is, as it is put back into N or P, it returns to normal instantaneously as if nothing was wrong in the first place.
My bud took it to the dealer, here is what they think it could be:
1. Clogged cats (nope, no back pressure, already checked)
2. Wrong spark plugs (it does not have the OEM direct replacement, it has some kind of dual electrode deal in it, but the part number crosses as an acceptable replacement)
3. The dealer did say that the ecm is up to date and that the throttle body is calibrated. That's what I thought it was in the first place.
In my professional opinion, I think it might be a ragged out timing belt. But I'm a domestic mechanic, not so strong with the imports (not trolling here, seriously, I work with fleets 99% of the time).
And there are no codes either.
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Is there anyway to get a boost readout On the MFI for a 2012 tig s 4mo?? Also any way to LIFT a 2012 4mo???
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I was driving the wifes 12 Tiguan SEL 4mo the other day and noticed that on accel it makes some odd noise, almost a tinny boost leak noise, it seems to accel just fine but at certain rpm's it makes this weird noise, its not a normal turbo boost noise i hear that as well. Maybe this noise is completely normal or maybe it isn't?
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Our car has been throwing a low boost code. We replaced the dv valve, pcv was just replaced but code still comes up. It's been making this noise that has arised with the code. It will do it down hill from 1500 to 2400. Just a constant rattle.
What do we do from here? Fix rod? New wastegate? New turbo?
[URL]......
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I have a 2001.5 Passat with a TIP and an upsolute chip. I was wondering if there are any write ups with pictures on how to install a boost gauge. I'm having trouble finding where to put one as well as where to T off and get pressure from.
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So popped my plastic shroud off to change my oil and thought it was strange the the hose for the boost gauge was really oily. Is it normal?
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I am experiencing a power/boost pulse when under moderate to heavy acceleration. I'm wondering if this is a sign of my diverter valve failing or another issue withing the turbo system.
I don't have a boost gauge and the main pulsing seems to be between 2800 and 5k in the rpm band.
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I have recently purchased a c70 t5 which supposedly had been remapped. Anyway this weekend I changed the ICarScan unit and pipework, replaced the turbo vacuum lines and it has had a full service oil,plugs,rotor arm and cap etc. Prior to this it would occasionally pull aggressively and other times not. Now it boost all the time and feels good, however I noticed the boost gauge is now hitting almost 1.5 bar and dropping to about 0.9 bar. What could be causing this. In addition to the above work I removed the nasty badly modified inlet pipe and fitted an original between the air box and turbo. Which connection go where so I can ensure I am correct.
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How accurate is the stock boost gauge on 02 wrx? is it a real boost gauge or is it just for show? 3000gt vr4 has one, but it is not a real one and work with maf sensor only. also is stock bov good for 15-16 psi. we have a stock 02 wrx and we are thinking to up the boost to about 1 bar, but not sure i can trust the stock boost gauge. the car also has catback and cold air intake on it.
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When I give my car some gas my boost gauge fluctuates a lot and doesn't hold, I have an OEM piston style dv revision d I believe, and I have a catch can and also a blow off valve, and I'm stage 2. I was thinking of getting an awe diverter valve?
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I just purchased a b5 99 1.8t. The tubing from the intake manifold to the dv was cut by accident (long story, dont ask).I replaced the dv and tubing .I want to check if the psi is correct. I dont have a boost gauge.
What are the ways to check it besides a boost gauge? I think the correct psi is around 6-8 ?
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I'm not sure what to make of this ... I disconnected the battery before installing . The gauge seems to be reading correct based on what i researched. If there was a slight leak would it throw the CEL ? is it maybe just a one time thing that needs to be cleared afterwards ? Car drives fine and I plan on trying to stop at autozone to get there crapo freebie scan . Kinda annoyed considering everything went smoothly up until I drove the car more then 50 miles .
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I have a strange problem, my boost guage needle is jumping like crazy, there is no vacuum leak and the max boost i get is 0.5 bar, when the guage needle is not jumping I get a boost of 1.4 bar. I have mechanical boost control.
97' passat B5 1.8T AEB with FMIC,K04-15,2.75",chip (that was made for the original k03).
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Okay, here's the car
AWP 1.8t mk4 GTI.
- stock DP
- Forge 007 splitter adjusted 25 clicks
- Swiss cheese stock intake with k&N high flow
- APR stage 1 93 tune.
My boost gauge is currently reading peak of about 15-16 psi. I replaces some vacuum hoses that appeared to be worn, and to no avail. I have no CEL, and no codes thrown at all. This sound like a boost leak.
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