View Full Version : Do I have a blown turbo?

12-03-2006, 12:21 AM
ok so this is what happened. around 11 pm i went out with my giirl and some other friends to a club. on our way over there my car was boosting normal, no problems whatsoever. right now i am not running an N75, its already in the mail, should be getting it by tuesday. but proceding, we get there after like 25 miles of driving, let it cool down for like 2-3 minutes, we were driving pretty fast, not crazy fast, proably like 10-15 miles over the speed limit. get there let it cool down and turn it off. at 3 am going back home, i start the car, mufflers was sounding different, i`m like WTF is wrong with this muffler? when i left the parking garage, i pressed on the gas and car is not boosting at all, when i get to the highway i floor it to see what happens and it only boost up to like 2-3 psi. what the hell is going in with my car. could it be a blown turbo? turbo had like 60k miles, i bought it from a local guy.

12-03-2006, 12:29 AM
would ur car even run if the turbo was blown?

12-03-2006, 12:36 AM
boost leak maybe?

12-03-2006, 12:44 AM
no symtoms of it being blown before? what was the shape of it when you put it in? any white or gray smoke coming from the tailpipe or the turbo wasn't making any strange noises prior to going out?

usually these are the symtoms or reminents of a blown turbo, plus your car would have a hard time moving with a blown turbo. if none of that has happend then i think that your turbo is fine.. it is probably a MAJOR boost leak or may have some thing to do with your wastegate considering you're not even running an N75

12-03-2006, 01:50 AM
I think my turbo's blown and seized every time I drive it.

12-03-2006, 06:25 AM
your not runing an n75 valve so it is possible that you over boosted the car. i take it you have a boost gauge, what was the highest the boost spiked when you were driving?

12-03-2006, 06:57 AM
so the n75 is not pluged in is that correct? when my friends N75 valve was not pluged in the car wouldnt boost his was a 98, the n57 has to be atleast pluged in, if your old one broke just plug it in and leave it off to the side.. what do you have inplace of the N75?

12-03-2006, 07:26 AM
Originally posted by johnnybravoa4
so the n75 is not pluged in is that correct? when my friends N75 valve was not pluged in the car wouldnt boost his was a 98, the n57 has to be atleast pluged in, if your old one broke just plug it in and leave it off to the side.. what do you have inplace of the N75?

yeah, if your N75 isn't plugged in, your car will not boost. my car had 0 boost and i found out the wire going to my N75 had been sheered off. a little solder and i was good to go. this is on a '97.

12-03-2006, 08:26 AM
i dont have a n75 valve at all in the car, since i had a t28 before, i decided to sell it and put back to stock, so the shop (fvcking idiots) that i took the car to have it installed (t28) before, never gave me the n75 back, so since right now i went back to k03, it was running without a n75. without the n75 i could go up to around 15lbs. the turbo had no weird noices at all. i just put it in a couple of weeks ago, maybe a month. right now car moves without a problem, is just that with no power.

12-03-2006, 08:39 AM
check the basics - blown hoses, boost leaks, ICM, Maf.

12-03-2006, 10:04 AM
how would i check for the ICM? maf is new i out it in around the same time as turbo.

12-03-2006, 10:06 AM
had the same exact problem the wastegate went now i have no boost and can hear it flopping around. BT time baby[wrench]

12-03-2006, 06:34 PM
i will check for any boost leaks tomorrow at work, and i wil keep you informed. if it is the turbo, i guess i`ll have to ask for a loan (mother) to go BT...YEAHHH BABY!!!!

12-03-2006, 06:37 PM
didn't you have a BT but swapped it out?

12-03-2006, 06:44 PM
that was a "custom" bt set up, that was giving me a headache. now i want a BT kit by ATP.

12-03-2006, 08:30 PM
^^good luck on not getting a headache from that

12-04-2006, 09:44 AM
checked all vacuum hoses, and intercooler hoses, and everything looks good. N75 valve arrived today, got it on and still no boost. when i was driving to work i floored it and it was just boosting like no more than 2-3 psi. no smoke is coming out the exhaust, no oil or coolant lines are broken, no leaks at all. i am going to try the "tennis ball" procedure to see what happens.

12-04-2006, 09:50 AM
sh!t, i dont have anything to tho the tennis ball method to check for leaks. if i take it to a performance shop, will they be able to do it?

12-04-2006, 10:03 AM
try disconnecting the battery for a few hours then do a TBA and see what happens... maybe you just over boosted and need to rest it.

12-04-2006, 10:18 AM
first of all do you have an exhaust leak?

12-04-2006, 10:27 AM
I'm going to guess you have an exhaust leak. In fact, I'll go farther out on the limb and say it's a leak at either the mani to head or mani to exhaust housing(possibly both!). Both/either of those would cause a big loss of boost.

12-04-2006, 11:18 AM
i will check for any exhauste leaks. if not i`ll disco the battery.

12-04-2006, 09:26 PM
checked all bolts that hold mani to head and to turbo, and all are tights, no exhauste leak sound was happening when car was on. today on the highway, with enough space, i was flooring it and at aroud 5.5 to 6000 rpm`s boost was a around 4 psi on all gears. today i turned it on and reved it from the engine comp. by hand and turbo sounds like needs more incoming air, like when you put a plastic bag over your head and cant breath well. you thing it has to do with the inlet pipe or maybe the filter?

12-05-2006, 05:47 AM
just a thought, what diverter valve do you have?

12-05-2006, 07:48 AM
forge 007 with the green spring.

12-05-2006, 08:48 AM
check that the clip that holds the throttle cable is in place, mine went awol and took 10 psi with it, was only 32pence for a new one, you cant beat the cheap easy fixes.

12-05-2006, 11:21 AM
you mean by the intake manifold? throttle body?

12-05-2006, 11:27 AM
yup, intake mani, clip there, mine was only pulling the tb open a little and only got 5psi

12-05-2006, 12:50 PM
what clip exactly you are talking about. can you show a pic? i will check that right now.

12-05-2006, 01:51 PM
you need a log of the car, snoop is referring to the plastic clip that routes the throttle body cable over the intake manifold

12-05-2006, 02:21 PM
where can i do a log of my car.

12-05-2006, 06:07 PM
so what are you using to control your boost, I'm assuming you have a manual boost controller

12-05-2006, 06:17 PM
Originally posted by pipe7284
where can i do a log of my car.

you need a laptop w/ vag-com software and a obd 2 compatible vag com cable.

12-05-2006, 07:19 PM
94jedi: i would have to fgo to an audi/vw preformance shop to have it done.

aaronamerica: negative.

12-05-2006, 07:32 PM
yea i dont think that you got a blwon turbo cuz you would see smoke and your turbo would be making noise too.

did you try running that lit hose that comes off the turbo the the wastegate directly. when i got my car i think that how the idiot had the car set up and he pulled out the n75 valve. the guy was fuvking stupid. if you try this dont drive your car for too long cuz your putting max boost.

12-05-2006, 08:28 PM
^^^^^no i was no running it like that. there was nothing connected to the wg nor the little banjo fitting at the turbo housing.

12-05-2006, 08:32 PM
ohh sorry i was asking you if you tryed running your car like that? you mingt try it and see what happens.

12-06-2006, 07:06 AM
^^^^i`ll try that.

12-06-2006, 07:49 AM
you said the muffler sounded different... major exhaust leak?

12-06-2006, 09:46 AM
^^^i turned the car on and went to check the engin compartment to see if i could hear any exhaust leaks, and everything sounds normal, except at the muffler end. sounds like a damn ricer, like your frying something in there.

12-06-2006, 01:10 PM
went to scan it with the little obd II scanner at autozone and the codes that came back where:
P1198--manufacturer control fue and air metering
P0102--MAF circuit low input.

and others about the cat and o2 sensors. i dont have the anti fouler mod. so i understand that one.

12-07-2006, 07:53 AM
can any one help me with this codes?

12-07-2006, 07:56 AM
your MAF sensor is gone. get a new one. 94 jedi has one

12-07-2006, 08:20 AM
^^^i had just replaced it with a new one. they go out that fast? is there any way to clean it or something. if so with what and how,

Audi A4 1.8T
12-07-2006, 08:30 AM
where did u purchase the maf? i just got a new maf and now my car is doing the same thing. mine came from an audi dealer

12-07-2006, 08:32 AM
Originally posted by bitterchild
your MAF sensor is gone. get a new one. 94 jedi has one

bitterchild, thanks for the plug!

pipe- I do have an AEB MAF if your interested...in fact, it's nearly new. I bought it from another member here who bought it new but never used it. I then had it on my car about 2 months. Let me know via pm if you need it.

Also, you can try to clean your maf and maybe clear the codes and see if they come back. The maf cleaning procedure is something like this: put your maf in a big ziploc bag, put in about 1/3 of a bottle of rubbing alcohol in the bag and swish it around (gently) for a few minutes.....then let it air dry.

12-07-2006, 09:15 AM
^^^^ok, thanks, i`ll try cleaning first before deciding to get a new one, if needed.

12-07-2006, 09:20 AM
talking to Ado (AZ member) via pm, stated that he had same symptons when his wastegate decided not to move anymore. do you think it could b my wastegate that is acting up? other than reving the engine to high rpm's, is there any other way to check for wastegate malfunctioning?

12-07-2006, 09:30 AM
no boost is a very vague problem, with many causes. don't jump to conclusions.

your car is literally telling you that you have a bad MAF sensor. listen to it.

if your MAF sensor is bad, youre probably in limp mode because the car doesnt want to hurt itself. so it will lower boost.

as far as your weird sound in the muffler, maybe someone threw something inside your exhaust when you were at the club?

Audi A4 1.8T
12-07-2006, 10:23 AM
pipe im haveing same prob now . i just put a new maf in monday and it started acting up. i have no cel though. i havent replaced the L pipe yet, nor the TIP. maybe thats my source. Have you replaced your t inlet pipe yet

12-07-2006, 10:50 AM
callm e ignorant but where and wht does the L pipe and TIP? do.

Audi A4 1.8T
12-07-2006, 11:46 AM
the l pipe is a little l shaped hose that runs right where your in take manifold is, do a search and youll find millions of topics on it, they tend to give out and cause big boost leaks, the tip is a turbo inlet pipe, which is where your n75, air filter, dv all run into, looks like a ginseng root.

12-07-2006, 12:10 PM
^^^^ooooohhhhh..... well i know the inlet pipe just not by TIP, i`ll look for the L pipe. thanks.

12-11-2006, 09:52 AM
well the other day my car was throwing white smoke from the muffler. smoke=blown turbo, but it doesnt do it all the time, and is boosting up to 3-4 psi, here is a lilttle vid of WOT and only boosting 3-4 psi.

http://i127.photobucket.com/albums/p148/pipe7284/th_STP60188.jpg (http://s127.photobucket.com/albums/p148/pipe7284/?action=view&current=STP60188.flv)

12-11-2006, 05:58 PM
well did you clean your MAF sensor? vag it again and see if you get the same codes.. if so they you need to buy a new one.. 94jedi's from the looks of it [:)]

12-13-2006, 10:29 AM
cleaned my MAF sensor and still doing the same thing. is it the wg?

12-13-2006, 11:10 AM
felipe, I've still got the MAF if you need it. Did you get the maf code cleared and then get it rescanned? The WG may ultimately be the issue but from the code your car is throwing, it seems that the maf is toast, either way.

12-13-2006, 11:37 AM
^^^ok, let my scan it again and see what happens. if it show that the maf is fryed, i`ll take yours.