Topic: 1.8t 02 sensors (Read 756 times)

armydub01 · « **on:** October 13, 2009, 07:34:35 PM »

pretty sure mine are bad, anyone know how to test them?

yokust · « **Reply #1 on:** October 14, 2009, 11:54:58 AM »

Do you have a fault for o2 sensors? If not, they are not bad. Test complete

SwiftMKIII · « **Reply #2 on:** October 14, 2009, 12:08:21 PM »

Quote from: armydub01 on October 13, 2009, 07:34:35 PM

pretty sure mine are bad, anyone know how to test them?

use an obd2 scanner or Vag-com.

I have a generic OBD2 scanner if you bring it out Saturday night.

armydub01 · « **Reply #3 on:** October 14, 2009, 04:38:04 PM »

yeah i have the auto zone obdll also. I'm throwing code p2179. I found a write up on the vortex that said o2 sensors can throw that code, and well I'v done pretty much everything else. I'v been finding out my engine was neglected. almost all my vac and pcv lined were blown the stock dv was bad, along with a list of other odds and ends shit iv fixed. So any other ideas would help. thanks

mikeminnillo · « **Reply #4 on:** October 14, 2009, 06:39:00 PM »

its a 1.8t. youre pretty much fucked.

yokust · « **Reply #5 on:** October 14, 2009, 07:31:14 PM »

Did you ever replace the maf with a BRAND NEW DEALER MAF

Not some used shit box you got online, or some aftermarket one

Everytime you were asked this question you would never answer

armydub01 · « **Reply #6 on:** October 15, 2009, 02:38:03 PM »

never out of the box, it was lightly used. But i cant see 2 different maf's causing the exact same problem. The chances of that are slim to none.

armydub01 · « **Reply #7 on:** October 15, 2009, 03:27:06 PM »

I have another issue just wanted to bring up. i have been noticing black spray in my driveway, like my exhaust blowing unused oil. I have not noticed any smoke, but with side exit exhaust i might not. I also have a test pipe but its been on for a while and this is the first time iv noticed it. So is this normal with a 1.8t?

yokust · « **Reply #8 on:** October 15, 2009, 06:52:02 PM »

Do you have a program for your test pipe?

And yes, as stated many and many of times to you before. Used mafs are normally bad. They have many supersessions in the dealer for a reason. Buy a new one you freaking tard

armydub01 · « **Reply #9 on:** October 15, 2009, 08:31:26 PM »

no test program for test pipe, but not throwing a code. sorry guy but im convinced that 2 different maf's cant throw the same code thats not maf related, i just don't see it happening

yokust · « **Reply #10 on:** October 15, 2009, 10:49:53 PM »

And thus why your check engine light is still on

yokust · « **Reply #11 on:** October 15, 2009, 10:55:33 PM »

But nonetheless

You cannot chase a problem with something in the system that is not ok by the computer.

A test pipe can cause lots of issues that you are having, not just cause a cat fault. Remember rear O2 sensor on vw/audi cars has main control over fuel mixture. If its not seeing correct values per the program, it is going to try to adjust and can cause other issues

armydub01 · « **Reply #12 on:** October 16, 2009, 04:21:02 PM »

yeah as far as the code I had that issue before i put the downpipe on

yokust · « **Reply #13 on:** October 16, 2009, 05:19:59 PM »

Well since you are not smart enough to firgure it out or take advice

Take it and have it looked at by a real tech

I still put money either vacuum leak or maf

armydub01 · « **Reply #14 on:** October 16, 2009, 11:31:21 PM »

as soon as decent advice I'll take it, haha real tech i rebuild turbine engines for a living so suck a dick

Smokestack · « **Reply #15 on:** October 17, 2009, 07:38:20 AM »

Quote from: armydub01 on October 16, 2009, 11:31:21 PM

as soon as decent advice I'll take it, haha real tech i rebuild turbine engines for a living so suck a dick

It's better than decent advice, you just have your head stuck too far up a turbines ass to see it. Just because you know how to work on turbine engines doesn't automatically make you an expert on Volkswagen engine management. The Bosch ECU needs accurate readings from the MAF sensor to work properly. If you have the wrong one (1.8ts used a couple of different ones) then it'll throw codes and run like shit. If you have a leak somewhere after the MAF, it'll throw codes and run like shit. The things you should do is: 1) get a smoke test to check for intake leaks and 2) go to the dealership, give them your vin number and tell them you need a new MAF sensor. You can throw your money at new O2 sensors, but if your car has less than 200k miles and they're actual Bosch's and not el cheepos then the likelihood of the sensors being bad is slim.

So if you want good advice, ask for it and act on it. If you want to listen to advice on Vortex, good luck with that one. There's some good info on there, but you have to shift through a lot of shit to get to it.

yokust · « **Reply #16 on:** October 17, 2009, 07:49:50 AM »

Quote from: armydub01 on October 16, 2009, 11:31:21 PM

as soon as decent advice I'll take it, haha real tech i rebuild turbine engines for a living so suck a dick

So those turbine engines run bosch ME7 management? Than you should have no problem firguring this out. And why are you looking for advice from local forum people if you are such a real tech.

You seem just like an average lawn jockey, so shove that huge turbine engine in your ass where it belongs and let real techs fix your car

MileHighAssassin · « **Reply #17 on:** October 17, 2009, 10:22:02 AM »

Pretty simple test for the MAF is to unplug it. If nothing changes with the car, the MAF is probably dead. When a MAF dies the ECU will automatically go into a safemode and use stored fuel maps. It will basically use an ultra rich fuel map.

yokust · « **Reply #18 on:** October 17, 2009, 10:28:25 AM »

Quote from: MileHighAssassin on October 17, 2009, 10:22:02 AM

Pretty simple test for the MAF is to unplug it. If nothing changes with the car, the MAF is probably dead. When a MAF dies the ECU will automatically go into a safemode and use stored fuel maps. It will basically use an ultra rich fuel map.

Nope that is wrong. THat will only affect if the maf is totally dead and not reading at all. If its just reading of spec unplugging it will cause other faults and not determine what is the problem

armydub01 · « **Reply #19 on:** October 17, 2009, 05:45:12 PM »

ok guy we get you know fucking everything

yokust · « **Reply #20 on:** October 17, 2009, 05:54:41 PM »

It does come from working as a tech on these cars for 12yrs at the dealer

I am not guessing.

There is only two things that can cause that fault in reality. Vacuum leak is first, MAF is second

Barry · « **Reply #21 on:** October 18, 2009, 06:39:03 AM »

Quote from: armydub01 on October 17, 2009, 05:45:12 PM

ok guy we get you know fucking everything

He does know what he is talking about... if you get it, why act like such a dick towards him when he is trying to save you time and trouble with your car?

And you rebuild turbine engines for a living? Hah.... More like you replace oil and air filters on helicopters when you are not in the motorpool, or worse..... We have a very large military / prior military base in this group.... We know the deal.... Dont try to talk shit about your career in the Army like you are qualified to put Troy down.....

armydub01 · « **Reply #22 on:** October 18, 2009, 09:11:14 AM »

actually i work on tanks, and you wanna call bull shit come down to my motorpool anytime you want

Barry · « **Reply #23 on:** October 18, 2009, 01:34:21 PM »

tanks... helicopters... the point is the same regardless.

yokust · « **Reply #24 on:** October 19, 2009, 07:20:02 AM »

Quote from: armydub01 on October 18, 2009, 09:11:14 AM

actually i work on tanks, and you wanna call bull shit come down to my motorpool anytime you want

I still call bs on you.

I bet if we come down there, your just the bitch who cleans the techs hands who actually work on them, maybe you even get to wipe the sweat from their eyes if your lucky

Southcross · « **Reply #25 on:** October 19, 2009, 08:15:15 AM »

maybe its your wastegate... your turbo isn't creating enough vacuum to open it up

yokust · « **Reply #26 on:** October 19, 2009, 08:28:27 AM »

you know wastegates on a gas car work off pressure not vacuum right?

Smokestack · « **Reply #27 on:** October 19, 2009, 08:54:22 AM »

Quote from: yokust on October 19, 2009, 08:28:27 AM

you know wastegates on a gas car work off pressure not vacuum right?

He's just quoting something dude said in the shout box awhile back. Might be another reason his car runs like shit. Probably plumbed the waste gate into the vacuum pump.

yokust · « **Reply #28 on:** October 19, 2009, 09:11:26 AM »

Oh well it is propably that than

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