VW

Have Volkswagen Questions? Ask an Expert Now.

Ask an Expert,
Get an Answer ASAP!

VW

BEETLE: TURBO..EPC and ASR lights..Dealers..Throttle Body..Lights come

Customer Question
2001 NEW BEETLE TURBO Check...
2001 NEW BEETLE TURBO Check engine, EPC and ASR lights keep coming on. Been to 2 different Dealers several times and they changed the Throttle Body and adjusted things but always the same answer we don't see any thing wrong. They reset the system then the Lights come back in a few days to a few weeks. When the lights come on the car may or may not run rough or stall. I let it sit overnight and the lights go off except the check engine light. Then in a day or so it happens again. Then Back to the Dealer where it runs great except for the check engine light is on and they say all we can do is reset it. Any input would be appreciated
Submitted: 7 years ago.Category: VW
Show More
Show Less
Ask Your Own VW Question
Answered in 7 minutes by:
3/22/2010
VW Mechanic: Cardoctor74, ASE Certified Technician replied 7 years ago
Cardoctor74
Cardoctor74, ASE Certified Technician
Category: VW
Satisfied Customers: 25,968
Experience: Certified to fix all makes and models
Verified
Do you know what the codes are that were stored for the lights?
Ask Your Own VW Question
Customer reply replied 7 years ago
P0102 was the only one I know of but they said it checked fine
VW Mechanic: Cardoctor74, ASE Certified Technician replied 7 years ago
OK the code p0102 is a problem with the Mass air flow circuit.Has this been checked?The EPC light comes on with the check engine.Usually The faulty throttle body would take care of these issues.Have seen these codes come back and need an engine harness and that would need to be checked next.These are what they need to check next.

Hoped this helped.

Positive feedback and bonuses greatly appreciated.
Ask Your Own VW Question
Customer reply replied 7 years ago
Like I said all has been checked. I was hoping for somone who seen this exact problem and had an answer. I have read online other peoples same problems but never an answer except vague ones. Thank for your time anyways
Customer reply replied 7 years ago
sorry
VW Mechanic: gomi_otaku, VW Technician replied 7 years ago
gomi_otaku
gomi_otaku, VW Technician
Category: VW
Satisfied Customers: 3,466
Experience: VW FastTrack '00-'01, VW Academy Chicago and Seattle '00-present, VW Certified
Verified

When it is exhibiting the symptoms, unplug the Mass Air Flow sensor and see it it runs better- this reverts it to a "mapped" input in the ECM instead of relying on the MAF signal. The EPC, CEL, and ASR (assisted steering response) lights all come on because this deals with torque distribution (working together with the ECM, ABS, and TCM- if you have an auto trans)

If it runs better replace the MAF

Ask Your Own VW Question
Customer reply replied 7 years ago

Thanks for trying but I actually tried that on my own with no change.

VW Mechanic: gomi_otaku, VW Technician replied 7 years ago

Ok- so other things that can cause a "low input" at the MAF are that there is an unmetered air leak after the MAF somewhere- vacuum lines are most common, but also the rubber hoses in the PCV system (under the intake manifold, and the "Y" pipe at the end of the valve cover. The "vacuum amplifier" under the intake manifold also tends toget clogged up, it is a black plastic cylinder with a rubber hose from each end (one end to the underside of the intake manifold), and one more at an angle from the middle.

Worse case scenarios are that you have a wiring issue (will need to overlay the wires from the ECM to the MAF, I have had to do this a few times so far this year) or that you actually have a bad ECM (highly unlikely, more likely to be the wiring

Ask Your Own VW Question
Ask gomi_otaku Your Own Question
gomi_otaku
gomi_otaku
gomi_otaku, VW Technician
Category: VW
Satisfied Customers: 3,466
3,466 Satisfied Customers
Experience: VW FastTrack '00-'01, VW Academy Chicago and Seattle '00-present, VW Certified

gomi_otaku is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

Meet the Experts:

vwnewton

vwnewton

VW Owner,ASE Master and L1 Advanced

307 satisfied customers

25 years of VW obsession turned into a job, last 15 years as a VW Tech.

VWDoc

VWDoc

Independent VW Shop owner

1,738 satisfied customers

20 years of experience working with VW's. Independent European shop owner and technician.

Martin

Martin

auto electrical

776 satisfied customers

South African Trade Diploma in Auto Electrical

Matt

Matt

Engineer

683 satisfied customers

Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

482 satisfied customers

Have owned a repair shop for 25 yrs.

Tim Mohr

Tim Mohr

ASE MASTER TECH

411 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Chris(aka-Moose)

Chris(aka-Moose)

VW Technician

274 satisfied customers

16 years of experience

< Previous | Next >

Related VW Questions
I need a code for my VW 1999 GolfGLRalky GL. No thanks you
Hi I need a code for my VW 1999 GolfGLRalky GL JA: Okay, I'll connect you to the mechanic to go over that information regarding your Volvo GL. Before I do, is there anything else you want him to know?… read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,420 satisfied customers
Well im not sure. we replaced the fuel pump the fuel pump
well im not sure. we replaced the fuel pump the fuel pump relay the crank position sensor the coil pack, and still no spark. i have a 97 vw jetta … read more
Todd M
Todd M
Owner
ASE Certification
1,487 satisfied customers
Code on my VW Golf Radio 1999 Volkswagen GL5 Hatchback and I
Code on my VW Golf Radio 1999 Volkswagen GL5 Hatchback and I had a battery put and not Radio… read more
eurotec
eurotec
Vice President / Manager
Associate Degree
11 satisfied customers
My climate controller doesn't blow air on any level. About a
My climate controller doesn't blow air on any level … read more
Eurocar Inc
Eurocar Inc
Master Audi/VW Tech
Associate Degree
1,773 satisfied customers
Chech engine light has been on since i got the car, p0341
chech engine light has been on since i got the car, p0341 have replaced camshaft positon sensor , coolent temp sensor, all timing parts and cooling system. … read more
Eurocar Inc
Eurocar Inc
Master Audi/VW Tech
Associate Degree
1,773 satisfied customers
Just finishing replacement of the brake master cylinder and
just finishing replacement of the brake master cylinder and brake booster. When i reconnected the battery, the brake tail lights came on & stay on. I messed with the switch on the brake pedal, but pus… read more
Eurocar Inc
Eurocar Inc
Master Audi/VW Tech
Associate Degree
1,773 satisfied customers
Well when he warms up it won't shift into 3rd 4th 5th or 6th
Well when he warms up it won't shift into 3rd 4th 5th or 6th Gear it's lips … read more
Martin
Martin
auto electrical
Vocational, Technical or Trade Scho
776 satisfied customers
2011 JEDDA SE (GAS) window washer pump/wiper blades combo
2011 JEDDA SE (GAS)window washer pump/wiper blades combo not operating.Wiper blades operate when used independently. Tried to use pump and fluid did not come out but could hear pump while i was drivin… read more
Kevin
Kevin
workshop foreman /master tech/mot tester
0 satisfied customers
All my instrument trouble lights are on in my 2014 VM Jetta
all my instrument trouble lights are on in my 2014 VM Jetta SE, Cannot reset them … read more
Eurocar Inc
Eurocar Inc
Master Audi/VW Tech
Associate Degree
1,773 satisfied customers
Just replaced the inner CV boot of my 06 TDI golf. i have a
Just replaced the inner CV boot of my 06 TDI golf. i have a vibration coming from the front passenger side that I assume is related to the boot change. Not sure of the cause. Nil adjustment to tie rod… read more
Eurocar Inc
Eurocar Inc
Master Audi/VW Tech
Associate Degree
1,773 satisfied customers
I need fuse box layout and fuse # for low beam headlights on
I need fuse box layout and fuse # for low beam headlights on 2012 vw beetle … read more
Eurocar Inc
Eurocar Inc
Master Audi/VW Tech
Associate Degree
1,773 satisfied customers
I can't identify fuses on my Jetta. But I can't find
Yes but I can't find anything related to fuses diagrams … read more
Kevin
Kevin
workshop foreman /master tech/mot tester
0 satisfied customers
Tengo un golf 2.0 4 mk4 2001 prende muy bien pero al
Tengo un golf 2.0 4 mk4 2001 prende muy bien pero al acelerarlo estando parado no sube más de 3000 revoluciones y también cuando lo estoy corriendo me hace lo mismo y como es automático no me hace los… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
My check engine light is flashing and my car shakes a little
My check engine light is flashing and my car shakes a little when in park … read more
Kevin
Kevin
workshop foreman /master tech/mot tester
0 satisfied customers
Did a smoke test, smoke coming from between engine and
did a smoke test, smoke coming from between engine and transmission vehicle is a 2009 golf gti … read more
Cesar Jimenez
Cesar Jimenez
Owner/CEO
Vocational, Technical or Trade School
108 satisfied customers
2012 passat 2.5l low oil pressure. installed a mechanical
2012 passat 2.5l low oil pressure. installed a mechanical gage. reads approx 15 lbs. at warm idle. … read more
Eurocar Inc
Eurocar Inc
Master Audi/VW Tech
Associate Degree
1,773 satisfied customers
Alarm system on my 2013 VW Jetta 2.5SE is locked on and I. I
Alarm system on my 2013 VW Jetta 2.5SE is locked on and I … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,442 satisfied customers
I hear a light rattling sound around the top of the engine
I hear a light rattling sound around the top of the engine that may be a timing chain problem but I don't know how to test it. I checked the belt tensioner and it is fine. … read more
Matt
Matt
Engineer
Bachelor's Degree
683 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x