VW

Have Volkswagen Questions? Ask an Expert Now.

Ask an Expert,
Get an Answer ASAP!

Ive got a 2.0L 1999 A3 Jetta and suspect I have a bad ignition…

Customer Question
I've got a 2.0L 1999...
I've got a 2.0L 1999 A3 Jetta and suspect I have a bad ignition coil. The coil is a TEMIC TFK 311354, VW p/n 6N0 905 104.) With the module out of the car, using a multimeter, I am getting continuity between each of the three terminals and ground/the case. Any way of checking that the module is working properly? Thanks, Doug
Submitted: 8 years ago.Category: VW
Show More
Show Less
Ask Your Own VW Question
Answered in 9 hours by:
6/26/2010
VW Mechanic: 071TCB, VW Mechanic replied 8 years ago
071TCB
071TCB, VW Mechanic
Category: VW
Satisfied Customers: 182
Experience: 8+ yrs at a VW/Audi Specialty Repair Shop
Verified
Hello,

The Power Output Stage (module) that is mounted to the coil, gets a ground signal from
the ECM at the center harness plug pin to fire the coil.

Verify that you have power & ground across the "outer two pins" of the harness plug.

Attach a test light across the center pin & one of the outer pins (#3)... while cranking
the engine, the light should flicker, indicating that the ECM is supplying ground.

graphic

If the light flickers, but you do not get spark when the plug is attached to the coil, then the
coil (or the power output stage) is no good.

If the light does not flicker when you are cranking, it could be that your engine/rpm speed
sensor is no good.

Don't accept unless you found the information helpful... if you do accept but have further
questions, post them here so that we can continue the conversation.

Thomas
071TCB
071TCB, VW Mechanic
Category: VW
Satisfied Customers: 182
Experience: 8+ yrs at a VW/Audi Specialty Repair Shop
Verified
071TCB and 87 other VW Specialists are ready to help you
Ask your own question now
VW Mechanic: 071TCB, VW Mechanic replied 8 years ago
I'm new here and could use feedback on my help.... if you have time.

I'd like to know if my input was worded such that it made sense to you (as I don't know
other peoples automotive skills).

If you were satisfied, if you don't mind, accepting the answer would adjust my statistics to
help verify my advise (to future participants) is trust worthy.

If you need further assistance, feel free to continue posting to this topic.

Have a good day,

Thomas
Ask Your Own VW Question
Customer reply replied 8 years ago

Thomas,

 

I ended up getting stranded again this weekend and had to have the vehicle towed. I wasn't able to perform your checks, but it turned out that the coil was in fact bad. It cost me $275 at the dealer (which kills me, because I could have replaced it myself for $65...) but I needed the car. So, I was never able to check your suggestions. On my own I had checked the continuity between all the pins to each other and all 3 had continuity, so I don't know what that means. It did have a spark, at time but was very weak... Thanks for your help.

 

Doug

 

P.S. I will be asking you another question concerning my a/c compressor

VW Mechanic: 071TCB, VW Mechanic replied 8 years ago
At least you'll have a receipt & warranty with the dealer coil... if it were to blow again.

Didn't get to the other question in time... just the same, as we don't service A/C at our
shop (boss has his reasons).

Check the A/C pipes going to the firewall, one should feel warm the other cold when the
A/C is on.

If yes, then the heater flaps in side the car are not directing the air correctly over the cold
element... if no heat difference, then you've got a compressor or charge issue.

Thomas
Ask Your Own VW Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a vw mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask 071TCB Your Own Question
071TCB
071TCB
071TCB, VW Mechanic
Category: VW
Satisfied Customers: 182
182 Satisfied Customers
Experience: 8+ yrs at a VW/Audi Specialty Repair Shop

071TCB 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

1,764 satisfied customers

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

Martin

Martin

auto electrical

804 satisfied customers

South African Trade Diploma in Auto Electrical

Matt

Matt

Engineer

708 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

484 satisfied customers

Have owned a repair shop for 25 yrs.

Tim Mohr

Tim Mohr

ASE MASTER TECH

419 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Chris(aka-Moose)

Chris(aka-Moose)

VW Technician

286 satisfied customers

16 years of experience

< Previous | Next >

Related VW Questions
I have a 1999.5 vw jetta vr6 and I'm having intermittent
Hello, I have a 1999.5 vw jetta vr6 and I'm having intermittent stalling problems that have gradually gotten worse. Now the car will start and run for a few minutes and die. No specific pattern, but t… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
Volkswagen Jetta TDI: I'm a tech 2011 jetta tdi,p13d5 "cylinder
I'm a tech 2011 jetta tdi,p13d5 "cylinder 3 short to ground,changed glow plugs and relay same code....… read more
Billy
Billy
Bachelor\u0027s degree
38 satisfied customers
Volkswagen Cabrio: My 2001 VW Cabrio keeps blowing coils. I
My 2001 VW Cabrio keeps blowing coils. I have put 3 aftermarket coils on the car. They lasted about 10 minutes. I ordered a used original coil from a salvage yard. It lasted for about 3 hours, the car… read more
internal88
internal88
Product Manger
Bachelor's Degree
623 satisfied customers
Volkswagen Jetta SE: How are you? I have a 2010 jetta se 2.5
How are you? I have a 2010 jetta se 2.5 that is going thru periods of rough running & just recently when it was raining stalled at an intersection. When this occurred, the wipers stopped working, and … read more
Wolfgang
Wolfgang
11 satisfied customers
Volkswagen jetta: 2014 jetta tdi manual. 2nd time in 3 weeks
2014 jetta tdi manual. 2nd time in 3 weeks the check engine light has come on in cooler weather. dealership replaced glow plug last time. heading in again on Friday. Pretty annoyed - the reason I boug… read more
chris
chris
Vocational, Technical or Trade Scho
316 satisfied customers
Volkswagen Cabrio: 1998 vw cabrio, would stall when it rained
1998 vw cabrio, would stall when it rained out. Let it set about 2 hours and running again,except the last time it never started. It rolls over and when you let off the key it will fire, a little. The… read more
Pavlin Koev
Pavlin Koev
Diagnostic Technician
High School or GED
2,687 satisfied customers
1999 Jetta: with a 2.0L 4cyl aba motor..ecu..crank sensor
I am working on a 1999 Jetta (old body style) with a 2.0L 4cyl ABA motor. I have no spark coming out of the coil. I DO have injector pulse. The ECU is seeing the RPM signal form the crank sensor (engi… read more
Jake
Jake
Audi Technician
Vocational, Technical or Trade Scho
2,110 satisfied customers
96 jetta: fuel pump..pump or dist, no start, no check engine light
96 jetta, no power to fuel pump or dist, no start, no check engine light in dash. Will pay bonus of 12 dollars… read more
Martin
Martin
auto electrical
Vocational, Technical or Trade Scho
804 satisfied customers
1998 VW JETTA: RUNNING FINE..TUNE UP..CAR WASH NOW IT WONT EVEN TRY
I HAVE A 1998 VW JETTA THE CAR WILL NOT START IT WAS RUNNING FINE I JUST HAD A TUNE UP THE CAR WAS HAVING PROBLEMS STARTING WHEN IT WAS DAMP OUT SIDE OR RAINING OR IF I WENT THOUGH A CAR WASH NOW IT W… read more
VWDoc
VWDoc
Independent VW Shop owner
Bachelor's Degree
1,764 satisfied customers
Jetta: cranks..wont start..Replaced coil pack (it has a 6 pin).
i have a Jetta 2000, cranks but won't start. Replaced coil pack (it has a 6 pin). I had ordered one that had 4 pins, I had to return it. Check pin #1, it has voltage, Could it be a bad coil pack? The … read more
vwtech0405
vwtech0405
VW Technician
Associate Degree
8,868 satisfied customers
97 vw jetta: It runs ok but it stalls or dies easily...o2 sensor
I have a 97 vw jetta with 2.0 gas engine. It runs ok but it stalls or dies easily. the upstream o2 sensor is .6 volts and the down stream is around .3 volts. I'm getting code p0102 and pending p1613. … read more
Scott
Scott
Auto Repair Tech, Mechanical and Body
High School or GED
8 satisfied customers
3 golf: mk..Cab..which has a problem with rough idle it..driving along
I have a mk 3 golf 2.0 8v Cab which has a problem with rough idle it also has a problem with juddering as you are driving along I believe that it may be connected to a fuel problem any ideas?… read more
VWDoc
VWDoc
Independent VW Shop owner
Bachelor's Degree
1,764 satisfied customers
1996 Volkswagen Cabrio: Convertible..Interstate..engine died..crank
I have a 1996 Volkswagen Cabrio Convertible 2.0 engine. After exiting off the Interstate this afternoon, my wife came to a light and the engine died. It will crank but will not start. After getting it… read more
vwbugman
vwbugman
Shop Manager / co-owner
Bachelor's Degree
820 satisfied customers
2003 jetta: intermittent engine light..scanner..malfunction..coil
Hello- Got a 2003 jetta, 93k on it, 2.0l. I've been getting an intermittent engine light that recently became permanent. Hook up a scanner and I get ignition module primary/secondary malfunction x4, o… read more
David
David
Shop Foreman / Lead Technician
ASE Master and L1+ VW Master Techni
2,315 satisfied customers
Im am working on an 02 passat w8 4 motion. The cooling fans
I'm am working on an '02 passat w8 4 motion. The cooling fans were on and staying on high all of the time and would stay on when the engine was keyed off. If keyed on then off again they would slow do… read more
vwnewton
vwnewton
VW Owner,ASE Master and L1 Advanced
A.S.E. L1 Master and more
307 satisfied customers
1986 VW Cabriolet: I tried a new coil..recently replaced
I have a 1986 VW Cabriolet which will turn over, but there is no spark getting through the coil. I tried a new coil and still have no spark coming out of it. The ignition control module was recently r… read more
Danny
Danny
Owner, lead mechanic
High School or GED
3,963 satisfied customers
1999 VW Cabrio: Car alarm beeps three times..Seems to happen randomly.
1999 VW Cabrio, design #2. Car alarm beeps three times while driving. Seems to happen randomly. I've had the driver's door apart to replace broken door lock cylinder parts that connect to the locking … read more
gomi_otaku
gomi_otaku
Auto Technician (dealership)
Vocational, Technical or Trade Scho
2,229 satisfied customers
1999 VW Jetta: malfunctioning..Anti theft system..a way to disable it
CAn anyone help me with my 1999 VW Jetta and the malfunctioning Anti theft system? I can get it started without it going off as if I were stealling my own car? Is there a way to disable it?… read more
David
David
Shop Foreman / Lead Technician
ASE Master and L1+ VW Master Techni
2,315 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