2001 Jetta 1.8T Check engine light. wrong Diagnoses

Asked by Apr 01, 2011 at 05:35 PM about the 2001 Volkswagen Jetta GLS Wolfsburg Edition

Question type: Maintenance & Repair

Please help with my problem. I have taken to VW dealer repeatedly but they never diagnose correctly. I have had 3 mass air sensors, a thermostat, temperature sensor, the computer software updated and a catalytic converter put on the car but the light comes back on. Sometimes within a few days but usually a few weeks. I asked to have the car checked for a leak in the air intake system somewhere between the filter and the engine but they did not find a leak. The mechanic said he did find a "ghost code" of a leak but I am guessing that is a guess?!?! I no longer have ANY confidence in the dealer.  The problem does seem to be moisture related as the light seems to come on during rainy days and once simply pulling out of a wet wash bay?!? Is this possible? PLEASE! there must be knowledgeable VW mechanic out there somewhere!!

2 Answers

75

Volkswagens are notorious for having major electrical issues. You didn't mention if the vehicle was running rough, or having issues starting. If the vehicle is runing great but the light just keeps coming on, I would put money on the fact that it is just an electrical issue that will not cause any harm. All the items that you have replaced so far would have caused the vehicle to run rough, stall out or have issues running if they were defective. The dealer should have known that and if I were you I would raise hell to them. However, if you are having engine issues then it is possible that the you will never find the problem. Volkswagen are very poorly designed electrically and the VW dealers know this. I have no confidence in any VW dealership. They will charge you just to tell you how much money it will cost you to fix the issue, and 95% of the time the issue goes unresolved. It is a Volkswagen thing. And yes to answer your question, more than likely moisture is the cause. I am currently battling to find out the issue with my 2001 Cabrio. My sister spent more than 6 trips to the Auto Shop and over $2000 until her issue was resolved, luckily it has not had a problem since. It ended up they had to replace the ground wire and Battery Cable. Good luck to you and let me know if your having engine issues, or if it is just the light.

1 out of 1 people think this is helpful.
10

I recently had this same problem with my 2006 Jetta. Fortunately for me I fix it be for the problem go any worse. There are many sensors though out the air Intake that can pick up on the influx of air movement to the engine and from the engine. There are many seals that connect the air intake and if a seal goes bad it allows misfire into the air intake. So I would suggest you check these seals and insure all parts of the air intake are fitting properly. I would try doing your own test. Go to the hardware store an pick up what is called pick up what is called powder smoke. They us this to find small draft in homes. In theory you should be ale to use this to check for leaks in the air intake as well. Just be easy on the powder.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Volkswagen Jetta Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Volkswagen Jetta Experts

#1 FordNut
FordNut
Reputation 2,150
#2 Goodwrench707
Goodwrench707
Reputation 2,040
#3 Deathjam4
Deathjam4
Reputation 1,400
View All

Related Models For Sale

Used Volkswagen Passat
238 Great Deals out of 22,123 listings starting at $1,499
Used Honda Civic
818 Great Deals out of 69,470 listings starting at $1,200
Used Volkswagen GTI
115 Great Deals out of 6,188 listings starting at $1,499
Used Honda Accord
966 Great Deals out of 74,563 listings starting at $899
Used Volkswagen Golf
39 Great Deals out of 2,788 listings starting at $1,500
Used BMW 3 Series
1,449 Great Deals out of 38,302 listings starting at $1,495
Used Toyota Camry
1,168 Great Deals out of 95,513 listings starting at $1,250
Used Toyota Corolla
949 Great Deals out of 66,819 listings starting at $1,595
Used Audi A4
320 Great Deals out of 12,086 listings starting at $950
Used Nissan Altima
1,026 Great Deals out of 82,431 listings starting at $670
Used Volkswagen Beetle
227 Great Deals out of 8,738 listings starting at $1,800

Used Cars For Sale

2017 Volkswagen Jetta For Sale
14,282 listings starting at $12,779
2016 Volkswagen Jetta For Sale
29 Great Deals out of 1,331 listings starting at $10,252
2015 Volkswagen Jetta For Sale
81 Great Deals out of 3,467 listings starting at $8,037
2014 Volkswagen Jetta For Sale
120 Great Deals out of 3,563 listings starting at $6,400
2013 Volkswagen Jetta For Sale
92 Great Deals out of 2,391 listings starting at $6,270