Last post on Jun 11, 2013 at 2:53 PM
You are in the Volkswagen Jetta
What is this discussion about?
Volkswagen Jetta, Engine, Sedan
Go to NHTSA to file a safety complaint.
Or call Monday-Friday (8 am to 8 pm ET) (888) 327-4236 TTY: (800)424-9153
#171 of 304 Re: 2001 Jetta GLS 1.8T No Power 106K [Mr_Shiftright]
Mar 11, 2008 (6:50 pm)
The O2 sensors are much easier to test with a VagCom. Just plug your laptop into your VW and run diagnostics.
Dont forget that there are 2 types of O2 sensors. Some have a digital (on/off) type of output and other have an analog output. VW uses BOTH kinds of O2 sensors on some enginecodes.
If you REALLY want to test out the O2 sensors, you can collect data as you drive then graph the results on the screen when you get back home.
In the hands of a skilled user, the VagCom system can be used to efficently isolate almost any issue with your VW. I have diagnosed everything from bad MAF to burned out glowplugs and popped-off hoses. Even burned-out heated-review-mirrors can be located quickly. Faultcodes can be diagnosed and reset....etc etc.
You can even enable/disable any of the programmable options such as auto-door locks, beep when armed...etc.
#172 of 304 Re: 1996 Jetta Gl 2.0l 4 cyl [scottie0352003]
Mar 12, 2008 (5:01 am)
Update, it is the voltage regualtor wire doing this to the car.
#173 of 304 02 Jetta 1.8T with P0171 code
Mar 14, 2008 (2:47 pm)
I have a 2002 Jetter 1.8T. The check engine light keeps coming on. The code is P0171 running lean. One dealer had the car for three months replaced all kinds of parts. Carried to another VW dealer and they have replaced cat coverter, pulled the head and checked it (it was fine), have replaced several sensors and usually before we get home from the dealership the light is back on and with the same code. This time we drove the car for 166 miles before the light came back on, but it is back on again. I am getting really tired of it. It is getting very expensive. The car runs perfect, just the check engine light. Can you help me?
#174 of 304 Re: 02 Jetta 1.8T with P0171 code [autowork7456]
Mar 14, 2008 (7:23 pm)
wow, thats a lot of money to toss into it and it not fix it. Have you tried cleaning the throttle and Mass Air flow sensor. I just put 1000 into my jetta just to find out that it is the voltage regulator wire bad, and i cant find another one. Really dont want to have to go thru the dealer if i can get out of it. A nieghbor wants to trade a 2001 dodge neon for my jetta, not sure about it though.
Your problem could also be something in the fuel system too, always check the spark plugs gap too.
#175 of 304 01 VW Jetta V6 accelerator-loping and engine cutting out
Mar 16, 2008 (8:08 pm)
I have read through some of the other comments and tried the "throttle adaptation" that was discussed but it didn't really fix my problem. When I hit the accelerator my car takes off like a rocket and my tires squeal (my neighbors probably think I'm crazy) The engine seems to lope and then I loose my throttle completely. The car does not totally shut off, the throttle pedal just no longer works. This happens sometimes when I first take off and sometimes when I'm driving down the highway. Lately, it is happening non stop. I took the car into the dealer and they told me it was the MAF and oxygen sensors. The MAF has been replaced as well as both oxygen sensors and nothing has changed. The dealer also said the battery was bad so I replaced that also. I tried the "Throttle adaptation" that someone here described and it seemed to help the idle (the idle goes up and down erratically when I start the car). Does any one have any suggestions? I was going to go out and try checking on the vacuum hoses. Any input is appreciated. Also, I took the car over to Auto Zone on Friday and the following codes P1116 (Oxygen sensor heater circuit, open, P1118 Oxygen sensor heater circuit, open, P1542 Throttle actuator sensor,range or performance problem, P1545 Throttle valve actuator malfunction. Thanks to any input!!!
#176 of 304 Re: 01 VW Jetta V6 accelerator-loping and engine cutting out [jkartcrazy]
Mar 17, 2008 (5:54 pm)
Since "Throttle adaptation" did not seem to correct your problem. There is really only a couple possibilities left, (not the MAF nor O2 sensor that your dealership suggests)
The P1542 Throttle actuator sensor,range or performance problem, P1545 Throttle valve actuator malfunction. are the clues.
EIther the potentiometer in the throttle-pedal assembly or the throttle-valve actuator itself is your problem.
If you are on a tight budget, any scrapyard should have both of these components.
Personally, I would remove and throroughly clean both of these components and then do another "Throttle adaptation" BEFORE spending any money.
#177 of 304 Re: 01 VW Jetta V6 accelerator-loping and engine cutting out [bpeebles]
Mar 18, 2008 (4:18 am)
jkartcrazy, thanks for the advice, i will try this again. And the other problem is the voltage regualtor wire, it went bad and i cant seem to find the little wire anywhere.
Will let ya know how the cleaning goes.
#178 of 304 Re: 2000 VR6 JETTA ... Coolant Issue Engine Issue [ksthiebaud]
Mar 25, 2008 (6:25 pm)
For my 2000 Jetta, not VR6 but 2.0, catalytic converter was recalled and replaced by VW- I hope you didn't pay for replacement! Check into it!
#179 of 304 Re: 2000 VR6 JETTA ... Coolant Issue Engine Issue [disappointed7]
Mar 26, 2008 (6:56 pm)
Lets not forget.... on a 2000, - recall or not - ALL the emmissions-equipment is coverd for 10-years/ 100,000 miles by federal law.
The catalytic converter is part of the emmissions system and is thus covered by this federal law.
so... when we say "check into it"...we really mean READ YOUR FEDERAL EMMISSISSONS WARANTEE!!
#180 of 304 Jetta 1.8T turbo
Mar 27, 2008 (3:05 pm)
I was wondering if anybody knew the price range to get new turbo in my 2001 VW Jetta. The turbo that is in there right now is going out and is making a really nasty noise when the turbo should be kicking in. I received an estimate and they told me it would be about $1,000 to have it fixed. I was wondering how hard of a procedure is this to do and why does it cost so much? I know nothing about cars and I already had to spend about $2,800 to get it fixed because my timing belt went out and messed up all the valves... I am so disappointed.