Last post on Feb 07, 2013 at 1:54 PM
You are in the Volkswagen Jetta
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Volkswagen Jetta, Sedan
#5982 of 6629 2000 Jetta GLS 2.0 runs rough once it's warmed up... dies while driving...
Feb 18, 2009 (6:40 pm)
I've owned this car since 2002 and its always had the first issue (running rough after reaching driving temp), however it's become WAAAAAY more frequent in the past year. I took it back to VW SEVERAL times in the first couple years and was told 1. vacuum leak... "fixed". 2. faulty MAF "fixed"-once by VW and again by us (after purchasing an OBD II scanner and having that code come up again, and again). and 3. "there's and intermittent fault, but we can't determine what's causing it". So I gave up taking my car to VW for ANYTHING because they weren't doing me any favors. Upon doing some of our own research, we decided to change out the temp sensor and the coil and neither of those have fixed anything. We've kicked around changing out the water pump, but that seems pretty invasive and we're not convinced that's the problem. There are also some prominent electrical issues- radio/accessory lights don't work, glove box light doesn't work, headlight alarm doesn't work, the temp gauge ALWAYS reads 190, door lock (rear driver's side) doesn't work, alarm light doesn't blink, etc. We've checked the fuses and they're all fine. Are these things related to each other and/or the running issue? Can anyone tell me what's causing the rough running/dying after warmed up?? Or the electrical issues??
#5983 of 6629 Re: 2000 Jetta GLS 2.0 runs rough once it's warmed up... dies while driving... [paprikakitty]
Feb 19, 2009 (7:48 pm)
WOW... that is one long paragraph
I will try to touch on some of your questions
*) The waterpump MUST be changed when the TimingBelt is changed so it better have been changed at least once by now.
*) The temp guage on 2000 model year is KNOWN to be a problem. If your temp-sender is not GREEN... replace it with green one. Available here for $15 On the 2.0 engine, it is very easy to replace. I have done it in the dark in about 15 minutes with my daugher holding flashlight.
*)The rough running is either caused by
2)Fuel injection system
Since the ignition-system has been looked at, I would suggest having the fuel-pressure checked. Also consider that an injector is failing when it is hot.
As for the door lock / alarm system. There are some micro-switches in the door which may be malfinctioning. If the alarm-system does not "sense" that all the doors are closed/locked, then it will not arm.
#5984 of 6629 97 Jetta headlights and heater turn off
Feb 19, 2009 (11:44 pm)
So, I have a 97 Jetta GLS and for some strange reason the headlights and heater turn off at the same time. Sometimes they just flicker and other times the turn off all together. The lights don't dim and normaly. I think that it is a bad ground connection but I have no idea where the ground is. Also it shocks me some times and I think that is leading to a bad ground cable. Does anyone have any thoughts or have experienced a similar problem
#5985 of 6629 Re: 97 Jetta headlights and heater turn off [podot]
Feb 20, 2009 (10:00 am)
You most assuredly have an electrical short issue.
A power wire is shorting out somewhere.
It may be that a wire for the headlight under the dash is crossing over to the heater control or the heater control is shorted over to the headlight relay.
Does the heater control allow you to set low, medium, and high?
Take to an electrical expert.
The extra cost invovled in searching this down will pay for itself in time spent by the expert rather than by an unseasoned mechanic poking around.
Unless you can visually see the shorted wires under the dash with a powerful light source.
Just had a customer with brake lights always on. Turns out the wife kicked the brakelight switch with her pointed shoes and broke it in it's housing. Since it was not in the housing the plunger was always out sensing the pedal was being depressed.
Pray this helps.
#5986 of 6629 Re: 2001 2.8L Jetta [Mr_Shiftright]
Feb 23, 2009 (9:52 pm)
Thanks! I did purchase the Bentley manual... (now I just need to study it...). Do you by chance know if someone makes an aftermarket kit to upgrade the assy to a brighter bulb?
#5987 of 6629 2000 vw jetta 1.8t
Feb 24, 2009 (6:53 am)
hey have a qustion my thermostat will go to 190 but my heat comes out ice cold not sure where to start looking
#5988 of 6629 Re: 2000 vw jetta 1.8t [n1f2v3]
Feb 24, 2009 (8:02 am)
The possible fix is in the heater control valve.
Or the connections to activate the valve.
Or a blocked heater core.
Or blender door.
#5989 of 6629 Re: Problems, familiar and unfamiliar [shawnmalone]
Feb 24, 2009 (9:04 am)
I have had this same problem. I am hoping you know the answer because this post is a bit old. Please email me back at ragdollsdeathnycap.rr.com.
#5990 of 6629 Re: 2001 2.8L Jetta [allnfun]
by Mr_Shiftright HOST
Feb 24, 2009 (9:43 am)
I' ve swapped brighter bulbs into my '97 Subaru and was quite pleased, but I don't know what your VW has to start with. So what I mean is I was able to compare my bulbs to the new ones before I bought them.
If you mean some of these cheap kits on eBay to "upgrade" to Xenon, etc.---I'm pretty skeptical, as you can run into ECU problems.