Last post on Oct 10, 2011 at 12:37 PM
You are in the Volkswagen Jetta
What is this discussion about?
Volkswagen Jetta, Sedan
#12384 of 12749 Re: Mystery Overheat??? [natewins11]
Apr 30, 2005 (9:58 am)
I just finished working on my 1994 jetta that had the same mystery overheating problem over a month ago.
Before you et into any big expenses here are a few thing to checkout first. Leaking head gasket.
1). test for Hydrocarbon in the antiffreeze (its a device that holds a liquid that changes color when hydrocarbons is detected in the antifreeze Napa Auto parts has the kit very inexpensive)
Here is how it works, you fill the device with the special indicator fluid place the rubber stopper in place of you expansion tank cap, start the engine and allow it to reach normal operating temp
coolant fumes will into the line in the rubber stop and bubble through the indicator liquid. if the color changes there is combustion fumes in your water jacket. (Conclusion leakyhead gasket)
2). check the thermostat in may not be opening fully restricting coolant flow through the engine.
3). Partially clogged radiator ( this could prevent hot coolant from reaching the tempreture switch on the far side of the radiator that operates the fans). Since you replace the radiator that can't be the problem but did you re attached the wires to the temp switch on the radiator
4). Second speed of the cooling fan may not be tripping in due to a blown fuse ( which is right before the expansion tank. Check fuse there)
5). The the little over flow hose from the expansion to the engine might be clogged causing excessive pressure to build up in the system when hot and revent the coolant from circulating
6). VW are known for how difficult it is to get trapped air out of the cooling system. Follow the proper proceedure to bleed air out of the system
#12385 of 12749 Re: Mystery Overheat??? [vdub]
Apr 30, 2005 (7:13 pm)
could it be the water pump at all????....whats the procedure to getting trapped air out of the system???
#12386 of 12749 Minor problems with Jettas?
May 01, 2005 (10:27 am)
I am interested in buying an used 2000 Jetta, but people kept on telling me that I should just stick to Japanese cars because Jettas always have little problems here and there and that it's very costly to fix. Is this true? I guess this is Jetta board so most people will be little biased, but any personal experience is helpful. Thanks!
#12387 of 12749 Re: Minor problems with Jettas? [hondao]
May 01, 2005 (1:07 pm)
To save your wallet (as well as your sanity) - DO NOT purchase a used VW prior to 2003. The 1998 through 2002 model years have had several issues, including coil packs, window regulators, oil consumption, etc.
This is coming from a person who has owned VWs for over 23 years - and currently owns three of them (1997 and two 2003s). This should tell you something....
#12388 of 12749 Re: Minor problems with Jettas? [hondao]
May 01, 2005 (2:24 pm)
Please take the 'naysayers" words with some relutcance.
If all they can tell you is "coil packs", "window regulator" and "oil consumption" then they are standing on weak ground.
The "coil pack" and "" Window regulator" issues were all supposed to be repaired by VW by now. A one time deal. (and only on specifc vehicles anyway)
The "oil consumption" is not a big deal either, It certainly does not harm the engine in any way. Any prudent driver will check their oil and top off when needed. So this is not really a problem either.
Personally, my own 2 daughters have purchased and LOVE their 2001 VWs. Sure- one of them consumes some oil -- SO WHAT??. There was no surprise to her when she discoverd that her beloved little Golf consumes some oil. My daughter is intelligent enough to check and top off the oil when needed.
Her last car (A Honda) consumed oil, brakes, shocks, radiator, power-steering components, several exhaust sytems and many other things.-- so adding a bit of oil occasionally to her "new" VW is actually a WELCOME improvement over that.
Make no mistake about it I am not saying that VWs are "more reliable" than Asian vehicles. Asian makes are designed to be practically ignored... and return boorring point-to-point transportation. VWs need to be maintained per the owners manual.... the reward is a FUN TO DRIVE car that is more like a close friend than a mundane machine.
You need to decide for yourself what you expect to get out of a vehicle. It is a very personal decision that only you can make (Given the proper expectations from the vehicle you decide is best for you.)
#12389 of 12749 Re: Minor problems with Jettas? [hondao]
May 01, 2005 (4:57 pm)
So why would you think folks on a Jetta board would be any more or less bias than folks on a Honda board?
More to the point, I own a 2003 VW Jetta TDI ( 53,000) miles and a 2004 Honda Civic( 9600 miles) side by side. Ask away.
#12390 of 12749 Re: Minor problems with Jettas? [bpeebles]
May 02, 2005 (7:55 am)
You want specifics, I'll give you specifics:
Oil consumption - 1999-2001 2.0 liter engine - due to a bad batch of piston rings from their supplier, these engines consumed oil at a higher rate than normal - a good friend of mine experienced this on his 1999 Jetta. I have a 1997 Jetta with the same engine and no oil consumption problems at 135K miles.
Coil packs - 1998 through early 2003 1.8T (Bosch J-series coilpacks and earlier) - Again,
due to a bad batch from their supplier, these coils experienced a higher than normal failure rate. If the car has been retrofitted with coil packs newer than the J-series, you should be fine.
Window regulators - 1999 through 2002 Golfs and Jettas - The owners of these cars experienced their windows falling inside the doors. This is due to the fact that some genious at VWdecided to replace the metal clips that secured the windows (which VW had used as far back to my 1975 VW Scirocco) with plastic ones. Only after VW decided to go back to the metal clips that the window regulator issue was resolved.
And one more thing: Coming from an engineering, automotive maintenance and aircraft maintenance background, not only have I owned VWs for over 23 years, I've also done everything from bodywork to full engine rebuilds on them. So I think I have a little idea of what I'm talking about.... (HINT: 600KGolfGT refers to my 1987 Golf GT which I put over 624,000 miles on in 16 years of ownership)
#12391 of 12749 Re: Minor problems with Jettas? [600kgolfgt]
May 02, 2005 (2:49 pm)
Thanks 600kgolfgt, that is an excellent synopsys of the possible "issues" that a buyer of 2000 VW may encounter. As you say, 2 of those issues are a one time deal and not a nagging problem
Let me also add one other lesser-known issue. The MAF sensor has been known to magically go bad.... most often can be traced to an owner installing one of those "oilable - highflow" air filters. The oil from the filter gets sucked into the intak system and destroys the sensitive microscopic surface of the MAF sensor.
#12392 of 12749 Re: Minor problems with Jettas? [bpeebles]
May 03, 2005 (4:50 am)
The MAF is problematic enough for VW to extend the warranty on them to 70k (along with window regulators) on Mark IV's.
#12393 of 12749 Re: Minor problems with Jettas? [bpeebles]
May 03, 2005 (6:25 am)
Gotta love those K&N filters...