Last post on Nov 10, 2013 at 1:53 PM
You are in the Volkswagen Jetta
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Volkswagen Jetta, Sedan
#4865 of 6655 Over Heating.
Oct 28, 2006 (7:13 pm)
2004 Jetta 1.8t 34,000miles.
On my way home tonight the the light blinked to say it was overheating. So i looked down and it was right...it was..I couldn't go above 50-55mph before it would touch the red again and blink..You could feel a lag in power, as if to say the turbo was shut off. When i got off my exit, doing anything below 40, it goes back to being normal, and the needle being straight up and down. I'm calling VW monday. Any ideas?
#4866 of 6655 Throttle problems? Engine reving on its own...
Oct 30, 2006 (9:03 am)
2001 Jetta 1.8T (135,000m)
1) Engine idles a bit high (8,000+rpm) and when the clutch is engaged stopping at a light or stopsign too much gas is fed to engine and car almost stalls out. The tachometer drops below 2,000rpm before "bouncing" back up to about 5,000-6,000rpm. Engine recovers when idling. Usually the Engine light accompanys this problem.
2) Engine does not idle at a steady rpm, but rather constantly "bounces" between 10,000-18,000rpm feeding gas to the engine. Engine light usually remains on, but sometimes disappears for awhile. EPC light now making an occasional appearance on the dash.
Need any assistance or ideas as to what the problem(s) may be. Mechanic often can't "duplicate problem" and does his best to diagnose dilemma. Bills starting to pill up replacing parts and eliminating possibilties. HELP!
#4867 of 6655 Re: Over Heating. [kylep86]
Oct 30, 2006 (1:35 pm)
Kylep86, this has happened to me before. It turned out to be a water pump problem. This was replaced under warranty. it could be the same for you. Keep us posted.
#4868 of 6655 Jetta overheating - coolant leak
Oct 30, 2006 (5:55 pm)
Here's the story. We just got a standard oil change on Saturday at a non-dealership garage. On Sunday the car began to overheat. We parked it at home, and checked the coolant. The coolant level seemed okay. We checked again maybe an hour later, and the coolant was definitely leaking. The level dropped substantially and we could see the coolant dripping down to the garage floor from the front bumper.
We have an appointment to bring the Jetta (a 2000 GLS with about 80k) back into the garage. However, to even drive it there, we need to refill the coolant.
The manual says: "Never use any coolant other than G 12 A8D additive... This coolant is available at your VW dealer... under no circumstance may G12 A8D be mixed with other coolant additives (for example G 11)."
My main question is: what the heck does "G 12 A8D" mean? We stopped by the auto shop to pick up some coolant. None of the coolant bottles had any markings even remotely resembling that code. We bought a bottle of Prestone DEX-COOL, which I think is orange-colored stuff. The coolant that had been leaking out of the car was orange too.
Can anyone offer any advice on whether or not the coolant we bought is fine for a jetta? Is it absolutely imperative to use "G12 A8D" or is this just VW trying to milk us for more cash?
Thanks a ton.
#4869 of 6655 Re: Jetta overheating - coolant leak [gambit293]
Oct 31, 2006 (7:42 am)
Don't know what G 12 A8D means, but I can tell you my mechanic told me NEVER combine another coolant with VW's or else the coolant will gel.
#4870 of 6655 Re: Jetta overheating - coolant leak [gambit293]
Oct 31, 2006 (8:09 am)
I just did a quick search on google searching G12 A8D and it came up with a bunch of forums with the same discussion. Try checking those out. One thing that I did notice is that it says NOT to mix with Dexcool... Hope that helps some. This doesn't seem to be a hoax.
#4871 of 6655 Re: Jetta overheating - coolant leak [gambit293]
Oct 31, 2006 (9:34 am)
Sorry to report, but you should NEVER use DEX-COOL in a VW. If I were you I would remove the incorrect coolant and replace with the correct VW specified coolant.
Since the manual says "Never use any coolant other than G 12 A8D additive"...why did you use DEX-COOL?
#4872 of 6655 Re: electrical problems [huchris]
Oct 31, 2006 (9:35 am)
Can you tell me how you resolved your trunk issues?
I have a 2000 Jetta. Whenever I open and close the driver's door the trunk unlatches. Repair shop has been unable to figure it out so far.
#4873 of 6655 Re: 2.5 New Jetta Trunk Problem [sp3]
Oct 31, 2006 (9:39 am)
Can you guys tell me how you resolved your trunk problem?
I have a 2000 Jetta. The trunk unlatches whenever I get in the car. Have looked at the sensors in the trunk and drivers door but have been unable to find the problem.