Last post on May 15, 2013 at 9:50 AM
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Volkswagen Jetta, Audio, Electrical, Sedan
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#214 of 266 Re: 1999 jetta staling at start up and pulling when in 3rd geer [angelitojetta]
Dec 14, 2011 (11:32 am)
Your 1999.5 was KNOWN for having a faulty coolant-temperature-sensor (CTS). In fact VW changed the design of it to be more reliable.
The CTS on the 2.0L engine is VERY easy to change. First, you should open the hood and look at it. The new-improved one is GREEEN. If yours is not green, then replace it.
It is trivial to replace, I changed the CTS on my daughters 2001 2.0L in the dark while she held a flashlight. It took about 10 minutes.
The CTS is under $20 including O-ring and spare clip (incase you break the existing one)
Of course, troubleshooting a problem online has inherent inaccuracies. Your problem may be something else.
#215 of 266 2008 Wolfsburg Jetta, concerned about the hesitation when starting it....
Dec 21, 2011 (8:16 pm)
Hi all, I'm new to this site and new to owning a Jetta. I bought it a week ago and am very concerned (especially after reading some of the posts) about the hesitation when I'm trying to start the car. It usually happens in the morning when I am going to work and in the afternoon when I start it up to come home from work. Sometimes it gives out completely and I have to restart it. It's usually fine after the second start. It's a automatic with the DSG (Direct Shift Gearbox) although I don't have much trouble once it's started, I have noticed when I put it in reverse, and take my foot of the break, there is a couple second delay before it starts moving.
At this point, I'm wondering if I should just have the dealer buy the car back. I LOVE it otherwise and am so disappointed I'm having these issues but am worried about it leaving me sitting. Is this going to be one of those situations that I'm constantly having to get the car looked at, worked on, etc.? Suggestions, feedback, advice? Thanks so much!!!
#216 of 266 Re: 2002 jetta starting/ignition...oil issue [bpeebles]
Dec 21, 2011 (11:47 pm)
Ok I have decided to let you know what has happened. I chickened out with cleaning the mass air flow sensor.....got really worried that I may damage the piece. But what I did do that weekend was replace the engine air filter and added a bottle of fuel system cleaner. And the crazy thing is for almost a month I had no problems at all with starting up the car. But alas, it has started to act up again. Now it's not happening as much as it did before but I have a thought that it will start to become a daily occurrence again. After doing some more reading I'm thinking maybe the problem is something with the fuel intake or whatever it is that regulates the fuel upon startup of the car? Also that fuel system cleaner did improve my gas mileage noticably. Strange that after start up the car drives like a dream. If only I could figure out the starting problem.
#217 of 266 Re: 2002 jetta starting/ignition...oil issue [nap311]
Dec 22, 2011 (4:24 pm)
The fact that adding "fuel system cleaner" resulted in such a big difference in the way your 2002 2.0L runs indicates that your fuel-injectors may have been getting plugged up. (Just imagine how many gallons of gasoline have passed thru those tiny pinholes.)
It would not hurt to try another treatment to see if you get any more improvement.
Also, did you clean the snowscreen? (I clean mine annually and it is pretty plugged each time)
#218 of 266 Why does my 2002 VW Jetta's engine cut out when I slow down?
Jan 02, 2012 (8:36 am)
#219 of 266 Why does my 2002 VW Jetta's engine cut out when I slow down?
Jan 02, 2012 (8:36 am)
I have a 2002 VW Jetta. Whenever I slow down e.g. approach traffic lights, my engine just completely cuts out. It starts again with no problem. I’ve had the car for about 10 years. Lately, this used to happen about once a month but it now happens more often. The other day it cut out six times in the space of 10 minutes! Can any mechanics or people who know about cars out there give me some suggestions as to what the problem might be?
My uncle has driven the car on road trips from Connecticut to Boston without any problems and has never faced this issue, it only happens to me. Could I be slamming on the brakes too abruptly or confusing the car?
#220 of 266 Re: Why does my 2002 VW Jetta's engine cut out when I slow down? [faridamehreen]
Jan 02, 2012 (12:55 pm)
Without physically inspecting the car, diagnosis is difficult.
MAF or ECT may be suspect.
MAF = Mass AirFlow sensor
ECT = Engine Coolant Temperature sensor.
#221 of 266 96Jetta wont start after replacing water pump.
Jan 14, 2012 (12:31 pm)
Hi there, me and my hubby worked on our jetta for almost a week now trying to figure out why it was overheating.First we replaced some hoses/connectors, then the heater core, then the thermostat, and last but not least the water pump... which was a total b***h to get to! We did remove the timing belt and made sure not to move any pulleys out of place to knock the timing off and after successfully replacing the water pump, we put it all back together to only discover that now the car wont even turn over! What else could have possilby went wrong(was going throught our heads/thoughts of blowing it up!) Well needless to say we called our mechanic told him what we had repaired and he says we bent the valves because of the possibility the timing was knocked off and tryin to crank the car trashed the engine...but doesnt make sense because the pulleys and crankshaft arent even turning when we try to crank the car... can anyone give us some advice or possibly know any other reason the car isnt starting up? please we need your help!
#222 of 266 Re: 96Jetta wont start after replacing water pump. [96jetta3]
Jan 14, 2012 (5:37 pm)
Replacing waterpump should be INCLUDED when the TimingBelt (TB) is replaced. (I personally use waterpump with BRASS impeller...not the cheap plastic ones) Also replace ALL the idler-pullies and tensionor-pullies.
I agree with the mechanic... It is very likely that the TB is off by a tooth which can really mess up the engine. (bent valves...etc) You may get lucky and after re-timing the TB, your engine will be OK.
I am concerned that you suggest that the pullies and TB are not even moving when you crank the engine... this is IMPOSSIBLE!! (The crankshaft pulley *is* the engine)
As for the 'overheating' issue - did you perform a bleeddown test? This would tell you the condition of the head-gaskets. Leaking head-gasket can cause overheating.
#223 of 266 Reply: to bpeebles 1/17/12 @ 8:03pm
Jan 17, 2012 (6:08 pm)
Wow, you do have some good pointers there and me and my hubby did consider replacing some other parts but not until be figure out if the engine itself is worth saving. We did have a mobile machanic come look at it yesterday and he was stumped after adjusting the timing a little, checking the compression (which was good) and still couldnt get the car to start. We did have some fuel hoses that were worn but were able to salvage enought to try and see if that was the problem but still no luck.. Mechanic says the same thing we did, the car just isnt getting power like it should. Just dont know what the factor to this is! We've checked the spark wires/plugs, battery, alternator, starter,distributor cap, all fuses, relays, dont know what else to check.... were running out of ideas annd unfortunately taking it to a VW speacialist is just not in our budget right now. My husband messes with it everyday trying new things but nothing has happened yet..thanks for your help