Golf IV / Jetta IV :: Engine Light On When Weather Is Hot / Off In Cold And Humid
May 15, 2014
1999.5 Jetta 2.0 Lit, engine 186000 miles, bough it few months ago and this issue is driving me crazy.
Engine Light "ON" and "OFF" depending on weather conditions.
On my , No Engine Light in Cold and humid weather. When weather is hot the light goes ON.
I was thinking on changing the O2 sensor(the one after the catalytic) I do not know if this will solve my problem,
I will like to change the oil, it is using regular 10/30 SAE what grade and kind will be suggested?.
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My daughter bought BIL's jetta and loves it. Already had to replace the seal on the oil cooler which wasn't too bad to do. But now she's out of town with the car and it won't start. Said it did start and run for a bit, long enough to get half way down the driveway and then die. Won't start again for her. Called BIL and he said it had done that to his daughter also during high humidity times. Well we have been foggy all day, guess that counts for high humidity .Could this malady be from condensation under the cap or is it something more sinister?
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Just bought my 2004 Jetta GLS from a dealership last week. 2.0 Engine. Has 140K miles on it. 2 hour drive from the dealership to home was cold and foggy but it ran fine. In town stop and go traffic in foggy conditions since last Thursday and it has run fine. Got a downpour this morning and all of a sudden it is running choppy and the CEL is flashing at me.
I have a 96 MK3 as well that would run badly in the rain until I changed out the Electronic Coil. Got so I would carry spares with me.
Is it the same fix for the MK4 2.0? I've also read about using epoxy or JB Weld to coat the coils and keep the water out. Does that work for the MK4 Ignition coil?
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I've got a 1.8T 2004 automatic and the problem I'm having is the shifter is harder to move since the weather's been colder. It shifts very well and is responsive, it's just that I have to pull it harder to select P, R, N and D. D is especially hard (no pun intended you sick minds! ) to select, the shifter kind of stays in neutral but shifts after a bit. Is there anything I can do to fix this?
Side question: is the rear defrost supposed to turn off after a certain period of time? My 2002 golf does it but the jetta doesn't.
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So I have been trying to get all the issues fixed on this car, and I think I'm getting close. I just gave the car a tune up, minus a new coil pack. (2.0 engine) I've fixed the broken hose on the secondary air pump and all my error codes appear to be gone. However, when I start my car on humid mornings, the car struggles to stay running. Once the car is up to a certain temperature, the car has no problems. But while it is cool and struggling to run, the check engine light will come on and flash. I heard that it could be from a crack in the coil pack that allows moisture to come in. Does that sound right? I would hate to put a new coil pack if I don't need it yet.
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Went on a trip up to MI in cold and snow, and the engine light comes on. Great, I'm thinking, figuring me, the wife and our two babies stranded in another quality VW product. We pull over and call the closest dealer on the cell, and they say to just ignore it unless its flashing. When I got home, I vagged it and it says the cats were below their operational limit - I'm guessing too cold?
Whats the deal here? Can I look forward to engine lights everytime I go out in the cold? (this car is slowly driving me nuts. How can it be so bad and my Audi so good?)
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So my temp light comes on in my 2002 gti 1.8t. The light comes on with the engine cold and not running, just keys in. I replaced the temp sender and the fan switch. I already checked the fuses, still good. The only thing i can think of now is the relay. There is plenty of coolant in the system as well. And I am not getting any CEL.
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Looking for a solution to the windshield condensation problem found in humid states. I took my Touareg in for the TSB but it has not worked much.
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I have a 2000 Chevy S10 V6 with 176,500 miles that won't start when weather is cold and damp or hot and humid. I've checked distributer cap, spark plug wires, ignition module, and replaced crankshaft position sensor because of a high resistance reading on the sensor (14.17 Megaohms). I've never had any fault codes. What else can I check before I decide to junk the truck.
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My Chysler Town and Country started fine on a morning when it was 9 degrees. (no garage, so it was out in the weather.) I let it run for a couple of minutes so things would begin to thaw and then I drove to work. It ran really rough. I figured that once it warmed up, it would smooth out, but it did not. Even after the weather warmed up into the 50's 5 days later, it still runs rough. Now, I am also getting a check engine light. What could be wrong?
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I just got my wagon (2002 used) and noticed that the chrome detailing around the back windows of my wagon were getting really foggy in the super humid weather. What is the solution? Wait for winter? I assume the high humidity is just causing condensation in the plastic/chrome or whatever and when I press my fingers hard to it it goes away (consistent with moisture). Can this be fixed? She is so adorable without these clouds!
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My 120,000 mile 2003 VW Jetta will not start in cold weather. It starts fine when the temperatures are in the 30s, sporadically in the 20s and not at all in the teens and single digits. When I turn the key, the engine does nothing; it does not crank. Three mechanics have not been able to figure out the problem.
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My 2003 VW Jetta TDI has a major problem. The engine has likely been damaged by an oil leak that was not discovered until the oil ran out. I now have much reduced compression (340lbs or less) and the car doesn't like to start in cold weather and when it does it smokes much. I need to know if it is worth rebuilding and, if so, where I might have this work done.
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A/c is fully charged. Could be blowing cold one second, and blowing hot humid air the next.
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So my oil light was blinking on 03 jetta 1.8t for a week or so because of the cold temps where i am once my car reaches temp if you turn off the car and turn it back on my light stays off. i had a oil change recently hubby did that plus i had all my fluids checked and had to have my dipstick tube replaced because it broke.
I had a mechanic who lives in my complex take a look at the car and he said everything is running fine. So today I started my car then my oil light went on again it has been a lot colder than the past few days could that be the reason? My cars not overheating at all but once it gets to temp if you shut and turn the car back on the light goes away. My car only has 88 thousand miles on it and we used the proper oil for the oil change..
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Okay so my 2003 Jetta GLI normally starts without a problem. But it seems like whenever it gets cold (below about 40) it doesn't even try to start. I turn the key and nothing happens, the engine doesn't crank. All the lights turn on like normal and they're not dim so I don't think it's the battery. It'll still start if I roll-start it, but there isn't any sort of hill for a few miles. Normally once it warms up later in the day it'll start up.
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I have a 1.8t jetta that has a weird idle issue when starting and engine is cold it like to idle at 1200 rpm then will eventually work its way down to 800 rpm
I have no cel codes and have looked for vacuum leaks (but may have missed one) ,but if i start the car and it idles at 1200 rpm then i shut it down and start it right after it will idle at 800 rpm as normal.
Its a 1.8t unitronic stage 1 stock everything except e type coils with plugs at .032, Also does not have much pull after 4000 rpm, not to worried but just may be part of the issue....
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Both my radiator fans run all the time, even if the engine is cold. Soon as I fire it up, even if it's 0 degrees, they are running. To be clear, as expected, the fans do not run if the car is off.
Based on these symptoms, what components could be the culprit?
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My 99 2.0 jetta tends to flash the temperature light on cold starts and when the cars running for a while and im not moving (traffic) the light flashes and starts to overheat. Whats the problem? The previous owner had changed the radiator begire i bought it but can it. I need a new radiator fan or is it my thermostat?
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So my alternator went bad last week so I replaced it. Tested it yesterday and it was charging fine and drove it to work. I got the esp light on after driving 10 miles everytime I start it. So I go start it and it turns over slow but starts. Before I got to a friends house I was getting on it from a stop pretty hard and noticed the ac stopped blowing cold air. I go to leave a few hours later and it barely turns over and died shortly after moving. Took a while to jump it and the battery light blinked the whole way home. THEN, I go inside and hear something about 5 minutes later and my stereo is on! Also ABS light is on. Could a dead battery do all this?
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I was heading home last night from work and noticed something odd. It was the first pretty cold night that we have had around 20-25 deg. and I took off from the parking lot like normal.
When I got to the first stop light about a mile down the road I heard what sounded like the engine revving up right when I took my foot off the gas pedal. It did this as I coasted to the stop light. It also did it again at the next stop light just up the street. I thought maybe it was the heater blower, but It really sounded and felt like the engine revving. The car did not accelerate or anything, is this part of the warm up or normal? I also have the lower grill blocked but I don't see how that would make any difference.
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