Golf IV / Jetta IV :: Noticed A Gas Mileage Decrease
I have a 2004 volkswagen jetta wagon, 2.0l bev engine, 5 spd. I just recently replaced both oxygen sensors due to codes that popped up, but have noticed recently the gas mileage and performance have decreased. Now I get the code 16804 - Catalyst System; Bank 1: Efficiency Below Threshold P0420. The car passed smogged and all the readiness codes passed. One major noticeable different, is when I apply the gas, it is not accerlating like it should.
View 6 RepliesGolf IV / Jetta IV :: 2000 - Won't Start At Cold / Poor Fuel Mileage
I own a 2000 Jetta VR6 5 speed. Car has over 300,xxxkm on it, with documented maintenance including chains within the past 12k. Car has intake, 2.5" resonated exhaust, stock software.
I have recently noticed that the car has a cold start issue. Its winter here in Canada, so in the morning when i go to start the car and let it warm up for a couple minutes, the idle is choppy at first and then evens out at around 900-1k rpm. If i try to blip the throttle, or even hold it (half way or WOT) the car just wants to bog out, EXTREMELY rough idle. It will eventually, after about 2 mins of idling, go away and i can drive.
I have absolutely no issue with allowing the car to idle for a few mins to warm up, but i know for a fact that whether a car is cold or not, it should be able to rev freely.
I also have horrible fuel milage. I use 91 octane, and average about 250-300km per tank. 70% city 30% hwy driving.
The following parts have been replaced in the past 1200 to try and resolve the issue
OE Mass air flow sensor
OE spark plugs
BREMI wires
OE Bosch front O2 sensor
I have scanned the car several times, which led me to change the parts i did. Only had a CEL once and it was for the front O2 sensor which i just replaced. Any other codes were for random multiple and a cat efficiency fault. Again those were fault found off a GFF test done at VW, they were not enough to trigger a CEL, but i still changed the parts.
Golf IV / Jetta IV :: Prestone Smell From AC?
Jetta VR6 12V 149km
My dad, just took a drive, tells me the A/C Smells like Prestone. He never had a VW Car ever or German engineering. I never smelt prestone.
He says it may be because in the past the prestone leaked (well he had to replace a cable because it broke,would have to ask which one)
So, what should I do/check ?
Golf IV / Jetta IV :: 1.8t - Oil Smell Inside Car And From Exhaust
I've got an awd 1.8t and ever since I did my 3" downpipe and cat delete I've had an oil smell both inside my car and from my exhaust. I thought at first maybe it was the valve cover gasket which I did last summer, but it looks to be fine. Also it does smoke out of my exhaust sometimes, but a buddy told me if it was my turbo seals my oil level would reflect the seals being gone, which the oil level hasn't moved. What else could it be? Do I just need to put a cat backin?
View 5 RepliesGolf IV / Jetta IV :: Smell Of Oil And Fuel Burning
2000 Golf Gl AEG 2.0
My car smells of fuel in the exhaust and when checking the oil it is mixed. I have a cel and it says the o2 sensor is bad, not sure if a bad o2 would be causing all of this or not. The air filter is clean and I have done a few oil changes also. The oil is low also after so many miles but cannot seem to see any leaks.
Car also has over 200,000 miles. Is it necessary to change the gear oil in the vehicle?
Golf IV / Jetta IV :: Starting To Release Bad Smell?
Recently I noticed that my car (Golf IV TDI 90) starts to release a bad smell from air vents driver side, but it's not all the time knowing that the air conditioning and the ventilation are disabled. odor similar to the first odor released during the activation of the ventilation to disengage the first odor.
for your information, i have already changed the pollen filter withe a new one.
Golf IV / Jetta IV :: CEL On / Misfire And Smell Of Gasoline
I just recently picked up a 2000 Jetta VR6. its 173k miles on it and has few issues with it.
The Background. The car had a check engine light on and when i bought it I was told it was just an o2 sensor and i trusted him cuz i knew the guy (sorta). Bad move on my part, but not terrible. After I bought the car, i took it to autozone to just get the codes and be sure. It came up with a P1116 - o2 sensor heater circuit open on bank 1 (expected), and I also got a P0302 - misfire cylinder 2 (dafuq?). The misfire surprised me cuz it did not feel like it was misfiring whatsoever and it did not have flashing CEL.
After driving the car for a few days, I have noticed a few things that make me believe that it is either a faulty injector or seal.
1. The misfire, but not significant misfire. The only time I can tell any difference on how the car performs is when its at idle, it tends to not idle completely steady and vibrates a little more than what an engine should. Other than that, the car pulls great and not any issues.
2. The smell of gasoline is prevalent. It takes about 30 seconds before it just plain out reeks. And if you pop the hood and stick your nose right next to cylinder 2, you probably get high off the fumes (if that's possible). I am sure its coming from somewhere under the plenum because it was leaking some type of liquid that I had initially thought was just oil but I really think its gasoline.
Chevrolet - Express1500 :: Bad Mileage And Gas Smell
My van is using way too much gas. I can smell gas at tail pipe and can feel the express pressure when it explodes in exhaust pipe. I changed plugs, wires, distributor cap and rotor and still exactly the same thing. It also floods out easy if I don't keep my foot on gas pedal at a stop.I been told by people that it could be one or more sensor but is there a way to tell if one is bad or what. What sensor(s) I should look at where they are located.
View 15 RepliesGolf IV / Jetta IV :: 2004 - Strong Gas Smell When Idling
I have a 2004 Jetta w/ the 2.0 engine, auto transmission. Lately it has developed a very gassy smell when idling. Could be all the time I guess, but I only ever notice it when idling. It seems more noticeable on the passenger side of the car, or maybe my wife just has a better sense of smell than I do since she noticed it before I did.
The car seems to run fine, about the same as it always has. The idle is slightly rough, but it has been like that ever since I got the car. I got it with about 110,000 miles on it and had the timing belt and water pump replaced as soon as I got it. Mileage now is about 130,000. No info on the maintenance history of the car, but when I had the timing belt changed they said it looked like it was probably the original one.
The check engine light has never come on. I think I'm due for some new spark plugs so I was going to be replacing them soon anyways. Not sure what to check out here that might be causing this?
Golf IV / Jetta IV :: When Run Defrost With Heat On / Antifreeze Smell
I have a 1999.5 Jetta 2.0 question:
When I run my defrost with the heat on, I smell antifreeze pretty strongly. I am also having trouble keeping the windshield defogger/defrosted without the heat constantly blowing on it. Signs point to heater core, right? So I tried a bottle of Bars Leaks aluminum radiator stop leak with the metal flakes in it. When I run the heat on the feet or front/face/torso setting, it does not smell like antifreeze (unless it's when it very first starts and it's so slight that I don't notice). When I run the defrost with the heat on, it smells pretty strongly of antifreeze. I see no antifreeze on the passenger side carpet.
Golf IV / Jetta IV :: 1.8t Sounds Like A Diesel / Gas Smell In Engine Bay
My 2005 gti 1.8t started sounding weird a few days ago, it has a really deeper tone to it, sounds like a truck or a diesel. I can also smell gas in the engine bay, car seems like it runs fine just sounds really funky. Sound gets louder as I accelerate.
Here what it t sounds like right now. Sound is coming from top of the motor or behind it near downpipe, not beneath the car from exhaust.
[URL] ....
Golf IV / Jetta IV :: Cranking But Will Not Fire - Fuel Smell
2000 1.8t 5 speed Jetta ... The car has run fine up until recently when I started having some starting issues. It was intermittent, and got more frequent and longer. The car will crank but not fire. In the beginning, I could crank it for a few seconds, turn off and turn back on and then it would fire like nothing happen. This continued to happen and progressively get worse until I could not get it started, I could smell fuel which lead me to assume I had to spark.
Today I went out to swap crank sensors but only tried for a little while and cant really get my hand up there. So, I disconnected the battery for a while, went back and connected it, and it started. Up until this point I have had the same 2 codes, over/under boost, but the car has always ran with them present. I scanned today and got a p1545 Throttle position sensor code...But only got that one time. Ive been messing around with disconnecting and reconnecting the battery and among one of these times, the EPC light came on and would not rev passed 1k rpm. turned it off, turned it on, and it was fine after that.
Im sure I have a sensor about to let go Im just not too sure which one it is. I dont have vcds and am not getting a low signal code from the crank sensor with the scanner I have.
Golf IV / Jetta IV :: Won't Start - No Smell Of Gas If Pump The Throttle
I have a 2.0 IV 5sd
Today it won't start, and there is not any smell of gas if I pump the throttle. How long to fuel pumps last?
Should I just replace it? I have to admit, nothing has gone wrong with this car since it was new!!!!!
Golf IV / Jetta IV :: Burning Oil Smell From Engine Bay After Driving For A While
My engine bay smells of burning oil after driving for a while. I have cleaned up the engine in order to find the leak. There is some gunky residue on the belt side of the engine but that wouldn't cause the smell.
Crawling under the car I found that there appears to be a leak between the (what I think is) the aluminum intake side of the turbo and the cast iron center. You can see it in the videos below:
[URL] .....
This is the only leak near the exhaust that I can find. Does this mean that the seals inside my turbo are toast and I will need to either rebuild or replace it? What is the best course of action? Rebuild? New OEM Turbo?
Touareg :: Horrible Gas Mileage - No Oil Leaking / Smell
I'm having an issue that I think can be resolved. There are no leaks...no smells...I get roughly 12 MPG.. I drive like an old lady YET gas evaporates like boiling water in my car.
View 16 RepliesGolf IV / Jetta IV :: Coolant Burning Smell - Car Overheating While Driving
Last night while i was driving my car began to overheat. I could smell coolant burning. I pulled over and opened my hood. The coolant inside the coolant pod was boiling. Some coolant lines were steaming as well. I could also hear a gurgly like noise coming the engine. This is a 1.8t gti
View 3 RepliesGolf IV / Jetta IV :: 2005 GLI - Coolant Smell / Turbo Is Leaking
I am looking at a 05 GLI 5 speed with 133k miles. I drove it yesterday and it runs fine, but I smelled coolant after I turned it off. I was told by the dealer that the turbo is leaking some, it was spooling while driving and didn't seem to do anything funny. The check engine light came on and said coolant was low when we got back, when I cranked it back up the light was out. Just not sure about it.
View 4 RepliesGolf IV / Jetta IV :: Hot Rubber Smell When Under Periods Of Extended Boost
I have noticed that my car makes a hot rubber smell when under periods of extended boost. I live in CO and there are sections of road where, just to maintain highway speeds, my car will hit and hold 5psi as I motor up a mtn pass or very long/big hill...that could be a few miles with periods where it might just drop to 0 for a minute or two depending on traffic or a spot where things level out for a sec. (Downshifting doesn't really change this, only the rpm range...the hill/load stays constant)
Anyways, I don't notice this any other time. No visible oil leaks. The catch can is emptied. No smoke from engine or tailpipe. So I am fairly certain this is rubber I am smelling.
I am wondering if perhaps it's just the turbo getting hot enough to make the stock boost hose smell? It seems obvious to me that it is directly related to turbo heat. All searches I have done lead me to crayon smells or burnt oil...this is neither. Car runs fantastic otherwise, but this smell just sucks.
Golf IV / Jetta IV :: 2001 - Hot Plastic Or Wire Smell From Vents
I have an 01 GTI GLX with climatronic, and I've noticed this hot plastic or hot wire smell in the vents. Yes the fan wire gets hot when the car is hot and AC is on. But I don't think that's it. I've torn the passenger side apart, took the blower motor out, not it. The vent / recirculate motor is external to the vents, the only other place is behind the radio for the other one. What else is internal, if anything, that could be causing this smell? I'm concerned that something will melt or burn up.
I've been wondering if the ecm in the cowl would be getting hot but I can't smell anything with the plastics on. I would say it does seem to occur after driving for about ten minutes in town. But it also seems like it's there when I first start it up also.