Golf IV / Jetta IV :: After Installation Of Cold Air Intake Where To Put Breather Hose
After installing my cai, I couldn't find where to put this breather hose, I'm lost to if I need it and where to put it...
View 2 RepliesGolf IV / Jetta IV :: High Pitched Noise / Whoosh Sound From Intake At Low Rpm When Car Is Cold
I have a 2002 jetta 1.8t with unitronic stage 2 ECU and following mods:
ssqv BOV with recirc fitting (so acts like a DV)
3 inch open downpipe
Water/Meth injacetion (-35c washer fluid)
Short ram intake+heat sheild.
Spring loaded wastegate.
So for a while now I could hear a very quiet high pitched sound along with a whoosh sound from the intake at low rpm when the car is cold, after 5-10 minutes of driving the sound changes to where i just hear the wooosh from the intake, no high pitched.
I went out, let my car park for about an hour or 2 in 0c temp. went to drive it,everything is fine, the car just hit 90c. so i floored it, but traction control was on and i have winter tires, so it barley got to 4k rpm. CEL started flashing, no throttle control, really annoying high pitched sound from engine bay with lightest touch of throttle. the trubo was boosting to 22 psi and holding up to 16 PSI at redline before this happened.
The car would struggle to stay at idle, massive vibrations. but after reeving to 2k+ rpm no issue staying at that rpm, no blue/black smoke from exhaust. i scanned it and only got misfire codes and this strange code : "17925 - power supply relay for ecu (J271 or J363): electrical malfunction"
I had to clear the codes 3-4 times and restart the car 3 times for the power supply relay code to go away. but all the misfires, the high pitched sound stayed. it would misfire while driving, then stop, and then again.
I also logged with VCDS, and flooring it from 2k rpm to 2.6k rpm resulted in 0 extra boost over idle (idle boost was 980mbar).
Is my turbo blown 100% because of that sound, or could it be something else causing the "dentist drill" sound? And what about the power relay issue for ECU, could this cause any of the symptoms?
GTI 337/20th Anniversary :: How To Prevent Water From Getting Into Cold Air Intake In The Rain
So I dont have the money to but a new intake, I am having problems with water getting into my cold air intake under the car. What i could do or something cheap to buy to prevent this problem??
View 13 RepliesGolf IV / Jetta IV :: 2000 - Throttle Body Causing CEL?
So the other day I went to the mechanic for him to see what code(s) were causing my CEL. He simply told me that there was an issue with the throttle body and it didn't know what position to be in; he cleared the codes, clean the throttle body and said if the light came on again I needed a new tb. The CEL came back on, but his diagnosis doesn't make sense to me.
From what I've researched if the throttle body had this issue the car would run like crap; however, it runs fine. Smooth idle, good throttle response, accelerates smoothly through the rev range, and I'm still getting decent fuel economy. Given that, it doesn't seem like it's the TPS either, and the tb was just cleaned so I'm confused. Could it actually be the throttle body, or is there some sensor that has just gone bad? The car is a 2000 Golf with an AEG engine & 5-speed box.
And here are a couple pic for clicks of a stock-ish car.....
Golf IV / Jetta IV :: Error Code P0411 Causing The Car To No Start
I have a 2005 Jetta 1.8t and the thing will not start! The battery is fine, and has been recharged 100%. The fuel pump is pumping. It cranks all day, but just won't start. The only error code i'm getting is a P0411 which I understand is a leak in the vacuum system somewhere.
View 5 RepliesGolf IV / Jetta IV :: Engine Is Revving Causing Vehicle To Shudder
While braking, the car is revving up to about 1500 rpm and causing the vehicle to shudder and buck as if it wants to take off with no throttle input. The car is an automatic and this is the information relayed to me via my sister.
The car is a 2002 Jetta 2.0 automatic wagon.
Golf IV / Jetta IV :: Vacuum Pump Rivets Causing Noise At Startup
I have a raspy exhaust leak sounding noise when I start my 2003 GTi 1.8t that cuts off just a few minutes after I start the car and a fellow owner told me he thought it was a vacuum pump that has rivets that fail and allow the case to separate and cause this noise. Where this pump is located? This former coworker of mine said he replaced the rivets with long slender screws and nuts after removing the rivets but I lost contact with him and don't know where this pump is located.
View 2 RepliesGolf IV / Jetta IV :: Overheating - Coolant Spraying Everywhere Causing White Smoke Under The Hood
I have a 2002 VW MK4 1.8t. It has 172,000 miles on it. Since i bought the car i have had to add coolant from time to time due to leaks from various plastic coolant parts so I replaced the crappy plastic connectors and flanges as they failed but it has never overheated till a couple days ago. It rose up to about 210'F but I didn't let it get to 260'F (aka the red zone).
While the temperature was up, the coolant was spraying everywhere causing white smoke under the hood. I stopped and looked under the hood and came up with the conclusion it was the coolant flange that holds the temp sensor since it was leaking coolant from the flange like a faucet hince the reason it caused it to overheat due to lost of pressure and no coolant in the system. So I replaced the part and gaskets then checked for other obvious leaks.
No leaks are shown nowhere else in the vehicle. So I added coolant to the car and let the cooling system do its magic as i left the heater on high. Let car idle with cap off and heater on for about 45 minutes. No signs of overheating. So I take the car for a spin and that's when the car starts heating up. I look under the hood and feel hoses and notice all are pressurized but top hose that leads to coolant flange is hot and the bottom hose connected to thermostat is cold.
I checked the return hose that leads up to the coolant reservoir to see if it's cycling and it appears it was. At low rpms the return hose had a steady flow and at high rpms it was flowing much rapidly. Which made me think it wasn't the water pump also this car with that many miles wouldn't have lasted with the plastic impellar this long if it wasn't already swapped out by previous owners. My question is what would cause it to still overheat? I forgot to note the fans did not turn on when the temperature was rising unless i turned the a/c on. But i still did a drive test with a/c on and it still overheated. I also did multiple burp cycles. I have invested alot of money in custom work and suck to leave it parked on the drive way.
Golf IV / Jetta IV :: Overfilling Trans Causing Hard Shifts - Check Engine Light Came On
Will overfilling transmission fluid cause hard shifts? I used ~4.3 quarts to refill. How much should I drain out? My check engine light came on.
Basically, I am having hard shifts from 2-3 and 3-4 in tip mode and auto. more tip mode tho.
-I did a complete solenoid change b/c of cold start problem with n92 solenoid.
Fixed the cold start shifting out of first.
-Did a trans fluid change with Mercon V ATF Fluid works fine.
-Just changed oil on 4th of July last week.
Yesterday my check engine light came on. It's been about 500 miles since the solenoid change/trans fluid change, and 100 miles since the oil change.
Now my Mk4 is having this obnoxious shifting. I am thinking I possibly added too much trans fluid into my system as I do not have the VAGcom tool.
I drained out (bone dry drain till no more dripping from check/drain plug), roughly 4 quarts. I added 4.3 give or take 0.1 quarts back into the car.
Now I'm worried because everywhere I'm reading says anywhere from as little as 2.1 quarts to 3.5 quarts.
Should I drain out 0.5 quarts (because I know theres over 4 in there now) to make it 3.5 quarts?
Or should I just redrain the whole thing and start by measure one quart at a time?
Golf IV / Jetta IV :: 12v VR6 Intake Shifter Rod Noise Won't Go Away
I recently noticed a rattling coming from my intake manifold and with little research I discovered it was the intake shifter rod. I ordered the new updated bushings and installed them today and the rod continues to rattle just as bad. My car only has 90k and I am unsure what to do to fix the noise. I am hesitant to order a whole new shifter rod because it could be the manifold itself too worn. I am just curious if there is anything that I may have overlooked or if there is anything I can do.
View 4 RepliesGolf IV / Jetta IV :: Clogged Air Intake Before Air Filter
I only removed the standard air filter housing and fresh air intake yesterday to get access to the VSS and Speedo drive to change the differential fluid on my 01M transmission. I was surprised to find that there was a fine metal mesh screen installed at the entrance to this air intake tube. This would be located behind the battery and just behind the drivers side headlight is where this metal mesh screen is located. Anyways, this was easily disassembled to clean and reassemble. However, I did not find anything about this mesh screen in my Chilton's manual, but this is now on my annual maintenance list. I added some pic's to show the clogged air tube. There was also a spring loaded door on this air intake tube...
View 5 RepliesGolf IV / Jetta IV :: Air Intake Temperature Sensor Missing?
Looking at my circle track car when they told me my air intake temperature sensor was missing this is a picture online I found: [URL] ....
The hole is filled with a bolt and some epoxy. I don't see where the cable is for it. What will this do to my car? It is a track only car.
Golf IV / Jetta IV :: Rattle Coming From Back Of Engine Near Intake Manifold When Rev A Little
I have a 01 vr6 mk4 gti. When I bought the car I noticed a rattle but never paid mind to it. But now I just want it fixed. I hear the rattle come from the back of the engine near the intake manifold when I rev it a little. The most rpms the louder the rattle . I been doing some research and came to a conclusion that it could be the shift rod and bad intake bushing. But, I'll like a link on how to replace the shift rod.
View 5 RepliesGolf IV / Jetta IV :: Error Code P0113 - Intake Air Temp Sensor
My 2003 Mk 4 Golf have had a lot of error codes and I have cleared most (O2 sensors, thermostat, and Mass Air Sensor) I now have an error P0113 which is the Intake Air temp Sensor.
So I need to clean the sensor first then maybe replace it, but I can't find the sensor on the intake manifold.
I have looked all through the U-Tube info, but nothing matches my 2003 Golf 2.0L ...
Golf IV / Jetta IV :: Whistle Under Acceleration / Sensor Located On Intake Tube
I have a 02 2.0 Jetta with 179k
Have that pesky "whistle under acceleration" when past 1/4 throttle issue. I have been going over the entire engine, checking and cleaning.
-----On the intake tube where the 1 inch case vent and half inch tube meet there is a Flapper/Flow check with a electrical connector directly on top.
Question being, is this a flow sensor? The flapper is distorted and does not function properly.. is this an issue?
Golf IV / Jetta IV :: 2003 - Error Code P0113 / Intake Air Temp Sensor
My 2003 Mk 4 Golf have had a lot of error codes and I have cleared most (O2 sensors, thermostat, and Mass Air Sensor) I now have an error P0113 which is the Intake Air temp Sensor.
So I need to clean the sensor first then maybe replace it, but I can't find the sensor on the intake manifold.
I have looked all through the U-Tube info, but nothing matches my 2003 Golf 2.0L ....
Golf IV / Jetta IV :: Brake Vacuum Line Is Cracked After Check Valve On Intake Side
Question, I have a 2003 VW Golf GLS 2.0L AHV (5 speed). The brake vacuum line is cracked after the check valve on the intake side. I looked up the part number on the hose (at work and don't have it on me at the moment), did some research and noticed some revisions to that part number. Eventually settled on [URL] ..... (I ordered a new one since I needed to order a few things). Needless to say, I am beginning to think I ordered wrong.
I noticed that the check valve on the new hose has a 3rd piece that a smaller hose looks to clamp on? The check valve that is in my car doesn't have that. Did I order the wrong part? or did I need to be a cap?
Golf IV / Jetta IV :: 2003 - Air Shooting Type Noise Coming From Intake Manifold Valve?
It makes a weird 'fppp' air shooting noise before the exhaust note and my 2003 gti vr6 makes the exact same noise. It sounds like it's coming from the intake manifold valve and not really the filter, but I'm not sure and yes my filter is clean, the noise also sounds a little bit more obnoxious and problematic in real life. What it is, I thought it was a vacuum leak but I don't wanna bring it in till i know exactly what it is,
View 2 RepliesGolf IV / Jetta IV :: 2005 - Code P0011 Intake (A) Camshaft Position Timing / Over Advanced (Bank 1)
2005 GTI 1.8t Engine ... I changed my timing belt water pump and tensioner yesterday and today I am receiving an engine code: P0011 Intake (A) Camshaft Position Timing - Over Advanced (Bank 1) My friend timed the engine and knew that is was 1 tooth advanced. He told me that is was going to be OK because 1.8t's have a 1 tooth tolerance. I would have redone it but I did not know how. What to do in this situation? Do I need to re time the engine?
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