Golf IV / Jetta IV :: Coolant Leak At Outlet Flange / Yellow Color In Overflow Ball?
Sep 11, 2015
Bought a used 2000 Jetta, 2.0L AEG engine by the looks of it, 188k miles. Previous owner told me he did a bit of work on it, and acknowledged the coolant leak - have to fill the overflow ball about once a week. He said he recently replaced the timing belt, water pump, and tensioner pulley. Not sure if that has anything to do with it.
From what I can see it seems to be leaking at the outlet flange (see pics of rust).
Would any of this cause the water in the overflow ball to be rusty yellow (see pics)? Should I just go ahead and replace the ball and then the o-ring at the outlet flange?
I'm new to VWs, but am up for a bit of work to make sure it gets to 200k miles (bought the Bentley manual).
View 19 Replies
Advertisement
2005 jetta gli 1.8t automatic ( i know flanges are different from automatic to manuel) just recently found the leaking coolant flange. Can I change the flange without having to drain the coolant out of the system. my coolant is new because i recently had the timing belt/water pump etc done so its new coolant and i do not want to flush the system. also will i have to "bleed" the system if i just pull the flange of and replace it if that is possible.
View 2 Replies
I have a 99 vw jetta the coolant outlet flange nipple became brittle and broke...its the smaller 1/2 size hose not the two larger ones. Not sure how much coolant actually flows thru there and want to know if i can drive it a couple miles to a shop without it hurting the engine. I believe it's bone dry but don't know and i didnt want to add water since it's 32 degrees COLD. Don't want the water to freeze. The part comes in this weekend ...how far can i drive , with water no coolant....(vw coolant is expensive).
View 2 Replies
I think its a flange that connects to hoses, they want to charge me 140 to repair. would this be something i can do myself?
View 5 Replies
I have an 04 gti 1.8t and last night it started over heating. I pulled over and checked the coolant and the oil but everything looked good. I let it cool down and drove it home. When I popped the hood there was a little steam coming from the coolant overflow tank but I saw no leaking. I decided to vent the pressure off the system and then I got a little drip on the passenger side close to where the inter cooler is. I can't pinpoint the leak though.
View 4 Replies
The truck has been a dream for several months and I had a coolant leak at the thermostat outlet. Changed the fitting and thermostat and sealed with lots of blue monkey snot. It's been perfect for a couple months but a week ago it started leaking again. Exactly the same as last time. I cleaned the mating surface of the water pump with a plastic scraper to remove the old sealer and then finished it with fine scotch brite. I looked at several parts breakdowns and none of them showed a gasket.......
View 14 Replies
I have a problem with my 2005 gti 1.8t , I had a issue with my cooling flange leaking, I changed it yesterday refiled it with g12 and distilled water took the car for a test drive about 20 min in see the temperature go up, no steam or water leaking any where, turn on the heat notice no hot air from the vents,turn on the ac no cold air, and the fans are not turning on. Everything worked the day before I did the coolant flange, am thinking is this possible because the coolant temperature sensor broke? fans will not turn on at all even if it overheating. If I leave the radiator cap off the coolant is spiting out of the overflow expansion tank don't know where to start looking for some pointers. Would bad thermostat cause the fans not to turn on?I think is impossible that the fans and the thermostat broke at the same time with the fact that everything worked the day before..
View 9 Replies
02 Jetta 2.0L that I changed the thermostat. o-ring, and cover on when I first got the car about a year and a half ago.
I see dry g12 coming out from behind the cover and my coolant bulb had dipped quite a bit in recent weeks requiring a refill. What is most likely the problem here in such a short period of time? I've only put like 10k miles on the car in that period. O-ring couldn't have seated wrong because wouldn't the problem have been apparent immediately back when I did the job? Maybe I need to re-torque the cover? Cracked cover?
View 1 Replies
My car has been leaking coolant as soon as you put it in from it looks like the transmission area. Today I filled the car with water and drove it on the interstate to work. The car started getting jerky like it was losing power. So I pulled over and when I did the car shut off. There was excessive smoke under the hood and after removing the oil cap, smoke coming from there also. Tried restarting and it sounds like it just spins. No start. Looked at the timing belt, it's still intact. Put a wrench on the crank pulley and it's turning. What's wrong? Is it a goner?
View 10 Replies
I noticed today when I was in a drive thru that ,y Jetta was smoking a little.... Went home ate my food and came out and looked underneath the Jetta and found a substantial coolant leak..... My heater core is bad I know this already... Would this cause coolant to leak outside the car or the carpet only??? I jacked up the car and checked for leaks... There is coolant all over the rear engine mount... And the driver side corner of the engine is pretty soaked in coolant....I can't pin point the leak..... There is a connection coming out of the side of the head that's got a little pinky crusty stuff on it but I can't see anywhere around it...
View 5 Replies
Just purchased a 01 golf 1.8t 5spd and noticed it has a small coolant leak.. Left parking over 2 days in the same spot and it builds up a little puddle.. It's dripping down off of my oil pan and I haven't been able to trace it back to where the leak is coming from..
I've been told it could be my water pump? The car has 92k miles.
View 4 Replies
I have a 04" GLI and I was thinking about doing a coolant flush. Looks like I have a slow leak. I was wondering where should I look in order to stop the leak. Put some coolant in about a month ago and now the coolant light is back on. Every morning when I pull out of my driveway there is a small leak under the driver side of my car. Is this an easy fix? If I do decide to do the coolant flush myself what is the recommended coolant replacement?
View 4 Replies
2003 GLI 2.0 engine
We have a significant coolant leak. The attached pic is of a coolant pipe which runs down from the rear of the head at the firewall. This was taken from the underside looking up.
[URL] ....
View 3 Replies
My 2000 jetta glx is leaking coolant fast enough to empty the reservoir from full in about 10 minutes but only does it while running. Why this is or what I should look at fixing?
View 2 Replies
My 04' GTI, 24v VR6, all stock, @ 107,000. I had a coolant leak from the t-stat housing. I installed all new housing, seals, and C-Pipe from GruvenParts. Already had a green CT sensor installed and the kit I got didn't come with one, so I didn't change it. Found out the leak was from the t-stat housing o-ring didn't fit the old housing. The new one fits perfect. I put coolant on the seals and burped it. Doesn't leak a drop. But still overheating, all the hoses have pressure and are hot, so no blockage....I noticed the fans were not coming on at all. The fans used to engage every other minute and run for 15 secs on high ONLY. Longer times, if not constantly w/ A/C on. I was wondering how to test the fans, sender, and/or fan control module to see which one of them isn't working. And which pinouts are what?
View 2 Replies
My 2000 Jetta 2.0 has a coolant leak. I searched and found a lot of mentions of the flange on the driver's side, and I have coolant dripping from the bottom of the car in a location that seems consistent with that, but I felt all around the flange and the hoses that are connected to it and it feels dry.
Where else could it be coming from? (yeah, I could jack it up climb under and look, but I haven't had time yet). I also seem to have an oil leak around the same location, but the dipstick tube was cracked near where it went in to the engine so I'm hoping that was the source of the oil.
View 3 Replies
when I bought my 2003 gti 1.8t it had a small exhaust leak, I decided to investigate today and found that the downpipe flange and turbo flange was rattling around, there's almost 1/16" of play and it's making a rattling noise. I can't tighten the nuts on the studs any more but that might just be from them being seized in place. I'm getting a new gasket and studs and nuts and hopefully that will fix it?
View 3 Replies
Had a P2181 come up twice now... both on startup on a cool morning. Came on again this weekend. Monday morning I noticed a small coolant leak under the front of the car directly in line with the passenger headlight, but it only leaks if I park the car with the front down a slope. I parked uphill on Monday night and no leak in the morning, but I backed in facing downhill on Tuesday and had a small leak when I checked late last night.
So, last night I broke out the UV/black light -- G12 seems to fluoresce yellow'ish. I couldn't see much, so it is a small leak. There is some wetness on the bottom passenger side of the rad that's dripping over the back side of the front bumper/lip. No wetness around any other hoses, thermostat housing, temp sensor, turbo lines. But that's all from the top view. No time yet this week to get it up on stands to pull the bumper/splash shields for a closer look either.
I am little concerned tho as there's some wetness around the valve cover and when I pulled the oil cap my eyes suggested a bit of fluorescence under the cap and inside the valve cover. I'm a little worried oil and coolant may be meeting up somewhere... And to think... I was just in the process of getting geared up to do brakes and plugs before getting a modest tune (stage 1).
View 2 Replies
So the car broke down on my wife while on the way to work again. This time the coolant is completely drained from the system. It is all over inside the engine compartment so it's impossible to tell where the leak actually is. Within the last year we have replaced the pump and thermostat so I am going on the assumption that neither of those are an issue at this point.
Although I figure a stuck Tstat might cause too much pressure to build up and blow a line. Ill cross that bridge when the time comes. I also assume there should be nothing wrong with just putting water in there just to find the leak and then of course draining and putting the proper fluids in. Is this a wise course of action to take? You never know with these German things. I would of course use the same type of water that is used to mix with the coolant already.
My wife also stated that she did not see any smoke coming out of the tailpipe and only the engine. This means the engine itself should be safe and no gasket blew inside.
View 24 Replies
My car is a MK4 1.8t 2001 model.
Recently I've been losing a decent amount of coolant, and I noticed a puddle of water forming up right in front of my front right tire. I've inspected the engine bay, and the water seems to be coming from beneath the coolant reservoir itself, and forming a puddle under the windshield washer bottle. Which ends up dripping under the bumper in front of the right tire.
I didn't have any time to do more inspection, not even to take pics. The car is left at home as i don't want to drive it while it's leaking. Where to inspect or which parts to take off in order to spot the leak... No overheating has occurred, yet.
View 10 Replies
My son was driving his 2001 jetty vr6 2.8 he said he heard a pop and then coolant was pouring out underneath. Radiator and hoses look fine reservoir too.it pours out as fast as you put it in. When underneath it looks like it's coming from an area to the right of the oil filter towards the belt side but not ask the way over by the belts more like the middle of the engine. I can't see anything from above just dripping from below. I am hoping not a head. Oil look good no coolant in it and doesn't smoke.???
View 7 Replies
