Golf IV / Jetta IV :: Coolant Leak From Behind Thermostat Cover So Soon?
Oct 27, 2014
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
Advertisement
Finally got around to replacing my Thermostat because the DIY here made it look so much easier than removing the alternator and such. Did everything exactly as described and after assembling everything with the new t-stat and O-ring I am getting a constant leak from the housing. I tried removing everything and reassembling...all the bolts are tight. Plastic housing isn't cracked and seems to be in great shape. Everything lines up properly but coolant is just running out of the bottom of the housing. Am I missing some magical trick here?
View 15 Replies
I've got a coolant leak here (I wiped away some of it before taking the picture):
Close up
This is the only place I can find coolant leaking and it's running down all the way to the water pump:
When I wiped away from just below the valve cover gasket it flaked right off and it doesn't appear there is any oil mixed in. I changed the oil today and it didn't appear to have any coolant mixed in either.
The coolant doesn't appear to have any oil in it's nice and pink as it should be. I started the car from a cold start and sat and watched the area waiting for it to leak but nothing ever came out, of course.
I know there shouldn't be coolant leaking from this area anyways but I don't know how else to explain the trail pictured. I definitely have a small leak somewhere as I've found coolant on the floor of the garage before.
Do I just replace the valve cover gasket and move on or is there something else I should be concerned with here?
View 11 Replies
I drive a 2003 24V VR6 GLI
I recently did a valve cover repair to stop the dreaded misfire problem. Well, I'm still waiting on a few things but during the spark plug change obviously some of the oil from where the valve cover leaked previously fell into the pistons because I couldn't really clean it all out efficiently. This seems like it would cause a lot of problems? Do you think I should throw old spark plugs in there and let all the oil burn up before finally replacing them? I really don't want to foul up my brand new NGK's.
Also, I pulled p0300, p0305, p0306, so I am guessing oil in the spark plug/coil pack connection may cause some of the misfires, but do you think two of my coil packs are bad still? My plan was to move them around to see what happens after I get the new parts and am actually running again.
View 6 Replies
I have a coolant leak coming from I am assuming the thermostat housing or thermostat. My question is, is there a gasket behind this that I am assuming is bad or is the thermostat bad.
View 6 Replies
I have a 95 skylark 4 cylinder, i have what appears to be a coolant leak from the thermostat housing and i also have coolant mixing with my oil. Can the leak from the housing cause the coolant to mix with the oil? If not what else could be the issue?
View 3 Replies
If you have a coolant leak at the y hose for the intake manifold and the thermostat, make sure you replace the upper radiator hose as well as the y hose.
View 3 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'm trying to figure where the coolant leak is. Appears to originate on the driver's side front, right near the thermostat housing. Since the engine tilts back the entire drivers side is wet. The thermostat gasket appears to be OK, but it does have a lot of miles on it.
If it's not the thermostat then can coolant leak from the cross over tube. And is the cross over removable without taking off the intake. There appears to be a bolt coming up from underneath on the passenger side.
Also, does coolant flow through this plastic intake. If it does, then the leak could be some where else, if not, then it's probably the thermostat.
View 9 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
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
