Touareg :: Slow Coolant Leak After Engine Shut Off
Jan 24, 2015
My wife has a 2006 Touareg V6.
Noticed a coolant leak a week ago, refilled with coolant, and as of today the coolant warning has not come back, so whatever it is must be a very slow leak. Today I took the opportunity with the unseasonable warmth in Chicagoland to investigate.
Got the T-reg up on jacks and belly pan removed, ran the engine while inspecting the bay, didn't see anything.
After I shut the engine off, however, I noticed a small but somewhat steady dripping coming from roughly the middle of the front of the engine block.
Pulled the plastic cover off one of the pulleys, part # reads: 022 121 341. I couldn't find a match anywhere online, but I got tons of results for 022 121 011, which is the water pump.
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Van has 144k miles on it. It's been well maintained (see my other posts). I have had it since new (7 miles). The LIM was done preventively at about 75k miles (5 years ago).
Two to three years ago it started using/leaking etc coolant at a very slow rate. I would estimate somewhere in the 8-10 fl oz per 3-4 month range. As time has gone on it has been progressively using more. Now it is about 12-14 fl oz in about a month or 6 weeks. My "low coolant" indicator came on the other night. It had been a while since I added any coolant mix. 3-4 months anyway. It took about 1/2 gallon (US). There has been no "real" visible leak,up to now. I noticed yesterday when I was under it doing an oil change, that there was a "film" on the bottom of the trans pan. I followed the trail as best I could and it led me to the rear of the engine near the drivers front wheel. It was a small drop of coolant. (I tasted it). Don't try this at home... From the top of the engine looking in, I followed the upper radiator hose to the thermostat housing "pipe". It is very difficult to see in there. I took a few pix. [URL] ....
It looks like there is a little pool of coolant sitting near or under the thermostat housing that pools on top of where the transaxle bell housing meets the engine block. It's very hard to to see in the pix. Some of what looks to be damp, is actually shadow. This pool I believe runs down the back of the engine/trans, and then is blown on top the trans pan and undercarriage.
The van runs great, I want to keep it for the next 9 years. There is no coolant in the oil, or oil in the coolant. Unless the fix is fairly easy, the leak is still small enough that I am not going to bother with it until it becomes a large leak. The car runs cool even in the hot summer pulling a load. The only issue is the leak and that I have to add coolant every once in a while.
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My son has a 2007 sonata v6, daughter has one too. Both have about 130K miles, and both developed slow coolant drip leaks. I took off both hoses on both cars, cleaned the crud from the housings and replaced with new hoses and clamps. Problems solved in daughter's car, not so in sons car. I note that it looks like the area below the thermostat housing is wet - and thought that was from the crud/hose situation. But he is still losing coolant, even more now that its getting colder at night, and I's sure its not the hose connection anymore.
The car will generally NOT leak when hot, only as/when it cools off. I.e. puddle in the morning situation.
Looking at the diagrams, it looks like that "housing" is really a connection to the crossover pipe, heater hoses, other stuff (throttle body heat) and also contains what looks like a temp sensor.
I suppose any of these are possible, but my first thought was either a leaky temp sensor (or possibly loose) or something more serious like a cracked housing, leaking o-ring, gasket etc.
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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?
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I have a 2006 F-150 XL with the 4.2 V6, auto that has a slow coolant leak that I cannot find.
I bought the truck this spring, 190K, drives good, but it leaks coolant. I have added probably 3 gallons of water this summer, this does not bode well for winter.
I can't see any wet spots or steam, but do smell anti-freeze occasionally from outside the cab.
I don't really want to try easter-egging the repair (replacing things that might fix it).
How to find the leak? Or should I just use some form of stop leak.
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I have a small leak of greenish fluid (appears to be coolant) coming from a silver/aluminum tube that runs the length of my van, just above the left rear transaxle. The leak seems to be in the tube, near a support that keeps the tubing flush against the undercarriage. It is a slow leak, but it is dripping onto the transaxle/transfer case, and is beginning to leave a small puddle on my driveway -- gets a little worse each time I drive. I haven't noticed much loss of coolant in the reservoir, so not sure what this is and how to fix it. I have a photo. I am thinking the tubing might be part of the heating system.
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2008 Highlander - super slow coolant leak. Dealer can't find it via pressure test. Never trips sensor, but after 6 months or so, the heater doesn't work well unless turning to the left. Has happened since new, but now Just out of warranty. Dealer has recorded two pressure tests and leak, but I'm wondering what to do.
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My '02 F150 180k X-cab with the 5.4L is leaking coolant when it is shut off. Its just pouring right out.It looks like it's coming from top of the trans and around the firewall area. I had to replace a drain plug already.. the one behind starter ..its not leaking.
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On my 1.8t jetta she is leaking coolant slowly. Just started when it got cold out. It is dripping down the oil pan right down the center. It is falling off the oil drain plug. Was reading that it could be the water pump leaking but then it wouldn't be in the center of the pan. Got it jacked up now so here are some pics.
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New truck to me. Truck was advertised with a slow coolant leak. Figured I would trace the leak down and get it repaired no issues. Anyway, working on it this evening I take a close look around the oil filler area and notice the dreaded milkshake color.
I drained the oil out of the truck and the oil actually came out nice and black. Is the headgasket the only area that would cause the oil/coolant mixture? Supposedly the truck has never been overheated.
At any rate, on to find articles on how to pull apart a 4.6L Triton head. I'll see if I'm up to this challenge.
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One last issue with my 2000 B3000 3.0L. The leak seems to be on the left (passenger) side of the water pump very near where the bottom radiator hose connects to it. I can't find any loose bolts. It does not leak while driving the truck or soon after. It has to sit for several hours or overnight before it shows up. There are usually 3 or 4 wet spots where it drips from the water pump to the frame to the driveway. It is small enough that I only have to fill up my coolant tank every 1 or 2 months. Could this just be a small gasket leak? It's been happening for about a year or so I think. I replaced the radiator about 2 years ago. I've been expecting it to get worse or bust loose and have been checking it very often. I've never seen one not leak while running like this-has me puzzled.
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I noticed when I shut off the truck about 30-40 minutes later I'll open the degas bottle cap and notice there is no pressure.
I used a coolant pressure tester kit and pumped in 16PSI but couldn't hear or find the leak.
I'm going to buy a smoke machine in a month or two but until then, can I still drive the truck ?
I'm guessing it is a pin hole leak somewhere as once I shut the truck off... there is a lot of coolant pressure.
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Ave an 02 Camry 4 Cly
Noticed small puddle of coolant under the car - then noticed overflow empty and radiator a little low on fluid. Noted some coolant below the thermostat.
After filling back to proper levels, ran engine for a while with no apparent leaking. Took a couple of short trips and inspected after each trip and no leaking noticed.
Checked several hours later and noted coolant below thermostat housing and on ground. After a couple more trip noted coolant level dropping again.
What would cause fluid to leak after engine shut down? Could be coming from another location, but my attention is on the thermostat at present.
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I found oil leaking out of my audi (model above) this morning. it runs great, but is leaving a small puddle every time I park. I looked underneath and there is oil collected in many places. Its not pouring but slow drip when the engine is hot. More to the front of the car. Its not happening at the washer to the crank to drain oil.
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My 2015 Touareg 3.6 VR6 FSI makes a strange sound when shut off ever since new, it is a 3.6 VR6 FSI, just engine make the same sound when shut off?
Video link: [URL] ....
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We began to have an issue today with our 2010 Elantra. While driving, the Check Engine, Check Coolant and EPS lights all came on. The engine then would not speed up but run slow. The tachometer stopped working.
It was coming into our neighborhood, so we got it to our house. After checking around under the hood (fluid levels, etc.), all looked good. Then we noticed that the mats and carpet are wet up under the dashboard on both the driver and passenger sides. When I reached up into the dashboard over the wet areas, I feel water all along the wiring, etc.
I am guessing that water has leaked in somewhere, maybe after the rain storm last night. We have had the car two years and less than 15K miles. Why and where water would be coming in?
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Last night I drove to pick up my wife from work, well I got to the place and put the Touareg in park and shutdown the engine. The light switch was in Auto as it was getting dark and the lights had come on while I was enroute.
When I shut down the engine the interior lights stayed on, as well as the taillights I noticed. I sat in the car waiting for 10-15 minutes listening to the radio with the interior lights on. Was I draining my battery? Should I not do this in the future by switching the light switch to off from auto?
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Our 1997 Grand Caravan with 170K loses more air conditioning every year. So, I assume I have a slow leak. Is recharging something I can do myself with the new type cans offered by auto parts stores? Also, I think the radiator fan no longer comes on, I never hear it and the engine temp will go up when driving slowly around town.
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My car is a 2005 V6 Touareg. It has 60.000 kilometers on it and had no major issues to this date. It was well maintained. Recently, it developed a problem with starting. Before I go into more details, I have to tell this: my car has two batteries, and they are in perfect condition, verified by the dealer. The spark plugs were changed at 45.000 kilometers. It has no rough running characteristics under heavy acceleration or any hesitation - from what I read, symptoms for bad ignition coils-.
When I turn the key for ignition, the engine turns over but instead of immediately starting, keeps cranking for 2-3 seconds, and finally starts with a slow idle. Sometimes the charging light remains on for several seconds due to the difficult starting and the slow idle, but this does not last and the cars start idling normally, as if nothing happened. This happens when the car sits overnight and the engine is cold. Once it starts, I cannot get the car to do this without waiting overnight. Summertime weather seems to contribute to this but I still get it in the cold winter weather.
Strangely, if I do not use the car for, say, 3 days, the car starts like the day I bought it, without the hesitation.
I took it to a dealer and told them to check it but they said it start normally. They checked to see if the car registers any error but it does not. I am sure of the quality of the fuel I am using. In any case, I tried several different brands from different stations just in case, but this did not make any difference.
Bad ignition coil, idling sensors or mechanism, something wrong with the intake manifold? Carbon build-up (although I have to say this is not likely since the catalytic converter seems to be fine which leads me to believe there is no excessive carbon buildup).
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Well I noticed the fans are running at shutdown, then next day check engine light plus the jack light which I was able to turn off. I have had the same symptoms several months ago and they went away. Now its back.
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I have a 2006 Touareg with the V6 engine.
Recently, the oil light / shut engine off light came on, and during deceleration, an odd chirping noise was heard.
Oil level is fine. Previous owner claims to have had it changed every 6k with full synthetic. What the culprit might be?
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