Passat (B5) :: Coolant Boiling - Oil In Reservoir
Jul 13, 2007
Long story short, I got a 2001.5 1.8t M5 Passat with 63k miles 2 weeks ago.
This weekend I was driving around and pulled into the driveway and noticed the coolant was boiling in the coolant reservoir. It also looked like there was some oil in the reservoir. Take it to the shop, turns out that the plastic impeller on the water pump broke at 64k miles. This is wierd because the car never actually overheated. The mechanic doesn't think that the head gasket is blown or i have a cracked/warped head because the car still runs fine. He suggests I replace the water pump, timing belt, coolant reservoir, thermostat and obviously flush the coolant. I go ahead with the repair since its almost time for the TB anyway.
After bending over and taking it from the shop on a timing belt and water pump repair, I think I am all good. Today I open everything up after a few days of driving around just to check up on stuff. I open the coolant reservoir and there is telltale signs of oil in the coolant. Now i think this was an issue before the water pump went. Searching the archives I see that the oil cooler is a common failure. This could have also contributed to the failure of the water pump and maybe the thermostat, I don't know.
So instead of bending over for the mechanic for a second time in a week , I think I'm going to replace the oil cooler and flush the coolant system again and change the oil myself. Poked around looking at the oil cooler and it seems as if there is the slightest sign of an oil leak on the outside, which could mean there is a leak inside. I don't have compressed air so I'm not sure how I can test the oil cooler for leaks.
I am thinking i need:
-Oil cooler (some suggest S4, some suggest TDI one?)
-Oil cooler gasket
-Feed and return lines
-Hose clamps
-g12 coolant
-Oil filter
-Synthetic oil
Should I replace the upper and lower radiator hoses while I've got the coolant out? What else should I replace while the coolant is out. I see people suggest flushing the system several times. Should i use G12 everytime or can I just use water to flush until its clean and fill with G12?
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been working on my passat for the last year oil cooler went bad and also my CCM fried. Anyways got the car running good or so i thought drove the car up the road today and my coolant sounds like it's boiling inside the reservoir.
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I have a 1992 Toyota Celica I think I may have overheating problems every time i stop after driving a little while i can hear a boiling noise from where you put your coolant in and when i open it there is steam coming from the black hose that goes in it.
The funny thing is when i am driving the temperature gauge stays at 1/2 way and never passes it, also sometimes when i stop green and a bit clear liquid leaks on the ground on the side where the battery is.
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When the car has been running awhile the coolant reservior and radiator make a boiling sound. It really only does it when it's been at idle for a bit. Radiator is full. Fan doesn't seem to come on after it has been running awhile but does when you turn on air. At what temp should it come on? The temp gauge never goes above the middle point so it stays in normal range, even when the tank are radiator are gurgling.
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2000 Chrysler 300M with 142K miles. Was a very reliable car until recently.
Problem began with boiling coolant in the reservoir tank. Then began to lose coolant at a high rate. I tried stop leak products and replaced the coolant frequently for a couple months. Some of it kind of worked, but the problem always returned. The car drives fine for about 10 highway miles then begins to steam out from under the hood on the passenger side. It gets about half way up the temp gauge, but does not really overheat. I usually stop when it steams out, let it cool, replace the antifreeze, then do it all over again. I've also tried a bunch of other things too, e.g., radiator flush. None of it worked.
The mechanic wants to replace the radiator. Says the system does not have pressure so there's no real way to determine if there are leaks in the engine. But he does know that the radiator is no good. I'm okay to replace radiator, but don't want to do it just to find out ten minutes later that I have a blown head gasket, which I would opt not to fix. I have read the tell tale signs of a blown head gasket, such as coolant in the oil, but there is none. My exhaust is white, but it's 5 degrees outside and it doesn't look whiter. I have seen some coolant on the ground at times.
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Today on a little road trip about 250 miles everything was going well then towards the end i was about to arrive when the temp gauge rose about a quarter inch from where it normally runs and i stopped at a gas station and all my coolant started rushing and boiling out of the top of my reservoir, I let the truck cool down and removed the cap and i lost all the coolant in the reservoir i bought two jugs and filled it back up and fired her up and the temp is back to normal and was not leaking from anywhere.
Hit the road again for the rest of the roughly 35 miles of the trip to my camp no smoking or lack of power then through a little sand and mud and she stayed cool. I was towing a small single axle utility trailer with a atv and was going 65-70 whole way. Truck has never had a problem with anything in the year and a half i have had it. Just hit 250k. What could this have been? Its holding all the coolant its been in there for a couple hours now without leaking. Thermostat maybe stuck for a second? Or a air bubble?
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I have an 03 Passat Wagon, 2.8L V6. My wife is getting ready for a big drive tomorrow, about 13 hours. Right now after reaching the operating temperature and then shutting off the coolant is boiling. The temp gauge never goes beyond 190 so it is not overheating but it is getting really warm in the engine compartment.
History: I noticed a couple of days ago that the expansion tank was badly discolored and had some corrosion inside. I know it was because I inadvertently mixed the green stuff with it about 2 months ago. I know it was stupid, but that was before I realized how stupid. Yesterday I drained the coolant and flushed it about 4 times. I couldn't flush it completely because I couldn't get at the drain next to the transmission fluid pan. I just drained it from the front outlet.
I refilled the system by disconnecting the expansion tank and holding it up until fluid came out of the hole on the hose going into the firewall. Then I was going to bleed it from the bleeder screw in the rear coolant pipe (as listed in Haynes manual) but could not find it. I even have the photo in the book to guide me and it is not there. Since I couldn't find it I skipped to the bleeder valve by the serpentine belt. I bleed that and hooked it all back up.
Now my fluid boils. I know it isn't the expansion tank cap because I took the one from my Jetta and put it in and it does the same thing. I put the cap from the Passat in the Jetta and it doesn't cause that coolant to boil. After driving today for a half hour the engine compartment felt superheated. Even the fenders were hot to the touch. It is almost 90 outside but it still felt unusually hot in the engine compartment. I would like for my wife to drive this on her road trip instead of the Jetta, but I can't let her do that with this problem.
I think I must not have bleed the system very well. The heater works and the temp gauge never goes above 190.
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2.7 Power Steering Fluid boiling/foaming leaking out a reservoir cap!
1) Recently had Timing Belt/Water Pump and spark plugs/wires replaced.
2) Issue started immediately after.
3) Removed most of old PS fluid, cleaned out reservoir w/brake cleaner. NOTE: nothing appeared to be clogging reservoir. Refilled with new PS fluid. Repeated these steps a second time. This appeared to immediately resolve the issues for several weeks.
4) Now the power steering is getting rough and noisy again. Also, the PS reservoir is leaking out of the cap worse than before. It looks like the fluid may be "boiling", but it is definitely foaming up pretty badly.
What my issue(s) may be?
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I checked the oil it does not have coolant in it, so that eliminates the headgasket.
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My buddy has a 2000 1.8T Passat and he has oil in coolant reservoir. It does not blow out any smoke. It runs fine, and does NOT have coolant in the oil. We pulled off the oil/coolant heat exchanger on the oil filter and it appears to be good. We blocked off one end and filled it with coolant and put compressed air to the other end. Nothing came out. He took it to the shop and they said the turbo seals were good. I can't verify that though.
Head gasket? Worse yet cracked head or block? The car does have 170,000 miles.
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I own a Passat 2004 V6 Wagon ATQ and I noted that the coolant reservoir was low on coolant almost empty but i did not notice any overheating issue. I took the car to the shop and the Cooling system was pressure tested no leaks no problem then after a week I found that after a 20 minutes drive I pull into a parking lot and coolant was dripping from the reservoir my a/c fan works and the fan clutch spins slow and I'm able to stop it with my hand. I just replaced the clutch fan last but the problem still present.
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So I started the car today, proceeded to back out, and the STOP: check coolant light message comes on. I check the coolant reservoir, and its near empty. Then I notice a puddle. Filled it back up and let it run for a bit. No leak. Looked at the front of the engine and didn't see any leaks.
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I'm kind of worried about the coolant in my 03 2.8 passat. it is a pinkish/orangish color, but im worried they topped it off with dexcool at the dealer. is it okay to mix g12 and dexcool or am i looking at a gelled up mess?
With that note, can you run g12+? or do you recommend to stick with the oem g12?
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I have a 2000 passat tdi, over the past months ive noticed that I have been loosing coolant through my coolant reservoir overflow, my car has been running perfectly, my mechanic told me that its likely to be a head gasket problem and he put ceramic sealer in the coolant system, which was a disaster, the coolant pressure became much worse and told he me I needed a new radiator, which he fitted, but there was no improvement, whilst my mechanic was working on the car he noticed that when my car was running if he removed the oil filler cap the engine breathed heavily, my mechanic told me that the engine would need replacing,so I should sell the car as soon as possible.
I found it difficult to believe my trusty VW was in such a bad state, as it has only done 87000s mile and has full service history and starts and runs like a dream. Today I went for a second opinion, they told me that the coolant problem was because of a defected water pump, with most likely the plastic impellers failing, and the engine breathing problem could be down to a blocked breather at the top of the engine.
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I purchase an 03 passat v6 2.8l today. After it warms up it will push the coolant out of the reservoir. Note, it's not overheating. The guy I bought it from said the coolant reservoir exploded on thursday. He said his local mechanic said it needs head gasket. What's ur take on it? When I remove the over flow hose from the reservoir and increase the rpm, very little coolant comes out. After I let go of the pedal, the coolant gushes out on the over flow hose. Thermostat is opening. Guy said the water pump, thermostat and belts were replaced last year. The problem started Thursday when the old reservoir exploded. I was thing of replacing the belts , water pump and thermostat with oem.
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Today, I was greeted by a big red STOP! warning from my 2000 Passat 6 cylinder. The car drove fine last night. The coolant reservoir appears empty and has brown residue all over the inside. I notice for the first time that there is pink fluid on the floor -- I'm assuming this is the G12 coolant.
It's not a hot day, so I put in distilled water, turn up the heat and drive my Passat (trying to stay under 2k rpm) down to the dealer. They say that the coolant from the oil cooler leaked into the oil (and presumably, vice-versa).
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My son has a 94 Escort LX and this weekend he noticed that when he'd stop the car he could hear the coolant boiling. The car temp gauge never registered too hot, and it never lost coolant. We checked the oil and it is not milky.
About 2 years ago it got a new water pump. Last summer a new thermostat, and then earlier this year a new radiator.
Last weekend he was stuck in a huge traffic jam. (4.5 hours for a normally 45 min. drive). I'm wondering if that could have weakened the radiator cap. He's picking up a new one today, but wonder if there is something else we should check?
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VW Golf 2000 2.0 GLS engine auto. 158,000 km
Observation 1: The coolant flange broken 3 times, which appear to be caused by pressure inside.
Observation 2: I drove it today to see the problem. During normal driving upper hill, the temperature turned to be higher than normal. 1 or 2 minutes later after red light, I turned off the engine. And then driving for 2 minutes after the green light, the temperature read appeared to go back to normal (a tiny bit higher than normal). Further driving 5-7 minutes, the temperature reading went to the high end again. So I stopped, opened the engine cover and can hear water boiling sound inside the engine. The coolant in the expansion tank was much higher than normal (above the maximum). The coolant is Prestone (not G12).
I would guess that coolant is not flowing inside. But the problem appears to occur randomly. A water pump issue? (replaced at 90,000km) Or could be the thermostat? Why cannot the pressure be released automatically?
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I have a '99 E350 that sat for a winter. When I started it up, it appeared to be overheating and boiling over. I didn't have time to mess with it, and it sat for another year. Today I tried to figure out the issue and determined that I have trains fluid in the coolant. Pulling the trans dipstick revealed a white milkiness on the dipstick, so I'm guessing the trans cooler/radiator failed and the two fluids have mixed.
My question is, is the transmission salvageable? The van has not been driven in this condition, so I'm hoping there is hope. Obviously, flushing both systems (multiple times) is in order, along with a new radiator. But is there any hope for the transmission? I'd hate to spend the money flushing it all multiple times if it is a lost cause.
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I have coolant blowing out of my coolant reservoir when ever i hold it to the floor it does it with or without the banks programmer... 6.0L power stroke...
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Pulled up to a red light yesterday evening and saw some smoke near the right side of the hood. I immediately checked out the temperature gauge and it was fine. Car didn't appear to be overheating. I make it home--2 more blocks--pull into the garage, leave the engine running and pop open the hood.
THE COOLANT IN THE RESERVOIR TANK IS BUBBLING LIKE HOT SOUP AND A NICE PUDDLE HAS ACCUMULATED NEAR MY FRONT RIGHT TIRE--NOT TO MENTION THE TRAIL OF COOLANT LEFT DOWN THE STREET AND UP MY DRIVEWAY.
After some minor research it appears that it can be a few factors (ie, thermostat, fans????) I assumed it was a cracked reservoir (which would explain the leak) but the bubbling it the real issue.
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