Ford - Escort :: Coolant Boiling But Not Overheating?

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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Passat (B5) :: Coolant Boiling - Oil In Reservoir

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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Passat (B5) :: Coolant Seems Boiling Inside The Reservoir

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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Celica :: Overheating - Boiling Noise From Coolant Reservoir

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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300m - Leaks - Radiators :: 2000 - Coolant Boiling In Reservoir Tank

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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Ford 7.3L Power Stroke (1999-2003) :: Coolant Started Rushing And Boiling Out Of Top Of Reservoir

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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Escort :: 94 Ford LX 1.9L - Coolant Loss / Radiator Half Empty

My 94 ford escort LX 1.9L is currently suffering from coolant loss. However I have not seen any drips anywhere from under the hood and the floor mats in car seem to be dry. The overflow tank is always full to fill line but after I drive it for a day after refilling the radiator back up cause its half empty for some strange reason and then come home for the day and the next morning its half empty again.

As a side note when I first start the car it runs fine but then I eventually notice a strange odor that smells like burning coolant and something else mixed to it thru the vents in the car even without heater on. The Radiator cap has replaced due to the original was leaking out coolant from under the seal and the heater works fine. I've have however been thinking lately that maybe there is leak some where in-between the firewall and heater core possibly but the floor carpet seems to be dry.

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Engines :: 1999 Honda Civic - Oil In Coolant Reservoir Not In Radiator

I have a 99 Honda civic LX 4 cyl. There is an oily residue in the coolant reservoir an on the fill tube but when the radiator is opened the coolant is clean. The car is using oil but not running rough or hot. There is no tailpipe smoke or evidence of leakage. I am planning to do a compression check and look at the plugs.

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Accent LC (2000-05) :: Radiator Is Dumping Coolant Into Reservoir But Not Overheating

My 2000 Accent with 164,000km is not overheating but is dumping coolant into the reservoir so that the radiator is about a quart low. I did have a few problems with it overheating in the past month, but that was solved by thermostat removal (always above 80F here). I stopped before the overheats reached the redline and allowed the engine to cool before continuing, no known adverse performance during the overheats. No water in oil.

Failed troubleshooting:

Drained and replaced coolant x3
New radiator cap
* No thermostat.

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Honda - Cr-v :: 1999 - Radiator Leak / Coolant Reservoir Empty

1999 Honda CRV. Just took a 3-hour highway trip. Before trip I topped up coolant reservoir which was a little low, but radiator was full. I did notice some dried white spots on the front of valve cover and spark wires. Wasn't sure what it was, but now realize it was coolant residue. Probably only 1-2 cups were missing from the reservoir, so the leak had just started.

After 3 hour trip, checked engine compartment again. This time the reservoir was totally empty (radiator still full) and the engine was well sprayed with greenish coolant residue. The radiator was cool by the time I checked it, so the leak source wasn't obvious, but it looks to be coming from the seam where the plastic top meets the aluminum.

I will replace the radiator when I get home, but first have to drive the 3-hour return trip. Will it be OK as long as I start full of coolant and keep an eye on the temp gauge?

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Prius (2004-09) :: Coolant Is Always Overflowing To Reservoir - Air Bubbles Coming Out Of Radiator

I have a 2007 Prius, my coolant is always overflowing to my reservoir. It doesn't have any overheating problem, if I will fill up the radiator I could see bubbles coming out, How can I resolve this problem?

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Elantra XD (2001-06) :: Coolant Level On Reservoir Low But Fluid Is Full Under Radiator Pressure Cap

I checked the coolant level on the reservoir and it was low.

I decided to add coolant by removing the radiator pressure cap, however, the coolant fluid is full under this cap.

So my question is where should I add coolant? through this cap or the reservoir?

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Lexus GS 2006-11 :: GS430 - Coolant From Radiator Blowing Back And Causing Reservoir To Be Overfilled

I have a 2006 Lexus GS430 w/ 100k miles. I've been trying to solve my coolant issue for the longest and I've been doing research like crazy!!! The issue that I'm having is that coolant from the radiator is blowing back into the reservoir causing the reservoir to be overfilled and splattering all over the engine bay. Also, when this happens the fluid in the radiator drops significantly ( I have to keep dumping the lost coolant from the reservoir back into the radiator). Under normal driving the fluid wont blow over to the reservoir that much (just a little) but, when I drive long distances or if I floor it that is when the coolant from the radiator really pushes over into the reservoir. When the car cools, I find out that the coolant from the reservoir does not draw back into the radiator. (I'm guessing due to the air in the cooling system?)

Checklist on what has been done to the car:
- NEW Water Pump (Installed by Lexus)
- NEW Timing Belt (Installed by Lexus)
- NEW Thermostat (Installed by Lexus) (I also tested the thermostat in boiling water and it opened and closed)
- NEW Radiator (Installed by Lexus also was pressure tested and passed)
- NEW Radiator Cap (Genuine Toyota 1.1 bar)
- Coolant Flush (flushed radiator and engine block with water hose)
-Bled System with my Lisle Spill Free Funnel and Heater on MAX HOT Full blast! Heater is working good!
(Did this 3 times for 30 min+ to get rid off all the air bubbles)
- Performed a Block Test to see if any combustion gasses were in the cooling system, to determine if it was a blown/failing head gasket (passed)

I dont know what else to do at this point other then do a compression test and a leak down test. There is no coolant in the oil and no coolant leaks. Car drives solid and strong! Is there a bleeder valve on the GS430 somewhere or does it have a bleeder valve? Is it something I'm doing wrong?

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Santa FE SM (2001-06) :: Power Steering Fluid Boiling / Foaming Leaking Out At Reservoir Cap

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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Ford 6.0L Power Stroke Diesel :: Losing Coolant / Radiator Making A Sloshing / Gurgling Noise

I have a 2003 6.0l... When I first bought truck, seemed to run fine. Since then truck has broke down on me once. I took it on a six hour drive, and couldn't turn vehicle off, because if so, truck wouldn't start back up until cool. After getting to my destination, fans seemed very loud every time I pressed pedal, and seemed very sluggish. Drove it a couple days and boost was low and fans continued to sound like they werre engaging even when I first started truck for the day. Had truck towed to shop, because it cut off on me when driving.

At shop : Truck had air filter, water in fuel sensor, o-ring for draining plug, new ICP sensor and harness, and HFCM cleaned up as it was filled with gunk.

After shop : Fans quit being so loud, but have not had near the boost I had before issues started. Truck struggles to go from stop, and around 15 psi boost gauge starts shaking erratically. Also, I have been losing coolant in a short period of time, and can't see any leak coming from anywhere, and also my radiator has been making a sloshing/gurgling noise and it will stop, then come back all within bout ten seconds. And I guess while I'm writing, I should mention the bucking after it downshifts in about third or fourth gear giving it gas makes the truck buck until the RPMs are above 2000 or it upshifts or downshifts, and at an idle seems to miss until warm.

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Celica :: 1991 Toyota - Water Boiling In Upper Radiator Hose

1991 Toyota Celica 2.2 liter standard water is boiling in upper radiator hose what could be the possible cause of this problem I have changed radiator and cap, water pump, radiator hoses and have flushed the system. could crossed hoses from engine to heater control valve and heater core cause this problem?The head has been checked and no exhaust gas was found in radiator fluid ...

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Plymouth - Breeze :: 1996 - Gurgling Sound Coming From Coolant Reservoir

I have a 1996 Plymouth Breeze and its been a pretty trustworthy car for the last few years. Lately however I have noticed a gurgling sound coming from the coolant reservoir whenever it the thermostat gauge hits about 50%. It cools right back down to a little over 25% and the sound goes away. I don't think its a leak in my head gasket as there is not any oil in my coolant or coolant in my oil, and its not over heating.

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Passat (B5) :: Boiling Coolant - Engine Compartment Getting Really Warm

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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Golf IV / Jetta IV :: 2000 - Coolant Boiling Inside The Engine?

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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