Golf IV / Jetta IV :: 2000 AWD 1.8t Overheating - One Side Of Coolant Line Hot
Jun 23, 2014
After finally getting some issues sorted this weekend (needed a transmission flush) I was driving around a bit to make sure everything was good. On the way back to my house, the car started overheating. I replaced the thermostat this winter (~4-5 months ago) because it was stuck open making things run a little cool.
I was thinking the water pump is probably shot but not 100% sure. the radiator fans both work and when I turn on the heater, it blows hot. Any good way to check if the water pump is dead? I have a little point and shoot infrared thermometer and one side of the coolant line was way hot and the other was fine (cold ~90 deg F).
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Mk4 Jetta Gli 1.8t , car was over heating only when sitting 5+ minutes at idle, mechanic said the big fan needed replaced so he replaced it. Car still over heated so i replaced the coolant with G13. It hasn't over heated yet but got in the car this morning and the coolant light started flashing and car was telling me to STOP the car. Checked out the coolant and it was on the low side. What it may be? Leak somewhere? Bad thermostat or water pump gone bad? Timing belt and water pump were done when i bought the car when it had less than 50k miles, car now has 99k miles on it.
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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?
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Last night while i was driving my car began to overheat. I could smell coolant burning. I pulled over and opened my hood. The coolant inside the coolant pod was boiling. Some coolant lines were steaming as well. I could also hear a gurgly like noise coming the engine. This is a 1.8t gti
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I am having a overheating issue with my 1.8t AWP gti, it goes as fallows, start the car, engine warms up go for a drive (short 5-8 mi), park the car and temp gauge starts to rise, (turns off car)... I began to check some things with the system, I checked both rad hoses bottom is hot top is a bit hotter and fans work when ac is on; here is where it gets interesting i took off the coolant return hose on the reservoir (cold start) and nothing was flowing ...water pump?... So i turned the heat on and air full blast and all of a sudden coolant starts to flow.
It also seems like air is being spat out as well. Soon after the flow beginning my coolant in the reservoir starts to fluctuate (rising and dropping) with air bubbles and beginnings to over flow so i shut the car off. Now I know what the possible issues are its either the water pump, air in the system or bad autozone thermostat. Here is some history of the car TB was replaced at 70,000 by Previous owner, i bought the car had the belt inspected and was told it was good, about 2 months ago i had a coolant leak and had it misdiagnosed as a thermostat housing leak; it turns out it was a coolant bypass hose that was leaking so i ended up fixing it. I lost a lot of coolant but topped it off with g12+. My mechanic doesn't think its the water pump and recommended changing the thermostat for an VW one another mechanic recommended to bleed air of the system.
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Ok so I have an 04 Jetta 2.0 and lately it's been overheating on me. The first time it started overheating was because my radiator was cracked and leaked out all my coolant, I swapped the radiator everything was fine for a while. The second time I started overheating, I saw my primary fan was bad it wasn't spinning at all, I swapped it everything was fine for another while. I also changed the coolant temp sensor, it wasn't bad it's just because the coolant flange was leaking coolant, so I changed it a long with the O-Rings and sensor. I also changed the thermostat just incase that was the problem but it wasn't.
I don't think the fans are turning on by them selves when they have too, but either way the car still overheats when I turn on the fans manually with the A/C. I'm not sure if the coolant is circulating, as the car only begins to overheat when I come to a stop and it idles. I have a feeling it's the water pump but I wanna be sure it is before I change it. What it could be? Things that I should check for that usually go out?
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Before I go buy a Bentley manual to dig around, when should my radiator fans kick on. I had the car idling for 10 minutes, no ac or heat on, and my coolant warning light came on, it overheated. It already has a new fan switch in the radiator, and the fuses are good.
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My temperature has been randomly dropping, them back to middle, and recently my engine was overheating because I'm guessing the fans didn't turn on, because I'm also guessing, the engine didn't know it was overheating?
Anywho, during my replacement, I made sure to get rid of the pressure, and the car was cold. I tightened the cap again, but when I took the sensor out, all the coolant spewed out.
Now if I understand this correctly, do I have a leak? I figured the leak I had was coming from the temp sensor as it is.
Here's some pictures for those who'd like to see ....
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I have a 2002 VW MK4 1.8t. It has 172,000 miles on it. Since i bought the car i have had to add coolant from time to time due to leaks from various plastic coolant parts so I replaced the crappy plastic connectors and flanges as they failed but it has never overheated till a couple days ago. It rose up to about 210'F but I didn't let it get to 260'F (aka the red zone).
While the temperature was up, the coolant was spraying everywhere causing white smoke under the hood. I stopped and looked under the hood and came up with the conclusion it was the coolant flange that holds the temp sensor since it was leaking coolant from the flange like a faucet hince the reason it caused it to overheat due to lost of pressure and no coolant in the system. So I replaced the part and gaskets then checked for other obvious leaks.
No leaks are shown nowhere else in the vehicle. So I added coolant to the car and let the cooling system do its magic as i left the heater on high. Let car idle with cap off and heater on for about 45 minutes. No signs of overheating. So I take the car for a spin and that's when the car starts heating up. I look under the hood and feel hoses and notice all are pressurized but top hose that leads to coolant flange is hot and the bottom hose connected to thermostat is cold.
I checked the return hose that leads up to the coolant reservoir to see if it's cycling and it appears it was. At low rpms the return hose had a steady flow and at high rpms it was flowing much rapidly. Which made me think it wasn't the water pump also this car with that many miles wouldn't have lasted with the plastic impellar this long if it wasn't already swapped out by previous owners. My question is what would cause it to still overheat? I forgot to note the fans did not turn on when the temperature was rising unless i turned the a/c on. But i still did a drive test with a/c on and it still overheated. I also did multiple burp cycles. I have invested alot of money in custom work and suck to leave it parked on the drive way.
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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.
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Question, I have a 2003 VW Golf GLS 2.0L AHV (5 speed). The brake vacuum line is cracked after the check valve on the intake side. I looked up the part number on the hose (at work and don't have it on me at the moment), did some research and noticed some revisions to that part number. Eventually settled on [URL] ..... (I ordered a new one since I needed to order a few things). Needless to say, I am beginning to think I ordered wrong.
I noticed that the check valve on the new hose has a 3rd piece that a smaller hose looks to clamp on? The check valve that is in my car doesn't have that. Did I order the wrong part? or did I need to be a cap?
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Alrighty. I have replaced everything dealing with my coolant. New water pump, mishi radiator, pusher fans, thermal switch, temp sensor, t stat, t stat housing coolant pipes, also new gasket and o rings. All new coolant pentofrost sf. Today I went to bleed the cooling system and waited til it did not suck any more coolant down, and we're no signs of air bubbles. Today when I drove it a to Walmart it began to over eat quickly. I pulled over and looked ubder the hood. Coolant was dripping out of my 19-21 pounds moroso cap. And my coolant hoses were rock hard.
Although my top radiator hose was very hot and my bottom was not, but closer to the motor it was. Like if there was a blockage but there isn't in the hose that goes to the block on the bottom of my radiator. Even with the air flow and my fans manually turned on when I first started the car it was steal overheating. On my vehicle there is not a reservoir it has been deleted. I have just my hoses and my radiator that's it. I don't know what can be causing this to happen. Also I ran an air pressure test and my head gasket is not leaking. Any clue what could be going on????
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When my 2000 GTI VR6 sits for a week or two the coolant will run low. There are no leaks that I can find. No coolant in the oil. The crack pipe looks dry. Nothing from the thermostat hosing that I can see. The carpet by the heater core is dry. Nothing that I can see. The thing that is funny is I can drive the car with it 100 degrees outside in Georgia and have no problems with the coolant getting low, or any signs of a leak, smoke or smell. The head gasket and every gasket except the oil cooler and oil stand gasket were replaced about two years ago. The heater core was also replaced at the time. I gave the front pulled loose so I can pressure test the system and look more today.
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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?
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So over the weekend my 2000 jetta VR6 started leaking coolant and getting way to hot. So i parked it at work and eventually got it towed to a friends shop. I haven't looked at the car since then so bear with me on the descriptions I'm giving as they are just what he told me over the phone. I'm going to try and get to the shop in the morning to check it out some more. He says I have a leak in 2 hoses that look like they are just rotted out.
First hose he says "Comes from the back of the head and is about a half inch wide. it goes into a Y and then the top half goes into a smaller hose." The 2nd hose he says "on the top of the coolant bottle there is a line that goes across the back of the firewall then comes into a rubber hose and from that hose their is a T going into other places."
Obviously that's not a lot to go on. and when I'm looking at replacement hoses at shops online I'm not seeing ones that match these descriptions really. I've been looking for a diagram or some kind of illustration of these hoses so that i can send it to him and he can figure out which ones they are but I have not been able to find one.
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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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This morning, I wanted to drive to work, but all of my coolant was gone. In the last couple of weeks, I had some errors with my speedometer and had it replaced a week ago, which did not fix my problem (the P0722 sometimes still came up).
Could it be that my coolant leaked over the last weeks and somehow messed with my speedometer, or are those most likely independent errors?
My car is a 2000 Jetta VR6 and at this point I don't want to put too much into it any more. If you need more input, let me know.
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My mate has bought a mk4 golf and it is loosing coolant. There is no obvious signs of a water leak the car starts fine, goes up to temperature fine, only time the temperature rises is when the car has to work harder. (going up hill) then returns to normal.
Left the car today for a couple of hours and went to check the coolant level and the system was still under pressure when opening the expansion bottle top. There is signs of rusty water around the cars panels where the expansion tank is located. Previous owner said that it used 4 litres of water on a 330 mile round trip. previous owner said it could be the head gasket but there is no cream on oil filler cap.
There is no sign of water leaking from the heater matrix inside the car.
"2000" y reg mk4 golf 115bhp 1.9 gt tdi all standard
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My MK4 Jetta started leaking coolant recently and I'm not sure where it would be coming from. I already checked the reservoir to see if it was leaking out of there but I could not find any leakage. I've found some coolant on the right side driveshaft near the differential, there is also some on the diff. I'm wondering if this could of happened because it has been sitting on a jack stand not being driven for about 2 months. Is it possible that within that time 1 or more of the coolant hoses could have cracked or anything. And while I'm on the subject of why it's on a jack stand, it also has gone through wheel bearings twice within the last 6 months to a year. Is this normal?
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I've got an '04 1.8t jetta with 158k on the clock. Recently noticed I have a coolant leak on the passenger side of the car. Started the car in my driveway and looked for drips and found coolant collecting in the front valence right underneath the intercooler. Took a look from the top and noticed the hose going into the bottom of the part shown in the picture is leaking like a sieve. It's the metal canister-type thing on the passenger side right next to the radiator. What part this is? And where I can get a new hose that connects to the bottom of it?
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So my coolant system woes have continued! I recently replaced my thermostat ,thermostat housing, thermostat cover and all of the rings and gaskets. I finally stopped the leak on the driver side which seem to be the thermostat now about seven days later I am experiencing leaking on the passenger side. I walked out from work today and noticed I pool of coolant under the car. I can't tell exactly where it's coming from but it's coming from one of the components that runs off of the large belt. I snapped a few pics from the bottom of the car I don't think this is the actual component that's leaking. I think the leak is just falling off of it . I was wondering where the water pump is located.
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