Passat (B5) :: 2003 - Overheating / Fan Spinning / Check Coolant Warning
Dec 11, 2006
I was cleaning my passat the other day and I took my air filter out, however I didn't disconnect the wires and hoses on top of the box, I just raised the top cover up and pulled the filter out and cleaned it and checked it and put it back in, I also took out the cabin filter out and cleaned it and put it back in too, then I started the car and took it for a ride and the car started over heating, it keeps giving me STOP CHECK COOLANT warning and the temperature rises all the way to max RED.
I check the coolant level is at level and the radiator fans are spinning, however I noticed the lower hose that goes from reservoir to the radiator is cooler than the other hoses, what could be the problem? The water in the reservoir is hot too, could this be from a faulty thermostat? a sensor? or somewhere I read there is a fuse somewhere in the engine bay? I'm not too familiar with these 1.8t engines, the temp sensor was acting funny before too like sometimes it would go all the way to zero and stay there and go up and go down to zero and then raise, which I think there might be a bad connection or bad sensor.
I forgot to add the car is a 2003 1.8T.
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It's been pretty cold the last few days and tonight when I was coming home the car told me to stop and check the coolant.. and servicve manual....what does this mean...I have read to check the coolant level (pink G12 stuff)...the resevoir is full....could something be frozen??
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When I start up the car in the morning, the infamous "STOP!! CHECK COOLANT LEVEL" warning will come on, and then shortly thereafter it will go away. I topped off the coolant level (with the pink stuff of course) and yet this light will come on occasionally. It mostly comes on first thing in the morning when the car is started up and cold, and *sometimes* come on when the car is warm. Fluid level is all topped off. What gives?
I was reading that there is a fluid level sensor that sometimes goes bad? could this be it? I changed the coolant temp sensor back in the summer of this year. (not sure if that has anything to do with it?) Not sure if I have a leak, cause I look under the car in the morning and I have no spots of coolant anywhere.
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I own a 2003 Saturn Ion I.
Recently I noticed that the fan on the radiator does not function, resulting in overheating when using the AC. I have tested the electrical wire leading into the fan motor and found that it is putting out 14.4 volts, indicating that the wire is functioning properly and that all fuses are intact. I also hand spun the fan to see if it would turn without resistance, which it did, indicating that the motor is not jammed.
These tests lead me to believe that I may need to purchase a new fan unit and install it. Additionally I have found that there is a dual fan option for my vehicle, and I was wondering if I should purchase that instead of the standard one fan?
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On a few occasion, usually during cool weather, the engine temperature rises up to 130 C, the coolant overheating warning comes on for a few about a minute or two and then the temperature goes back to normal (90 C.)
The car has 106,000 km. I purchased it last summer from an independent use car dealer. I inquired about the car calling the previous owner. He did mentioned that the only problem he ever experience was that the car overheated on a few occasion during the winter months (cooler weather).
Could it be that the thermostat needs to be replaced?
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I have a V8 engine, and I have been getting the coolant overheating warning come on once in a while.
The engine fans go crazy, and the temperature needle on the small round gauge climbs all the way to red then the coolant overheating warning comes on in dash screen.
This can happen right after I turn the car on, or on occasion, it can happen as I am driving around the city.
I stop, switch the car off, and I turn it back on after a minute, and the car is just fine. So, basically, it doesn't seem like the engine coolant is actually overheating, but the fans and warning systems seem to think that they are. The fans are pretty loud, and its noticeable when they go on, and when this happens, I know that the needle will go all the way up and the warning will go off. I also know that if I turn the car off for a minute, and it will be just fine.
The conditions are random for when this happens. So its not when its particularly hot or cold or anything predictable. Could this just be a sticky thermostat? Is it a bad water pump? Bad battery?
The trouble is that now I am afraid I cant take a real drive. Around the city I can just pull over, but I am afraid to take the car two hours out or something.
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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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Experiencing cooling problems with a truck this new? My 2 month old supercrew 5.0 began over heating on a road trip last week. After about 400 miles of driving I see coolant temp start climbing until the overheating warning popped up. Pulled over, turned engine off, popped the hood and did not notice any obvious signs of overheating. Ended up waiting about 15 minutes, started truck up again, temp gauge reading 1/2.
Get back on the road, within 5 min temp starts climbing again, reaches ~ 3/4 then all of a sudden returns to 1/2. Continue on 10 min later temp gauge climbs from 1/2 to overheating quickly. I pulled over again same situation no obvious signs of overheating, but allow sometime to cool off. Started truck again temp gauge reads 1/2. Continue driving and temp gauge seems possessed, going from 1/2 to 3/4 back to 1/2 to almost overheating as I nursed it to the next dealer that I could find.
Dealer tech was able to mimic the problem and believes that coolant is not flowing properly. Thermostat replaced, water pump pulled and inspected, air bleed out of the system, all with no improvement. Now heads are being pulled/replaced to see if this solves the problem. Its depressing to have my new truck with 2,382 miles sitting under the knife at the dealer.
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On starting today I had an alarm to check coolant. Never had this before - and the expansion tank was dry. No visible signs of loss - Oil seems fine and free from contaminant.. so I guess not the head gasket!
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I have a 2002 passat. it is a v6 with a manual trans (i do not know about gls or anything like that) but the coolant stop light is coming on and if i drive, it runs hotter than normal. i assume it is a thermostat stuck closed but is there anything else i should look at before i make that assumption?
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This morning I went to my car started it for 10 seconds the light on my dash said stop and to check coolant, I got a ride to get some coolant filled it up, drove to work than drove home after work and the coolant level is at the same place I filled it up as this morning. What happend that it was gone last night than fine today? 03 vw gti vr6 24v ....
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I have a 2003 F150 4.6l triton v8.... I started over heating yesterday. Got home, let it cool down and found Oil in Coolant. No coolant in oil or transmission fluid. What could be wrong?
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I have a 2003 F150 4.6 Triton V8.... My truck started over heating again after replacing the Thermostat and Water Pump later this summer.... Well I checked Coolant and I have Oil in the Coolant. I see Nothing wrong with the Tranny Fluid and see nothing wrong with the Oil.... What could be the problem??????
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My 2015 F350 6.7 has 13,400 miles and displayed the check coolant additive warning as I pulled into town from an 850-mile round trip this weekend. If the radiator in 2015 is still the same as the one used in 2012 etc discussed in another thread?
I will call my local dealer tomorrow. I do not see any obvious leak at this point. I had the oil changed before taking the trip and assume all fluid levels were checked.
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I have a 2003 dodge neon, a couple days ago i hit a bump and bottomed out on the front bumper and pulled a transmission hoes. after repairing that my car is now over heating, i have replaces the thermostat and the upper radiator hose. i am not leaking coolant, i have talked to several people on this and they say that it is either my water pump or i have a vapor/air lock inside the block, when i was replacing the thermostat i noticed that my coolant was a milky tannish color and was "chunky" and that is what is making people say that it is an air lock. but my hear is not blowing hot air, that makes me believe that it is the water pump.. when i start the car it take the usual 10 or so minutes to reach normal temperature just like it did before all this, but then it shoots up to almost over heating in less than 5 or so minutes.. I am really stumped by this and i am a college student so i rally cannot afforded a mechanic unless absolutely necessary....
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I have an 1997 F150/4.2 V6/220,000 miles/4x2. During hot weather (over 90F) the engine slowly overheats. While driving on the interstate (from Indy to Fort Wayne), the coolant temperature shows normal on the gauge. Slowly the temperature gage creeps up to close to the red area. I am running the A/C.
When I switch the heater on and the heater fan at max, the temperature gauge drops pretty quickly to a normal range. I switch off the heater and the A/C back on, then it takes 30 minutes for the temperature gauge to start rising again.
When I open the hood when the gage shows close to the red area, the upper coolant hose has a lot of pressure (cannot squeeze it), which would mean that the thermostat is open and the waterpump is working. Also the fan is running fast. The coolant was changed out a few weeks ago and the coolant level is at normal level when the engine is cold. At lower ambient temperatures, there is no overheating. I am puzzled what the problem can be. I am thinking of a restricted coolant flow. Looking for solutions to my problem.
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I have a annoying check coolant additive warning light that wont go away, is their another way to turn off the light other than the button on the steering wheel? I have searched the forum but have had no luck, my coolant level is at it's proper level.
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I have a 1999 4x2 F150 XL, 4.2L engine, 5-speed trans., about 197,600 miles and have been getting P0306 and P0174 codes. The check engine light came on and stayed on. Also, pretty much randomly, my engine over-heats and the engine compartment coolant reservoir is suddenly dry as a bone. I bought the truck new and this has only happened twice, during normal driving.
Clearing the 0306 and 0174 codes. Not sure what to do about the over-heating thing.. What I've done so far to try to clear the codes is the least expensive stuff:
=> Replaced both forward O2 sensors, have read where the two rear O2 sensors don't necessarily need to be replaced so I haven't replaced them yet. The sensors that came off are Bosch, as are the ones that I bought from Autozone and installed.
=> Replaced old spark plugs with Motorcraft brand, gapped to 0.054 in.
=> Replaced old spark plug wires with Motorcraft spark plug wires.
=> Cleaned the MAF sensor
=> Replaced PCV valve and replaced an section of elbow hose near it. The original elbow had a big hole right at the 90-degree bend, on the inside.
=> Replaced a cracked, dried-out, vacuum hose coming from the evap cannister purge valve and going to the front underside of the upper intake manifold.
=> replaced fuel filter.
After doing all this, I took it out on the road long enough for the computer to wake up and relearn and got the check-engine light again. Only this time it was flashing. I gather from reading in this forum that a flashing CEL is worse than a constant-on CEL so I drove back home and have yet to take it back out.
After reading about problematic ignition coils, I followed a procedure in my Haynes manual to check mine out:
=> Verified the correct resistance values at the electrical connector (0.7 ohms),
=> Verified battery voltage is present at the harness side of the electrical connector (about 12.6 volts),
=> checked the resistance values between the three sets of 'towers'. Starting from front to back, the resistance readings were 13.06 kOhms, 13.12 kOhms, and 12.98 kOhms. The correct range in the Haynes book is 6.5 to 11.5 kOhms so I thought maybe my ignition coil was bad.
I located a Motorcraft ignition coil at a local O'Reilly Auto Parts store, went there, and was able to check the resistance values on that new one. Turns out the resistance on the new one at the parts store is pretty much the same as that on the one on my truck (all three coils were 13.something kOhms), so I haven't replaced the ignition coil. I guess either my Haynes book is probably incorrect or the ignition coil on my particular F150 has different resistance values than the rest of the vehicles covered by that manual.
Next things I'm looking at replacing:
=> egr valve and the associated line to the DPFE sensor. (DPFE replaced a few years back, as a result of a P0401 code)
=> iac valve
=> upper intake plenum gaskets
I'm kind of at a loss at this point. I hate to just continue replacing things without knowing that I'm replacing the right things.
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At the end of last winter, I got the warning flash that my coolant level was low. So I topped up (about a pint or more)About 3 weeks later I had to go through the same scenario !! but then it started to get hot outside and my air conditioner mode took over and lo and behold - no more coolant loss.!!?? Now that winter and cold weather is back - so is my leak!!
So I run off to the local dealer and they get the car up. And drop the belly pan with the engine running and the heat cranked up. the mechanic said he found a dripping hose coming from UNDER the intake manifold.
The engine is a 2002 2.8 v6....
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While coming home tonight in a snow/ice storm I got stuck in a drift at the end of our driveway. After some shoveling we got out, but there was some spinning tires before we got enough traction to go. A short time later when we opened the car door there was a warning sound and, after starting the car, the brake/abs warning lights came on.
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I have a 2004 W8 Passat wagon. I just went over 60,000 miles and was wondering how to reset the service warning for coolant servicing.
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