21 votes

Cascading Repair Costs following Blown Head Gasket on a 2004 Subaru Outback

Sorry for your situation, but this is one of those times when it's best to put the car out to grass. The car is 15 years old. I kept a Subaru running until 300,000, but there was always 'just one more ...
PeteCon's user avatar
  • 8,702
14 votes
Accepted

Strange overheating behaviour

While the other two answers were ones that were going through my head while I was waiting for the service truck to arrive, the actual problem was much simpler (although much more expensive to fix) ...
Rory Alsop's user avatar
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11 votes

Car overheats idling in traffic

My top suspect would be a radiator fan that isn't running when it should. The fans assist in transferring heat from the radiator to the surrounding air, and are most needed when the car is stationary....
Zaid's user avatar
  • 39.1k
10 votes

2006 wrx overheats going slow but not at speed

I don't think there's any reason to suspect a head gasket right off the bat like that. The first thing that comes to mind is the electric cooling fans. They are on the car specifically to keep it ...
JPhi1618's user avatar
  • 13.2k
9 votes
Accepted

Why does my overheating car cool off on declines?

You may have developed an air bubble in the system, probably from the reservoir falling off, or from the mechanics not bleeding the cooling system after emptying it. There'll be a pocket of air in the ...
Aaron Lavers's user avatar
  • 1,586
8 votes

Cascading Repair Costs following Blown Head Gasket on a 2004 Subaru Outback

I concur with user9181; I would add a suggestion of having a non-dealership mechanic render a second opinion. As noted, redecking the heads requires removal of the timing belt, and on reassembly it is ...
John Meyers's user avatar
7 votes

Strange overheating behaviour

I am leaning toward the water pump. The cool radiator and heater core are a sign that the hot coolant is not being moved around. Coolant should always flow through the heater core while the ...
rpmerf's user avatar
  • 8,403
7 votes

1995 Honda Civic lx overheating

At a guess? From your description I'd bet it has a blown head gasket. The only way to tell if this is so is to do a sniffer test (search for "block tester") at the radiator. There are testers which, ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
7 votes
Accepted

When idling, AC does not work and engine overheats. What's the cause?

A few things spring to mind: confirm radiator fan operation (per user3188168's suggestion) The fans are vital in ensuring air flow across the both radiator and A/C condenser when the car is ...
Zaid's user avatar
  • 39.1k
7 votes

Engine overheating - mayo in oil sump mystery

Some thoughts: think about interfaces where could coolant and oil mix. The head gasket is one place but there may be another place like an oil-water heat exchanger. Under normal circumstances I ...
Zaid's user avatar
  • 39.1k
7 votes
Accepted

Overheating at idle - mechanic says head gasket

It would be good to ask the mechanic to explain to you how they are sure that it is the head gasket – head gasket problems often share symptoms with other problems. One way that a head gasket failure ...
dlu's user avatar
  • 14.5k
7 votes

Overheats only when running at low RPM

This sounds like a problem with the radiator fan control system to me, the radiator fan should turn on automatically when the temperature reaches a certain temperature, and switch off when below. We ...
GdD's user avatar
  • 16.9k
7 votes

Idling motor and running AC for 4-8 hours in 100 degree heat?

It shouldn't cause the vehicle any issues. Realistically, all you'll be doing is burning fuel. The wear will absolutely be minimal, mainly because at an idle, there is very little stress put onto the ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
6 votes

Coolant boiling and smoke coming out of engine bay

On Symptoms... The boiling and smoke are a result of the high temperature due to a cooling system malfunction. The fact that your temperature dropped again is indicative that the system works ...
Lynn Crumbling's user avatar
6 votes
Accepted

Can engine oil type cause a car to overheat?

I don't think so I've had many experiences with strictly oil cooled engines. In particular the 1986 Suzuki GSXR 750/1100 platform. They went strictly oil cooled with a giant oil cooler and 8 quarts ...
DucatiKiller's user avatar
  • 32.9k
6 votes
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Overheat, coolant loss, P0170/P0117, hard start, smoke, delayed throttle, no vtec

I finally got a chance to investigate more and figured it out. After letting it cool during the initial trip, I was able to check the coolant, and it was bone dry. I added about 3.2 liters to the 3.3 ...
Jason C's user avatar
  • 4,890
6 votes

What effect will replacing manifolds with headers have on oil temperature?

I would seriously look at improving your oil cooler. I doubt going "larger" is the immediate solution, I'm betting it's the airflow across the heat exchanger. Relocate the cooler, modify/improve the ...
SteveRacer's user avatar
  • 12.4k
6 votes

Overheating at idle - mechanic says head gasket

There are so many things that could explain slow overheating A compromised head gasket is just one of them. Other (less involved) reasons include: a radiator fan that doesn't turn on when it should ...
Zaid's user avatar
  • 39.1k
5 votes

Strange overheating behaviour

To me it sounds like your thermostat may be stuck in closed position. Hints that point to this are no heating in the car top of the radiator was cool radiator cap, no steam came out , A ...
EChan42's user avatar
  • 1,005
5 votes

2003 honda civic overheats only after freeway speeds

IMO this classic low coolant level Even if your coolant looks fine in your overflow tank it doesn't mean your cooling system is at appropriate levels or that there is not air in your cooling system. ...
DucatiKiller's user avatar
  • 32.9k
5 votes

Belt driven Water pump failure?

Well, I need to do more studying before I post here. I was under the assumption that the teeth-side of the timing belt was driving the water pump. In fact, the smooth side of the belt is driving the ...
Nathaniel Davidson's user avatar
5 votes

2006 Subaru Forrester overheating and no heat

Check the overflow tank on the radiator when the car is overheated. If that tank is full, you've probably got a blown headgasket - that's how I spotted mine. For the thermostat; did you buy an OEM ...
PeteCon's user avatar
  • 8,702
5 votes

Motorcycle heats up within minutes of driving in the traffic

That shouldn't be happening You have a fan on the back of the radiator. I think @paulster2 has two very salient points he stated. wetter water possible bad thermostat I'd like to reiterate. You ...
DucatiKiller's user avatar
  • 32.9k
5 votes

2006 wrx overheats going slow but not at speed

Cools at speed, but not at slow vehicle speed. Definitely an engine cooling fan issue. It's either the fan itself or the sending units that tell the fan when to come on. Best bet is to pick up a ...
zipzit's user avatar
  • 6,539
5 votes

Is it unreasonable to expect nation chain mechanics to recognize a blown head gasket from a radiator problem before installing new radiator?

I would not immediately assume the repair shop was out to get you. Its possible, but not likely. PepBoys is a national chain, and their best most profitable behavior is to quickly and efficiently ...
zipzit's user avatar
  • 6,539
5 votes

Overheating Subaru

Subaru Thermostats are different from those you buy at OReilly and other auto stores. You NEED to buy the OEM thermostat from Subaru; the design is different. Before bothering with the thermostat, ...
PeteCon's user avatar
  • 8,702
5 votes
Accepted

Engine hot, radiator cold

Quick answer for engine overheating/cold radiator would be: a) Check there is coolant in the system: refill as needed and check for leaks. Remember to purge air bubbles: my way is that as I add ...
Aram Alvarez's user avatar
  • 3,346
5 votes

Civic overheating and hoses popping

Have the engine compression tested or leak down tested as I suspect the problem you are describing may be the result of a failed cylinder head gasket as it sounds like pressure from the combustion ...
Steve Matthews's user avatar
4 votes

Car overheats idling in traffic

I had a problem with my VW Golf overheating. I also changed various parts, the thermostat being the first as that controls the circulation of the coolant. In the end I found the cause, the system ...
Giles's user avatar
  • 41
4 votes

Car overheats idling in traffic

I had a similar problem with my 2000 Ford Focus last year. I can't remember what it was called, but basically it's a thermostat that's sits against your radiator that turns on the radiator fans when ...
Mysterfxit's user avatar

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