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internal88
internal88, Auto Mechanic
Category: Car
Satisfied Customers: 2517
Experience:  I've been working with automotive industry for almost 20 years. I also have an engineering background. Saving one car at a time.
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WHAT TO DO WHEN TEMP GAUGE GOES UP

Customer Question

WHAT TO DO WHEN TEMP GAUGE GOES UP
Submitted: 4 years ago.
Category: Car
Expert:  internal88 replied 4 years ago.

internal88 :

Hello and welcome to justanswer

internal88 :

If you're on the road and cannot pull in the curb, you will have to turn up the heat and turn on the blower.

JACUSTOMER-jsn3eazn- :

Why

internal88 :

By turning up the heat it actually helping the engine to dissipate the heat.

internal88 :

The heater core inside the core is disspating the heat source from the engine.

internal88 :

If you're idling then shut off the engine immediately.

internal88 :

So next time when you're on the road and see the temp gauge goes up.

internal88 :

Turn up the heat and the blower.

internal88 :

And slowly pull off to the side and shut off the engine.

internal88 :

Remember do not open the radiator cap!

JACUSTOMER-jsn3eazn- :

Is there something wrong with the temp gauge? I also took off the radiator cap(when cooled) and noticed a lot of brown sludge.

internal88 :

Just let the engine cool down and see what is causing the overheat.

JACUSTOMER-jsn3eazn- :

I guess I need to know the cause so I can get this fixed

internal88 :

It is possible that the temperature sender has issue.

internal88 :

Temperature sender is usually mounted on the termostat housing and engine head.

JACUSTOMER-jsn3eazn- :

is this expensive to fix?

internal88 :

Temperature sender - No.

internal88 :

The brown sludge is metal from the radiator.

JACUSTOMER-jsn3eazn- :

Should i get my radiator flushed out too? It has been a couple of years

internal88 :

Is there any coolant in the radiator?

JACUSTOMER-jsn3eazn- :

In the overflow tank I could see some?

internal88 :

No, not yet.

internal88 :

I would recommend you to find out why the engine is overheated.

internal88 :

There are several possiblities.

JACUSTOMER-jsn3eazn- :

which are?

internal88 :

1. Lack of coolant - coolant leak

internal88 :

2. thermostat is bad

internal88 :

3. headgasket is bad

internal88 :

4. coolant fan is not working

internal88 :

5. The radiator is clogged.

internal88 :

6. The coolant itself is bad.

internal88 :

7. Faulty radiator cap.

internal88 :

That's it.

JACUSTOMER-jsn3eazn- :

I have been afraid if the head gasket all along as I know there have been problems with this subaru. Worth getting fixed?? Costly??

JACUSTOMER-jsn3eazn- :

we

internal88 :

It depends how much you like the car.

JACUSTOMER-jsn3eazn- :

that really doesn't help? Are we talking big $$$$

internal88 :

You could check the headgasket by doing the following

internal88 :

You talking about $1000 to start with.

internal88 :

The mechanic will need check for the engine head.

internal88 :

He needs to check if the head is cracked.

internal88 :

If there is a minor cracked then he has to replace it.

internal88 :

The head cost another $600

internal88 :

What year is this car?

JACUSTOMER-jsn3eazn- :

well i do have a trusted mechanic so i will at least have some options 2000

internal88 :

Do you see white smoke from the exhaust?

JACUSTOMER-jsn3eazn- :

no

internal88 :

I mean white constant smoke

JACUSTOMER-jsn3eazn- :

no

internal88 :

Open your radiator cap - turn ON the engine. Do you see bubbles?

internal88 :

If yes- the head gasket is leaking.

JACUSTOMER-jsn3eazn- :

i will do that in the am

internal88 :

Also check the tip of the spark plugs

internal88 :

If is really clean then you have headgasket problem.

JACUSTOMER-jsn3eazn- :

ok thank you

internal88 :

Also check if you see coolant on the tip as well.

internal88 :

There are all the symptoms of headgasket issue.

internal88 :

Subaru are known to have headgasket issue.

internal88 :

issues.

internal88 :

Do you have any further questions?

internal88 : Hey did you check the engine for head gasket issue?