Question about 1998 Subaru Forester

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My 98 Forester runs great without a thermostat. When I put a subaru thermostat in and left it idoling for an hour it overheated after I took it for a ride up the road. I thought we got all the air out of it but I read you should park it uphill to make sure you get the air out? I think if it was a head gasket it wouldn't be running great as it is, no oil and water mix or smell. I just need more heat in the bitter cold that is gonna hit New England. Any thoughts?

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Getting all the air out is actually quite simple. Fit the thermostat. Make absolutely sure you know which way it goes in: ask the dealer if you are unclear. Put it in backwards and it does not work properly. Fill the radiator, and start the engine and let it idle. In about 5 minutes, the thermostat will open and the coolant level will go down. Stop the engine, fit the cap and top up the coolant. Now, squeeze the top hose, say, 10 times: you'll hear the coolant gurgle a bit. Remove the cap and top up the coolant. Start the engine and repeat. Eventually the gurgling will stop and all the air is out of the engine. Usually takes 2 or 3 iterations.

Do the final top up and take it for a run.

Posted on Sep 08, 2017

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Posted on Jan 02, 2017

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  • 10 Answers

SOURCE: Subaru Forester 1999 GLS spark plug gap?

spark plug make= ngk
plug type =BKR6E-11
GAP=1.1mm A TURBO MODEL WILL BE 0.7-0.8 MM GAP

Posted on Jan 23, 2010

  • 119 Answers

SOURCE: subaru forester heater

take back to the dealer,hopefully the will find that the blend door cable is off or not adjusted properly

Posted on Jul 14, 2009

  • 10 Answers

SOURCE: 2000 subaru forester ignition coil wiring

Are there any other possible problems, or you are just not receiving spark at all now?

The coilpack could be dead and just need replaced. If you have a voltmeter or a test light, check the wiring on both sides of the coilpack harness to make sure it is receiving power.
I don't believe Subaru used ignitors past '99, but if they did, your should be located on the firewall behind the throttle body. Make sure it's plugged in and receiving power.

Coil packs do go bad from time to time. I had to replace mine in my
'98 Impreza a while back.

Goodluck!

Posted on Mar 16, 2010

  • 6 Answers

SOURCE: subaru forester 2001 has a slow acceleration.

how many mile is on the car it could have a bad muffler or possibly need a tune up

Posted on Jul 11, 2010

j_del
  • 1586 Answers

SOURCE: Subaru forester PO 171 code

Your fuel system is too lean. It's typically the primary O2 sensor (on the pipe between the engine and the catalytic converter). The mass airflow sensor is also possible but the O2 sensor is a wear item requiring periodic replacement and is more likely.

Posted on Jul 14, 2010

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1 Answer

Why has my 2003 Subaru Forester lost power when its hot?


it sounds as if your car is overheating. Alot of the newer cars after 2001 have a computer program built in that if you are over heating it will shut down a couple of cylinders by eliminating the spark or by regulating the fuel going in I had the same problem on a 3.4 litre Chevy engine and thats what it was doing basically when overheating or getting close to it since the engine would sustain alot of damage due to the engine being aluminum it protects it this way and still allows you to get off the road. your radiator needs to be replaced immediately do not wait until it completely blows off the you could be going for a water pump and thermostat.

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Either option is possible. It could have been defective, but normally you would have known if it had been installed before by looking at it.
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Will a left headlight from a Subaru Forester 99 fit a Subaru Forester 98?


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Feb 02, 2010 | 2000 Subaru Forester

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How do you reset the computer on a 1998 subaru forester without the wireless remote?


I am thinking you mean the alarm system. If so, Just locate the box under dash by where your left knee sits. It is about 4" x4" x 1". It has a wire lead that has a small button on it. Just push and hold the button for about 15 secounds and it will reset itself. That should stop the marker lights from flashing. Good luck and hope this helps. Have a great day.

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Replaced leaking water pump now engine keeps overheating unless i put in blank thermostat in 1998 subaru forester 2.5 twin cam. bleed air from system- water pump turns counter clockwise but fins in pump...


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Dec 11, 2009 | 1998 Subaru Forester

1 Answer

I have a 98 Subaru Forester and the engine fan constantly runs, even when you first start the car. What could it be?


The fan relay is stuck it must be replaced or the coolant temperature sensor for the fan is faulty, I would replace the relay first.

Jul 10, 2009 | 1998 Subaru Forester

1 Answer

1998 Subaru Forester


Would need to know more. Did the 'check engine' light come on about the time you first noticed this happening? If so, have the code checked for diagnosis. I would suspect FUEL TRIM error (or similar) in the computer compensating the fuel injection when the car is put in gear versus in Park or Neutral when cold.

Jan 22, 2009 | 1998 Subaru Forester

1 Answer

2001 Forester overheating


First clog that can happen is a stuck (closed) thermostat. Check and replace

Jul 29, 2017 | 2000 Subaru Forester

4 Answers

Hazard lights flashing


I have a 97 subaru outback and encountered the same problem. It is a security device on all newer subaru's. After changing or charging the battery, leave the negetive battery cable disconnected. Turn the key to the "on" position, then reconnect the negative terminal. This will stop the flashing.

Jul 06, 2008 | 1998 Subaru Forester

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