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Old 02-02-2011, 05:25 AM   #1
slider95
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Default What is the easiest way to flush heater core 1995 2.2

Should I remove hoses from firewall or farther down the line ?

Don't want to lose alot of coolant.

Temp. gauge runs about in the middle, does that sound right ?

Car has new waterpump and thermo. but still has hardly any heat till I start driving.

Idle heat sucks, hell my fans don't even turn on.
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Old 02-02-2011, 05:36 AM   #2
Psychoreo
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From the firewall will be hard to flush, try and get closer to(or at) the radiator so you have some hose to work with. Put the input line in a jug/bottle/pan and use either a hose or compressed air through the outlet (so it's flowing opposite of normal.) If you use air, fill it back with water a couple times until it comes out clear.

There's a decent video on youtube of someone doing this, just not on a subaru. Same process.
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Old 02-02-2011, 05:38 AM   #3
Psychoreo
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Oh, and your temp gauge will pretty much ALWAYS run in the middle. From like 120*-200ish*. It's "normal" range is wider than Steven Tyler's mouth
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Old 02-02-2011, 08:22 AM   #4
silver2004impreza
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It's done on a Jeep, but the process is the same.
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Old 02-02-2011, 08:25 AM   #5
Psychoreo
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That's the video I was thinking about
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Old 02-03-2011, 04:29 AM   #6
slider95
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Thanks for the video, never thought about youtube.

I'm going to try this but instead of CLR, i'm going to try Vanish toilet bowl

cleaner and flush it out with hot water from the washing machine hook up.

What could go wrong
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Old 02-06-2011, 04:40 PM   #7
sykosoft
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How did this go? I have a similar problem with my 06. I thought I might try reversing the hoses and running the car to backflush the heater core, but I didn't have any luck disconnecting the hoses at the firewall (those things are on there good!). From there they connect to something else that's not easy to reach, so that's why I was trying at the firewall. I'm not sure what that middle thing is though.
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Old 02-07-2011, 06:28 AM   #8
slider95
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It didn't go very well, hoses at firewall wouldn't to come off and I didn't want to ruin the core.

Probably have to slit hoses lenght wise to get them off, so I ordered new hoses.

Then Boiler in house went down and finally got that fixed, after 2 days.

Working overtime 2nite so I won't get to it till Tues. afternoon.

I did my jeep cherokee similar to the video about 3 weeks ago.

It has better heat but not much.

Going to use some CLR soaked in the heater core and see how that works.

Hopefully I get these done both Tues. night.
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