Hi guys, thanks for taking time to read this.
Brief history on my 2009 Legacy 2.0 Diesel Irish non import RH drive 5SP Manual.
At 245,000km my engine went due to cracked crankshaft. Got new short block and all went exceptionally well until recently, 295500km.
I noticed gurgling sound from what seemed to be behind dash especially first thing in morn. Checked coolant and was below min when cold. Topped it up checked rad cap and oil cap and all fine, rad cap seals look fine and it springs. Oil cap is clear of anything other than oil so is dip stick no white gunge or water drops. Exhaust smoke a bit white on first start of day, literally a big of then clear but it always has been that way from day one.
Heater gradually got less warm over about next 1000km and now only blows cold. Checked cabin filter and was clean- hoovered out fins anyway!
Today I was on motorway at 140km continously for about a hour in total and at 100km for previous 45min all free moving constant momentum. Temp gauge stayed in normal range, not even fully horizontal. But when I took off hard from tool booth c4000 rpm the gauge crept up slightly over half way/exact horizontal position not even close to red zone. I slowed slightly and it returned to just under half way again (maybe this normal but only noticed it as I was paying attention to gauge for entire journey due to probs mentioned above)
My question is can any help solve the no heat in cabin problem based on info above?
A/C isn't cold either but that isn't an issue for me in Ireland but may be related.
Could it be blocked core/matrix although both hoses into firewall are warm to touch after about ten min idle.
Thanks again any help greatly appreciated.
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