More mysteries from the Subaru.

[Vovchandr]

@88slowmarro

vlad use a stock subie t-stat most aftermarket ones have issues due to the stages at when they open .we see it a lot at the shop , the cold bog could be a m.a.p sensor out of wack

@crAppAchic0

Not sure about the throttle blip/idle drop one, but the heating/cooling issue- I’d check to see about a sticking t-stat- especially at the higher rpm’s- the t-stat could have a bad spring that just blows wide open, letting too much coolant pass through, dropping the temps too much, too quick. Just a guess, sir- but good luck!

Seems like that was exactly the problem.

Stocker is in, cooling system fixed.

Now to troubleshoot the idle.

I’ll be going after MAP or IAC next to see if one of them is making it act funny.

Right now it has changed to the point where it idles real low for most of the time (500rpm or so) with a rare occasional self controlled blip upto 900/1000rpm for a second or two just to go back down to low idle.

Also my damn knock sensor is dead and keeps throwing the light, which is throwing the timing on a roller coaster ride :ahh