i have been noticing that after a short drive i have
coolant backing up into the reserve tank of my 1.9l.
so i figure i let some air in the system when changing
temp 2 sensor. so i have bleed the van a couple
times,20-30 min. each episode, had coolant and air
coming out the bleeder all times, and this time the
van wanted to overheat. i've been doing this in the
driveway, pretty steep so the front end is high
enough. im wondering if i may have another problem
cause i know i could not have let this much air in the
sys. in 5 seconds...
 combustion gases in the coolant?
 any other ideas appreciated.
or does it just take more attempts to bleed?

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Scott Wilson
85 GL Westfalia

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