Re:expansion tank's sensor leaking coolant?? solved! but.....

[David Liu <dyliu@pacbell.net>]

yup, you're right ian (my friggin' mechanic toruqed it down way too tight
and it had sheared the barrel body between the threads and the hex head)!
it was even losing 2 liters per 2 blocks (no kidding!) it got real bad to
the point of overheating..... (about two needle widths above the led, about
halfway between the led and max) - i was WORRIED!

so, i replaced it today and the car engine was still overheating and the
fan didn't come on so i had to open up the radiator inlet and pour coolant
through the hose to the engine and then do the same for the radiator. then
the fan would come on and seemingly work.. so i guess that's ok for now
(we'll see tomorrow under regular driving)

BUT!!

when i went to the back of the car i noticed that the exhaust was spitting
out a nice puddle of water (it seemed like it) after 15 minutes or so of
running the engine while testing the coolant system. (i'll post another
email about this one) is my head gasket shot as a result of the
semi-overheat???

dave


At 01:00 PM 7/6/99 -0700, Ian Overholt wrote:
>It sounds like the sensor is broken.  This happened to me.  I pulled the 
>plug off of the sensor so I could unscrew it and the sensor came off with 
>the plug leaving the threaded part of the sensor still in the expansion 
>tank.  The sensor had cracked and coolant was leaking out of the crack.  It 
>sounds like you have the same problem.  $10 for a new sensor, and no more 
>coolant leak!  :)
>
>Ian Overholt
>'88 16v
>
>
>----Original Message Follows----
From: David Liu <dyliu@pacbell.net>
>To: scirocco-l@scirocco.org
>Subject: question? coolant expansion tank's sensor-area leaking  coolant??
>Date: Mon, 05 Jul 1999 15:59:09 -0700
>
>
>hey all
>hope you all had a good 4th. as i went out the car today  noticed a small
>dried puddle of what looked to me like coolant underneath the driver's side
>front wheel. i popped the hood, took a look and nothing.. so i figured i
>coincidently parked my wheel over someone else's mess. well, on the way
>back i stopped the car and decided to take another look. sure enough, not
>10 seconds after i went to prop open the hood i saw a puddle of coolant
>coming from around the driver's side front wheel. after propping open the
>hood, i saw coolant leaking from the expansion tank's sensor - upon closer
>inspection (the engine's still hot) i noticed that the coolant was coming
>from four sides of the sensor, so i thought maybe this was normal. plus,
>the expansion tank has this little "bridge" of sorts, and when the coolant
>leaked from the center where the sensor is, it looked like this was the
>planned escape route for coolant. i'm going back to the car in a few
>minutes to take another look (and bentley's made no mention of this). is
>what i've experienced normal??? or did my mechanic put on the sensor
>incorrectly thereby leaving some gap exposed??
>tia,
>dave
>
>
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