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suddenly beginning to eat coolant at 48K mi[900/1993] posted by Greg in Maryland on
Friday, 14 January 2000, at 12:02 a.m.
I'm a little concerned about the accounts of casting porosity in the 6 cyl block or head. This would certainly explain it. No external leaks, no
WP seal or gasket leaks, heater core seems OK (no smell in car, no coolant in condensate drain) no coolant indications in engine oil or ATF. Runs fine so far. Could it be leaking outboard of the exhaust valves and vaporizing in the manifold? I assume this would kill the cat or O2 sensor after a while. But no white smoke shows.
Coolant has to be going somewhere and it is doing so at the rate of about a pint a week. In winter. Perhaps more. This engine would fry and bend like a hot dog if it ever got seriously dry.
Any ideas? Has Volvo ever done a TSB or adjustment re the casting problems? Who would know? Mayday, Mayday!
Re: suddenly beginning to eat coolant at 48K mi[900/1993] posted by Tom Irwin on
Friday, 14 January 2000, at 1:11 a.m.
Hi Mayday:
Relax! Switch to decaf and/or blaze a J, (check your local ordinances).
The block porosity issue was limited to about the first 10,000 units off the line in model year 1992, only!
If it was leaking into the oil, your crankcase would be full of mayonnaise, right?
Per chance, Greg, do you have a Grey plastic pressure cap?? Hmm?
If so, you need a Green one. My wifes 940 and my 960, each with grey caps, failed within 6 mos. of each other. They tend to get little hairline cracks in the threaded portion. They spittle and sputter and ooze coolant ONLY when at temp. and pressurized. Check it out carefully.
FWIW, Stant company is selling the new green Volvo caps for half what the dealer wants, under their own name.
Also, you change your coolant right? Volvo Type C blue only? Don't believe the "Perma-Fluid" crap in your manual.
Lemme know,
Tom
--Tom Irwin 95 960, 94 940, Los Angeles, CA
Re: suddenly beginning to eat coolant at 48K mi[900/1992] posted by D.A. Edwards Wilder on
Sunday, 16 January 2000, at 4:20 a.m.
Sorry Tom but the number was 100 units US. Acording to An Internal
Memo sent by a friend {she made me a copy} in VNCA