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IF you bought an Arc - 3.0t V6, Auto trans, ventilated leather seats, etc., this is not good news. The V6 has a timing belt which must be replaced every 60,000 miles. Any amount of mileage past 60k on this belt is living on "borrowed time". If this is your car, and if the belt snapped, the damage can be repaired, but at great expense. When the belt snaps, the valves stop wherever they are, and the pistons keep pumping up and down for a while, driven by the transmission. The pistons collide with, and bend the extended valves.
Last I heard, there were no options for rebuilding these heads, as the parts are simply not available. Either new heads, or good used heads must be sourced. Four years ago, the going rate to swap out damaged heads on a 9-5 V6 was over US $5,000.
If the car is a Linear or Aero with the 4 cylinder 2.3, and the timing chain broke (rather rare, but possible), repairs are much less expensive. Basically, the pistons still hit the valves, but all of those parts are available, so the head does not need to be exchanged. Still not cheap, but probably half of what the V6 would cost to repair.
If it is a 4, another possibility is a sludged up motor. The sludge forms from the oil, and collects in all the passages, and eventually starving the bearings of oil, even though the dipstick says "full". These usually give signals in advance, like a blinking oil light, but if the motor is completely sludged up, the usual remedy is to source a new motor. Otherwise, the existing motor would have to be completely torn down to component parts, the block and head tanked to thoroughly clean them out, and it all put back together. A replacement motor is usually cheaper than all that.
_______________________________________
Current:
2002 9-5 Aero Kombi Cosmic Blue
2000 9-5 SE sedan, Imola Red
1990 900S Rose Quartz, Auto
Past:
1999 9-5 LPT Combi
1999 9-5 LPT sedan
2002 9-5 Arc
1990 900 5-speed
1986 900 turbo Convertible
1991 9000 turbo
1980 99 GLi
1986 900 turbo
1986 900 S
1991 900 turbo
1984 900 turbo
1976 99 GL
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(#1140) 
[Profile/Gallery]
(more from Larry West) on Mon, 19 Dec 2011 07:13:00
, Sun, 18 Dec 2011 20:36:04