Question about 1999 Oldsmobile Silhouette

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Might have a blown headgasket as well or timing belt.

My mechanic can't figure it out just yet, but the car had been overheating, and our temps these past two weeks have been an average of 10 degrees. So it died and he can't figure it out as of yet. I'll let you know how much tomorrow once I get the problem figured out and an estimate.

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  • William Hoffhines May 11, 2010

    First check/replace thermostat.

    If you have a Dual Overhead Cam engine if the timing belt slips/breaks/etc. then other 'bad' things can happen; valve or stems can break, overheating can ruin an engine in short order also. Just have your mechanic go down the list i.e. troubleshooting this is usually straightforward, don't exclude a 2nd opinion (mechanic).

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My van blew the rear head gasket costing about 2,000 to repair. It was caused by the DEXCOOL coolant eating away at the gaskets. Make sure that when repaired you get the updated gaskets.

Posted on Feb 18, 2009

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My 2010 journey is over heating what can I do to stop it


Figure out why and correct this issue. There are numerous things that can cause overheating and many are beyond the average do it yourself repair. Some possible causes are: failed thermostat, failed water pump, broken water pump belt, low coolant level, failed cooling fan, failed electrical cooling system, failed heater core, leaking hose, air pocket in cooling system, failed radiator cap, failed radiator, cracked head, cracked block, failed headgasket etc. Beware it only takes one time overheating to damage the cylinder head or headgasket. Get that checked.

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I have a 2002 Jeep liberty 3.7 V6. There was white cloudy exaust on start up for a little bit. Dip stick oil looked strange so I drained the oil. It was Chocolate milk looking oil. It dont think it had...


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Well it sounds like you have covered most of the bases.
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Do you know if the radiator fan is coming on when the engine reaches 220 degrees ?
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Overheating can cause knocking.Your best bet is to replace your motor because usually the knocking noise is caused by a spun bearing which would cost a lot to repair.

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