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slow coolant loss 900

posted by  bushleague on  Fri Oct 29 12:15 CST 2004
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Hi everybody,
I have a '96 965, and back in August I saw the coolant warning light come on as I started up the car. It shut off after about 30 seconds. I was near a parts place, got some prestone to stave off what might be a really negative event, and put in enough coolant to bring it back up to the max level. Then I had my mechanic do a pressure test on the system and he found no problem. The car has since been driven about 2500 miles --including a 1500 mile road trip-- and this morning the light came on again; I repeated the top-off.
Here's the question --and forgive me for its' basic level and probable redundancy-- where is the coolant likely to be going?
Here's some other perhaps relevant info, perhaps it's just another problem. Seems I have a bit of an oil leak at the top rear of the engine block and, 2, the car seems to be producing less power than previously.
Thanks.








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    slow coolant loss 900

    posted by  someone claiming to be tjts1 on  Fri Oct 29 20:30 CST 2004 [RELATED]

    Well there are a few basic scenarios I could imagine so lets start with the least expensive. My 960 does the exact same thing at about the same interval you describe. Every couple of thousand miles my low coolant light comes on. I just top it off and don't really worry about it. I believe mine is evaporating through the coolant reservoir cap. I remember reading somewhere that Volvo updated their reservoir caps for this exact issue. I think the newest cap is green. I have a gray cap and there also existst an older black cap. I could upgrade, but a bottle of coolant every couple of years is cheaper.
    The loss of power can be a number of diffent things like dirty air filter, stuck hot air flap, worn out spark plugs. If your engine was digesting coolant I would imagine the level going down much faster. To be safe, you could have a mechanic perform a compression check. But I doubt the coolant is related to the loss of power or oil leak.
    Good luck.
    Justin







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