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Old 09-05-2000, 06:41 PM
jeffsr jeffsr is offline
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Join Date: Jan 2000
Location: New Bedford, MA USA
Posts: 1,583
This is not uncommon at altitude. Most caps are set to hold to about 14-15 psi at sea level. I can't give you the exact altitude/pressure correlation, but, the relative pressure inside the cooling system increases as altitude increases, even w/o overheating. Solution-> high pressure cap for life above the clouds. Or, your cap is not holding it's rated pressure and needs to be replaced.

Jeff Lawrence
1987 300e
1989 300e
2000 Dodge Grand Caravan SE

[This message has been edited by jeffsr (edited 09-05-2000).]
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