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Problem Reported: Low Pressure AC Hose May Leak at Crimped Connection
September 15, 2010, 10:09 PM
<p>The AC system may blow warm air due to refrigerant loss caused by a leaking low pressure AC hose. These hoses commonly develop a leak at the hose crimp connection.</p>
Problem Reported: Failed External Seal on Engine Oil Cooler May Leak
May 27, 2010, 11:09 AM
<p>Nissan Altima's with the 3.5L V6 engine can experience oil leaks from the engine due to a leaking oil cooler o-ring. This leak often occurs after an oil&nbsp;change because the oil filter is attached to the cooler and removing and installing the oil filter can alter the oil cooler o-ring sealing capabilities.&nbsp;</p> <p>Repairing the leak requires removing the oil filter and the oil cooler and replacing the 0-ring. In some cases, it's recommended you replace the oil cooler but if this is suggested, be sure to get validation from the mechanic as to why they aren't replacing just the o-ring.</p> <p>In severe cases where the oil has been leaking for a considerable amount of time and the oil level drops very low, owners have reported noise from the engine due to low oil pressure and/or a check engine light on with an&nbsp;<a href="/OBD-II-Code-P0011-a-camshaft-position---timing-over-advanced-or-system">OBD-II Code P0011 DTC</a>&nbsp;set.&nbsp;</p>
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