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mu 2001 boxster overheats if i leave the pressure release lever in the normal position. i have cleaned the 2 front heat exchangers, checked the water pump impellers, and the thermostat and replaced the coolant tank cap. i have to keep the pressure release lever up so it won't overheat but it sweats from the coolant pressure - please give me some insight on why it overheats when it is pressurized - thanks
__________________ This post was auto-generated based upon a question asked on our tech article page here: Pelican Porsche Tech Article - Coolant Tank Replacement - Porsche 911 Carrera - Porsche 996 Carrera (1998-2005), Porsche 997 Carrera (2005-2008) |
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06-06-2013, 05:13 AM
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Moderator
Join Date: Jul 2012
Location: New England
Posts: 3,189
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Sounds like you may have a faulty head gasket. Especially if you have confirmed all other cooling system components are functioning. Double check that there is no air trapped in the system. If not, check the cooling system for C02, this is the best way to test for a head gasket.
- Nick |
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06-06-2013, 05:13 AM
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Registered
Join Date: Jan 2008
Location: NJ
Posts: 1,186
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When you say that you have cleaned the 2 front heat exchangers does that mean that you have removed the bumper cover, separated the air-conditioning radiators from the engine radiators and cleaned between them and the engine radiators?
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2013 991.1 Carrera S Cab 2004 996 Turbo CAB X50 sold 2003 996 cab 6 speed Sold 1972 RS 3.2 twin plug short stroke crank fire, roll bar, sold DE instructor since 1985 Last edited by FPB111; 06-07-2013 at 02:46 PM.. |
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06-06-2013, 08:20 PM
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Registered
Join Date: Jan 2008
Location: NJ
Posts: 1,186
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Like this?
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2013 991.1 Carrera S Cab 2004 996 Turbo CAB X50 sold 2003 996 cab 6 speed Sold 1972 RS 3.2 twin plug short stroke crank fire, roll bar, sold DE instructor since 1985 |
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06-07-2013, 02:48 PM
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Registered
Join Date: Jan 2008
Location: NJ
Posts: 1,186
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The bail is a vacuum break not a pressure relief lever.
It, the square plastic shaft, is up when the engine is hot, bail flipped or not. The bail holds it up to allow pressure equalization as the engine cools and burps the cooling system.
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2013 991.1 Carrera S Cab 2004 996 Turbo CAB X50 sold 2003 996 cab 6 speed Sold 1972 RS 3.2 twin plug short stroke crank fire, roll bar, sold DE instructor since 1985 |
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06-11-2013, 08:53 PM
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