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#1
07-08-2006, 05:41 PM
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1983 EURO 500sl FLOOR HEAT
FOR SOME STRANGE REASON I GET EXCESSIVE FLOOR HEAT AND I DONT KNOW HOW TO STOP IT....
THIS CAR IS NEW TO ME AND I 'M POSITIVE THE AC VENT -HEAT SETTINGS ARE CORRECT... ANY ADVICE 
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#2
07-08-2006, 09:06 PM
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Need more info
Kinda hard to help you without more info. Have you shut your blower off and felt around the heat ducts for heat. Could you have one of those CA emission setups where you have two or three CATs under the car and is one of them heating up? I have a '84 500sl and never notice excess heat on the floor boards unless the heater was running full blast.
__________________
I really gets fun when they all don't run 84 500SL 99 Jeep XJ 93 Jeep YJ 03 Custom Softail
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#3
07-08-2006, 11:52 PM
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Heat shields?
Have you checked to see if the heat shields are still in place?
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With best regards Al
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#4
07-09-2006, 12:36 AM
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If your cats are plugged, then the backpressure and resulting heat will build up around the exhaust manifolds/pre-cats. Like kbannister and alabbasi say, check for heat shielding and double check the floor vents when driving just to make sure no hot air is creeping through.
When you say excessive floor heat do you mean you feel hot air or is it the temperature? Pull the carpets behind accelerator pedal and see if the floors are hot to the touch.
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#5
07-09-2006, 02:08 AM
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Is your exhaust system composed of original MB parts? Some euros were converted to USA EPA specs with other than MB parts. Is some cases, the converters installed oversized cats to ensure the conversion would pass the EPA Federal Test Procedure. You may have a cat that is oversized or poorly installed on your vehicle and the heat shielding, if still present, may not be effective. Also, if cutting the original exhaust pipes and welding in the modification is how the converter installed the cat, it may be too close to the heat shields. I'm not familiar with the differences between the '83 euro 500SL and the MBUSA models ’83 380SL or ’85 500SL, but MBUSA parts may not fit the euro model; hopefully they do. You need to check the part numbers from the headers to the muffler.
Last edited by tgolden; 07-09-2006 at 02:42 AM.
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#6
07-18-2006, 06:08 AM
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Update On Problem
Car is original I think and has only 1 converter on one of the pipes underneath.
Could it be that the back pressure from a bad converter can also cause the exhaust gasket to blow because only on that side I have a gasket leak.... As I press on the gas I feel more heat... At idle it is just warm.... Blower motor is off. Are there any vents that could be open on the floor...If so, I sure can't find them....
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