AppleJack Posted September 26, 2005 Share Posted September 26, 2005 I just replaced the starter motor on my SC400 - and accidentally had two iginition wires flip flopped. Of course it ran pretty rough - and I actually went around the block with it (5 minutes) thinking maybe there was some carbon build up after I clean out many passages in the throttle body - manifolds etc ... Well, I've now corrected the ignition cables and it runs fine - but now I notice that when I shut off the engine - I hear that thermal cooling sound - like "clinking" from underneath the passenger side under the vehicle. For years I've hear some clinking from cooling and its normal to have some - but now it's pretty intense and I"m wondering if I could have screwed up my catalytic converter? I also notice a fair amount of heat generated from beneath my vehicle if it has been running for 15 -20 minutes and as I open the door on the drivers side the heat just swoops up... Does my car have 2 catalytic converters? Is there an easy way to tell without removing the catalytic converter? Quote Link to comment Share on other sites More sharing options...
SKperformance Posted September 26, 2005 Share Posted September 26, 2005 Your new plugs are probably heating up the exhaust more effiecently .It is just better burn causing the cooling effect to be more pronounced. Mine used to do that all the time too. Quote Link to comment Share on other sites More sharing options...
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