Question about 1992 Buick LeSabre
Car runs really rough when in gear at a stoplight and smells of rotten eggs from the exhaust?
REMOVE UPSTREAM 02 SENSOR INSTALL VACCUM/PRESURE GAUGE START VEHICLE IF THERE IS MORE THAN 1 PSI EXHAUST HAS A RESTRICTION, CAT/MUFFLER/COLASPED IN EXHAUST PIPE INTERNALLY
Posted on Oct 17, 2012
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Posted on Jan 02, 2017
SOURCE: Car died rotton egg smell
Not sure if engine coolant smells like rotten egs when it burns inside the cylinders , but it sounds like you may have blown a head gasket. Coolant and/or oil could be getting inside combustion chamber. Another possibility is that the catyletic converter might have broken up and colapsed onto the screen where it goes into the exhaust. Might give the rotten egg smell and block the exhaust enough to cause backpressure sufficient to cause the engine to run poorly too.
Try putting your palm over the exhaust pipe , if the exhaust is coming out in pulses (pop ,pop,pop) thats normal , if it is just slowly flowing out with no noticable pulses , I would check into the cat converter problem.
Posted on May 07, 2009
Sounds like a bad catalytic converter. If you were feeling a lot of heat under your feet while driving (before it stopped completely), this is one of the symptoms of a bad catalytic converter. The smell is sulphur backing up and not efficiently moving through your car's exhaust.
Posted on May 06, 2009
Did you ever find out what is wrong with your car? I have the same car and same year and the same thing has happened to me..
Posted on Aug 30, 2010
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