No check engine light codes. Replaced fuel filter. No difference. Used 1 can of throttle body cleaner and managed to get it to rev for maybe 2-5 minutes on it and noticed front of cat converted was cherry red so I shut it down 2 minutes to let it cool, then it went back to unable to rev. Next I replaced MAP sensor. No difference. I don't think there are any vacuum leaks. I don't think the converter is bad because symptom came suddenly. No performance issues before. I am not sure if the EGR valve, Throttle Position Sensor or Fuel Pressure Regulator should be next. I don,t have a fuel pressure tester but pressing the valve shot fuel hard.
HAVE YOU REPLACED THE SPARK PLUGS AND IF SO ARE THE GAP RIGHT;CHECK THE AIR FILTER,GAS FILTER ??
Car stalls when giving it gas. changed o2,tps,iac,map. fuel pump and filter are new. no vacume leaks
I had the same issue with my lumina and it was also turning the cat cherry red and fumes were wafting as well. It turned out to be a bad coil pack, the fuel was getting pumped through the system and pooling in the cat, the exhaust was heating it causing the cat to heat up and smoke. changed the coil pack and it worked fine. it was also running rough as hell before that.
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If the cat is red then it is probably plugged if the motor can't exhale it wont run at high rpm
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I had recently put a bottle of Techron fuel cleaner through the system. Cat converter only red hot during high rev session with throttle body cleaner. Will recheck vac lines but had checked quite well already.
if catalytic became red hot, probably screen inside cat. is broken and causing bad exhaust flow restriction,that can occur all of a sudden! unhook cat. from motor side, try car!
recheck the vacuum lines...i use to have one of these luminas...and there was a hose that use to pop off all by itself at times..causeing it to want to stall, check near and around the throttle body andintake manifold...it was a fairly long hose
HAVE YOU TRYED RUNNING A BOTTLE OF FUEL INJECTION CLEANER IN THE GAS TANK TO MAKE SURE YOU DONT HAVE ANY CLOGGED INJECTORS ?
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