precat worries
#1
Lexus Champion
Thread Starter
precat worries
I have a 93 SC4 with 142,000 miles on it. After the car is warmed up, if I set and idle I can smell strong sulphur smell. I have no center cat. Does anyone have excpearince with clogged pre cats? I have no CEL and car the runs great.
Last edited by over40driv; 09-02-12 at 02:37 PM.
#3
Lexus Champion
Thread Starter
From what I remember the precats cause some restriction to allow the engine to warm up quicker. The material in the precats heat and allow more heat and exhaust to flow. How do we know when its time to have them replaced. And I am assuming this is where my sulphur smell at idle with engine warm is coming from.
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radiokilla
LS - 1st and 2nd Gen (1990-2000)
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02-20-11 02:30 AM