Clogged cat?
Thread Starter
Safety Car
Joined: Sep 2002
Posts: 4,030
Likes: 6
From: Maryland
Clogged cat?
Could this reasonably be anything other than a clogged cat:
--On Sunday, in driving home in traffic on a rainy, muggy day, the engine idle suddenly got really rough, under load or not. If left running, the engine would ultimately stall.
--Yesterday, I drove the car again(had ditched it Sunday--did not make it home). Car was fine for over 20 minutes, and when it reached 190 deg on oil temp, poof, the engine idle got rough as before. I let it cool a little, and again as soon as it hit 190-192, it got rough. Finally, I let it cool, and applied a towel to the cats to cool them. That got me the last 5 miles and home.
Thanks for everyone who replied to my first post and this one!!
--On Sunday, in driving home in traffic on a rainy, muggy day, the engine idle suddenly got really rough, under load or not. If left running, the engine would ultimately stall.
--Yesterday, I drove the car again(had ditched it Sunday--did not make it home). Car was fine for over 20 minutes, and when it reached 190 deg on oil temp, poof, the engine idle got rough as before. I let it cool a little, and again as soon as it hit 190-192, it got rough. Finally, I let it cool, and applied a towel to the cats to cool them. That got me the last 5 miles and home.
Thanks for everyone who replied to my first post and this one!!
Melting Slicks
Joined: Jan 2003
Posts: 2,167
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From: What did the 5 fingers say to the face? SLAP!!
Re: Clogged cat? (sothpaw2)
I would bet it's anything but a clogged cat. You said you let the car cool, that's why you got it home the last 5 miles. A clogged converter is clogged regardless of temperature. Engine/oil temp shouldn't make one bit of difference
Race Director
Joined: Feb 2003
Posts: 16,475
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From: Kingman AZ
Cruise-In VII Veteran
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
Re: Clogged cat? (sothpaw2)
Find a shop with a laser temp sensor gun. They can measure the temp before the cat and after the cat to find out if it is clogged. Good luck! :eek:
Racer
Joined: Jun 2003
Posts: 308
Likes: 0
From: San Antonio TX
Re: Clogged cat? (sothpaw2)
If the cat is clogged it will glow :madbright red:mad when hot. I know from experience. It happened on my '96 Firebird.
It will also mess w/ your O2 sensors and in turn your fuel/air ratio.
It will also mess w/ your O2 sensors and in turn your fuel/air ratio.
