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Thread: Cats plugged??????
08-23-2012, 10:28 AM #1
I have some power and hesitation issues on my mule, I am g
beginning to think the cats are clogged, short of cutting them off are there any tricks that really work for such diagnosis?99 K1500 Suburban LT "THE BEAST"
Hypertech III, K&N, true dual
08-23-2012, 12:15 PM #2
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The best test is doing a back pressure test. This is where you take out the o2 sensor and attach a pressure gauge. you can also measure the temperature of the inlet and outlet of the cat after running it a while. If the front is 400* or more hotter than the back, chances are that it is clogged.
You can also take out the o2 sensor upstream of the cat and see if you gain any power. It will be loud but it will tell the story!"It went together didn't it? Well then there has to be a way to take it apart!" - Me.
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08-23-2012, 08:14 PM #3
Does the power issue continue throughout driving or just when you start out from a stop?2000 Chevy Silverado 4WD Classic
2'' lift Torsion Keys and air shocks
33/12.50 Hankook Dynapro M/T
3 1/2'' down pipe back 6" Tip
Dodge Towing Mirrors
Smoked Tails, Cab Lights, and Side Marker Lights
1% Rear and Side Window, 20% Front Tint
American Racing Wheels/ With a custom black paint
Cold Air Intake
Edge Performance Chip
Custom Audio System
Black background headlights and parking lights
08-25-2012, 08:01 AM #4
08-25-2012, 10:49 PM #5
I would say plugged cats. Had a similar problem but it was just at start and it ended up being the MAF sensor
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