1998 GMC Sierra cataylitic converter

1998 GMC SIERRA
224,000 MILES • 6 CYL • 2WD • AUTOMATIC
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TDP0312
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  • 1 POST
my truck would loose power while driving. and some times cut off when i would start. i had a some one read the computer and it said the egr valve was bad. well i replaced it, and it help some but ever so often it loses power while going. and when it idails the engine shakes, and tries to cut off. so do i need to replace my cataylitic conveter, and if so can i run the truck with out one?
Jun 7, 2010 at 6:05 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check if the exhaust system is restricted by a clogged Cat drop the exhaust pipe to confirm it if so-use a test pipe
Jun 8, 2010 at 2:58 AM
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