Can clogged cat damage motor?
Can clogged cat damage motor? I have been running with the P0420 code for awhile so I assuming I have a clogged cat. Car was running fine just had SES. However, recently I have been getting a really rough idle. Sounds almost like it's knocking at idle but the scanmaster shows nothing. Doesn't do it when cold. Once driving the sound seems to be gone, but at WOT I get about 3* of knock. Did I wait to long to get cat fixed and it melted something?
Originally Posted by LS1mtZ
I have been running with the P0420 code for awhile so I assuming I have a clogged cat. Car was running fine just had SES. However, recently I have been getting a really rough idle. Sounds almost like it's knocking at idle but the scanmaster shows nothing. Doesn't do it when cold. Once driving the sound seems to be gone, but at WOT I get about 3* of knock. Did I wait to long to get cat fixed and it melted something?
talk to JZ'STA he lives near u he can help u out with that, just send him a pm.
A cat that does not function properly for any number of reasons. If you cat was truly clogged, then egine would be running rougher and very sluggish. Either get a new cat or some o2 sims, or simply turn off the codes via tuning.
