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usp55 · 05-12-2009, 02:49 PM

ok thanks for the pic.

i went to the muffler guy to ask about a new cat and ive been there many times before and spent about an hour with the guy going over the car looking for my problem. he doesnt think its the car as the car basically stalled when i parked it and it wouldnt fire up. he said it it was the cat that was clogged it would atleast idle and then cut out. so he thought it was a vac leak. I left the car with him and got a call about 2 hrs later and he told me i put the egr on wrong or the gasket wasnt seated right, but that it was running now.

i picked it up car started right up, idled alittle funny for a few seconds, but ran ok. got home to look at the egr and i could be wrong but i think its ok backwards now...?

as u can see the egr is backwards and there is a little bap now and u can even see the egr tube from the header.

here u can clearly see the proper orientation of the egr

but it runs and it dosnt want to stall and starts up......WTF

so is egr now releasing pressure that cant get past the clogged cat and letting ti run better than before. kinda makes sense that i was hearing pressure escaping from oy o2 on the driverside header and the 02 sensor was actually loose (replaced with new on and tight now - prob got worse right after i got the new one on) maybe due to exhaust pressure
oh and the car still seems to be running a little hotter than normal. today is not an overly hot day and the temp was a little higher than normal and took longer to come down on the highway when the radiator was getting good air flow.

does this make sense to anybody?

05-12-2009, 02:49 PM	#15
usp55 Join Date: Oct 2007 Location: Sewell, NJ Posts: 1,044 iTrader: (2)	ok thanks for the pic. i went to the muffler guy to ask about a new cat and ive been there many times before and spent about an hour with the guy going over the car looking for my problem. he doesnt think its the car as the car basically stalled when i parked it and it wouldnt fire up. he said it it was the cat that was clogged it would atleast idle and then cut out. so he thought it was a vac leak. I left the car with him and got a call about 2 hrs later and he told me i put the egr on wrong or the gasket wasnt seated right, but that it was running now. i picked it up car started right up, idled alittle funny for a few seconds, but ran ok. got home to look at the egr and i could be wrong but i think its ok backwards now...? as u can see the egr is backwards and there is a little bap now and u can even see the egr tube from the header. here u can clearly see the proper orientation of the egr but it runs and it dosnt want to stall and starts up......WTF so is egr now releasing pressure that cant get past the clogged cat and letting ti run better than before. kinda makes sense that i was hearing pressure escaping from oy o2 on the driverside header and the 02 sensor was actually loose (replaced with new on and tight now - prob got worse right after i got the new one on) maybe due to exhaust pressure oh and the car still seems to be running a little hotter than normal. today is not an overly hot day and the temp was a little higher than normal and took longer to come down on the highway when the radiator was getting good air flow. does this make sense to anybody? __________________ 1971 Firebird Project Last edited by usp55; 05-12-2009 at 02:53 PM.