O2 counts everywhere, BLM 143, header crack just repaired....

[chin_dude]

Just had a cracked header repaired, cars doesn't idle right jumps up all of a sudden tps=fine (all readings w/otc2000@idle), replaced sprk plugs as well, running reds 93, BLM 143 o2'S jump around from .45 by two tenths in either direction. Have replaced the O2 sensor month and a have ago with a bosch unit. Kinda new to the scan tool

btw boost gauge(aftermarket) just stopped working checked the vaccum line and it had no cracks that i could see, any suggestions?

Thanks in advance

 

[subtlt]

More detail?

Based on your note, I'd pop the hose off the back of the boost gauge and see if it's carrying vacuum. If so, it's the gauge, if not, the hose got popped off or cut during the header fix creating a large vac leak, and is probably why the engine runs like crap!

Worth a shot...

 

[Fred 86 GN]

Jumping O2s is fine. 143 BLM is not. Broken or cracked spark plug?

 

[Russ Merritt]

I thought someone said bosch sensors suck!

 

[chin_dude]

just replaced the plugs, one terminal on the coil pack was not clean so i cleaned it and put some di-electric grease on it, didn't seem to "snap/click" on like the others did. what other things could influence the BLM? what #'s should one look for?

 

[Carolinaturbot6]

http://www.turbobuick.com/forums/showthread.php?s=&threadid=38513&highlight=BLM

Maybe the discussion above will help you some.