94 Firebird LT1 with basically a stock engine. I brought it back to life after sitting a long time. Basically, when accelerating from a stop, the engine misses badly. Give it more throttle and it clears up and runs good. This doesnt happen everytime. I have deleted EGR, bypassed the EVAP purge, deleted AIR pump. I have no codes. I do have a CSV log from EE hack. Seems like there are issues with the forum right now that prevents me from attaching it.
Just to be sure, when you removed EGR and EVAP and AIR, did you likewise modify the BIN to account for those changes?
Some of those systems are intertwined with normal engine operation (maddeningly) and steveo has a whole section on his website about how that works.
If it’s been sitting for a long time I’d wonder too if the fuel filter and pump are okay. Fuel is nasty stuff and it doesn’t like sitting for long periods.
Best of luck!
1990 Corvette (Manual)
1994 Corvette (Automatic)
1995 Corvette (Manual)
you can post an eehack log if you add it to a zip file
Here is the CSV
EE hack
These files were from tonight from a "cold" start (its 97F here in Houston). I drove it a short distance. There at the end of the log it had the major hesitation, popping issue. Seems like the INT on the left bank went really low.
Posting Permissions
Reply With Quote
Bookmarks