100% b2 ltft
#1
Teching In
Thread Starter
Join Date: Mar 2006
Location: KENTUCKY
Posts: 15
Likes: 0
Received 0 Likes
on
0 Posts
100% b2 ltft
i have a buddy with a 1998 z28 with 5.3 heads #206, CC 273XFI, typhoon intake and 85mm TB, pacesetter midtubes. we been tuning it just fine then one day the B2 LTFT is bottomed out -100% so im like wow looked at o2 voltage and its still moving like normal and car runs like a turd, ive tried reseting the fuel trims via hp tuners and it wont even move a bit off -100. then i tried to do it while the cars not running/key on and still nothing.
any help would be awesome, im leaning towards ecm messed up....
any help would be awesome, im leaning towards ecm messed up....
Last edited by firebird446; 01-18-2011 at 11:53 PM. Reason: clarify not running/ with key on
#2
TECH Fanatic
iTrader: (5)
Join Date: Sep 2008
Location: Salem/Keizer
Posts: 1,120
Likes: 0
Received 0 Likes
on
0 Posts
i have a buddy with a 1998 z28 with 5.3 heads #206, CC 273XFI, typhoon intake and 85mm TB, pacesetter midtubes. we been tuning it just fine then one day the B2 LTFT is bottomed out -100% so im like wow looked at o2 voltage and its still moving like normal and car runs like a turd, ive tried reseting the fuel trims via hp tuners and it wont even move a bit off -100. then i tried to do it while the cars not running and still nothing.
any help would be awesome, im leaning towards ecm messed up....
any help would be awesome, im leaning towards ecm messed up....
#3
Teching In
Thread Starter
Join Date: Mar 2006
Location: KENTUCKY
Posts: 15
Likes: 0
Received 0 Likes
on
0 Posts
I wish it was that easy done checked all injectors. I should still be able to reset trims and be zero once again but it don't. I checked for intake leaks around gaskets, TB, intake boot, maf, exhaust leaks and nothing found.
#6
Teching In
Thread Starter
Join Date: Mar 2006
Location: KENTUCKY
Posts: 15
Likes: 0
Received 0 Likes
on
0 Posts
I did that and noticed I was at 25 PIDS and you was right I backed it down too 24 and now its logging just fine.
Thanks a million he was about to order a new ecu.
I have a 99 ws6 and it let's me log more just didn't realize that 98 were that much lower
Thanks a million he was about to order a new ecu.
I have a 99 ws6 and it let's me log more just didn't realize that 98 were that much lower