Blue89rs
03-30-2004, 08:11 PM
Here's one for the fricken books man.....
engine idles fine, 18* advanced, TPS=.55, MAF=30hz. Anything over 1/4 throttle and the ECM starts pulling timing. Straight down to 10* at 4000RPM with TPS=4.0V, MAF=120hz . Can you say OUCH. Plus the 02 sensor reads LEAN (0.1-0.0V) when this happens as well. The car just falls on its face when this happens. Also, block learn is at 150, timing was checked with a Snap-off reader.
Things I've replaced:
MAF
MAT
fuel pump (thanks rich)
fuel filter
coil, cap, wires, rotor, pickup coil, ignition module
timing chain
3 lifters
o2 (ac delco)
All sensors check out fine. Help? A pitcher of choice goes to the one who leads to the conviction of the problem!
-T
engine idles fine, 18* advanced, TPS=.55, MAF=30hz. Anything over 1/4 throttle and the ECM starts pulling timing. Straight down to 10* at 4000RPM with TPS=4.0V, MAF=120hz . Can you say OUCH. Plus the 02 sensor reads LEAN (0.1-0.0V) when this happens as well. The car just falls on its face when this happens. Also, block learn is at 150, timing was checked with a Snap-off reader.
Things I've replaced:
MAF
MAT
fuel pump (thanks rich)
fuel filter
coil, cap, wires, rotor, pickup coil, ignition module
timing chain
3 lifters
o2 (ac delco)
All sensors check out fine. Help? A pitcher of choice goes to the one who leads to the conviction of the problem!
-T