[fst100]

was on the freeway and got on the throttle and noticed i was getting knock retard as well as my WB showing anywhere from 11.6-12.x at part throttle whereas i usually get 10.5-11.x with alcohol. the controller lit up fine as i have the turn on at ~3psi and the max psi at ~10. i thought there was a thread on how to test the pump if it'll spray with motor off if u cross the wires of fthe controller. of course i'll remove the hose from the injector nozzle b4 i do the test my pump is an older shurflo pump which were the 100psi. thanks in advance!!!

[dvldoc]

Disconnect the map sensor plug, remove hose from nozzle connect the grey wire to the green wire to test pump.

[fst100]

thanks bilal. i actually found the thread and unplugged the wires off the controller then took the red/postive from the pump and made contact with the postive off the fuse box-with the hose taken off from the injector and it actually spurted washer fluid. i dunno what happened b4-hand?

[fst100]

odd, on the highway today i got on the throttle and noticed i on the wb my AFR went from the norm 10.5 then went up to 11.5-12.0 and my LS1M showed i was getting knock like 5-8* >.<
i retested to see if the pump was going bad, but after testing it like i stated above, the pump's fine. the controller seems to be functioning fine as well as i did not see if of the controller's fault light come on. this leads me to believe a bad/loose wiring somewhere. i ruled out ground since i when i got on it earlier, the controller was lighting up on green and sometimes yellow since i have the controller set at near full spray/pump. could it be a bad 12v or MAP wire? i checked the connection from the 12v pump wire and i've been using quick disconnects. the only one i did not use quick-disconnect is the green from the controller to the MAP sensor-thats been soldered instead. any ideas?