dropped94formula

ok i have a 94 formula that i just got done installing a new motor, stock heads stroked and 305 cam, USED opti. its throwing these 2 codes

16 A low resolution pulse was not detected by ECM within 720 high resolution timing pulses.

36 ECM detected less than 40 high resolution timing pulses between each low resolution pulse for 5 consecutive cycles.

any ideas? thanks for the help, much needed

p.s. it also will idle down to 500 rpm and die a bit after, its also hard to start.

dropped94formula

ttt also wouldnt start for a while, then disconnected the coil wire (4 prong above the intake) and started right up, anyone????

dropped94formula

ttt anyone???

Dean95z28

iTrader: (7)

Not exactly sure but maybe you should check your knock sensor, and if you haven't already change the lt1 to a lt4 knock module in the computer

jldak318

iTrader: (3)

ignition controll module, try that first. if the car runs great until it heats up and is throwing them codes its prob the icm.

dropped94formula

thanks ill try those two out. any other ideas?

Bad Dad

iTrader: (2)

Check your opti wire harness connections.