Join Date: Apr 2006
red 92 is offline
Re: no injector pulse
yes the icm does fire the injectors. which is why it will fire with fuel dumped in the tbi. the ecm is an adjuster for the proper running of the engine, taking in all input from the sensors. i didn,t read if you replaced the fuel pump relay or not. but for 50 bucks replacing both is a safe way to go. i tried an old icm that i had when my last one was slowly going south. and it for some reason didn't work now, even though it did before.
get a chiltons manual, good book to have, good wire diagrams.
92 blazer 4x4, edelbrock cam, injector spacer, powerdyne tbi spacer, moded tbi, moded stock intake manifold, moded stock air cleaner w/custom spacer, L35 heads-3angle, w/ 1.6 exh valves-and pocket ported, 2.5 cat back, and i do my own tuning, a/c delete for now, no more front axle, learned to change ALL my lubes!
Last edited by red 92; 07-15-2009 at 02:44 PM.