Join Date: Mar 2002
Location: Austin, TX, USA
Re: '89 Camaro RS problems
The ECM will run the fuel pump for a couple of seconds after the switch is turned on to prime the system. Beyond that, the ECM needs to see pulses coming from the ingition module before the fuel pump will be turned on. If the engine isn't cranking and / or the ignition module isn't feeding pulses back to the ECM, the fuel pump won't run.
I'd focus on the cranking issue first. Are you getting 12V to the solenoid when you crank it? If not, is the ignition switch providing 12V when cranking? The answer to these two questions will narrow down the possibilities considerably. Do you have a security system that may be interrupting power to the solenoid?
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI