The EGR won't cause it to go into limp home mode. It might turn the check engine light on if your on the highway, I'm reasonably sure that it uses the O2 sensor to look for a change in the exhaust O2 content after it opens the EGR valve.
Use the fuel pump enable connector to pressurize the fuel system before trying to start it. Cold motor + fuel leak == low risk of fire. Also I suggest you leave the set timing connector unplugged so it starts on base timing. This separates the ign/fuel system so if you have any issues it'll be fuel only. The distributor module will fire the coil OK. The ecm only needs the dist. reference low&high signal and coolant sensor during cranking. The rest is don't care until it get into run mode.
One good thing with TBI is you can see if the injectors are spraying fuel.
Once it fired the first time even for 30 seconds or so you can plug the set timing connector together after you check your base timing. Usually somewhere around 5-10 BTDC works.
Last edited by efi-diy; 03/23/0911:49 PM.
51 GMC 4.2 turbo Can't solved today's problems using the same technology/thinking that created them
