You need to 1st determine if the computer is even trying to start it before you start lobbing parts. Look at the CHECK ENGINE lamp while you crank it. If it stays on bright while cranking, the engine will not get any signal to fire spark or fuel because the computer is not seeing RPM signal while cranking. If the light goes OFF while cranking, the crank signal was seen, however there could still be fuel or spark issues from other causes. You really need to determine if you have spark or fuel as the next step after verifying rpm signal. There are no cheap tricks for most of this work, it takes tools and training to determine the exact cause of failures. Does the ECM communicate? Is the EEC relay functioning, does the fuel pump prime up at Key On? Is there injector pulse? Fuel pressure? 30kv of Spark that is also reaching the plugs?
These are the steps to check to determine how to not buy a wasted part as the next step.
Electronic ignition, check the coils as well as cracked plugs and wires
distributor, check the above as well as the points and gap inside the dist.
Check batteries, cables positive and ground, check for spark at plug, check if the wires are good, check fuel pressure to see if the fuel pump is working, replace fuel filter.
202 views
Usually answered in minutes!
Do you have spark? Fuel Pressure? What made you change the module to begin with?
×