No start 1994 Suburban

Blaine_Vaughan · March 28, 2020, 2:28pm

So I have a 1994 Chevrolet Suburban 5.7

Craziest thing is it will start and run fine only once a day after that the engine will turn over but I have no spark. Fuel is spraying in the TB. Changed coil, icm, ecm, rotary button, cap… any ideas?

COROLLAGUY1 · March 28, 2020, 2:55pm

Did you test the ignition module?https://easyautodiagnostics.com/gm/4.3L-5.0L-5.7L/distributor-mounted-icm-tests-1

Tester · March 28, 2020, 3:30pm

Since you’ve already replaced the Ignition Control Module, try replacing the distributor pickup coil.

Tester