SOURCE: 1991 pontiac 2.5 tech 4 fuel pump relay wont energize
Look for a bad fuse or relay. If both check out, most likely an ECM problem
SOURCE: My 1986 chevy astro van has new fuel pump, fuel
replace carbutator and get it profesional tunned
SOURCE: my jimmy will not start. I replace the fuel pump
Check or replace your ICM (ignition control module) The ICM or the Ignition Control Module, is the brains behind the spark plugs. The ICM tells the spark plugs when to fire and lets the engine know when gas needs to be injected for proper engine ignition. Sometimes if your ICM is out or going bad, you may be able to start your motor up nicely once and then when you turn it off it may not start back up. It can also make you feel like your engine shake and "sputter" bad.
Start with the ICM and thank you for using Fixya, good luck
SOURCE: 1993 chevy k1500 blazer
start with cleaning the injectors, check your secondary fuel filter, and vaccum lines
SOURCE: i am trying to get a 1990 mazda b2600i running but
wrong vacuum line hooked to fuel regulator
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