Question about 1991 Pontiac Grand Am

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Fuel Injector Wont Spray

Checked Fuel Pump and filter both fine, checked plugs for spark,engine fires when fuel spills into the tbi intake, but the injector wont spray, checked fuses in box all look good. I bought a new injector and swapped it out but it did nothing. I don't have a noid light to check injector connector but i do have a digimultimeter just unaware of what settings to use... Heard of an ignition module?? could this be a potential cause, or other fuses or fuse wires?

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  • keith tucker
    keith tucker Apr 21, 2009

    i have a 1991 chevy caprice and my injectors will not spay. i have change the ignition module fuse in the car to the right the injectors it self the body that holds the injectors the fuel pump and the relay, the fuse to the pump and the thing is gas gets up to the injector thay just wont spray and i just put a new 1991 caprice ecm so daning whats up

  • Anonymous Mar 29, 2014

    Got power to the injector plug is good unplug one or two injectors and no change in engine

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Check wires at throttle body. can use a 12 volt test light to check for current. if you have spark it is not the ign module. set meter for 12-20volts. should have 2 fuse boxes on this model, one behind right side of dash at floorboard

Posted on Nov 30, 2008

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