91 Bronco no start?

I HAVE A 91 BRONCO W/A 351W MOTOR MY PROBLEM IS THAT ON WARM DAYS IT RUNS OK BUT ON COLD DAYS IT WILL NOT.IT WILL START SOMETIMES,BUT IT WILL IDLE UP AND DOWN AND WHEN YOU REV MOTOR IT WILL BACKFIRE THROUGH AIR CLEANER,I ALSO NOTICED THAT WHEN KEY TURNED ON THAT FUEL PUMP SOUNDS LIKE IT KEEPS RUNNING AND NOT PRESSURING UP (WHEN WEATHER IS WARM IT COMES ON FOR A SECOND AND SHUTS OFF)I ALSO HEARD A CLICKING NOISE IN ENGINE COMPARTMENT FOUND TWO RELAYS AND REPLACED STILL HAVE PROBLEM.CANT AFFORD A REAL MECHANIC AND NOBODY I TALK TO SEEMS TO KNOW WHAT IM TALKING ABOUT.IS THIS A BAD PUMP?? OR SOMETHING ELSE?? ANY INFO WOULD BE GREATLY APPRECIATED. THANK YOU D.TERRY

Does anyone know anything I can do...

Answers: Your description of the rolling idle and backfire out the intake suggests the engine is running lean and fuel starved. It would probably even out temporarily if you sprayed starting fluid surrounded by the engine air intake, but wear sanctuary glasses to dodge those back fires. Then since you vote the fuel pressure acts up contained by cold weather, assuming your fuel filter is good, let's guess you may have need of a new fuel pump contained by your gas tank if it's never be replaced. I'd replace it for sure in that covering, along with the fuel filter.

Which cold nouns intake is better? airaid...

Bob have it right!
Sure sounds like a fuel filter or pump.

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