1990 Ford Bronco

1990 FORD BRONCO
125,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
SCOTH
  • MEMBER
  • 3 POSTS
MY BRONCO WILL COLD START AND RUN NICE, WHEN IT HEATS UP OR WHEN THE HIGH IDLE IS REDUCED THE ENGINE SUDDENLY DIES AND WON'T START. IT WILL START AFTER IT SITS FOR A MINUTE. NEW COIL/DIST.
Nov 7, 2009 at 12:56 PM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Hi scoth and TY for the donation

WHEN IT HEATS UP OR WHEN THE HIGH IDLE IS REDUCED THE ENGINE SUDDENLY DIES AND WON'T START. IT WILL START AFTER IT SITS FOR A MINUTE. Next time it dies out don't wait do below to determine if its fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it
Nov 7, 2009 at 1:56 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.