87RangerXLTct
Member
- Joined
- Aug 20, 2009
- Messages
- 99
- Reaction score
- 5
- Points
- 8
- Vehicle Year
- 1987
- Make / Model
- Ford
- Transmission
- Manual
My 87 Ranger died on me last week, was driving down the road and it just cut out. Pulled over and tried to start it again, it started after a couple minutes then when I put it in gear and let off the clutch it died again. Got it towed home, checked for spark and it has none but it's getting fuel.
Primary and secondary resistance are within spec for the coil. That lead me to the TFI module. Checked voltage at pin 3 koeo 11.6V, pin 4 was only .13 volts. My battery voltage was 12.4. So I think I either have a short somewhere or maybe a bad ignition switch? My negative battery cable is corroded where it bolts to frame and wire is bare. Was having trouble starting the truck in the rain or after it rained, it would eventually start but took a few minutes. Also was having driveablity issues with a hesitation/misfire underload or going uphill mostly at highway speeds, think thats unrelated but may have something to do with bad ground (neg batt cable).
I'm going to replace negative battery cable and see if I cant find a short in the tfi harness. Is there a way to test the ignition switch?
Any other ideas of why no spark?Thanks in advance
Primary and secondary resistance are within spec for the coil. That lead me to the TFI module. Checked voltage at pin 3 koeo 11.6V, pin 4 was only .13 volts. My battery voltage was 12.4. So I think I either have a short somewhere or maybe a bad ignition switch? My negative battery cable is corroded where it bolts to frame and wire is bare. Was having trouble starting the truck in the rain or after it rained, it would eventually start but took a few minutes. Also was having driveablity issues with a hesitation/misfire underload or going uphill mostly at highway speeds, think thats unrelated but may have something to do with bad ground (neg batt cable).
I'm going to replace negative battery cable and see if I cant find a short in the tfi harness. Is there a way to test the ignition switch?
Any other ideas of why no spark?Thanks in advance