VirtualToaster
New Member
- Joined
- Mar 24, 2021
- Messages
- 8
- Reaction score
- 0
- Points
- 1
- Location
- Wisconsin
- Vehicle Year
- 1987
- Make / Model
- Ford Bronco II
- Engine Type
- 2.9 V6
- Engine Size
- 177 cid
- Transmission
- Manual
- 2WD / 4WD
- 4WD
- Total Lift
- 0
- Total Drop
- 0
- Tire Size
- 28"
I've been battling with this hunk of metal for the past two months (when i got it). It ran great and beautifully, before i touched the green/yellow coil wire that runs to the tfi and tach. After touching it, tach died and wouldn't move. Replaced ENTIRE ignition system (wires, pickup, tfi, you name it). Ran a new wire to TFI, motor started. Timing was off, but it ran and bucked.
Fast forward to two days ago (Wednesday), and the coil was acting up. Got a new connector (bat+ to coil was coming out) and ran better. Touched distributor, unplugged spout, set to ~500 rpm. Plugged in spout, idled at 1000 but would keep dropping, and coming back up, like something was wrong. Go to drive, and while it wouldn't buck at WOT, it also wouldn't go very fast. Almost as if the timing was retarded, or the spark was weak. Car dies, i touch some wires near the coil, it starts and I'm on my way. Then, at a stoplight, coil loses power entirely. Can't restart, no matter what i touch or do, it will not run. I ran battery power directly to the coil's power connector (forgot about my multimeter till later) and the interior lights came on. I'm not sure that's supposed to happen, but i'll keep going.
Now I don't know what the hell is going on. Tfi works (tach moves when key is first turned to START, up to about 300, then drops to 0), coil sends no spark (unhooked main wire and held a screwdriver to the post), and this is my third computer. (1st is original, probably still good, 2nd was out of an early 86, runs very rich and improperly BUT ran it great at WOT, 3rd is out of a late 86, current computer).
Frankly I have no clue what to do now. I'm going back to it tomorrow to pull codes. I know previously before i touched the timing, i got 33, 42, and 12. EGR not opening, O2 rich, and high idle. I think timing was at maybe 4-5 btdc. I lined up the crank pulley and the rotor at #1 while motor was near/at tdc (whatever the balancer mark suggests), and it ran but bucked like a bad TFI. It stopped bucking earlier (when less than 1/2 throttle) but would still buck after that.
Man. I hate early fuel injection. Can't wait until I piece my 302/351 swap together.
Fast forward to two days ago (Wednesday), and the coil was acting up. Got a new connector (bat+ to coil was coming out) and ran better. Touched distributor, unplugged spout, set to ~500 rpm. Plugged in spout, idled at 1000 but would keep dropping, and coming back up, like something was wrong. Go to drive, and while it wouldn't buck at WOT, it also wouldn't go very fast. Almost as if the timing was retarded, or the spark was weak. Car dies, i touch some wires near the coil, it starts and I'm on my way. Then, at a stoplight, coil loses power entirely. Can't restart, no matter what i touch or do, it will not run. I ran battery power directly to the coil's power connector (forgot about my multimeter till later) and the interior lights came on. I'm not sure that's supposed to happen, but i'll keep going.
Now I don't know what the hell is going on. Tfi works (tach moves when key is first turned to START, up to about 300, then drops to 0), coil sends no spark (unhooked main wire and held a screwdriver to the post), and this is my third computer. (1st is original, probably still good, 2nd was out of an early 86, runs very rich and improperly BUT ran it great at WOT, 3rd is out of a late 86, current computer).
Frankly I have no clue what to do now. I'm going back to it tomorrow to pull codes. I know previously before i touched the timing, i got 33, 42, and 12. EGR not opening, O2 rich, and high idle. I think timing was at maybe 4-5 btdc. I lined up the crank pulley and the rotor at #1 while motor was near/at tdc (whatever the balancer mark suggests), and it ran but bucked like a bad TFI. It stopped bucking earlier (when less than 1/2 throttle) but would still buck after that.
Man. I hate early fuel injection. Can't wait until I piece my 302/351 swap together.