KenHall1702
New Member
- Joined
- Apr 17, 2022
- Messages
- 19
- Reaction score
- 3
- Points
- 3
- Location
- Hun
- Vehicle Year
- 1988
- Make / Model
- Bronco II
- Transmission
- Manual
I have been doing work on my son-in-law's
1988 Ford Bronco II
VIN 1FMCU12T6JUC37354
Year 1988
Style/Body SPORT UTILITY 2-DR
Engine 2.9L V6 OHV 12V
It needed a new clutch and we got that done (clutch, pressure plate, fly wheel, pilot bearing, slave cylinder) and that all seems to work fine.
Now that it can actually try to accelerate, we have a new issue.
At about 3000 rpm, the engine will stutter momentarily.
We then replaced the TFI module (thinking heat related issue) and also fuel filter, high pressure fuel pump.
Could not replace the low pressure pump in the tank due to mechanical issues from a slight accident.
No change in behavior.
I examined distributor cap and rotor (cleaned off very minor scoring on the end of the rotor), timing was set correctly and advance was working.
No change in behavior.
Today we replaced the plugs and wires.
No change in behavior.
The only thing I can think of now would be the pickup coil inside the distributor. I am a little hesitant to start that task as it looks like taking off the intake plenum and a ton of connectors.
Is there anything else that it could be and how would I diagnose them?
Oh yes, also measured coil resistance primary and secondary and they are fine.
This idles perfectly, it just starts to hiccup between 2000 and 3000 rpm. This can be while it is sitting in the driveway (no load) or pulling up a hill (under load).
Any thoughts or suggestions are welcome and appreciated.
1988 Ford Bronco II
VIN 1FMCU12T6JUC37354
Year 1988
Style/Body SPORT UTILITY 2-DR
Engine 2.9L V6 OHV 12V
It needed a new clutch and we got that done (clutch, pressure plate, fly wheel, pilot bearing, slave cylinder) and that all seems to work fine.
Now that it can actually try to accelerate, we have a new issue.
At about 3000 rpm, the engine will stutter momentarily.
We then replaced the TFI module (thinking heat related issue) and also fuel filter, high pressure fuel pump.
Could not replace the low pressure pump in the tank due to mechanical issues from a slight accident.
No change in behavior.
I examined distributor cap and rotor (cleaned off very minor scoring on the end of the rotor), timing was set correctly and advance was working.
No change in behavior.
Today we replaced the plugs and wires.
No change in behavior.
The only thing I can think of now would be the pickup coil inside the distributor. I am a little hesitant to start that task as it looks like taking off the intake plenum and a ton of connectors.
Is there anything else that it could be and how would I diagnose them?
Oh yes, also measured coil resistance primary and secondary and they are fine.
This idles perfectly, it just starts to hiccup between 2000 and 3000 rpm. This can be while it is sitting in the driveway (no load) or pulling up a hill (under load).
Any thoughts or suggestions are welcome and appreciated.
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