1986 Other Ford Models Ford Bronco II

HOPEYOUCANHELP

MEMBER
1986 FORD
6 CYL
4WD
MANUAL
19,600 MILES

I have a 1986 Ford Bronco II. Recently it started to hesitate, sputter, buck and even stall when the engine is hot and I am in stop and go traffic. When I first start the Bronco and drive it, it runs fine for a bit. On the highway it seems to run fine. Again, it's mainly after I drive it for about 15-20 minutes and the engine gets hot that it starts doing this. It's worst when I come to to a stop and then start to go.

I put dry gas in that has fuel injector cleaner. I got new plugs, wires and rotor cap replaced. A new catalytic converter. A new ignition module (TFI module). Nothing seems to fix the issue.

Any ideas?

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Hi HopeYouCanHelp, Welcome to 2carpros and TY for the donation

Inspect and test all the following listed below and get back with some testing results we start here

Oxygen sensors.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard