Losing power, loading up

[Pamela]

I have a 88 Bronco II 2.9 litre fuel injection. Between 25 and 35 mph totally looses power. When you put the accelerator to the floor it clears up and will run fine for awhile. Runs really rich. Have replaced both fuel pumps, spark plugs, map sensor. Convertor has been checked, new wires, vacumn llines been checked. Have taken it to three mechanics, no results.

 

[George Coleman]

I have a 88 Bronco II 2.9 litre fuel injection. Between 25 and 35 mph totally looses power. When you put the accelerator to the floor it clears up and will run fine for awhile. Runs really rich. Have replaced both fuel pumps, spark plugs, map sensor. Convertor has been checked, new wires, vacumn llines been checked. Have taken it to three mechanics, no results.

Do you have HEI Ign. system? It may be your electronic ign. module!!