I've been reading through some of the other threads regarding low power issues. I've done some work on my Bronco, but I still haven't solved the problem.
First off, I'm driving a 1990 EB, 5.0 liter V8
Here is some of the work that's been done over the past few months:
-New plugs, wires, dist. cap
-New ground terminal and cable (though, a pretty cheap one...)
-New fuel pump and sending unit
-New fuel filter
-New fuel pressure regulator
-Installed K&N air filter
-Cleaned throttle body (and saw how gunky the intake manifold was as well! another problem for another day?)
Cleaning the throttle body and replacing the Fuel Pressure Regulator certainly helped. Before cleaning the TB, I was idling really poorly. That is no longer an issue.
Here's the problem: low power. The engine is revving up and moving the truck at 1st gear just fine. Once I start reaching higher speeds, performance is really poor. I took it for a trip recently and struggled on the freeway. I'd hang on to 55 to 60 mph (and it'd take forever to get there!), but any time there was an increase in the grade, my speeds would drop. I could barely keep a steady 45 mph going up through the mountain pass to Tahoe. It was almost embarrassing trying to drive the thing on the highway!
I understand that the Bronco isn't meant for freeway driving, but I feel that such a large engine should at least be able to charge up a hill better than mom's minivan.
Also, new issue since I've changed out the fuel pump and fuel filter: The smell of gasoline is present in the cab when driving at higher rpms. At least, I would notice it when driving at higher speeds.
What could it be? Probably poor fuel/air mixture? What more can I do? I put a bottle of fuel injector cleaner in the tank today before filling up. I'll try that a few more times and see what happens. Maybe I'll go as far as replacing the injectors entirely? Could there be a problem in the exhaust? How would I know?
I hope all the details have been helpful. Thanks for any tips and advice!
First off, I'm driving a 1990 EB, 5.0 liter V8
Here is some of the work that's been done over the past few months:
-New plugs, wires, dist. cap
-New ground terminal and cable (though, a pretty cheap one...)
-New fuel pump and sending unit
-New fuel filter
-New fuel pressure regulator
-Installed K&N air filter
-Cleaned throttle body (and saw how gunky the intake manifold was as well! another problem for another day?)
Cleaning the throttle body and replacing the Fuel Pressure Regulator certainly helped. Before cleaning the TB, I was idling really poorly. That is no longer an issue.
Here's the problem: low power. The engine is revving up and moving the truck at 1st gear just fine. Once I start reaching higher speeds, performance is really poor. I took it for a trip recently and struggled on the freeway. I'd hang on to 55 to 60 mph (and it'd take forever to get there!), but any time there was an increase in the grade, my speeds would drop. I could barely keep a steady 45 mph going up through the mountain pass to Tahoe. It was almost embarrassing trying to drive the thing on the highway!
I understand that the Bronco isn't meant for freeway driving, but I feel that such a large engine should at least be able to charge up a hill better than mom's minivan.
Also, new issue since I've changed out the fuel pump and fuel filter: The smell of gasoline is present in the cab when driving at higher rpms. At least, I would notice it when driving at higher speeds.
What could it be? Probably poor fuel/air mixture? What more can I do? I put a bottle of fuel injector cleaner in the tank today before filling up. I'll try that a few more times and see what happens. Maybe I'll go as far as replacing the injectors entirely? Could there be a problem in the exhaust? How would I know?
I hope all the details have been helpful. Thanks for any tips and advice!
