Long story short. 1991 80 series, 3fe 196'000 miles. Winch bumper, sean rear swing out carrier, rear drawer system, rack, 3" lift. Stock gears.
Tuned it up 2 years ago. New plugs, wire, filter.
Several months ago it wouldnt pass smog. After two fails I bought a refurbished EGR and it barely passed. Guy said to replace O2 sensors and theyve been replaced.
So driving on highway no matter what gear, somewhere at about 3200 RPMs the engine loses power and has no umpf. At about 3900-4k rpms.the power picks up again. I noticed that in first when I floor it, the engine winds fine up to 3200 and then loses power but still climbs..but if I let off the pedal to like 75% the power comes back. So it seems that I lose power in that rpm range only at full throttle.
I have cleaned the afm and have no apparent vacuum leaks. I have also just ran fuel injector cleaner.
Any thoughts on something im missing? The Cats dont rattle so theyre not broken. Ive done several searches.but dont find any similar exact symptoms.
Tuned it up 2 years ago. New plugs, wire, filter.
Several months ago it wouldnt pass smog. After two fails I bought a refurbished EGR and it barely passed. Guy said to replace O2 sensors and theyve been replaced.
So driving on highway no matter what gear, somewhere at about 3200 RPMs the engine loses power and has no umpf. At about 3900-4k rpms.the power picks up again. I noticed that in first when I floor it, the engine winds fine up to 3200 and then loses power but still climbs..but if I let off the pedal to like 75% the power comes back. So it seems that I lose power in that rpm range only at full throttle.
I have cleaned the afm and have no apparent vacuum leaks. I have also just ran fuel injector cleaner.
Any thoughts on something im missing? The Cats dont rattle so theyre not broken. Ive done several searches.but dont find any similar exact symptoms.