Certain models may have a vibration issue at highway speeds that could be due to uneven tire pressures, tire rim out of specs, wheels out of balance, AC compressor bracket bolts not torqued correctly, misalignment of the steering shaft coupler, improper ride height, or wheel alignment out of adjustment. A qualified technician is needed to sort out these problems and correct them.Google+
Car Problem Reports
Isuzu Rodeo Vibration at Highway Speed Due to Various Issues
Isuzu Rodeo Problem
Average Mileage: 142,750 mi (101,000 mi - 201,000 mi)
Visitor, 2000 Isuzu Rodeo, 145,000 mi
Starting at 65 mph notice vibration in front end. The vibration get very serious about 70mph.
This is a dangerous situation.
I'm thinking it may be a bent front axle shaft. Under 60mph car rides fine.
Tires balanced, 4 wheel alignment, tires balanced. Doesn't matter, still severe vibration above 65 mph.
2000 Isuzu Rodeo LS v6 automatic trans 4x4.
Visitor, 2001 Isuzu Rodeo, 124,000 mi
Severe vibration of the front end at anything over 60MPH at 70+ MPH it is so intense that is obviously unsafe condition.
Visitor, 2000 Isuzu Rodeo, 101,000 mi
Vibration at highway speeds - have not had it repaired yet.