shutter ford explore

i have a 95 explorer 4wd that is driving me crazy. between 25- 35 km ther is ahutter in the beast that after this speed almost disappears but is there a bit. i have no codes, pulled the pan and changed filter and fluid [fairly clean and no filings].i have had the front end aligned and wheels balanced whivh made no difference. it seems like the problem is with the engine but at the problem spped i can feel it in the steering wheel so right now i am at aloss. fuel pressure is correct

i should also mention that i have replaced both front bearings.

Sounds like the shudder could be a misfire under load. When's the last time a tune up was performed? Also, an intermittant MAF sensor could cause symptoms similar to a misfire. You should also check your TPS sensor to determine if it has a bad spot in its range of motion.

-Rod