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Old 06-19-2004, 07:09 PM's Avatar is offline Moderator
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I have installed several stock MIIs and have had super results. Can't imagine how you could have bump steer if you installed the R&P in the stock location and not changed other geometry. Did you mount the strut rods with the pivot point directly in line with the pivot plane of the bottom A-arm? That is important. Has it done this from day one or just start to act up recently? If the latter, check things carefully, especially strut rod brackets that may have broken due to fatigue. Check carefully, those cracks are hard to see sometimes. Did you mount the X-member with the center of it level and with the frame at ride height? If not, that may account for the rough ride and wandering 'cause the geometry isn't correct at some positions of the travel. Also, are the lower A-arms level when the car is fully loaded and ready to run? That is the design spec. If they slope way up or way down, the suspension is operating out of range. It doesn't sound like you have bump steer per se if the wheel jerks both ways. That sounds like an alignment problem that is allowing the wheels to not track forward. True bump steer pulls the wheel one direction only when the steering rods and A-arms are moving in different arcs. Has it been professionally aligned? Check toe-in. The front of the tires should be 1/8" to 3/16" narrower than the back.
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