Fellow Scions,
After reading and contributing to the thread about TR4 horns, I
felt obligated to fix my own. The ciruit has been intermittant
since I bought Basil 8 years ago. So much so, that I wired
another switch in parallel for safety's sake. Turns out the
source of my horn problem had also been contributing to another
problem the car came with, to wit, the steering wheel would move
front-to-rear about an inch. I never correlated the steering
wheel slop with the intermittant horns, but now all is clear.
The steering column was loose at the split clamp connection to
the steering rack. After removing the column and all its bits,
the source of the slop was the bolt which is supposed to sit
firmly in the circumferential groove on the splines at the rack.
The bolt had evidently worked loose with vibration/time/etc and
decreased its diameter by 1/3. A new bolt cured both the horn
and steering column motion problems. God, I love these cars.
Imagine trying to remove the steering column from your new
(insert new car here).
Cheers,
Barry W. Fox 65 TR4A CT51681L(toot toot)
W1HFN
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