This txt. file is for using using 88-early 90's prelude
tps. Have to find in wrecking yard. I haven't been able to find it
separate of the throttle-body. Dealer service depts, might dig one up,
as a last resort. Just tell them what you're trying to do. That's real
spendy, from Honda !!! Around 500.00!
Cut the ears off the orig auto tps. Find a .070 x 33-34 mm
I.D. "o" ring. Cat dealer, or o ring house should have those. Maybe, a
hydraulic supply. Find a flat spade female wire end. I used red. Pull
off the insulation on wire side of wire end. Flatten that end,
perpendicular with the rest of it. Pry open the 2 spring sides, so the
wire end will fit on the straight drive lug, in cavity of throttle
body. (the one of 2 that drives TPS). Push it on that straight lug, and
use that to drive tps. See picture.
Take a good sharp chisel, and plink off the 2 rings
around break-off bolts. Then use edge of chisel, and dig into edge of
bolt head, and spin them out. Not too hard to do, with the throttle
body mounted on engine. Insert the TPS carefully into LTD throttle
body, and DO NOT turn to the right (clock-wise). It'll upset the lug.
Turn only counter-clockwise, to set the initial voltage. Then use a
couple of 6mm metric bolts,with small heads, and a couple washers, to
crab (clamp) the tps.
Cut off the orig tps plug, with 6" of lead left on
plug. Hook the yellow/w to the Red/white of LTD plug. The green/w to
green/blue of LTD plug. And, the red/w to light green (output) of LTD
plug. To set the voltage, insert something .110 thick (2.9 mm) at the
factory stop screw on the left throttle body. You may have to back out
the idle screw. (A small nut, maybe. I made a gauge.) on the (end
opposite the tps. Then, with key on, set the output to .475 - .495
volt, checking on Light green wire of plug. I'm assuming you have 5.0
volts on the red/w wire of plug. The round body, where the wires come
out, will be pretty close to the one mounting bolt. Button up, and test
drive.
BTW. I've seen quite a number of those "Setting
screws" "tinkered" out of adjustment. To check that, pull link off the
center idler, or pull at L.H. throttle body. This will allow throttle
on left to close fully. At that point, the gap on that setting bolt,
should be .046 thou. Adjust, if necessary. Now, you can put .110 the
gauge in, and set voltage. I have a #8 nut that is exactly .110 thick.
Works great. Try not to use a stack of feeler gauges. Always ends up
thicker than the accumulated value of the stack. File a piece of 1/8
keystock, if nothing else.