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Here is the list:
Removing it means getting rid of the electronic throttle body, and replacing
it with the appropriate standard unit (like from a 1991 9kT). Then you have
to make that work by swapping in a standard throttle pedal and throttle
cable.
Then you'll notice that the LH box (1992) or Trionic box (1993-1995) is
incapable of reading it's own throttle position signal (TPS) and it lacks
the ability to run an idle control valve (IAC). So you need to retrofit a
TPS unit, an IAC valve, and the appropriate non-ETS engine control box (1991
LH box for 1992 cars, compatible-year Trionic box for 1993-1995 cars). The
IAC and TPS wiring is missing from the ETS engine wiring harness, so the
relevant wires/connectors must be added.
Now the car should run normally, except the A/C will not work. This is
because the ETS box (under the driver's seat) is part of the compressor
turn-on circuit. Several wiring harness mods are necessary to convert an
ETS car to non-ETS A/C activation. An alternative/temporary hack is to
jumper two terminals in the (now defunct) ETS box harness connector.
If your car is a 5-speed, the "TCS CTRL" light will be permanently
illuminated whenever you drive the car. This is triggered by the brake
(TC/ABS) controller's inability to communicate with the ETS box.
Fortunately, the ABS part of TC/ABS will continue to function without
problems. If it bothers you, you can either remove the "TCS CTRL" dash
bulb, or swap in a 1992 9k non-turbo ABS controller. This is the only
direct-fit ABS-only controller that will work in 5-speed ETS-TCS cars.
The final issue is that your car will now not have cruise control, since
this function was incorporated into the ETS box. If you want cruise, you'll
have to retrofit a complete system from a 1986-1994 non-ETS 9k car. This
includes all the mechanical/vacuum pieces (except the pedal switches whic
are already present), as well as all the electrical wiring. I located the
cruise box in the space that used to contain the ETS box (under the driver's
seat) and used some of the old ETS wiring to get connections through to the
pedal area, the engine compartment (aquarium), and the fuse/relay panel, and
because the ETS harness already has a road speed signal wire in it. Before
you can install the vacuum servo (that pulls the gas pedal chain), the ETS
pedal potentiometer mounting peg (steel rod) must be cut off. There was
just enough room down there to (carefully!) squeeze in my cheap electric
angle-grinder with a 4" cutoff wheel in for this task.
posted by 66.192.125...
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