2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

what's wrong???

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Old Mar 11, 2004 | 07:09 AM
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CHRISRX7F's Avatar
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From: GREECE
what's wrong???

First mistake was that i connect a jumber wire to the terminals of the check connector(green),when the engine was on...Now the checker lambs no illuminate.(I CHECK THE CHECKER).Iturn the adjusting screw left-right but nothing.The color of the kabels of the check connector is green with red line and blu/yellow line.I think going to relief solenoid valve and switching sol. valve.Maybe affected this or some more like control unit or some relay???WHO can help me?? Variable resistor is O.K throttle sensor is O.K Idle speed is O.K!!!!!!
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Old Mar 11, 2004 | 07:11 AM
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From: GREECE
I forget to say the car is s4 rx7 fc non turbo no catalit.
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Old Mar 11, 2004 | 07:44 AM
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From: Orange Park FL (near Jax)
As a TPS wears out it can work but give inconsistant values to the ECU.
Warm up the motor, or pull off the fast idle cam.
Unplug the TPS and clip on a needle type ohmeter.
It should show a smooth sweep from 1K to 5K as you open & close the throttle.
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Old Mar 11, 2004 | 09:56 AM
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From: GREECE
O.K THE OHMETER IS BETWEEN 2K.But when i put the the checker with the 2 lambs in the green conect no one iluminate.
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Old Mar 11, 2004 | 10:08 AM
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From: Orange Park FL (near Jax)
Maybe try this: TPS check (while driving)
This works best with a loud exhaust. Find a flat open road with no traffic.
Cruise along at about 3K rpm is 3rd or 4th. Lift off the throttle.
This should give a fuel cut on both rotors as you back down.
The motor is just pumping air.
Very gently pick up just the slightest throttle.
With practice you can hear the rough sound of only #1 rotor getting fuel, while #2 pumps air.
Then adding just a little more throttle, #2 comes on.
You can also do this as you slow down in gear and the throttle is very near, but not quite at idle.
As you lift the throttle you can hear the #2 fuel cut before #1.
When you get down to near 1500rpm fuel comes back on to prevent stalling, so this works best around 2500 rpm.

If you can hear the rough sound of fuel cut on #2 only near closed throttle, the TPS is set perfect.

Last edited by SureShot; Mar 11, 2004 at 10:11 AM.
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