Plain Jane OEM nothing to see here rebuild

[RETed]

Originally Posted by JustJeff

1) Clutch switch on the front of the clutch pedal was dead. I replaced that and confirmed the ECU is seeing a signal from it.

When mines went bad, the engine tended to idle slightly higher than normal.

2) AC relay and A/C switch both show 12V whether A/C switch is on or off

I believe the circuit pulls to ground - the switch grounds out at the A/C compressor?
Also, I believe there's a pressure sensor switch (for safety reasons) is wired in series to the circuit...which could be the culprit?

3) Neutral switch shows no change at ECU between Neutral and in gear...but IIRC I do not have a neutral switch on my JDM transmission.

I know this affects the cold-start idle on initial cranking...

4) Oxygen sensor was way off, but that might be because my engine is running really rich??

It's supposed to be Idle-below 1V, Accel -.5-1V, Decel -0-.4V.

Mine idled at 29.6mV, I wasn't driving with DMM on, but I throttled the pedal Accel-22mV, Decel-26mV

This is odd, but it should not affect anything outside of slightly worse gas mileage...
It should see at least 0.5VDC at idle and decent acceleration.

6) Full range on the TPS is definitely off by a bit. It should read .8V at idle and mine sits at .54V. Can I get some feedback on that one? On the one hand off by .26V doesn't seem bad, BUT that is a significant amount when it's 1.4 of the total spec reading.

This might trigger one of those nasty E-OMP error codes which could trigger limp-home mode...


-Ted