Ωhm

If its a RED wire its used for the underhood lamp, if equipped.

I would think orientation on the INJ would be keyed somehow so it only goes in one way. My only question would be connecting the connector two different ways would change the current flow through the INJ coil windings (magnetic field). But if this was the case, I would think, the INJ would be keyed. During CLOSED LOOP in a perfect world, Fuel Trim, both ST and LT, would be 128. Your ST 160_180 (more fuel) is well within the ECUs range of authority and is adding a little time to the INJ PW time. This additional time will keep A/F ratio at 14.7_1. Hope it stays that way.

Like you mentioned earlier, injector. Also, a plugged fuel return line can cause higher fuel pressure.

With ST driving straight to 0, ECU is taking fuel away (less INJ PW time). Faulty injector (leaky or poor spray pattern), raw fuel from somewhere or higher than normal fuel pressure.

You say your running RICH. Make sure no fuel is bleeding out the Fuel Pressure Regulator (FPR) vent when engine is RUNNING.

Sadly, to say NO help here. Those are OPEN LOOP values. Kinda means it major (air leaks, raw fuel). You say REM showed RICH trying to hold CLOSE LOOP (CL). Can you read Fuel Trim (ST) when ECU is in CL. Are numbers going up or going down from 128.

What are your Fuel Trim values? ST? LT? Maybe these numbers can help here.

Just a small observation on my part. I’m vaccinated w/booster and I have friends choosing to remain unvaccinated. Now their dead. Not all of them, yet. What I’m being told is they died of pneumonia not COVID. I guess that’s it. I’m not going to argue with their loved ones.

The horrible thing is what disinformation is doing to the people.

What I wonder is why should your medical insurance have to pay for a COVID stay in the hospital or have your work insurance give you paid time off, when COVID shots are free?

Spent 14 years there. 1975-89. Good years for me.

I think if you have HI speed on the Blower Motor (BM), you have no need for that connector (C336_S). Might need a parts man here. Is there early 5_pin blower resistor (86/87) and a later 4_pin blower resistor? 87 Electrical Manual shows both.

That fuel bowl is vented to atmosphere. You'll know it when the needle valve sticks OPEN. Wet gasket could mean float is set too high. I think it your choke and all the choke linkage between the bi-metal spring and the choke plate. That choke cam needs to be free swinging.

Couple of could be's. Leaky Fuel Pressure Regulator (FPR). Check for fuel in vacuum line. Slow leak. O2S Heater circuit. O2S is a maintenance item. Replace ≈87.5kmiles.

When you come across this switch, can you put it on the bench and connect an ohmmeter across the terminals. Let me know if it's OPEN or CLOSED circuit? TIA

That photo missing the back half, I can see how the servo vacuum dump valve works now.

@eaglescout526 @cruiser54 Thanks for the effort. Let me know if you find it.

Stay safe, get well. There ain't no switch that is that important.

If you find it, can you 'pin it out' or is it just 'for sale'?

Yeah. That's the one (SL186) everyone is using, I'm looking for the Factory switch, that's the one I need to pin out.

Well, that make me believe the electrical schematic is wrong. Need to get a Cruise/Trans Sw. for final prove out. Thanks for the follow up.

No. What's that all about? So, Electrical Schematic is wrong. Claims circuit is CLOSED (path to ground) when pedal is depressed.