Intermittent cutout/studder right off idle.

[Dickinson County Comanche]

I got 0 ohms on both sides of the plug (truck plug & sensor plug)

[Ωhm]

I misled you. Check at the sensor. Didn't realize drawing was for vehicle harness side.

[Dickinson County Comanche]

8 minutes ago, Ωhm said:

I misled you. Check at the sensor. Didn't realize drawing was for vehicle harness side.

Both sensor and truck were 0 ohms. So sensor is defective but is that ohms for the truck normal or do I also have a fault there?

[Ωhm]

Truck side.

"A" would have battery voltage with KEY ON.

"B" will go to ground.

[Dickinson County Comanche]

14 minutes ago, Ωhm said:

Truck side.

"A" would have battery voltage with KEY ON.

"B" will go to ground.

I have voltage on both A & B, C is ground.

[Ωhm]

Interesting. I'm using the 88 Electrical Manual. Maybe things changed. Odd.

[Dickinson County Comanche]

87-90 share the same part number for the sensor

[Ωhm]

Schematic callout may be wrong. Not the first time I've seen this.

[Dickinson County Comanche]

45 minutes ago, Ωhm said:

Schematic callout may be wrong. Not the first time I've seen this.

I’m getting a nice multimeter to check for certain. I also have a 1989 electrical book so I’ll check in it as well

[Ωhm]

8 minutes ago, Dickinson County Comanche said:

I’m getting a nice multimeter to check for certain. I also have a 1989 electrical book so I’ll check in it as well

 

Thanks for this follow up.

[Dickinson County Comanche]

50 minutes ago, Ωhm said:

 

Thanks for this follow up.

So I looked in my book and it shows the same thing. I couldn’t get the multimeter I bought to work (genius who designed it made the probes about 1/16” long so they’re impossible to get any sort of accurate measurement from a plug) so I’m just going to look at replacing the coolant sensor, intake manifold gasket (pretty sure it’s leaking) and the O2 sensor and check back. 
 

On the way back home, it acted up really bad again. Would immediately die when given any throttle from idle and it would only start when at WOT and it would studder for a split second after running. Then 30s later it was almost back to normal. I’m so confused.