Dickinson County Comanche Posted October 15, 2024 Author Share Posted October 15, 2024 I got 0 ohms on both sides of the plug (truck plug & sensor plug) Link to comment Share on other sites More sharing options...
Ωhm Posted October 15, 2024 Share Posted October 15, 2024 I misled you. Check at the sensor. Didn't realize drawing was for vehicle harness side. Link to comment Share on other sites More sharing options...
Dickinson County Comanche Posted October 15, 2024 Author Share Posted October 15, 2024 On 10/15/2024 at 11:08 PM, Ωhm said: I misled you. Check at the sensor. Didn't realize drawing was for vehicle harness side. Expand 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? Link to comment Share on other sites More sharing options...
Ωhm Posted October 15, 2024 Share Posted October 15, 2024 Truck side. "A" would have battery voltage with KEY ON. "B" will go to ground. Link to comment Share on other sites More sharing options...
Dickinson County Comanche Posted October 15, 2024 Author Share Posted October 15, 2024 On 10/15/2024 at 11:24 PM, Ωhm said: Truck side. "A" would have battery voltage with KEY ON. "B" will go to ground. Expand I have voltage on both A & B, C is ground. Link to comment Share on other sites More sharing options...
Ωhm Posted October 15, 2024 Share Posted October 15, 2024 Interesting. I'm using the 88 Electrical Manual. Maybe things changed. Odd. Link to comment Share on other sites More sharing options...
Dickinson County Comanche Posted October 15, 2024 Author Share Posted October 15, 2024 87-90 share the same part number for the sensor Link to comment Share on other sites More sharing options...
Ωhm Posted October 16, 2024 Share Posted October 16, 2024 Schematic callout may be wrong. Not the first time I've seen this. Link to comment Share on other sites More sharing options...
Dickinson County Comanche Posted October 16, 2024 Author Share Posted October 16, 2024 On 10/16/2024 at 12:03 AM, Ωhm said: Schematic callout may be wrong. Not the first time I've seen this. Expand 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 Link to comment Share on other sites More sharing options...
Ωhm Posted October 16, 2024 Share Posted October 16, 2024 On 10/16/2024 at 12:49 AM, 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 Expand Thanks for this follow up. Link to comment Share on other sites More sharing options...
Dickinson County Comanche Posted October 16, 2024 Author Share Posted October 16, 2024 On 10/16/2024 at 12:58 AM, Ωhm said: Thanks for this follow up. Expand 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. Link to comment Share on other sites More sharing options...
Dickinson County Comanche Posted November 2, 2024 Author Share Posted November 2, 2024 Solved: after installing a new O2 and coolant sensor, it has seemingly vanished. Running better than before now as it also solved my idle circuit problems. IMG_0676.MOV Link to comment Share on other sites More sharing options...
Ωhm Posted November 2, 2024 Share Posted November 2, 2024 Link to comment Share on other sites More sharing options...
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