PlatonicSolid
OBS Enthusiast
Pics of Auxiliary Cooling Fan Switch and Water Temp Switch came out too dark, but Schurkey is correct = The Fan Switch is above plug 6 and Water Temp Switch above plug 3. I haven't done a deep dive into the manual to figure out what a coolant temperature switch does vs a coolant temperature sensor.
So I now own 3 TPS. The original measuring 0.90V, the one that came with the new TBI measuring 0.77V, and the adjustable. Yesterday I put the original back in to boost the idle so the truck doesn't stall. It's not a smooth idle, so this is just a band-aid.
Today I'm replacing the valve cover gaskets. The oil leak above plug 7 is pretty bad. I've only idled the engine for 5 minutes since replacing the plugs and cables and cable 7 already has oil on it.
My prior belief that the left exhaust flange is leaking may be completely wrong. I now think the smoke coming from the flange is actually oil hitting the flange. The smoking penetrating oil sprayed on the flange bolts probably isn't helping this diagnosis either.
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So I now own 3 TPS. The original measuring 0.90V, the one that came with the new TBI measuring 0.77V, and the adjustable. Yesterday I put the original back in to boost the idle so the truck doesn't stall. It's not a smooth idle, so this is just a band-aid.
Today I'm replacing the valve cover gaskets. The oil leak above plug 7 is pretty bad. I've only idled the engine for 5 minutes since replacing the plugs and cables and cable 7 already has oil on it.
My prior belief that the left exhaust flange is leaking may be completely wrong. I now think the smoke coming from the flange is actually oil hitting the flange. The smoking penetrating oil sprayed on the flange bolts probably isn't helping this diagnosis either.