I noticed when leaving the store the other day, that when idling in the parking lot for a few minutes, my temp gauge started going up past halfway and I was quick to shut the engine off. It hadn't done this at any other point recently until a few days ago, but this problem did also happen in July of last year. At that time, I had the car towed to a shop, and they replaced the radiator cap, cooling fan motor, fan switch, and repaired a resistor on the fan timer module. They told me they soldered a part for the fan timer module. Coolant was also flushed and replaced.
No problems with cooling again for months until just a few days ago. After letting the engine initially cool down, I popped the hood and started the engine again, closely watching the temp gauge and waiting for the radiator fans to kick on when the engine reached operating temperature. Both fans never turned on, and eventually the temp gauge started going past halfway again before I shut it off. Unlike in last July, this time the coolant did not appear to be boiling over at all (last July it was boiling when I pulled over and gushing out of the coolant reservoir tank).
No coolant leaks, coolant level and color in reservoir tank is OK, hoses are good, no PGM-FI light, head gasket does not appear to be blown. I have the car back at the house and want to tackle this problem myself since it seems to mirror the problem from last July. I'm just looking for some direction on where I should start. I had the auto shop email me the RO from the repair done on my car last July.
Vehicle: 1987 Honda Accord LXi sedan, 190k miles, owned since 2018.
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