A healthy motor will kick on the fans when the needle hits past the midpoint on the gauge. It shouldn't stay on more than about 1-2 minutes after parked, even on a really hot day.
My guess is your switch is bad. They're cheap insurance.
As for the "after-run": the red power lead on the switch wiring is hot all the time. It will kick on whenever the contacts in the switch are activated (through heat). There is no separate circuit for it, until you get to late 1988 on MK2 cars. They use a sensor on the head to activate the after-run.
I'd replace the switch with a good Whaler unit rated to 87C-90C. Then I'd check the bearings on the fan. If it was running constantly, the bearings may be worn. Finally, I'd run the relay setup.
Could your high temps and after run have ANYTHING with the way you drive it? These Portland Peoples knock me out with their stop and go. I truly believe they have no concept of slow and steady wins the race.
I think its because I go from a twenty five minute interstate run, right into a downtown, light every 200 feet for seven blocks before I get to my parking lot. I definitely dont go max throttle between the lights, more like try to time my speed to catch em all green. Oh that and the temperature sits around Hades degrees Fahrenheit by 9am.
Could your high temps and after run have ANYTHING with the way you drive it? These Portland Peoples knock me out with their stop and go. I truly believe they have no concept of slow and steady wins the race.
portland drivers are some of THE WORST DRIVERS I HAVE EVER SEEN.. its the only place ive driven, where there can be 4 lanes of traffic, and they are ALL STOPPED, and its just because some idiot is pulled off the road changing a tire or getting a ticket! really people? theres no need to stop. oregon law says to slow 5 mph, and give them some room. same goes for an emergency vehicle. whoever got it in their head that you need to stop every time you see flashing lights and a siren, needs to be slapped. cops actually prefer it when you DONT stop. cause then they dont need to slow down so you can get out of their way.
literally, ive driven the length of I-5 many times. california drivers are not as bad as people say they are. the freeway never stops down there. it may slow to a crawl, but portland, you may be in the same spot for 20 minutes or more in a traffic jam..
portland drivers are terrible!!!
Portland drivers are terrible!!
Hey wait a minute! I am a Portland driver, at least on Sunday night and Thursday afternoon. But you are right, stopping for no real reason is pretty common. I have learned my route well enough that I know which lanes are more prone to stopping than others and I stay out of them. Seems like the merge in and out ones are the worst. Tough to move across all four lanes to avoid those places where traffic is added from the left then from the right. Who designed that one? Kind of glad I am a small car in those places as I can slip between others and make the lanes.