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Hey guys, hope everyone’s day is serving them well.
I have become victim to throwing money mindlessly at a problem and getting no results.Problem:
I did some upkeep on the soldering to my main relay and Rad. Fan Timer circuits.
After doing this, everything worked great for about 2 weeks. The car started to overheat.
I replaced all of my hoses involved in the heating system. I believe this was the first time this happened to this car, as most of my repairs have been.
I finally replaced the radiator fan timer with a 94 accord’s timer, I spliced all the wires correctly, and even realized the blue wire on the 94 accord should be the green wire on the 90 accord.
My car continued to overheat.
I pulled the radiator, I pulled the thermostat, I pulled the ECT sensor, I pulled the radiator fan switch on the water outlet housing and the thermostat housing. The f^*(^&( fans still won’t turn on.
All the fuses are good.
I assume the relays are good, they are the next thing I will replace. For my year accord I am only seeing 2 relays, one in the underhood fuse box, and one attached to the cooling fan.
I have googled my issue so many times, I feel like I am just catching money on fire and pissing it away…
I’m sorry if this is able to be found on the search box, (I searched 90 accord rad fan timer and got nothing).
Thanks in advance.
Oh, the fans themselves are good, I used a set of jumper cables and hooked em to the battery, each fan turns on. thanks.
- Replies
Go to the salvage yard and get the relays, they are small enough to fit in your pocket. Bleed the coolant system.
find the cooling fan switch sensor. use a small paper clip
and jumper the connector. turn the key to on without starting
the car. the fan should run. if it runs bad sensor. if not go
to relay or the fan timer.[quote=”djsylentmystyk” post=64849]Is it possible to use a 94 accord’s rad fan timer on a 90?[/quote]
That I don’t know. google both years and see if the part
number is the same.different part numbers but the damn circuit boards look exactly the same. Anyone else have any input?
Honda does not change part numbers for no reason. The circuit boards may LOOK the same but you can’t be sure that all of the components used on the board are the same. I’d start with the correct vintage and part number fan timer.
Update:
Jumping the switch on the thermostat housing causes both fans to run, however replacing that switch yields no results. What next?It was a long time ago but I had a similar problem on an older Accord that could not be found. My memory says there was a 3 relay cluster mounted near the top of radiator but off to the drivers side of the car. The car had been in a minor frontal confrontation with a wall in a parking garage. Anyway the radiator support that the relay cluster bracket was attached to was sprung and had split one of the relays open on impact then closed the split after the impact. Dumb luck and a wiring diagram helped me trace down the problem. It was a bad relay-I know long story short ending.
I have a haynes and a chiltons manual, I attempted to follow eric’s electrical basics videos, and the wiring diagram is very hard to follow in my books. any websites that you guys are aware of that may have a free diagram that is top to bottom like eric had?
[quote=”djsylentmystyk” post=65047]I have a haynes and a chiltons manual, I attempted to follow eric’s electrical basics videos, and the wiring diagram is very hard to follow in my books. any websites that you guys are aware of that may have a free diagram that is top to bottom like eric had?[/quote]
+1 karma, thanks so much dude. If anyone else needs this I’ve attached. this should be good for 90-93.
Now that everyone can see what I’m looking at, my model (with A/C) goes from the fuse # 39 to the radiator fan relay (switch side)to the radiator fan motor. Nothing else messes with that. On the control side, it goes from fuse #8 to the fan timer unit, then goes to the control side of the relay to coolant switch A to ground. Does that make sense?
So if that’s the case, and I have a new rad fan relay (although this advanced auto parts seems to have shoddy parts 60% of the time, like someone’s returned their old one in the box and they took it back) a new coolant switch (same advanced auto) and still doesn’t work. However, when I jump coolant switch A, both fans turn on no problem.
My guess here would be to swap out coolant switch A again at a more reputable parts store, then if that still doesn’t work …?Quick side note, @collegeman. Has anyone ever used the “report to moderator” button on you? That’s a funny notion. You would think they would remove that button from your posts. Lolz…
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