Just completed changing out the fluid to 15K on my black hub. I didnt bother adjusting it. Pretty simple process.
Blue fan clutch mod...Thread has gone to hell, read at your own risk (2 Viewers)
- Thread starter landtank
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Well after a few miles of driving i can deduce that changing the oil made zero difference. Within a degree or 2 at highway speeds and still creeping up when idling. More troubleshooting required....
NLXTACY
Wits' End
Well after a few miles of driving i can deduce that changing the oil made zero difference. Within a degree or 2 at highway speeds and still creeping up when idling. More troubleshooting required....
What's the temp? You said you didn't change the temperature gate so it's not going to engage til around 135/140 on the spring. Did you hear a big roar of the fan on startup?
I just did about 30 miles and temp was 187 and it crept up to 192 when idling. It's not the warmest of days here - miss 70s
No roar on startup. There was before. Just checked it and I can move the fan fairly easily at the moment even though it should be hot. Is it possible for the hub to break?
No roar on startup. There was before. Just checked it and I can move the fan fairly easily at the moment even though it should be hot. Is it possible for the hub to break?
NLXTACY
Wits' End
Did you remove old silicone fluid by letting it drain overnight? How much did you replace? What weight?
Drained it for a few hours. Plenty came out. Filled it with this stuff. At least 3/4 of the bottle went in. Maybe a little more.
NLXTACY
Wits' End
Not enough time to drain unless you heated it up. Not enough fluid to refill in my experience.
How much fluid should it take? I have the stock black asin hub.
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Those numbers are at the low end of normal, the thermostat isn't even fully open, fan isn't needed, so shouldn't be engaged. About 45ml works well in Aisin clutches.
Thanks Tools. So would you recommend to leave it and see how it performs in a day or so when the ambient is back over 90f? By the way I have a 3rd party temp sensor patched into the coolant pipe from the thermostat body to the top radiator hose.
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Yep, what problem were you trying to solve? The black hub is a good clutch, most that we see are still good, but are getting old, so have the probability of problems.
Since we moved to Florida I have noticed that she was running a little warmer that she did in California. I chalked it off to the higher humidity. Then last week when I was sat in traffic it started to climb up into the 200's. In addition my external temp sensor which is located in the front grill started to climb also. From this i deduced that the fan was not drawing air into the engine. I wanted to get in front of this before the real heat starts here in a week or too. My truck is a '94 but it has only 131k under the hood. Hub looked ok when I had it off.
NLXTACY
Wits' End
Humans feel humidity. The truck doesn't, at least not in a meaningful way.
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if you are running hotter at idle something else is going on. I started this thread because I had a bad "new" blue clutch. It only ran hot on the highway. It would idle just fine and this was in 100* summer temps with plenty of humidity.
Planning on having another go at this mod. Just removed the clutch. I pinky promise that this time I will leave it to drain overnight.....
Bringing this thread to life once again.
I completed my fan clutch mod yesterday. Let both halves of the clutch drain for 24 hours. Adjusted the plates to open at 95 degrees. Refilled with roughly 3/4 of a 59ml 15k bottle.
Although it seems to be a success, I have a couple observations on my way to work this morning.
It was about 65-70 degrees and sunny. At freeway speeds my coolant temp was 181-183. When I would come to a stop at a light it would max out at 186.
When I eventually parked I opened the hood and revved it a little bit. Quite a lot of fan roar as I would blip the rpm to 1500 or so
Does this seem pretty normal for these temperatures? My temps are obviously pretty low, but are they too low? 186 used to pretty much be my minimum operating temp.
I'm worried I overfilled it or something
I completed my fan clutch mod yesterday. Let both halves of the clutch drain for 24 hours. Adjusted the plates to open at 95 degrees. Refilled with roughly 3/4 of a 59ml 15k bottle.
Although it seems to be a success, I have a couple observations on my way to work this morning.
It was about 65-70 degrees and sunny. At freeway speeds my coolant temp was 181-183. When I would come to a stop at a light it would max out at 186.
When I eventually parked I opened the hood and revved it a little bit. Quite a lot of fan roar as I would blip the rpm to 1500 or so
Does this seem pretty normal for these temperatures? My temps are obviously pretty low, but are they too low? 186 used to pretty much be my minimum operating temp.
I'm worried I overfilled it or something
I would consider 186° a normal water temp reading on a stock 1FZ given your conditions
Wow this is a long thread....
Just go blue and don't look back..
Just go blue and don't look back..
Ok cool. And you think that at 186 degrees idling, when you blip the throttle there should be a fair amount of fan roar/noise?
