1HD-T "electric fan" sound when key first turned on

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You must check the glow system as soon as possible, this is not good for your starter or the batteries.

But, have you considered fuel related problems? How long is it since you changed the fuel filter?

Last winter my truck started to act wierd. I had to start for a 5-10 secs before the engine started up.

I suspected the glow system, measured power to the plugs and the plugs themselfs. All ok.

Then I noticed the fuel filter was wet on the outside, and as soon as i tightend the filter the truck became as new. Of course I replaced the filter with a new one later that same day. That was a easy fix for me.

My advise, check your fuel filter, all hoses and clamps around it.
 
Update:
I spent some time this evening nosing around the glow system. That noise might be the timer itself. Not sure yet.

Anyway, I'm not sure what the heck is going on with the glow relays. I think I only found one on fender but it looks like the No 2 relay. I could not find the other. There was a second relay inside the fender but it didn't seem to be the No 1 relay either. I hear no relay clicking and I don't think there is any voltage on the busbar. I'm thinking the PO did some really weird stuff to the glow system. I see too much electrical tape under there for my liking. Tomorrow I'll take a picture of the area. In the meantime, can anyone post a pic of the glow relays on a ~90 JDM HDJ81? Or the whole area behind the secondary battery? I may have to buy the No 1 relay and re-wire this thing.

On another note, I found the plug on my rad hose heater is very "touchy". It was definitely not making a proper connection until I pulled it and re-seated. Now the heater is getting hot! This should make a huge difference.
 
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As a "get you by" measure I would be inclined to disconnect both relays and use a momentary switch to run the #1 relay until you have a warmer place to work on the truck.

I'd 2nd this as an absolute munumum until you can get it permantly sorted.All that excessive cranking in the temps you are getting over there would have me worrying about the long term effect on the engine.Among other things you will possibly be getting some deisel dilution of the sump oil from all that unburnt fuel until it fires. I was cringeing just watching your video.
 
I would be looking at the fuel supply too... the way it's cranking so long it's as though it trying to
drag the fuel up from the tank. Next time you have to start it, prior to cranking, grab a container and pull the fuel feed hose off the injector pump and pump the primer to see what you have for fuel and air pockets etc before you get a solid stream of diesel. It could be that the cold air is shinking the or rings etc and allowing air to enter and the fuel to drain back to the tank. Have you got some sort of antigel additive in the fuel too?

You could also have a friend pump the primer while you crank.
 
Truck is dead.

I'm trying to charge the batteries. I've got a 1500W heater blowing on the fuel filter and injection pump. I can pump the primer now - but it's not getting hard to pump like usual. I've got a 600W rad hose heater. I have antigel in the tank. I tried running a bare wire from the battery to the glow busbar. It's still not starting.

I have no idea what the PO has done as there is NO #1 GLOW RELAY. This is why I tried powering the busbar directly. Does the busbar get hit with the full 24v? 'Cause I just tried powering it from the secondary battery (USDS).

I'm just about out of ideas here. Ether is my last resort and I don't have any here.

Does anyone have a No 1 glow relay suitable for a 1HD-T HDJ81 that they are willing to sell? It must be working of course.
 
I had to ether it. I got it to a local shop to replace the thermostat. I also asked them to check the glow plugs to see if they are getting any voltage, etc. The truck won't be coming home until I get this cold start issue resolved. As far as I can tell, there is NO #1 GLOW RELAY installed. I do see the #2 relay but it doesn't seem to be clicking. I gotta see how the #1 relay is mounted and wired (pictures please - I'm begging). I can easily wire it up once I find one new or used - anyone have an extra? I have no idea how to wire in a manual glow without the relay. I tried a heavy gauge wire directly from the battery to the busbar. This didn't seem to make any difference (plugs shot?) and ended up melting part of the wire.
 
dude .. If where me .. no deal with the glow relay ,.. just a wilson switch ( do a little search here ) and you are done. I never saw a 24V 80 series ..
 
I'm convinced I will need the #1 relay in order to get power to the plugs, wilson or otherwise. Unless someone knows where to take power from to feed the plugs? And what gauge wire to use?
 
Toyota Workshop & Repair Manuals - page: 1

Go to this site, download the manual for the 1-hdt engine. In the chapter about starting system you should find everything you need to know about the glow system.

Thanks. I have that manual. It shows great schematics but that means squat when you're looking at dirty, electrical taped, PO modified wiring and ghostly relays. The manual doesn't even show the proper outline for most of the parts. And it doesn't mention wire colours.

This is why I tap into this huge wealth of information and experience. Thanks guys. Keep the info coming.
 
Here is a pic that might help.
Red arrow points to the main glow relay that you want to activate with a momentary switch.
Cole Hersey makes a nice black momentary rocker switch that fits nicely, see pic. May need a little work with a file.
HDJ81 Glow relay.webp
DSCN0187.webp
 
Truck is dead.

I'm trying to charge the batteries. I've got a 1500W heater blowing on the fuel filter and injection pump. I can pump the primer now - but it's not getting hard to pump like usual. I've got a 600W rad hose heater. I have antigel in the tank. I tried running a bare wire from the battery to the glow busbar. It's still not starting.

I have no idea what the PO has done as there is NO #1 GLOW RELAY. This is why I tried powering the busbar directly. Does the busbar get hit with the full 24v? 'Cause I just tried powering it from the secondary battery (USDS).

I'm just about out of ideas here. Ether is my last resort and I don't have any here.

Does anyone have a No 1 glow relay suitable for a 1HD-T HDJ81 that they are willing to sell? It must be working of course.

The only thing on your truck that is 24volt is the starter. Your plugs are 12volt.
Check continuity on your plugs to make sure that they are working.
Give Simon (TLC import connnection) a call, if you are hiring help at least get someone who knows and drives these trucks.
 
If your #1 relay turns out to be MIA I would be using something like a generic Ford starter relay that you can buy anywhere for under $10 rather than trying to find the exact Toyota part.

The only reason I have not gone to straight manual in mine is because I have remote start and in some situations I have to set the truck to timer or low temperature start when there are no facilities to plug in.

When the superglow system s***s itself I am thinking of going with one of these systems rather than deal with the factory stuff: Glo Plug Timers by REDARC
 
Update

Thanks to the picture for 70's Guy, I was able to find the #1 relay. Pretty buried and I guess I was expecting it to be bigger!!

Anyway, I'm now manually glowing. I can hear the relay click, and my voltmeter takes a hit when I press the "wilson switch". But, it still has a hard time starting. I'm now narrowing my search down to the fuel system.

Question1: during cold weather (-15°C or colder), is it really, really difficult to pump the fuel primer? Mine feels like a rock. But if I heat it with a ceramic heater, it becomes easier to push. Then I can pump and pump and it does not seem to get harder to pump. Does this indicate fuel gelling? I have been dumping about 250mL of winter diesel treatment from Canadian Tire per tank. I believe the bottle says 1 litre will treat like 400 litres of fuel.

Question2: how does the fuel heater factor in to this? If it's not working will that cause starting problems?

I've contacted Simon and we're trying to make arrangements but he's really busy this week. I hate this worrying every morning whether my truck is going to start. And the :princess: is getting right pissed at me for buying this truck. What can I do next to diagnose the fuel system?

BTW: Thank you all for your help. So far I've solved the mysterious fan noise (some kind of cooling fan behind the dash that seems to have low temperature bearing problems), and I've gotten the glowplug situation figured out. Perhaps just one more hurdle before I can enjoy my holidays.

:cheers:
 
Pull the fuel feed hose off the injection pump the next dreaded morning and Pump some fuel into a container using the manual plunger on the top of the filter. This should give you some sort of idea whether you are getting air in the system overnight and also consistancy the fuel.
Any mechanical device will probably get stiff in the kind of temps you are experiencing.
I would also try and get the filter nice and warm and see if you can drain the sedimenter. Best not to have any ice crystals floating aroung causing problems.


If you want to try some more heaters...
check out Engine oil pan heaters, filter heaters & battery warmers. Designed for cars, diesel engines, more effective than block heaters, magnetic heaters. Suitable for Volkswagen vw beetle, Audi, Land Rover, Ford, Chrysler, GM,
They make an oil pan heating pads, fuel filter heaters etc

This could be a case of the fuel feed pump in the Injection pump struggling to lift fuel out of the tank
and pulling in air somewhere.
Probably another argument supporting the Walbro 10psi pusher pumps mounted near the fuel tank to assist the stock feed pump.

And you did check continuity and equal resistance on the glow plugs correct? You have to loosen the
10mm nuts to slide the bus bar out so they can be tested individually. Yes, great fun at -40c!
 
I tried to pull the fuel hose from the injection pump but it feels like it's made of steel. Too tough to pull in the cold. I'll wait for the weekend and put my 1500w forced-air ceramic heater on it for a while to loosen it up.

Geez this just isn't my month - this morning I found my rad hose heater was not heating. Plug will not make contact with the heater. There's another thing to fix. When am I going to have time to go xmas shopping?:bang:
 
Christmas is canceled this year haven't you heard?
:beer:
 
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