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i recently purchased multicab 12v 4x2 pickup. na notice whenever i start the engine, i can hear the fan on the front noticeble. is this normal?

saka where sa cebu ang recommended mechanic nio for multicab? mga bro ung hindi overkill mag presyo ha. if possible gusto ko sana ung freelance.
 

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Same set up with most multicabs in Cebu (as well as mine).
When you turn the key to ACC, the radiator fan will turn ON, so you will
definitely hear the sound.

In other set up, the radiator fan will not operate until the engine temp
reaches a certain point. (attached with a thermocouple).

Please attach some photos of your ride.

Have a good day.
 

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Greetings!

Somebody shorted out the thermostat / thermo sensor at the bottom of your radiator. They do that in case it fails so the engine will never overheat. it is a BAD thing because the engine was designed to operate at a temp at 100 C +. That is because any water that gets inside the engine can boil away, and the metal parts in the engine expand when heated, so it needs to be hot enough for proper clearances after warm-up.

Also if the fan is always running the engine will get too cold sometimes and the automatic choke will come on causing it to idle rough until it gets hot again. This will foul your spark plugs.

Warning: Do not do any electrical work on your car with the ignition on- ALWAYS have your ignition OFF to prevent accidental grounding of wires, fuses blowing, wires burning up etc

First, (with the ignition OFF) un-short the wires (most likely they twisted them together at the thermostat / thermo sensor). Make sure one wire is connected to each of the 2 terminals on the thermostat / sensor. Chances are, they did not disconnect the wires from the sensor- they only shorted them together. If they are not shorted or tied together at the sensor, then it is possible they tied the wires up near the fusebox or in between. Good luck finding out where they did that.. I would just run new wires if that is what they did.

Warning: Do not do any electrical work on your car with the ignition on- ALWAYS have your ignition OFF to prevent accidental grounding of wires, fuses blowing, wires burning up etc

If the wires are disconnected and twisted together, then (with the ignition OFF) just untwist them and connect one wire to each connection on the sensor. It does not matter which wire goes to which connector- it is only an insulated temperature-controlled switch, so neither connection is grounded so there is no chance you will blow any fuse or cause any short circuit.

Just don't let either of the wires touch any grounded metal parts. Use electrical tape if they stripped off any insulation from the wires hen they twisted them together. This will protect them from touching any grounded metal parts.

Start your engine and watch the temp gauge carefully. If the fan turns on when the temp is about in the middle to just above the middle of the gauge, then the thermostat / sensor is working. The fan should turn off after a few minutes when the temp drops a little bit. This should continue to repeat on/off/ etc... every few minutes. If you rev the engine a *little bit,* it will quicken the fan on/off time.

If the fan does NOT come on and the temp gauge keeps going up past the middle, shut off the engine immediately, go to a radiator shop and get a replacement sensor. If you drive your multicab there, just short the wires again to keep the fan running. Do not drive it with the fan disabled, it will overheat.

Let the radiator mechanic install the new (or used) sensor and connect it properly for you and test it right there, as above. BE SURE he uses teflon tape or other kind of heat-proof pipe sealant (like silicone sealant) on the sensor threads to seal it so it does not leak coolant! Make sure he insulates any exposed wires with electrical tape- not masking tape, not celephane tape- black electrical tape only.

Theres all different sizes of sensors, so you will need to match it up with the correct size. This is easy because all multicabs with the same size engine (that I have ever seen) use the same thermo sensor, but a sensor for a honda, Kia or toyota probably will not fit. In an emergency I have used pipe adapters (with teflon tape of silicone to seal the threads) to make the wrong size sensor fit, but I do not recommend that.

No matter what solution makes the fan turn on/off, carefully watch the temp gauge the next few days to be sure it turns on/off faithfully, because it is possible a bad thermostat sensor can suddenly malfunction, but most often, if they are bad they do not work at all. If it starts to overheat suddenly, just turn off the engine, and short the wires again. Then go get a new or used sensor as soon as possible.

If you choose to leave the sensor shorted, it will be OK for awhile, but eventually you will have troubles like fouled spark plugs from the choke coming on during cold running, or damage to moving parts that are not at the correct operating temperature.

DO NOT let anybody convince you it's OK just to leave the sensor shorted and the fan running all the time. Mechanics always short those sensors out to "guarantee no overheating." They ALWAYS cheat like that. The Japanese are very good engineers- they put that temperature sensor in because there are good design reasons for doing so. If it was not needed they would not have put it in there to begin with!

They are very cheap- a used sensor will cost maybe p100. A brand new sensor (very hard to find) will cost about p300. Do not try to save money by just leaving it shorted even if your engine seems to run fine.

Mine was shorted when I first got my multicab, because it was not switching on the fan- it was defective. I changed the sensor with a used one. It ran better and sounded much smoother after I fixed it. It especially idled smoother when it was warmed up because the choke no longer was closing during running on cool nights. Better gas mileage too! The temperature gauge always stays right in the middle, not matter how hot or cold the weather.

Hope that helps
Craig in the mountains of Cebu
Where the Cebuana ladies outshine the orchid flowers by day, and the moon at nite!
 

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@iesnes, thanks very much...napag-isip ako dun...

wala pang one week ung unit sa akin, actually, papatignan ko ulit ung makina kasi although tahimik nmn kapag idling, na-bo-bother ako nung pag-on ng fan kahit nde pa actually ngsa-start...

tska gusto ko din palagyan ng aircon, na kasama ung mga passengers sa likod, nde lang sa driver's....paayos ko muna itong sa fan...

sa uulitin...thanks.
 

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nice. is your zuki amphibian? how deep in water can it go? looks real cool and 'macho' looking.
hohoho, got a little spin and swim at caliraya lake(laguna) it can go 2ft deep in the water. iam still working on the snorkle and sealed carb and distrib cap so i can go deeper.
cheers
 

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can you share how you did that, making your zuki run on water...im from cebu, its pretty cool to know that your ride can withstand water that deep...teach me and maybe upload some pix. if you dont mind
 

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Greetings!

Somebody shorted out the thermostat / thermo sensor at the bottom of your radiator. They do that in case it fails so the engine will never overheat. it is a BAD thing because the engine was designed to operate at a temp at 100 C +. That is because any water that gets inside the engine can boil away, and the metal parts in the engine expand when heated, so it needs to be hot enough for proper clearances after warm-up.

Also if the fan is always running the engine will get too cold sometimes and the automatic choke will come on causing it to idle rough until it gets hot again. This will foul your spark plugs.

Warning: Do not do any electrical work on your car with the ignition on- ALWAYS have your ignition OFF to prevent accidental grounding of wires, fuses blowing, wires burning up etc

First, (with the ignition OFF) un-short the wires (most likely they twisted them together at the thermostat / thermo sensor). Make sure one wire is connected to each of the 2 terminals on the thermostat / sensor. Chances are, they did not disconnect the wires from the sensor- they only shorted them together. If they are not shorted or tied together at the sensor, then it is possible they tied the wires up near the fusebox or in between. Good luck finding out where they did that.. I would just run new wires if that is what they did.

Warning: Do not do any electrical work on your car with the ignition on- ALWAYS have your ignition OFF to prevent accidental grounding of wires, fuses blowing, wires burning up etc

If the wires are disconnected and twisted together, then (with the ignition OFF) just untwist them and connect one wire to each connection on the sensor. It does not matter which wire goes to which connector- it is only an insulated temperature-controlled switch, so neither connection is grounded so there is no chance you will blow any fuse or cause any short circuit.

Just don't let either of the wires touch any grounded metal parts. Use electrical tape if they stripped off any insulation from the wires hen they twisted them together. This will protect them from touching any grounded metal parts.

Start your engine and watch the temp gauge carefully. If the fan turns on when the temp is about in the middle to just above the middle of the gauge, then the thermostat / sensor is working. The fan should turn off after a few minutes when the temp drops a little bit. This should continue to repeat on/off/ etc... every few minutes. If you rev the engine a *little bit,* it will quicken the fan on/off time.

If the fan does NOT come on and the temp gauge keeps going up past the middle, shut off the engine immediately, go to a radiator shop and get a replacement sensor. If you drive your multicab there, just short the wires again to keep the fan running. Do not drive it with the fan disabled, it will overheat.

Let the radiator mechanic install the new (or used) sensor and connect it properly for you and test it right there, as above. BE SURE he uses teflon tape or other kind of heat-proof pipe sealant (like silicone sealant) on the sensor threads to seal it so it does not leak coolant! Make sure he insulates any exposed wires with electrical tape- not masking tape, not celephane tape- black electrical tape only.

Theres all different sizes of sensors, so you will need to match it up with the correct size. This is easy because all multicabs with the same size engine (that I have ever seen) use the same thermo sensor, but a sensor for a honda, Kia or toyota probably will not fit. In an emergency I have used pipe adapters (with teflon tape of silicone to seal the threads) to make the wrong size sensor fit, but I do not recommend that.

No matter what solution makes the fan turn on/off, carefully watch the temp gauge the next few days to be sure it turns on/off faithfully, because it is possible a bad thermostat sensor can suddenly malfunction, but most often, if they are bad they do not work at all. If it starts to overheat suddenly, just turn off the engine, and short the wires again. Then go get a new or used sensor as soon as possible.

If you choose to leave the sensor shorted, it will be OK for awhile, but eventually you will have troubles like fouled spark plugs from the choke coming on during cold running, or damage to moving parts that are not at the correct operating temperature.

DO NOT let anybody convince you it's OK just to leave the sensor shorted and the fan running all the time. Mechanics always short those sensors out to "guarantee no overheating." They ALWAYS cheat like that. The Japanese are very good engineers- they put that temperature sensor in because there are good design reasons for doing so. If it was not needed they would not have put it in there to begin with!

They are very cheap- a used sensor will cost maybe p100. A brand new sensor (very hard to find) will cost about p300. Do not try to save money by just leaving it shorted even if your engine seems to run fine.

Mine was shorted when I first got my multicab, because it was not switching on the fan- it was defective. I changed the sensor with a used one. It ran better and sounded much smoother after I fixed it. It especially idled smoother when it was warmed up because the choke no longer was closing during running on cool nights. Better gas mileage too! The temperature gauge always stays right in the middle, not matter how hot or cold the weather.

Hope that helps
Craig in the mountains of Cebu
Where the Cebuana ladies outshine the orchid flowers by day, and the moon at nite!
sir i got a suzuki scrum 12 valve pick-up type but when i un shorted my sensor it feels hot inside the front seat, any suggestion what should i do? but the temp. gauge stays at the middle too
 

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If the temp gauge stays in the middle that is exactly what you want. The fact it is getting hot under the seat proves the engine was running too cold before, as the engine is under there. If it is uncomfortable for you, get some of that thin silver insulating material and line the underside of the seat base/engine cover.

It's better your engine is running at normal temperature range than getting too cold when you are not running too hard. As I explained, the engine is designed to operate within a certain range- that is why they put the temp sensor on in the first place. Remember engine that is Japanese made- they know what they are doing. If that part was made to be shorted, they would not have installed it

Hope that helps
Craig
 

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okay sir. thanks. i wanted to put that thin silver insulating material and line the underside of the seat base/engine cover but the hardware does not recommend to glue it with rugby because it will just melt due to its petroleum base adhesive. what should i use instead?
 

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@ iesnes,

question again...my fb was running ok (even if i have not un-shorted the wires yet), up until last week when the fuses for the plate light burned out and melted...yes,it melted and me nadamay pa na 2...i actually did not notice the smoke as the windows were open and i was thinking about other things kung nde pa tinuro sa akin...grounded cguro somewhere..

now, i am really thinking about having my fb rewired and my concern about the fan always running returned...is it anyway connected to my fuses burning? thanks...
 

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To be honest I would need to be psychic to know what condition your wiring is or know why the wire to your plate light shorted to bare metal or another wire. Most likely it shorted to bare metal somewhere.
If you know how to unshort your temp sensor you should be able to follow that wire from the plate light to the short and tape it up. I suspect the wire is probably burned as well, and the fuse in there was probably too big- that is why it melted- it should have only blown.
in any case, it would be senseless to re-short your temp sensor. If the wiring is really in bad shape (which I doubt) it will blow fuses regardless. But if I were you I would check each fuse that it is the correct amp rating, as written on the fuse cover

Hope that helps
Craig
 

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in my opinion cityboy, i would not rewire and have the sensor for the radiator fan work. As we all know the purpose of having it is to let the engine reach its desired temperature. Japanese designed it for the use in their cold weather country(snowy country)... Now, if your in the Philippines which the temperature is hot, theres a great importance to keep your engine on normal temp. most of the zuk carry sold in the philippines are likely set-up that way.... And 1 advantage is, your seat wont get hotter...
again, this is only my opinion... thanks
 

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I'm in Philippines. Even on a hot day, with my sensor jumped, the temp of my engine will go from cold to hot, depending on how hard I am driving. This is NOT good. When I am driving easy, the temp goes WAY low. In fact, my automatic choke will come on and I can hear the engine idling rough. This not only wastes gas, but can cause carbon build-up in the head and plugs.
In addition, as I said, the temp regulation is controlled by the sensor. ALL CARS in the world are made with a sensor to regulate temp, NO MATTER how hot the country is. Why? Because even at 35 C your engine will run TOO COLD. It needs to be just above 100 C just to burn off any condensation inside the engine to prevent corrosion. Also, the parts in there are designed to EXPAND and work at a certain temp. If your engine is always cooling too much, the parts will contract and that can and WILL cause mechanical failure in the future. It may take 2 or 3 years but you most definitely WILL have problems.
The engine cover under my seats gets very warm because the engine is 110 C. If you don't like it, then insulate it. For me, it's OK because I have installed Toyota seats that have thick foam. The stock seats are shit and have only 30mm of foam so you can feel the heat. What feels "hot" to you is NOT hot to your engine.
If anybody doesn't believe me about the importance of keeping your engine temp stable with a thermostat sensor, then talk to a REAL mechanic from the US, UK, Austrailia or the EU. I have not yet found any mechanic in Cebu that does not cheat or mickey-mouse repairs. They are ALL backyard mechanics that just learned by doing.
Even the most highly recommended and biggest mechanic here installs crappy defective parts that have failed within a week or a month. He will get you going but his work is shit, and he will NOT stand behind any defective work he does. So, anything except engine overhaul I do MYSELF. At least I know what has been done because I will buy new parts, or at least good condition surplus. My truck has been running fine for 4 years, and the fan sensor is operational. I live in the mountains and drive it hard. It is also 4WD so I take it off-road too.
Don't listen to people who tell you it's OK to disable sensors or other critical parts of your vehicle, except if it's an emergency. The Japs are way smarter than Filipinos or even Americans making cars, after all- they have been doing it even before any cars existed here. If anybody can tell me what model of car is designed and manufactured in the Philippines maybe you can change my mind : )

Craig
 

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coolant?

Greetings! Most here don't put any coolant in radiator except "local" as if it were just a joke. But the fact is you need it to keep rust out of cooling system so it can do it's job of removing excess heat. It keeps it from boiling over (overheating) and is how it is designed to operate. It don't matter if you are in the desert, or the arctic, the correct operating temperature is still the same.
I grew up in the south in America in the 1950's, and every thing Filipinos try to do to get around the design of a cooling system we already tried, and they all failed.
MUST have coolant, must have a thermostat, a fan, a water pump, and clean system. Plain water which is rare in Philippines still leaves deposits when it is heated, just look in the pot that you boil water in and you will see what i am talking about. That deposit stops proper heat exchange, and slows the heating of the water, also causes an engine to overheat. Hook up all sensors, fan controls, flush system, put coolant in, and enjoy your aircon, and ride without fearing getting stranded by a fried engine! :eek:
Good luck! :D:D

I don't know of a PI car, but in WWII they built and flew a bamboo airplane!
 

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I agree with sir Iesnes with the importance of fan temp sensor. and secondly the thermostat. But sir iesnes, if you dont found the real mechanic in cebu, I found already, not with experience but with theory on his first on mind. Go to Argao proper, look for the owner of Teouard Audio System. A mechanic, a lathe machine operator, a welder, a carpenter, an electronics technician. Overall is a meticulous guy.

Sir Roger, i agree also. Coolant is so important. Got too much problem before on my van cooling system but after using coolant, it really helps...
Higher boiling point and anti rust for Philippine use is the advantage we get because we dont have winter here

Huwag kayong maniwala sa mga manghuhula, para kayong niloloko. Dapat may theory...
 
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