Help with Subic Prado-Surf 2L-TE overheating

[ying]

mga diesel gurus, any suggestions on how to cure overheating problems on a 2L-TE engine? My friend has a '91 Prado and a '94 Surf, pareho sila nagiinit (a little over 1/2) sa traffic w/ air-con on.

As much as possible ayaw namin sana dagdagan aux fan. isip namin baka it might something to do with the conversion or wiring or piping.

[badsekktor]

wild guess lang po... since matagal na yun model... check nyo kung may tagas yun mga hose na nakakabit sa radiator and check nyo po yun water pump kung may leaks na.... check nyo rin po kung nag-cicirculate pa yun tubig dun sa radiator... baka kelangan lang pa-sonda or linisin yun radiator.

[jackaroo]

Check the ff:
1) if it has the right coolant mixture(not water alone)
2) if thermostat is still working
3) if clutch fan needs new silicone oil(fan's rotation is weak)
4) change radiator cap
5) ask Hanson to check injec timing

[Maki]

im inclined towards the thermostat being stuck due to the fact that the "car" has been in stock for quite sometime... tapos puwede din eh may barado sa radiator mo, like a few rows dahil sa kalawang... pero both are not likely to happen din kasi if its from subic...japan... its a rule of thumb there to use coolant so dapat may lubrication yung radiator mo and thermostat... never had any heating problems from subic cars,except maybe nung pauwi kami from subic eh naputukan ng lower radiator hose yung surf...heheheh

natutuyuan ba ng tubig or same level lang?

[garyq]

I would go with the suggestion of Maki but all the suugestions posted are things that should also be checked. Issue talaga ito sa 2L-Te engines from Toyota. Pag pinatagal yan madaling ng magcr-crack ang cylinder head niyan so pagawa na dapat. Normally when you buy rigs that has this motor you should completely drain and clean the cooling system. Normally they replace the thermostat or totally bypass it para continuous takbo ng cooling water sa engine mo. At least 2:1 ang h20/coolant ratio. As mentioned do all the suggested repair/check up steps. Di naman kailangan paltan kung hindi sira. Mas magastos magpalit o mag pa machine shop ng cylinder head so if I were u pagagawa ko na yan. HTH!

[ClemO]

Discovery ko lang, regarding the thermostat - don't run without one installed, since your engine will run too cold when there's a lot of airflow into the radiator (i.e. running on the hiway). If you have an automatic transmission, the ECU will not activate clutch lockup while engine temp is too low. The practice of the mechanics at subic is to remove or bypass the thermostat....

[roydok]

Follow the suggestions mentioned above. 1/2 range ng temp gauge is still ok unless the gauge registers to the hot/red zone. Your other option is an additional auxillary fan. Have the cooling fins of your radiator cleaned. Goodluck.

[kimpOy]

since papa check mo radiator mo,
pa tanso mo top and bottom

[ying]

*badsekktor, jackaroo, Maki, garyq, ClemO, roydok, kimpOy
dami dami salamat sa mga inputs niyo. all you guys have been so helpfull lalo na sa mga may hands on and experience with this type of engine. Definitely will heed all your advices.. lalo pa ngayon i just recommended my dad to get a '90 LJ78W Prado, ayaw ko masisi in the end. Btw we're getting it for 390k, oks na ba yun price?

[badsekktor]

di ko sure kung magkano talaga price ngayon ng mga subic na surplus.. if u want, may nakita ako nagbebenta ng surplus and isa sila sa nakita ko maayos mag-convert. pati dashboard and vents ng aircon. palit daw sila ng brake pads, timing belt, fluids, etc. as in wala ka na papalitan. (as what the owner says) ok naman nung chineck namin mga units. palit din daw ng buo steering... di ko pa nakilatis ng todo mga units nila pero mukha naman pulido. sa may e. rodriguez un showroom. Subic APEX ata yun name nung place.

[Maki]

parang i find 390k too steep, pero pag sa mga retailers (aka shops na mismo) ito kukunin, it all depends on the condition of the car...pag sa auction yan eh medyo mahal...

[aleckskie]

ying,

OT: pre musta yung dunlops ok ba?

yung ride ko 2lte din remember, we'll i made some research and found out that talagang issue yang overheat ng Surf 2.4 or 3L ng Aussie and UK, kahit 4runner ng US me recall din dahil sa overheating because of the cylinder head.

try this forums about Surf/4Runner:

http://www.showmesome.info/hilux/info/recall.htm

http://www.yotasurf.co.uk/Forums/forumdisplay.php?f=7

http://www.yotatech.com/forumdisplay...0&pagenumber=1

http://www.4x4wire.com/forums/postli...t=&Board=UBB13

http://pub12.ezboard.com/ftoyotasurfdownunderfrm17

[turbo]

I own a Surf and it overheated before. The culprit was the head. It is prone to crackin. Replaced it at a price of 40K. Than I di not use the OEM head gasket. I had a one copied in Evangelista Quipo, with soft copper, asbestos and tin. The OEM is all steel, this has difficulty in sealing the cylinders.

One more thing, the Surf will not stand a 100KPH speed at long period of time. This will crack the head again even if new.

I can now use it all day long without overheating, ofcoarse you have to overhaul the radiator.

[Maki]

not sustain 100 kph for a long period? how long exactly? kasi nung bumaba kami sa subic, convoy kami, 2 paj and a surf, ako nasa harapan (paj)... tinatakbo ko sa north eh 100-120min and mga 140-150 pag clear yung raod... nde naman nagoverheat yung surf, pero.... nagoverheat cya kasi tumatama pala yung (bakal portion) ng power steering na high pressure hsoe dun sa lower tube ng radiator, ayan nabutas sa kaka grind and init... pero nung pinalitan namin (pain in the *$$) ok na cya...nde kaya kelangan palitan yung thermostat for tropicalized conditions para mas mabilis lumamig makina?

[ClemO]

Far as I know, all thermostats I've seen are rated at 82 deg C; no such thing as 'tropicalized'... head crack happens when temp change is too sudden, a sticky thermostat or an incorrect unit can cause this...

[ying]

*aleckskie musta na pre. dko pa nakabit yun mga grantreks, still looking for 2 pcs para complete set na. yun nakakabit kasi ngayon 225x70x15s. btw thanks a lot for the links ha, they were very helpful at totoo nga, meron talaga problema yan mga 2L-TEs with regards sa overheating. Having 2nd thots na tuloy if kukunin pa namin yun Prado pero yun seller is willing naman to have it road tested on the highway para malaman nga if it will overheat on high speed or under load.

*turbo salamat pre for the info re the custom made head gaskets. can you pls. tell me exactly where ka nagpagawa? saka how much inabot??

you mean to say even after using that head gasket at overhauled radiator for sure na mag-overheat pa rin yan surf mo if running sustained speeads above 100 kph?

*Maki ClemO thanks too for your inputs!!

[OTEP]

Some thermostats do open earlier. Pero its better to stick with factory specs.

[turbo]

Yes, it will overheat again because the 2LT head cannot stand boost for a long time. The head gasket cost 1,200. If you bring the gasket, runners will approach you and offer to have it custombuilt.

Since changing to a new head(from the 3LT, which is not prone to cracking) I have not experienced overheating. Had tested it to run 100kph for sometime and has not experienced overheating. Hope it helps.