Nissan Frontier TD 27 Overheat at 100kph above...help

[frt]

This is my dads ride. It overheats when driven at 100 kph for a long period (about 30 mins). But when slowed down to 80 kph it cools down.

Any suggestions? Any chance this can be the engine thermostat? Is the TD27 sensitive to this?

[GlennSter]

ohh...have the same problem with my safari.

check your water pump dude.

[frt]

Water pump? Whats the symptom? Did it solve your problem when you changed it?

[boybi]

check first if the radiator have the correct mixture of coolant and water, and not pure water only.

[GlennSter]

frt...water pump problem nung akin.kasi may tagas na...so pagt humahataw ako...lalong nauubos ang water...so over hat ako nun lagi.

check for leaks...even the radiator cap shoul;d be checked.

[PROTREK]

hi frt! ito ba yung frontier nakwento ni afrasay sakin? me aftermarket bullbar ba nakakabit? or baka yung temp sensor ang problem...

[vinj]

Check first the Thermostat, it could be stuck already so when the car revs/speed goes up, the coolant flow is inadequate.

It's quite rare for such an engine to overheat. Has the radiator been drained and cleaned already in the past? HOw are the belts?

Check also if theres any water and oil mixing in the cooling system. I'd advise against using the car until the problem can be solved.

[frt]

yup ito yon. No bullbar. Temp sensor was checked at Rey Electrical ok naman.

[vinj]

Next step would be to check the belts, fans, and radiator then. Try to check also for any signs of oil mixing with the cooling system... That happened sa car ng friend ko and he needed an overhaul (buti nalang di cracked yung block)... he also had the same problems of heating up when the car ran at speed.

[OTEP]

Mukhang hindi makahabol ang waterpump mo kasi high speeds lang ang overheat. Ganyan ang W123 ko dati. Pero kahit mag-idle ako maghapon sa traffic hindi nag-ooverheat.

[theveed]

I think water pump yan, car ko din ganyan, pag sa city di ako naooverheat, pero kung nagbabatangas kami at nasa Star Toll umaakyat temp

[frt]

San ok bumili nang Nissan parts around makati or SOuth Alabang area? I might buy the water pump.

[Ungas]

Try mo sa ex-Universal Motors; CAR Inc. na yata ang name nun sa Pasong Tamo extension near Kodak Bldg.- Don Bosco.

[afrasay]

Mag add pa ako ng isang pala-isipan. Why is it that when the temp gauge reaches the H scale we can still hold (with our bare hands)the cylinderhead cover and the radiator cover? And upon opening the radiator cap no steam comes out of the radiator just excess water? Parang operating temp lang ang heat. I'm talking of the same car kasi dumaan sa kamay ni cousin Ferdie ito ;)

[Ungas]

Teka, sigurado kayong water pump? Baka naman temp sending unit ang may sira? Kung nahahawakan ng kamay ang valve cover, di pa overheat yan.

Isang naisip ko lagyan nyo ng oil pressure gauge. And then check. Kung mataas agad ang oil pressure mali ang torque ng cyl head bolts.

Dapat di na mahahawakan ang valve cover pag overheat. Lalong lalo na sa radiator cap. Malamang may bumara lang sa water line, kung san dumadaan ang water and coolant.

[afrasay]

nun hinahawakan ni ferdie ayokong subukan. alam mo naman sensitive mga kamay ko , eh nun pinatong ko aba eh pedeng ibabad. the temp sensor checks out ok. pina test ni frt kay reys electrical. I called up mang gil re this dalawa daw yun sensor, how true kaya ito. anyways try mo nga yun water pump, nun una pina check ko yun vulcanize ng pulleys ok naman. pati clutch ng fan blade nilagyan na ng silicone. may I add that the cylinder head have been shaved (binkong na kasi) and installed with new head gasket.

[afrasay]

BTW the frontier has 50k + on it's odometer.

[Ungas]

Hmmm... kung shaved na yung cyl head nyan, mas maganda nga lagyan muna ng oil pressure gauge. Para ma-check kung sobra sa bawas o kaya sobrang higpit ang bolts nung pagkakabalik ng mekaniko. Sino ba merong Service Manual para makita yung tamang torque tightness? Di hamak mas mura ang gauge kesa sa buong water pump. Madali pang ikabit at alisin.

Sabi ko na nga bat ayokong magreply eh... palaisipan yan. :bwahaha:

[frt]

Alfred : dalawang sensor???

JOn: Palaisipan talaga. The pick up is now with me. Ill try to test it myself sa highway.

[afrasay]

yup two. isang screw isang socket na plastic immediately above it.. pero pag yun may screw tinatanggal bumababa yun temp readings.