Help overheating na

[drifterx]

Patulong naman po mga master umiinit kasi yung pajero ko 2.5 tdic 4d56 na makina. Ang sama lang eh hindi ko makita kung umiinit siya kasi sira yung gauge what happens is everytime gamitin ko siya isang tabo ang nawawala tapos yung reservoir ko napupuno. Weird pa nun hindi naman umaapaw yung reservoir kasi tuyo yung paligid nya. I think water pump is still fine as I kept the motor running with the cap off sa radiator and water is moving, hindi rin bumubulwak pag inistart ko na. This happens with or without the aircon on and started after I got my aircon fixed. The aux fan for the aircon is working naman. No signs of water leaks. The thermostat has already been removed.

Here is what got done:
- Radiator overhauled.
- Replaced radiator cap.

Mga suggestions ng mekaniko ko:
- Wire the aircon aux fan to run all the time
- If the first suggestion fails top overhaul na raw to replace the master head gasket.

Medyo alangan ako dun sa unang suggestion as I feel its more of a quick fix than the cure. Ano pa po kaya ang namimiss ko? Meron pa ba ako dapat icheck? Could it be that the water pump is working but not enough?

Any input is greatly appreciated salamat po.

[afrasay]

panu mo nalalaman na maiinit o overheat na engine without a temp gauge?

[userfriendly]

install ka muna ng temp guage

[afrasay]

yun din iniisip ko. last time nasira din yun gauge ko ng gen1 paj. nasa overheat pirme pero nun open ko yun hood ok lang naman yun init ng engine. di naman nagbago ang idling and performance niya. unless you could smell and see boiling gasket sa between the top and block or something that would indicate overheating ok lang siya.

[ikabud_14945]

Nacheck mo na ba yung thermostat kung gumagana pa... it may be a faulty thermostat valve (stuck up to close position and doesnt open anymore).

[mark_t]

Patulong naman po mga master umiinit kasi yung pajero ko 2.5 tdic 4d56 na makina. Ang sama lang eh hindi ko makita kung umiinit siya kasi sira yung gauge what happens is everytime gamitin ko siya isang tabo ang nawawala tapos yung reservoir ko napupuno. Weird pa nun hindi naman umaapaw yung reservoir kasi tuyo yung paligid nya. I think water pump is still fine as I kept the motor running with the cap off sa radiator and water is moving, hindi rin bumubulwak pag inistart ko na. This happens with or without the aircon on and started after I got my aircon fixed. The aux fan for the aircon is working naman. No signs of water leaks. The thermostat has already been removed.

Here is what got done:
- Radiator overhauled.
- Replaced radiator cap.

Why was the radiator overhauled? 1992? Bata pa ito by my standards.
Are you one of those guys who uses water only on their cooling system?
Did you replace your radiator cap with Oem radiator cap?

Mga suggestions ng mekaniko ko:
- Wire the aircon aux fan to run all the time
- If the first suggestion fails top overhaul na raw to replace the master head gasket.

-Mali yon i rekta aux fan. Hindi ito dapat ginagawa ng auto elect. Find one.
-Paano sya nakarating sa conclusion na sira head casket? Nag compression test ba siya?

Medyo alangan ako dun sa unang suggestion as I feel its more of a quick fix than the cure. Ano pa po kaya ang namimiss ko? Meron pa ba ako dapat icheck? Could it be that the water pump is working but not enough?

Yon bang (reservior) expansion tank mo madumi at me putik sa ilalim?

Any input is greatly appreciated salamat po.

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[washburn]

tama painstall ka muna temp gauge para may guide ka

[drifterx]

wala na po yung thermostat. Yup balak ko rin paayos yung temp gauge. I feel its overheating based on the fact na lagi nagbabawas ng 1 tabong tubig tuwing ginagamit ko. At yun nga lumilipat yung tubig sa reservoir, this never happened before usually sa reservoir lang ako nagdadagdag ng tubig. There was this time na napansin ko kumukulo pa yung tubig sa reservoir.

[Dieseldude]

Install a thermostat. Engine will overheat without a thermostat.

[mbeige]

Magkabit ka ulit ng thermostat, you are more prone to having engine problems without one. It's been discussed here many, many times.

If your radiator cap is bad it will release pressure sooner than it should, letting water/coolant flow out of the radiator and into the reservoir. Replace with good, OEM cap.

[afrasay]

ah ok. while having someone rev your engine see if may bubbles sa radiator mo when you take off the cap. Could be a sign of a busted gasket. The top gasket separating your water gallery/combustion chamber could be busted.

[mark_t]

Bakit ka pumayag na tanggalin ang thermostat, what was the objective?

Your cooling system was designed to work with a coolant which is not pure water. Why and when did you stop using this? If you will notice, the boiling will stop once you increase the rpm of your engine.? This boiling is caused by hot spots in your engine which is due to scaling inside your engine ( very similar to the scaling you would see in public comfort rooms using hard water or deep well water source) Do you live in a village with a deep well water source?

The use of ordinary water in your cooling system is the cause of all this, in other words nabubulok na cooling system mo. You have actually significantly altered your cooling system, 1st removing your thermostat 2nd changing your coolant medium. Pero me magagawa ka pa,
you should drain your cooling system of this water and replace it with a proper coolant. Better if you could flush your radiator for a few weeks to dissolve the scale and rust, sana d pa sobra rust and scaling.

The use of a proper coolant is not to increase the cost of maintenance,
it is to increase heat transfer, rust protection and to aid your mechanic in
failure analysis (dyes).

You can start by cleaning your reservior (expansion tank). This is to help you in your failure analysis. This may sound ridiculous to mechanics in the
the US but hey we are in a third world country.

Now again, me putik ba o puro putik reservior mo?

[drifterx]

sirs i got the car second hand kasi. When we checked kung ang problema is yung thermostat dun namin nakita na wala na pala siya. Dunno kung kailan nila tinanggal ito.

As for the water were using nawasa but will be using distilled water and the coolant I got from stp nung namigay sila ng tsikot caps n shirts sa smx hehee once this gets sorted out. As for putik sa reservoir, I cleaned it out kanina and yes may mga kaunting sediments. I think the former owner was from cavite and might have been using deep well water from their subdivision. And yes the guy who did the overhaul on my radiator said it was very dirty.

I really appreciate the input mga sirs. Things to do tomorrow: Get my gauge fixed. Install a thermostat. Sir afrasay noob question lang po, but when I check for bubbles dapat ba nasa operating temp na siya or ok lang kahit malamig pa. Takot mabulwakan ng tubig hehehe. Salamats po

[afrasay]

kahit cold pa ang engine dapat walang bubble yun sa radiator. dapat flowing lang siya.

[drifterx]

salamat mga sirs its almost fixed. Medyo naayos siya sir mark_t doon sa advice mo na linis reservoir. Took it out and scrubbed it really good. Hindi na lumilipat doon yung tubig. Took it out kanina and drove around for about an hour with the aircon off. Ang nangyayari na lang eh you can hear parang boiling sounds sa radiator cap, may pressure pa kaya? Medyo hesitant lang ako buksan kasi mainit pa, will check kung nagbawas ng tubig. I will update you as soon as I get the info. I will try to replace the cap kasi yung nabili ko yung ordinary lang will get oem tom. Sir afrasay wala naman pong bubbles thank God.

Thanks talaga you guys have been very helpful.

[drifterx]

As to not start a new topic I have been reading around sa mga post about radiator caps but I just cant seem to find the right one. Tried 3 brands already pero same thing I can hear the pressure build up from the cap, the boiling sound. Pero pag yung dating federal mogul cap ang nilalagay ko wala naman yun nga lang balik sa same problem na lumilipat yung tubig sa reservoir. Am I missing something? Masyado po ba malakas yung resistance na .9 as originaly installed? I saw that hindi dapat maglagay ng mas mababa but in my case do you think it would be a good move to get a .5? TIA

[speedyfix]

when you overhauled the radiator did they replace the top portion of the rad? if so baka di maganda nilagay nila na top kaya this is happening and the cap cannot seal it properly.

[drifterx]

no sir they did not change the top binalik nila yung dati

[daimaoh]

the radiator cap was actually my first thought... sabi mo kasi napupunta tubig sa reservoir. sign of a faulty cap kasi yun.

try to check na rin for leaks behind the engine.

nangyari na rin sakin yung hindi ko makita yung leak due to no visible water puddles on the pavement. kaya pala tumutulo sa ibabaw ng makina sa rear part. the water gets evaporated due to the heat.

check mo rin yung oil mo. baka nahaluan ng tubig. problem with the head gasket

rule kasi... if you're loosing water, it's going somewhere else. this is normally a leak (palabas o paloob)

pero kung yung 1 tabo loss of water mo ay napupunta lahat sa reservoir... it must be something esle