Radiator / Overheating Problem

**jodski** · September 24th, 2017 10:31 AM

Originally Posted by jdotxx

Makiki ride na po dito sa thread, nag pa overhaul po ako last July ng rad ko tapos napansin ko na nabawasan yung coolant ko sa reservoir check ko po meron leak sa rad ko. Ayaw ko na po ibalik don sa pinag paoverhaulan ko para ipabaklas pa ulit. Balak ko na po na palitan na lang ng bnew. Di naman po ako lumalayo layo dito dito lang ginagamit yung auto. May masasuggest or refer po ba kayo saan ako pwede makapag canvass ng mga radiators and thermostat? Toyota BB po ride ko. Salamat po.

Wala ka nakikitang visible leaks na kakulay ng coolant mo?

Have you already checked or replaced your radiator cap?

Find out mo muna kung saan nag leak. If wala makita then next suspect mo na madali gawin is replacing the radiator cap...

**dr. d** · September 24th, 2017 11:39 AM

i read somewhere, that these coolants are fluorescent. if the appropriate (UV?) light is used, the leak, even the small ones, can be more easily seen.
is this true?

**hammerl** · September 24th, 2017 08:45 PM

may nakita ako na prestone na color red sa ace hardware last week. tinatapatan ng UV light para makita leak. di ko masyado nabasa ano pinagkaiba ng red sa yellow coolant variant nila.

**mina_nuka** · September 24th, 2017 08:51 PM

Originally Posted by mulawin00

(Chevrolet Venture LS 2003, V6 3.0li Gas)

Overheating Chevy Venture...
never had a problem regarding this until about years ago.

1) the Radiator, Radiator Cap, Water Pump, Thermostat are now all new. Recently flushed and coolant (Shell Reco-cool) replaced

2) both Cooling Fans (driver side and passenger side) are now all new, including the Underhood Fuse/Relay Junction Box who's terminals burnt out (the new one burned also, apparently a design flaw...resolved by soldering the failed wire directly on the pin)

3) A/C Compressor (Delphi) was replaced 2 years ago and should be still be relatively "new"

These worked for a while until recently when it began overheating again!

Wizzard recommended getting the ECU/PCM checked by "someone in Banawe" coz they find nothing wrong with the wiring. Apparently the computer is not closing the ground on the relay.

They temporarily setup up a toggle-switch that directly hooks up the power from the battery to the driver-side aux fan so I may drive the van and not need towing. It works but of course the "Check Engine" warning light switched on.

Has anyone encountered a similar problem before???

Not enough information.

Is the check engine light on when this happens? Is there a vacuum leak at the intake manifold?
Is the speedometer working?
Some GM cars have the speedo input to enable the cooling fan. Some, the radiator fans are pulse width modulated.

Any thing else not normal to the operation of the vehicle?

**jdotxx** · September 25th, 2017 08:46 PM

Originally Posted by jodski

Wala ka nakikitang visible leaks na kakulay ng coolant mo?

Have you already checked or replaced your radiator cap?

Find out mo muna kung saan nag leak. If wala makita then next suspect mo na madali gawin is replacing the radiator cap...

Tnx 4 d reply sir jodski. Nakikita ko nga po sa harapan po basang basa po pero di po don sa taas
Sa may cap nanggagaling feeling ko since na buksan na sya di na ganoon na seal kaya nag leak. Hndi ko pa po natry palitan yung cap iyun pa rib po ung dati. Pag po ba pinalitan yung cap ano po ang possibilty na matanggal ung leak?

Tsaka po nag pa estimate po ko kung palitan na rad 5k daw ioorder pa raw po. Tsaka po pasingit na nga rin yung sa right side sa harapan ko pong shock may tagas na na langis palitin na rin 3.8k ang estimate. ano po sa say nyo po dun?

**hammerl** · September 25th, 2017 11:34 PM

Nakikita ko nga po sa harapan po basang basa po pero di po don sa taas

na check mo na yung drain plug baka dun leak mo?
Try mo maglagay ng pansalo sa ilalim kung saan napatak yung leak, kung dumadami pagkatapos mo I garahe ang kotse mo, yung leak ay nasa ilalim.since sabi mo wala naman sa radiator cap.

Sa may cap nanggagaling feeling ko since na buksan na sya di na ganoon na seal kaya nag leak.

anong ibig mo sabihin na nabuksan na? na overhaul ba ibig mo sabihin?kung oo, dapat sealed na radiator mo kasi narepair na leak sa radiator mo.

Hndi ko pa po natry palitan yung cap iyun pa rib po ung dati.
Pag po ba pinalitan yung cap ano po ang possibilty na matanggal ung leak?

pag pinalitan mo sir yung radiator cap at kung doon nangagaling po yung leak mawawala na yun.

Tsaka po nag pa estimate po ko kung palitan na rad 5k daw ioorder pa raw po. Tsaka po pasingit na nga rin yung sa right side sa harapan ko pong shock may tagas na na langis palitin na rin 3.8k ang estimate. ano po sa say nyo po dun?

palit shock absorber? palit ka pareho sir, baka masira na din yung kabila kung may sira na yung isa para isang gawaan nalang

**mulawin** · September 26th, 2017 04:25 AM

Originally Posted by mina_nuka

Not enough information.

Is the check engine light on when this happens? Is there a vacuum leak at the intake manifold?
Is the speedometer working?
Some GM cars have the speedo input to enable the cooling fan. Some, the radiator fans are pulse width modulated.

Any thing else not normal to the operation of the vehicle?

thanks for the response mina_nuka

re: check engine light
no, it wasn't lit. At least not until the fan was directly connected to the battery so it may be driven to wizzard's then back home.

re: vacuum leak
it wasn't checked in the shop (servitek), though I did check the oil cap and dipstick for signs of gasket trouble but they're clean. No vapors coming out either or anything that indicates gases are leaking into the cooling system.

re: speedometer
yes, it's fine at least when i drove it from servitek to wizzard's...already hooked up to battery. I'll drive it around just to check again. is there a way to find out if it's pulse width modulated?

other than the aircon not working again, there was nothing else acting strangely. i suspected a/c compressor issues but wizzard's didn't find anything wrong with it. their mechanic said the ecu/pcm isn't closing the ground. they wanted to remove the computer box and have it "repaired" by "someone in banawe". i'd really like to do my homework first before agreeing to that. by the way i've got the diagrams from the hayne's manual however i must admit i'm a noob with that.

any info would help in solving this "mystery"

nga pala, hammerl suggested checking out the coolant temperature sensor, it's never been replaced ever so i got a new one and will have it installed

**mina_nuka** · September 26th, 2017 06:09 AM

Originally Posted by mulawin

thanks for the response mina_nuka

re: check engine light
no, it wasn't lit. At least not until the fan was directly connected to the battery so it may be driven to wizzard's then back home.

re: vacuum leak
it wasn't checked in the shop (servitek), though I did check the oil cap and dipstick for signs of gasket trouble but they're clean. No vapors coming out either or anything that indicates gases are leaking into the cooling system.

re: speedometer
yes, it's fine at least when i drove it from servitek to wizzard's...already hooked up to battery. I'll drive it around just to check again. is there a way to find out if it's pulse width modulated?

other than the aircon not working again, there was nothing else acting strangely. i suspected a/c compressor issues but wizzard's didn't find anything wrong with it. their mechanic said the ecu/pcm isn't closing the ground. they wanted to remove the computer box and have it "repaired" by "someone in banawe". i'd really like to do my homework first before agreeing to that. by the way i've got the diagrams from the hayne's manual however i must admit i'm a noob with that.

any info would help in solving this "mystery"

nga pala, hammerl suggested checking out the coolant temperature sensor, it's never been replaced ever so i got a new one and will have it installed

There are four versions of 2003 Chevy venture.
Base
LS
LT
Warner Bros. Edition.
What is your VIN? At least the first eleven characters.

**ninjababez** · September 26th, 2017 06:17 AM

pa piggyback lang mga bros...
normal ba na * 200k km, toyota coolant replaced every 2 years (after warranty); na di pa napapalitan or na repair ang radiator?
lagi kasi ako inaalok ng mga shops, kesyo need daw i overhaul kasi luma na; ok lang sana, kaso ang worry eh baka magka problema pa.

**StockEngine** · September 26th, 2017 06:33 AM

ilang years na bro? some toyotas really last long before that water pump fails or that thermostat. how does the used coolant loom like? malinis naman? if thw coolant is a premix-wala gaano rust.. some have rust kasi yun nga..distilled lng ang gamit... wala sya rust inhibitors..

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