Direct connection radiator fan is harmful

[umans]

AOA
i need ur help dears.i have aulto 2006 model(CNG).a few months back,my car got heated up,there was a white smoke through air outlets.i stopped it at nearby workshop.the culprit was thermostat valve with got heated up.mechanic removed the valve and make the fan direct and said that fortunately head gaskit is ok.
after reading ur thread i make the fan direct.it has been working ok and temperature needle remains exactly at middle.
i was planing to install thermostat valve as well but 5 days back and today when i was traveling on motorway I've noticed that temperature needle start going up from middle after about 100Km.i was driving at speed between 100-110 km/h.i switched of the AC then it goes back to middle.in short with AC and speed above hundred the car starts heating up.when i reduce the speed to 90km/h or switch off the AC it becomes normal.
in city it remains at middle always.
i had put the new coolant in radiator 1 months ago and coolant Laval in radiator is also normal.
plz advise me what to do now?
what will be the problem?
also suggest some good workshop in Lahore.
thanx

[digimanpk]

@umans

did you mean
after reading the thread you made the fan indirect ?? ( through radiator fan switch)

Make sure your radiator grill is not blocked by anything. If there is dirt, plastic bags or other stuff stuck in it , clean it and make sure than all the fins are straight( so no resistance is offered to the air flow).

Check for clogging in the radiator, When you start up the engine, and the radiator starts to get warm, make sure all the parts of radiator at at same temperature, if a place is cold and other are warm, it has a blocking. Plus check for rust in your radiator as well.

At high speed, the wind itself also works as a coolant, so the water in the radiator should not heat up.

[umans]

thanx for reply dear.
i make the fan direct after reading this thread.ok i'll check it after leaving my office.
i have serviced my car just few days before,i don't think there will be any dust etc.if there is a fault in radiator(in its fin or somewhere else) then it should heatup in city as well or it should heat up within few kilometers on highway but problem starts after about 100 km
anyways!! i'll let u know after checking its condition.
any other thing comes in ur mind plz share...
thanx

[umans]

sorry! i mean to say after reading this thread i made the fan automatic.
actually i was debugging a software.meter ghoma hua hy yar.....:d

[digimanpk]

Check the radiator coolant color as well.

[crazy_rider]

@digimanpk
u r right from now on i m not gonna respond to anything good or bad posted by d_o_d
i hav failed to read him yaar u say he is stubborn very well said but i call him bigot
he is kinda person who only wants to compel is opinion he may b a auto mobile eng but in his home not here
d_o_d banday ka bacha ban jaoo i hav adviced u many times but still u r bigot few days back i said its ok from now n relax but u started all again

this is pak wheels not canada wheels no car here has any computer (ecu) here and 90% cars dont hav even single sensor here

try to behave well or leave this forum no place 4 u
if want to share somthing share it like humans not dogs
u r not superlative to us that we will praise u what ever u say

@fm01
u r welcome here but dont behav like d_0_d
bcuz he is no more welcomed here share what u got with what v hav like humans

@digimanpk
leave him yaar
what about ur final mileage ????????????????
i think ur car will never gonna end:d:d:d:d:d:d

@usman
ur car heated up few months back due to some reason
so keep it in mind that heating problem is now chronic

so ur car heated due to something that is malfunctioning
of something if culprit was thermostat so with direct fan and nothermostat installed ur car should remain ''thanda''
but still it is heating up
now make it clear that there is a red area or red zone in gauge shown in every car so lil bit hike in temp is normal ok 3\4 needle is also ok but should b cautious

so no need to worry but make it sure and keep in mind the winters nr approaching so u should install genuine thermostat and dont forget to replace in every year ths prevent clogging in thermostat and try to drive with auto fan and thermo in summers toooo

bye now load sheeding time has came tommorow i will make all other details

[displacement_on_demand]

d_o_d banday ka bacha ban jaoo i hav adviced u many times but still u r bigot few days back i said its ok from now n relax but u started all again.

I think you are the one who needs to watch the language here Crazy_Rider

this is pak wheels not canada wheels no car here has any computer (ecu) here and 90% cars dont hav even single sensor here

You better go and check your numbers again.. You maybe driving some 80's model scotter not other people... and btw the technology is same.. as I said... Pakistan is not using its own technology in cars.. is it?

try to behave well or leave this forum no place 4 u?

are you telling me to behave? you are the one calling people names like bigot...

if want to share somthing share it like humans not dogs

Your language tells who is who...

u r not superlative to us that we will praise u what ever u say

I did not ask you or anyone else out there to praise anything I said... I just post what I know... and they are all my opinions... if you or anyone else out there likes it... take it and use it... otherwise don't call people names...

IF this is your post does not mean you have the right to control people... THIS is a forum.. people share opinions... You can't just post something and SAY you are the best and whatever you say is right...

When I post something I don't tell people Hey.. I am 100% right...No.. I maybe 100% wrong... So if someone doesn't agree with me.. say so... and if someone doesn't wana use my advice.. I'm still happy...

and Please... Don't call people names and than tell them to behave..

[FM01]

@All

We are helping each other out in this forum. Please understand each other and their opinion, and use good language (use aachi zaban.:p)

I have not said any thing to crazy rider and he said share what u got with what v hav like humans. This is rude language guys.

Agar ap loog thanday nahi houn ge to gari keisay thandi ho gi :p, phir direct connection radiator fan ke sath chalani paray gi jo ke harmful hai. :d

TC:-)

[FM01]

Here is some basic information on cooling system.

Attaching a link for your reference:

A Short Course on

Cooling Systems

Please go through it, it describes different components and their functions in cooling system. At the end you will learn about the Cooling System Maintenance and Repair. If we follow it, I am sure INSHALLAH that we can solve most of the cooling system problems in our cars.

http://www.familycar.com/Classroom/CoolingSystem.htm#What%20Is%20a%20Cooling%20System

[digimanpk]

@All

Take a chill pill guys!!! :P:P:P:P:P

@C_R
Yaar gari is still standing. I told you ,the doeesnt get used much. I am getting some work done on Foundation today, so after that, main aik dafa tanky khali kar kay hi dam loon ga

Current mileage is 123 kms.

@FM01
Nice info FM01. Provides good understanding of the cooling system.

[umans]

@digimanpk
coolant color is light green and i think its ok dear.
@ crazy
dear my car heated up few months back.and the problem i described has started just week before.in city driving its still OK and even its OK in 1st hundred km of long driving.
what u people suggest?

[digimanpk]

@umans
yaar will reply to you tommorow

@C_R

Yaar mileage is 130 kms and counting, but I need to refill now as I have to go somewhere tommorow so cant afford an empty tank in the middle of the road. The way it has done 130kms i am pretty sure it could go 20 kms more. so lets call it 150 kms shall we.
Not bad. :P:P:P:P:P:P:P:P:P

@FM01
if you are listening to me, help us out , wont you??

[FM01]

@umans

Lets see whats happening with your cooling system:

I could be right or I could be wrong.

From your previous replies: (Current status)

1)The radiator fan is automatic (using coolant temp. sensor)
2) Temperature needle remains in the middle in the city driving.
3) Thermostat valve removed. (Suppose to cool the engine continuously, since you have removed the thermostat valve and there is no coolant stopage. But the question is does your radiator fan turns on when the coolant temperature goes up or when AC is running).

Whats happening????

Do you also know that CNG ignition temperature is 700 deg C which is a lot hight than petrol (455 deg C).

i) On motorway temperature needle moves upward form the middle with AC and 100-110km/h

(So, when you drive under AC load @110km/h with higher rpm engine gets hotter and you see the temp. needle moves upward. I do not know why your temp. needle moves upward, air through the front grill + the AC or radiator fan should keep the temperature in normal condition. May be your fan does not come on with AC, you have to check that).

ii) If speed is reduced to 90km/h or without AC temperature needle becomes normal.

(When you drop the speed to around 90km/h ofcourse with less rpm than 110km/h your coolant temperature drops because less heat generated by engine at low speed. Hence, you see the temperature needle comes to normal range.)

iii) In city driving temperature needle remains in the middle.

(In city driving usually you don't go at high speeds therefore engine temperature remains normal or in the middle.)

You have not mentioned that at 110km/h with AC how high the temperature needle goes. Does it stay above normal or it just keeps going near the red zone. Do you have two fans on the radiator??

All your symptoms looks okay to me. Its just the CNG burning hotter than petrol. But I would still double check if the radiator fan or AC fan if together are working fine when the temperature move up.

You can also try a coolant mixture of 70%water to 30% glycol due to the hot weather. It will help a little bit to bring the temperature down. Boiling point of the mixture will still be around 135.55 deg C

@digimanpk

I tried my best to understand the symptoms which @umans mentioned. Lets see what happens. I hope that his engine temperature problem will be solved. (H)

@FM01
if you are listening to me, help us out , wont you??

I tried

[umans]

@FM01
thanx for reply dear.
exactly!u r right.i have coolant in radiator with automatic fan and without thermostat valve.
yes maybe u r right.I'll check the fan with AC on.
one thing i want to mention again is,temperature remained normal in 1st 100kms traveling even on speed above 100.
if fan didn't work with AC then temperature should go up within 1st few kilometers.
when it was about to heat up the needle start going up gradually but i switched off AC and reduced speed so it came back to middle,i didn't let the needle go above 3/5 of gauge.

[digimanpk]

Yaar if the problem was with heat dissipation, 90 km\h speed also generate also alot of heat, so the car should heat up even at 90 km/h as well. This problem has following conditions

• it happens after 100 kms
• it happens at speed over 100 km/h
• it happens when A/C is on
• it happens only when engine is running constantly at high speed ( ie . on highways)

[digimanpk]

@Umans,

BTW which coolant you are using.??. It may be ur coolant as well, which looses its heat transfer property, when it becomes hot. Can you post a pic of the bottle used. Read the instruction on the coolant. Did you use a cheaper one??

[umans]

@digimanpk
"
- it happens after 100 kms
- it happens at speed over 100 km/h
- it happens when A/C is on
- it happens only when engine is running constantly at high speed ( ie . on highways)
"
exactly! u r right dear.
well about coolant!! yar mechenic ny hi dal dia tha,koi green color ki bottle thi.not a bottle it was a tin.
i think 100 ka tha maybe!!!
what to do yar:-(

[spectra]

@umans

My reply on the forum posted below was very relevant and to the point.

https://www.pakwheels.com/forumreply_az_TopicID!87594~ForumID!10~pw.html

[digimanpk]

@umans,

Yaar bara ajeeb sa problem hai.

For me,

If your radiator is not clean ( rusty etc). then chances are that your cooling system has a minor blockage, which only becomes a problem when engine is well heated and running at high speed. This blockage hampers the flow of coolant from your engine. Thus resulting in low heat dissipation.

Your coolant is not of a good quality. Agar woh tin tha to kitna bara tin tha. coz you know our mechanics , but unko inta hi pata hota hai jitna unko unkay ustad nay bataya hota hai. To just to be on the safe side. Tum coolant change kar kay dekh lo. Make sure you use a good quality one which is pre-mixed. Plus, Do not forget to flush your system before you put in new coolant. Flushing karna ka procedure tumhain internet say ya phir idhar hi aik thread hai us main mil jaye ga.

Hope that this will solve your problem.

One thing more that you can try is getting your cooling system cleaned by using a cleaner liquid. Check the local market for that. Do it before you put the coolant in. Aur phir batao.

I am really hoping kay tumhari car jaldi sehi hojaye. Insha Allah.

[umans]

@digmanpk
thanx bro for ur guidence.
i cleaned the radiator with pressure water at service station before filling new coolant.
which coolant u recommend?
i thing more,engie ki awaz zyada hy per iss problem sy pehly hi.mechenic said koi baring awaz dy raha hy, keep driving koi masla ni.
anyways!! i'm sick of it yar,i live in a hostal here in lahore so i havent have even a screwdriver to fix anything my self. fuel station waly coolant change ker dety hain?
anyone from lahore plz suggest some good workshops.
I'm thinking to buy Cd70 to avoid headache.
i always used to maintain my car and always tune it after 6,7k but still facing these problems.i'm realy fedup from this crap made by Susiki..................