Auxfan turns OFF when A/C is ON

[ax30g]

Hi, Tsikoteers.

Need your help on my car.

Laging nagooverheat ang sasakyan ko. Pag naka-off ang aircon malaks ang fan pero once I-ON mo sya nmamatay yung auxfan which causes overheating.
At first akala ko fan ang salarin so yun pinalitan ko but still ganun pa din ang sira. Bagong overhaul yung sasakyan din.

Possible kaya na electrical ang problem? Baka meron jan same na experience before.

Thanks!

[dr. d]

Hi, Tsikoteers.

Need your help on my car.

Laging nagooverheat ang sasakyan ko. Pag naka-off ang aircon malaks ang fan pero once I-ON mo sya nmamatay yung auxfan which causes overheating.
At first akala ko fan ang salarin so yun pinalitan ko but still ganun pa din ang sira. Bagong overhaul yung sasakyan din.

Possible kaya na electrical ang problem? Baka meron jan same na experience before.

Thanks!

the electrical connections to the aux fan are probably incorrect.
a decent auto electrician-mechanic, should be able to correct the problem.

[kisshmet]

Hi, Tsikoteers.

Need your help on my car.

Laging nagooverheat ang sasakyan ko. Pag naka-off ang aircon malaks ang fan pero once I-ON mo sya nmamatay yung auxfan which causes overheating.
At first akala ko fan ang salarin so yun pinalitan ko but still ganun pa din ang sira. Bagong overhaul yung sasakyan din.

Possible kaya na electrical ang problem? Baka meron jan same na experience before.

Thanks!

Inverted logic ang current set up ng sasakyan mo

Sent from my GT-P3110 using Tsikot Forums mobile app

[ax30g]

Inverted logic ang current set up ng sasakyan mo

Sent from my GT-P3110 using Tsikot Forums mobile app

Is this something that could be fixed in a regular talyer?

[kisshmet]

^It can be fixed by a competent electrician..if the regular talyer have a knowledgable electrician..then let them fix your problem

Sent from my GT-P3110 using Tsikot Forums mobile app

[ax30g]

Is this something that could be fixed in a regular talyer?

Can you give me a background on inverted logic?

All I know is the moment I bought the aux fan, sinaksak ko lang yung source ng kuyente. Never ko nmn ginalaw yung connections sa old fan ko bigla nalang nagoverheat. I've been receiving suggestions like check your thermostat, your relay and first time marinig yung inverted logic.

Sorry for being such a NOOB on this.

BTW, my car is a ford escape.

[oj88]

What is the make/model/year of the car?

It could be any of the fan control relays,

On my 08 Civic FD, it uses three relays to control the two radiator/AC fan blowers.... two are SPST and one is SPDT.

It has three states.

1. Off - All three relays are off
2. Low Speed (feedback logic based on ECT) - One relay is active and the two fan motors are effectively connected in series (each fan is running at approx. 6V DC)
3. High Speed (feedback logic based on whether the A/C compressor is engaged) - All three relays are active and both fans each have a 12V supply

These are all controlled by the ECM. If the problem is not the relay, check the wiring for any cuts or damage done while the car was being serviced. It's unlikely but if all else checks out, the ECM could be at fault.

[ax30g]

Had my aux fan checked yesterday. Sira na dw yung module kaya they suggested na iderecho nalang sa fan yung supply ng kuryente. Safe ba yun?
dba masisira kaagad yung fan ko? Parang di ako convinced sa sinabi ng electrician since 4 mos palang yung bago kong fan.

Is it safe na iderecho nalang sa sa fan yung supply ng kuryente?

TIA

[jick.cejoco]

The question had been raised, but I'll ask too.


What is the
Make
Model
Production date
Mileage




And what was done prior to the symptom appearing?

[oj88]

Had my aux fan checked yesterday. Sira na dw yung module kaya they suggested na iderecho nalang sa fan yung supply ng kuryente. Safe ba yun?
dba masisira kaagad yung fan ko? Parang di ako convinced sa sinabi ng electrician since 4 mos palang yung bago kong fan.

Is it safe na iderecho nalang sa sa fan yung supply ng kuryente?

TIA

Short answer: Trabahong tamad yan.

Long answer: The fan won't last long if it's operating 100% of the time. It just needs further troubleshooting. It is more likely that it's a relay, fuse or wiring issue. Though, not impossible, it's seldom an ECU problem.

[benchman]

Short answer: Trabahong tamad yan.

Long answer: The fan won't last long if it's operating 100% of the time. It just needs further troubleshooting. It is more likely that it's a relay, fuse or wiring issue. Though, not impossible, it's seldom an ECU problem.

+1
that's the typical mekanikong "i-bypass na lang natin."
i'll find another shop.

[ax30g]

The question had been raised, but I'll ask too.


What is the
Make
Model
Production date
Mileage




And what was done prior to the symptom appearing?

its a 2005 escape 2.3XLS. mileage 140k km.

Wala nmn dude the fan just stopped running. nagoverheat na sya dati so we changed the fan and water pump. akala ko ok na pero same thing humihinto pa din yung fan niya.

Is it possible to test kung nagwowork yung module even if tinanggal sya sa fan?

[ax30g]

+1
that's the typical mekanikong "i-bypass na lang natin."
i'll find another shop.

I agree. And to think na almost bago yung aux fan (4mos old)
Wala kasi akong alam na magaling na mekaniko/electrician sa Rizal area or kahit nearby cities.

[ax30g]

Short answer: Trabahong tamad yan.

Long answer: The fan won't last long if it's operating 100% of the time. It just needs further troubleshooting. It is more likely that it's a relay, fuse or wiring issue. Though, not impossible, it's seldom an ECU problem.

I agree. problem is wala akong alam na maayos na shop dit sa Rizal area. baka may alam kayo? TIA

[benchman]

I agree. And to think na almost bago yung aux fan (4mos old)
Wala kasi akong alam na magaling na mekaniko/electrician sa Rizal area or kahit nearby cities.

dalhin mo kay rey's electrical(marikina, along mayor gil fernando ave.)

[ax30g]

dalhin mo kay rey's electrical(marikina, along mayor gil fernando ave.)

I've heard of this shop. ito ba yung sa may likod ng Mcdo Marcos Highway? Meron na din nagrecommend sakin dito.
Anyway, cge ill have this checked. Thanks!

[benchman]

I've heard of this shop. ito ba yung sa may likod ng Mcdo Marcos Highway? Meron na din nagrecommend sakin dito.
Anyway, cge ill have this checked. Thanks!

malayo sya sa mcdo bro.

https://www.google.com.ph/maps/place....1021378?hl=en

[dr. d]

Had my aux fan checked yesterday. Sira na dw yung module kaya they suggested na iderecho nalang sa fan yung supply ng kuryente. Safe ba yun?
dba masisira kaagad yung fan ko? Parang di ako convinced sa sinabi ng electrician since 4 mos palang yung bago kong fan.

Is it safe na iderecho nalang sa sa fan yung supply ng kuryente?

TIA

what "module" are we talking about?

[oj88]

what "module" are we talking about?

It's presumed to be the ECM. It's always the same exact spiel from mechanics who can't figure out what's wrong. It's just easier for them to blame it on the computer box.

[dr. d]

It's presumed to be the ECM. It's always the same exact spiel from mechanics who can't figure out what's wrong. It's just easier for them to blame it on the computer box.

so if they replace the ECM, "it still won't run, because it was not the part at fault in the first place."
heh heh.