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What Does Your Coolant Gauge Read? - Car Talk (1) - Nairaland

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Re: What Does Your Coolant Gauge Read? by Siena(m): 10:17pm On Nov 24, 2012
hollas2jnr: Oga Siena.. here's the photo pls.

As I suspected, it's your CTS (Coolant Temperature Switch). It's faulty, and causing your car to over fuel when the engine's hot. Get a replacement, and your engine will be fine. And please, buy a NEW one, not used. CTS is something that fails often, so a used one is a waste of time. And it must be a replacement for the same engine as yours.
Re: What Does Your Coolant Gauge Read? by hollas2jnr(m): 4:30pm On Nov 26, 2012
Thanks a whole lot Mr Siena... The engine's been good after I replaced it with a new CTS. And pls mind not my trouble o, another issue I have is that a 'HOLD' light keeps blinking on my dashboard even after I changed both the transmission fluid and filter but the transmission's been doing fine except that the car jacks a bit sometimes when just accelerating.
Re: What Does Your Coolant Gauge Read? by vet707(m): 7:56am On Nov 28, 2012
Bros, I'm always happy whenever I see ur posts regarding solvin many car owners problems. Pls know dat many people are ever grateful 2 U̶̲̥̅̊. Pls I need ur sincere advice on what kind of SUV dat I can buy dat will nt b more dan 1.5M & will be very fuel efficient, cheap 2 maintain & can survive rough terrain cos I reside where d roads are d worst in †ђξ whole Nigeria. Very eager 2 hear from U̶̲̥̅̊ sir.
Re: What Does Your Coolant Gauge Read? by captalex: 1:48pm On Nov 28, 2012
hollas2jnr: Thanks a whole lot Mr Siena... The engine's been good after I replaced it with a new CTS. And pls mind not my trouble o, another issue I have is that a 'HOLD' light keeps blinking on my dashboard even after I changed both the transmission fluid and filter but the transmission's been doing fine except that the car jacks a bit sometimes when just accelerating.

I experience this sometimes too, but as far as it doesn't make the car go off while driving, the car is fine.It's just changing gears.
Re: What Does Your Coolant Gauge Read? by captalex: 1:49pm On Nov 28, 2012
vet707: Bros, I'm always happy whenever I see ur posts regarding solvin many car owners problems. Pls know dat many people are ever grateful 2 U̶̲̥̅̊. Pls I need ur sincere advice on what kind of SUV dat I can buy dat will nt b more dan 1.5M & will be very fuel efficient, cheap 2 maintain & can survive rough terrain cos I reside where d roads are d worst in †ђξ whole Nigeria. Very eager 2 hear from U̶̲̥̅̊ sir.

Bro have a look at the toyota highlander v6(4WD),It's a very durable machine.
Re: What Does Your Coolant Gauge Read? by Siena(m): 2:17pm On Nov 28, 2012
vet707: Bros, I'm always happy whenever I see ur posts regarding solvin many car owners problems. Pls know dat many people are ever grateful 2 U̶̲̥̅̊. Pls I need ur sincere advice on what kind of SUV dat I can buy dat will nt b more dan 1.5M & will be very fuel efficient, cheap 2 maintain & can survive rough terrain cos I reside where d roads are d worst in †ђξ whole Nigeria. Very eager 2 hear from U̶̲̥̅̊ sir.

Your choices can be split into two groups:

01) Functional, very tough but not very nice-looking.
02) Attractive and modern, but a bit fragile on bad roads.

For the first group, I'd list these for your budget and running costs:

a) 1996 Toyota Land Cruiser.
b) 1998 Toyota Forerunner.
c) 1988 Landrover Defender.

For the second group, I'd list these:

a) 2001 Honda CR-V.
b) 2001 Toyota RAV-4.
c) 2002 Suzuki Vitara.
Re: What Does Your Coolant Gauge Read? by vet707(m): 6:38pm On Nov 28, 2012
Your choices can be split into two groups:

01) Functional, very tough but not very nice-looking.
02) Attractive and modern, but a bit fragile on bad roads.

For the first group, I'd list these for your budget and running costs:

a) 1996 Toyota Land Cruiser.
b) 1998 Toyota Forerunner.
c) 1988 Landrover Defender.

For the second group, I'd list these:

a) 2001 Honda CR-V.
b) 2001 Toyota RAV-4.
c) 2002 Suzuki Vitara.

Thanks a lot for d info.pls how fuel efficient is Nissan xterra cos sum1 here is offering me dis ride @ a relatively fair price. Pls am awaitin ur response.
Re: What Does Your Coolant Gauge Read? by hollas2jnr(m): 10:26pm On Nov 28, 2012
captalex:

I experience this sometimes too, but as far as it doesn't make the car go off while driving, the car is fine.It's just changing gears.
Thanks a lot Captalex. Any idea on the blinking HOLD light on the dashboard?
Re: What Does Your Coolant Gauge Read? by hollas2jnr(m): 10:37pm On Nov 28, 2012
captalex:

I experience this sometimes too, but as far as it doesn't make the car go off while driving, the car is fine.It's just changing gears.
Thanks a lot Captalex. Any idea on the blinking HOLD light on the dashboard?
Re: What Does Your Coolant Gauge Read? by skyfall: 9:01pm On Nov 29, 2012
Siena: And your fan operating constantly with the engine running, is not ideal.

Can this be true for all cars? I have a 2002 Nissan Pathfinder with the VQ35DE engine. The fan is connected directly to the engine and its belt drives the AC compressor too.

The fan is thus always on even though I hear a click and notice a slight increase in speed when I turn on the AC.
Re: What Does Your Coolant Gauge Read? by Siena(m): 9:25pm On Nov 29, 2012
skyfall: Can this be true for all cars? I have a 2002 Nissan Pathfinder with the VQ35DE engine. The fan is connected directly to the engine and its belt drives the AC compressor too.

The fan is thus always on even though I hear a click and notice a slight increase in speed when I turn on the AC.

True for ALL engines. Your engine has a mechanical fan, but it's not always active. It has a viscous clutch built into the hub, so when cold, it freewheels. When hot, the viscous fluid becomes solid, and locks up.

The click you hear when you turn on the aircon is the compressor's magnetic clutch engaging. The compressor loads up the engine when engaged, so the idle control will raise the idle rpm threshold, resulting in the slight increase in engine speed you notice.
Re: What Does Your Coolant Gauge Read? by skyfall: 9:02pm On Dec 01, 2012
Make: Nissan
Model: Pathfinder
Year: 2002
Engine size: 3.5l
Engine output (if known): 240hp when new (LOL)
Transmission type: Auto
Drive configuration: Part-time 4WD
Aircon: Yes

Aircon on:

Coolant temperature stationary: about 45% (no lettering at all on gauge)
Coolant temperature in dense traffic: 55%
Coolant temperature at highway speeds: 45%

Aircon off:

Coolant temperature stationary: 45%
Coolant temperature in dense traffic: 50%
Coolant temperature at highway speeds: 45%

Coolant + Water (I use the green coolant and the direction on the bottle says to empty the 1-liter (i think) bottle into the radiator and then fill with water)
Re: What Does Your Coolant Gauge Read? by captalex: 1:37am On Dec 02, 2012
hollas2jnr:
Thanks a lot Captalex. Any idea on the blinking HOLD light on the dashboard?

No idea i'm afraid, would try and find out more though.
 
Re: What Does Your Coolant Gauge Read? by ngorluv: 2:50am On Dec 27, 2012
@siena thanx for this thread,its just wat I need at d moment...pls mr siena,my mazda tribute just started flashing d coolant indicator at d dash board a month ago...I av added coolant to it,yet d indicator keeps flashing.the temperature guage still stays at d middle wen d car is started...am so confused.my coleagues at work say I should get the thermostat removed dat it would stop d blinking and if not,if I venture taking d car for a long distant ride that I will end up burning the gaskette....pls wat do u think I should do...will rmoving d thermostat solve d. prloblem...pls I need ur response urgently cos am to resume work next week and start using d car after my vacation
Re: What Does Your Coolant Gauge Read? by Siena(m): 3:13am On Dec 27, 2012
The Mazda Tribute also has a coolant lever sender. Please confirm the following:

* When the coolant gauge indicates halfway, is this all the time? Even when you start the engine from cold?
* Are you losing any coolant, do you have to constantly top it up?


Under no circumstance should you remove the thermostat! If that's what your "mechanic" insists on doing, then please take your car to a dealer. Roadside or non-qualified "mechanics" will destroy your car!!
Re: What Does Your Coolant Gauge Read? by elviszzz: 10:42am On Dec 28, 2012
Make: Audi A6.
Model: Quattro.
Year: 1999.
Engine size: 2.8 V6 30V.
Engine output: 200 bhp.
Transmission type: 5-speed Tiptronic.
Drive configuration: AWD.
Aircon: Yes.

Aircon on:

Coolant temperature stationary: Midway / 90 degrees celsius.
Coolant temperature in dense traffic: Midway / 90 degrees celsius.
Coolant temperature at highway speeds: Midway /75 degrees.

Aircon off:

Coolant temperature stationary: Midway / 90 degrees.
Coolant temperature in dense traffic: Midway / 90 degree.
Coolant temperature at highway speeds: 45 degrees.

Coolant / water, I dnt use coolant

I use a mechanical fan for d engine n electrical fan for d ac
Re: What Does Your Coolant Gauge Read? by Siena(m): 11:10am On Dec 28, 2012
elviszzz: Make: Audi A6.
Model: Quattro.
Year: 1999.
Engine size: 2.8 V6 30V.
Engine output: 200 bhp.
Transmission type: 5-speed Tiptronic.
Drive configuration: AWD.
Aircon: Yes.

Aircon on:

Coolant temperature at highway speeds: Midway /75 degrees.

Aircon off:

Coolant temperature at highway speeds: 45 degrees.

Coolant / water, I dnt use coolant

Your thermostat has been removed, as it's overcooling at highway speeds. I would strongly advice you get it replaced - if your mechanic has discarded it, then you need to buy a replacement, otherwise your engine will sludge up.

And unless you want your engine to corrode from the inside out, I would also suggest you do NOT run your engine on plain water. You need to run G12 or higher. The 2,8 30V engine in your Audi A6 Quattro is cast-iron, with light alloy cylinder heads. Running plain water, or the wrong coolant will cause a reaction between both metals, and the chances of cylinder head gasket failure is high.

Your engine output isn't 200 bhp. North American cars put out 190 bhp, with European ones producing 193.
Re: What Does Your Coolant Gauge Read? by elviszzz: 1:26pm On Dec 28, 2012
Siena:

Your thermostat has been removed, as it's overcooling at highway speeds. I would strongly advice you get it replaced - if your mechanic has discarded it, then you need to buy a replacement, otherwise your engine will sludge up.

And unless you want your engine to corrode from the inside out, I would also suggest you do NOT run your engine on plain water. You need to run G12 or higher. The 2,8 30V engine in your Audi A6 Quattro is cast-iron, with light alloy cylinder heads. Running plain water, or the wrong coolant will cause a reaction between both metals, and the chances of cylinder head gasket failure is high.

Your engine output isn't 200 bhp. North American cars put out 190 bhp, with European ones producing 193.

Your right Sienna,thermostat was removed to allow the ac fan work directly just to avoid overheating courtesy of my mechanic. How do I use coolant to have a 50-50 mixture? Cos there is always water in my radiator,do I flush or what?
Re: What Does Your Coolant Gauge Read? by Siena(m): 1:47pm On Dec 28, 2012
elviszzz: Your right Sienna,thermostat was removed to allow the ac fan work directly just to avoid overheating courtesy of my mechanic. How do I use coolant to have a 50-50 mixture? Cos there is always water in my radiator,do I flush or what?

*Sigh*

Removing the thermostat is BAD practice, I can't understand why you guys are allowing your "mechanics" to continue destroying your cars, despite all the threads on here. Overheating is caused by other factors, removing the thermostat merely masks an inherent problem.

Removing your thermostat will NOT make your fan run constantly. The fan is controlled electronically, your thermostat is purely mechanical. Your aircon fan is controlled by the Climate Control Module, which is integral with the digital Control Panel. Your quack has bypassed this, BAD move. You need to revert your car back to factory spec, before irreversible damage occurs.

You need to drain your cooling system completely, then achieve a 50 / 50 water / coolant mix in a 5-litre bucket, before filling your cooling system with it. And I can't over stress the need to use of G12 / G12+ or the equivalent.
Re: What Does Your Coolant Gauge Read? by Imanuelle(m): 9:45pm On Dec 28, 2012
Oga siena, gud evening,
Pls any idea on how much a new toyota carina E's engine costs?
Tnx
Re: What Does Your Coolant Gauge Read? by Siena(m): 9:55pm On Dec 28, 2012
Imanuelle: Oga siena, gud evening,
Pls any idea on how much a new toyota carina E's engine costs?
Tnx

Hello bro.

What model year, and engine size?
Re: What Does Your Coolant Gauge Read? by yungboss(m): 11:44pm On Dec 28, 2012
Siena:

Hello bro.

What model year, and engine size?
brossss, sorry for going off topic o, pls help me on my bmw issue on my thread thanx a mill
Re: What Does Your Coolant Gauge Read? by sultaan(m): 12:17am On Dec 29, 2012
ngorluv: @siena thanx for this thread,its just wat I need at d moment...pls mr siena,my mazda tribute just started flashing d coolant indicator at d dash board a month ago...I av added coolant to it,yet d indicator keeps flashing.the temperature guage still stays at d middle wen d car is started...am so confused.my coleagues at work say I should get the thermostat removed dat it would stop d blinking and if not,if I venture taking d car for a long distant ride that I will end up burning the gaskette....pls wat do u think I should do...will rmoving d thermostat solve d. prloblem...pls I need ur response urgently cos am to resume work next week and start using d car after my vacation

If you fill it check your reservoir level, there is a sensor in ther to warn you its low it might be stuck or actually low.
Reservoir is on the passenger side of engine as in pic.

Re: What Does Your Coolant Gauge Read? by elviszzz: 1:03am On Dec 29, 2012
Siena:

*Sigh*

Removing the thermostat is BAD practice, I can't understand why you guys are allowing your "mechanics" to continue destroying your cars, despite all the threads on here. Overheating is caused by other factors, removing the thermostat merely masks an inherent problem.

Removing your thermostat will NOT make your fan run constantly. The fan is controlled electronically, your thermostat is purely mechanical. Your aircon fan is controlled by the Climate Control Module, which is integral with the digital Control Panel. Your quack has bypassed this, BAD move. You need to revert your car back to factory spec, before irreversible damage occurs.



You need to drain your cooling system completely, then achieve a 50 / 50 water / coolant mix in a 5-litre bucket, before filling your cooling system with it. And I can't over stress the need to use of G12 / G12+ or the equivalent.

Thanks Siena.
Re: What Does Your Coolant Gauge Read? by Piyke: 1:49pm On Dec 29, 2012
Siena, Abeg what locally available coolant would u recommend? I drive a 2003 EOD and I've been topping up coolant ever since I bot the car when I notice the level is low. This time I want to drain everything n pour in fresh stuff. Been using abro brand made in US, is it a good one? Especially when I have never seen OEM Honda coolant in naija.

*I 've done about 30k miles since I bought the car*
Re: What Does Your Coolant Gauge Read? by jum33: 11:45pm On Dec 29, 2012
Hello oga siena,
I bought my primera P11 model with the thermostat removed and the engine is consuming fuel like hell.
All my effort to get mechanic to replace does nt yield fruit( becos the mechanic has to readjust the radiator fan to factory defaults after reconnecting the thermostat) my mechanics are not skilled to perform that.
Please can you recommend a good mechanic that can do that for me.My location is Lagos ,email is jummy4life2020
Re: What Does Your Coolant Gauge Read? by Siena(m): 12:26am On Dec 30, 2012
jum33: Hello oga siena,
I bought my primera P11 model with the thermostat removed and the engine is consuming fuel like hell.
All my effort to get mechanic to replace does nt yield fruit( becos the mechanic has to readjust the radiator fan to factory defaults after reconnecting the thermostat) my mechanics are not skilled to perform that.
Please can you recommend a good mechanic that can do that for me.My location is Lagos ,email is jummy4life2020

I think you're confusing the thermostat, with the thermo time switch. With the thermostat, there's nothing to connect. It's purely mechanical, the thermo time switch controls the fan, so I can't see what's so difficult for your "mechanic" to revert to factory spec.

His attitude alone should tell you you're paying money to the wrong sort of person. Get your car to a Nissan dealer, who at least knows one end of a spanner from the other. I have no idea whom to recommend, as I'm not resident in Nigeria.
Re: What Does Your Coolant Gauge Read? by adeniyisavage(m): 11:10am On Dec 30, 2012
Toyota.carina E. 1996. 118hp. Petrol. 5 speed manual transmission. Fwd. No aircon. Temp gauge 1/2 always. Come rain come shine day or night short journey or tripping to ilorin
Re: What Does Your Coolant Gauge Read? by jum33: 4:42pm On Dec 30, 2012
Siena:

I think you're confusing the thermostat, with the thermo time switch. With the thermostat, there's nothing to connect. It's purely mechanical, the thermo time switch controls the fan, so I can't see what's so difficult for your "mechanic" to revert to factory spec.

His attitude alone should tell you you're paying money to the wrong sort of person. Get your car to a Nissan dealer, who at least knows one end of a spanner from the other. I have no idea whom to recommend, as I'm not resident in Nigeria.

Oga Siena,
So what you are saying in plain language is that,if the thermostat is fixed correctly the radiator fan will go back to default.
Re: What Does Your Coolant Gauge Read? by Siena(m): 3:09pm On Dec 31, 2012
jum33:
Oga Siena,
So what you are saying in plain language is that,if the thermostat is fixed correctly the radiator fan will go back to default.

No, I'm not saying that at all.

The thermostat doesn't control the cooling fan. The fan is controlled by the thermo time switch, which your mechanic has bypassed. It's usually fitted to the bottom of the radiator, coolant pipe elbow, or coolant passage in the cylinder head. On some cars, the cooling fan is controlled by the ECU via the CTS (Coolant Temperature Sensor).

So your mechanic needs to go back to basics, if he doesn't know where to start, then he has no business working on anything that has an engine. I would strongly advice you take your car elsewhere.
Re: What Does Your Coolant Gauge Read? by BlackMamba2: 4:19pm On Dec 31, 2012
Make:Honda Accord
Model: 2000
Year: 2000

Engine . Auto transmission.
Aircon:No.

Temperature gauge does not move an inch! water does not dry from radiator for like 3mnths running. Both fans working well.

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