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Old 5 Days Ago   #1
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Optimal Coolant TEMP TWINAIR PANDA 312 CNG

Hello to the forum.
Owner of Panda 312 CNG TA with 146k kms on the clock. Yesterday i bought a obd HUD because the car has no Coolant temp info. The car rolling with light load and 2k rpm the temp stays at about 72C. My experience says that it is not normal...anyone changed a thermostat so he can fill me up with some info? Thank you in advance.
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Old 5 Days Ago   #2
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Re: Optimal Coolant TEMP TWINAIR PANDA 312 CNG

No temperature gauge?
Really have they removed the temp gauge on the CNG moddel?
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Old 5 Days Ago   #3
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Re: Optimal Coolant TEMP TWINAIR PANDA 312 CNG

Not fitted.. or not working?

My diesels take a while to build heat..

I asked about temps in a thread on here

Apparently 60 To 80'c is 'normal'

The needle at middle of gauge covers this range
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Re: Optimal Coolant TEMP TWINAIR PANDA 312 CNG

Yeap there is no temp gauge. Where the temp gauge were now there is CNG volume info. I really don't understand this.


Apparently 60 To 80'c is 'normal' ... Really? Had several cars before , most of them were turbocharged. All of them working @90+ Celsius.
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Old 5 Days Ago   #5
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Re: Optimal Coolant TEMP TWINAIR PANDA 312 CNG

Commonrail diesels produce less excessive heat so for them 60 -80 degrees coolant temp is allright. I think CNG burns hotter than petrol (I know LPG does) so I'd expect temp between 80 - 100 degrees. What is the openingtemperature for the thermostat in a Twinair? My 100Hp is at 88 degrees and a 1.4 Tjet 80 degrees.

gr J
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Old 4 Days Ago   #6
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Re: Optimal Coolant TEMP TWINAIR PANDA 312 CNG

Hi.
I'd be hoping for 90-95c running temperature. If it is too cool there is less chance of contaminates boiling off from the oil as it too doesn't get hot enough. You'll see mayo (white sludge) on the oil filler cap and most likely on the inner surface of the cam cover. I wonder if that's the reason many TA's struggle on MOT emissions.
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Old 4 Days Ago   #7
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Quote Originally Posted by Ilias Tsiftsian View Post
Yeap there is no temp gauge. Where the temp gauge were now there is CNG volume info. I really don't understand this.


Apparently 60 To 80'c is 'normal' ... Really? Had several cars before , most of them were turbocharged. All of them working @90+ Celsius.
I understand it. The gauge shows ‘cold’ until the engine’s warm. But once warm the gauge (on my 4x4 diesel) doesn’t move: hot or cold weather, full load uphil or freewheeling down... it just stays in the middle showing ‘normal’ ( i suspect the middle bar of the gauge covers a span of temperatures). So, not being told the exact temperature , but instead being able to see how much CNG gas remains is probably more useful.
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Last edited by Herts Hillhopper; 4 Days Ago at 23:52.
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Old 4 Days Ago   #8
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Re: Optimal Coolant TEMP TWINAIR PANDA 312 CNG

Using the Torque app and an ELM327 dongle my 1.2 runs between 85-88c when warmed up. I'd prefer another 5c higher to be honest.
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Re: Optimal Coolant TEMP TWINAIR PANDA 312 CNG

Haha, yeah i think its more useful to know how much Cng is inside the tank. Still car in working conditions highway with 130-150 kph is @74-75C , on the other hand when im stuck in traffic works @85-87C. I really cannot understand this temperature. I am working with diesel engines as a technical manager in a Scania and Iveco workshop and i see temps around 90-95 degrees. Yes we are not talking about diesel engines , its a Cng/Petrol engine. Ι am going to search a little more about Cng and give further info. I would really like to know about the twinair petrol engine coolant temp though.
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Old 2 Days Ago   #10
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Re: Optimal Coolant TEMP TWINAIR PANDA 312 CNG

Thermostat not closing?

gr J
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Re: Optimal Coolant TEMP TWINAIR PANDA 312 CNG

Quote Originally Posted by Ilias Tsiftsian View Post
Haha, yeah i think its more useful to know how much Cng is inside the tank. Still car in working conditions highway with 130-150 kph is @74-75C , on the other hand when im stuck in traffic works @85-87C. I really cannot understand this temperature. I am working with diesel engines as a technical manager in a Scania and Iveco workshop and i see temps around 90-95 degrees. Yes we are not talking about diesel engines , its a Cng/Petrol engine. Ι am going to search a little more about Cng and give further info. I would really like to know about the twinair petrol engine coolant temp though.
I have the impression that the same will be the case with mine which is new.
This is because I feel that the air from the heat ventilators is quite cold when in the middle and going with 90-100km/h, while when in traffic I feel it is hotter.

I will have to connect the OBD to measure.
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Old 1 Hour Ago   #12
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Re: Optimal Coolant TEMP TWINAIR PANDA 312 CNG

Quote Originally Posted by Herts Hillhopper View Post
I understand it. The gauge shows ‘cold’ until the engine’s warm. But once warm the gauge (on my 4x4 diesel) doesn’t move: hot or cold weather, full load uphil or freewheeling down... it just stays in the middle showing ‘normal’ ( i suspect the middle bar of the gauge covers a span of temperatures). So, not being told the exact temperature , but instead being able to see how much CNG gas remains is probably more useful.

Let's hope the gauge isn't like the one on the Rover 75 that stayed in the N position between 75c & 105c
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