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New Proton Persona VVT 2016 - Official Thread V2, Its New, Its Refined, Its Safe ⭐⭐⭐⭐⭐
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voscar
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 Mar 3 2017, 06:00 PM
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QUOTE(LedZepp67 @ Mar 3 2017, 02:20 PM) I'd go with this too. IMHO, pointless pushing a car that's not really meant to be taken past its 'comfort zone'. Stats & figures don't mean anything especially with a stock 'family-friendly' sedan. Each to his own, I guess.  Be Safe & Stay Safe well said, but nowadays younger generation always tends to drive faster and faster, perhaps one reason is modern car's higher torque and hp, also the thought of there's abs, airbag, vsc, ebd protecting me... could u imagine lady colleague in my office used to driving 140-150km/h on her way to damansara? those are not even straight highway for speeding (ala Elite, NS highway), but now she already changed after met some accident back then. |
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voscar
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Mar 11 2017, 12:17 PM
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QUOTE(firegal @ Mar 11 2017, 12:03 PM) so you guys just treat it as "normal" case for the temp gauge or did you guys check with SC before? I will asked them during coming 10k service. My wild guess is also because the thermostat that using can't react fast enough for this? My main concern is this will impact the fc as ecu might treat low temp and burn more fuel to keep the temp at nominal? There are 2 thermostat, mechanical thermostat controlling the water flow into engine, and electrical thermo sensor controlling the radiator fan spin on off... I believe on highway the thermo sensor already shut off the radiator fan when Aircond cut off, but the mechanical thermostat might having lower temp, says 71-82'c， it still allowing water flow, so you observe lower temp during highway drive. |
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voscar
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Mar 11 2017, 08:06 PM
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QUOTE(firegal @ Mar 11 2017, 03:48 PM) I think a car only have 1 thermostat. =p. Sensor and thermostat are different. Sensor read the coolant temp and send info to ECU and did some control over fuel injection or fan Etc. if the temp gauge show not norminal, so it burn more fuel to keep engine hot? It seen the thermostat have not do it jobs, I did have xp with my old car before, after I remove a thermostat, my temp gauge can still reach nominal temp, when I speed up, the temp gauge will be low again. I guess ECU also not did it job to compensate that? Hmmm. Confusing There's always a tolerance lower value on the thermostat, not sure about new persona, I have read some where the thermostat of campro engine opening is about 82'c.. optimal coolant temp is 90'c, but you can't wait until 90'c only letting the water flow to radiator, it would be too late. After thermostat allowing water free flowing, it's the job of radiator, fan, and airflow to cool down the water... Of coz those are not constant variable, thus the coolant temp always varying 82-95 during normal driving... |
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voscar
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Mar 11 2017, 08:13 PM
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QUOTE(oldgoat @ Mar 11 2017, 02:49 PM) Good feedback. My long held theory is that the strong wind buffing the radiator in particular and the engine block in general is more efficient in dispersing the heat generated thus causing the temp bar to drop. Maybe the engine temp tolerance range is within those 2 to 3 bars thus nothing to worry about? Maybe the temp gauge just indicate the radiator temp and not about the internal combustion chamber which should be controlled by spark plugs? As an owner, I too would like to know more about the temp gauge. No, the car's temp gauge is indicating the water temp, not internal combustion chamber.. I think the temp of internal combustion chamber would be over 300'c.. Another add-on temp gauge people usually added is oil temp, for this you can notice the oil temp usually varying 80-130'c on extreme revving case. But 130'c is still not concern as the oil temp could maxed at 170'c on gauge. |
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voscar
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Mar 12 2017, 10:47 AM
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QUOTE(firegal @ Mar 12 2017, 10:39 AM) Yes agree. every items for measurement have it tolerance range. Usually engine operation temp should be at around 90-100C. Every thermostat should have marking stated the temp value where it start to open. Usually 75-85C if not mistaken. the problem now is why can't they set the 2 bar to 3 bar if really the temp is in acceptance case? It should have a standard that from what reading to what reading is nominal value and this standard should apply to all the car outside the market I guess? Seriously this really worry me after I reading below. Just wanna collect more info and reason to question the SC. Else they won't layan u From Internet The thermostat is there primarily to help the engine warm up in the morning. As we discussed in a previous article, the engine is designed to operate at it's operating temperature. Most engine wear occurs when the engine is cold, once it's warmed up there is very little wear in a healthy engine. Thus, we definitely want to run a thermostat to allow the engine to warm up as quickly as possible until it reaches our desired and designed operating temperature. http://www.tuneruniversity.com/blog/2012/0...-the-advantage/The keyword is "warm up" ... That concern is mainly from cooler climate country.. I'm not saying we don't need warm up to reduce engine wear, but I guess once the temp exceeding 70'c, it should be safe. Personally I prefer temp gauge varying to indicate the actual temp instead of pointing just one location for safe temp variation. But that's different from individual. Of coz you can ask proton staff on that, but I guess their answer would be no worries, no problem, as the car temp gauge was designed to be like that, nothing an ordinary SC can modify on it. |
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