Questions tagged [temperature]

Use for questions where temperature is a significant feature – e.g., problems that occur only at a specific temperature.

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9
votes
1answer
644 views

What effect will replacing manifolds with headers have on oil temperature?

I drive a big heavy car (2011 Mercedes E63, somewhere around 4200lbs) that I take to the track. It has the NA 6.3L engine (M156) with no modifications. I struggle with oil temperature issues on hot ...
4
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3answers
2k views

Audi A4 1.6 2000 Coolant level sensor flashing

I have a problem with the coolant level sensor. After a minute of driving the temperature sensor on the car starts flashing and also alerts with beeping. Of course the coolant tank level is normal. ...
3
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1answer
3k views

What sort of temperatures do exhaust manifolds on large engines reach after normal operation?

The main car that I was wondering for was a Nissan Altima 2.5l 4dr. 2007 with 138,000 Miles
4
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1answer
1k views

Suzuki Swift running cold - replaced thermostat and the issue persists

My 1994 Suzuki Swift Sedan 1.3L with 280,0000 miles has been running cold for a while now. I can't get my self warm with the heater in the mornings when there is frost. It surges climbing up a ...
2
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2answers
86 views

Is it possible for the ECM to even attempt hitting the stoichiometric point if the pre-cat O2 sensor has failed?

If the pre-cat O2 sensor fails, the ECM is no longer able to determine whether the mixture is rich or lean. A pre-cat O2 sensor cannot fail silently, the CEL (check-engine light) will switch on. I am ...
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2answers
1k views

Safe Vehicle Operating Temperature while towing

I have a F-350 Dually that is capable of towing 16,000lbs. I regularly pull 14-15K lbs. I have a programmer that gives me a digital display of both my EOT and my ECT. What would you say is the ...
5
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1answer
92 views

Tire showing low pressure after few KMs of ride

I am having this question from long back. I am using N2 for my tyres. After a few KM (say some 3-4 KMs), measuring the PSI, shows a less pressure. Whether, due to the increase in the temperature in ...
4
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1answer
218 views

Inside temperature reading 13 degrees lower than actual outside temperature - what could be the problem?

I have a 2006 Nissan Sentra. Its inside temp is reading 58 degrees when it is actually 71 degrees outside. What could be the problem? Also, I just changed the thermostat today.
4
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1answer
756 views

Thermocouple vs Thermostat

Why don't modern engines use a thermocouple (electronic temperature sensor) instead of a (wax element) thermostat?
3
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1answer
2k views

Temperature gauge between half and 3 quarters?

I have a '98 Oldsmobile Intrigue and after about 20 minutes of driving the temperature gauge is between one half and 3 quarters. I was wondering if is this a problem? The coolant is at the right level,...
3
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1answer
56k views

How often to start/drive a vehicle to keep it healthy?

In order to keep a gasoline-powered vehicle healthy, how often does it need to be started or driven? Please specify if it actually needs to be driven, or if just starting it and letting it run is ...
4
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0answers
1k views

Peugeot 207 convertible: “impossible to move roof: outside temperature too low”

My Peugeot 207 convertible from 2007 shows an error when trying to lower the roof. "Impossible to move roof: outside temperature too low" According to the manual it should be functioning down to -15 ...
3
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2answers
4k views

Effects of anti-freeze concentration on engine temperature

I am curious as to how useful the engine temperature sensor actually is. It tells you the coolants temperature obviously, but I have read that the engine actually operates hotter than the coolant. For ...
2
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1answer
1k views

Temperature of coolant before and after radiator [closed]

I am doing an analysis project on radiators so I need to know the input temperature. At what average temperature does the coolant enter radiator (not thermostat opening temperature) during normal ...
4
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1answer
2k views

Engine Temperature from OBD data

Engine Coolant temperature is obtained from OBD. But there is no PID to get engine temperature. Obviously, they are related, rather proportional I guess. But can there be a case where my engine is ...
15
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3answers
104k views

How is “outside temperature” measured in a car?

Most cars have a display for outside temperature, and I have been wondering how it was measured... In other words, where exactly is the sensor and how reliable is it?
6
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1answer
833 views

why is it not good to stall a cold engine

I've always known that you cannot stall (regular turn off by turning key (i'm not sure how that's called in english)) an engine if it is not yet reached it's work temperature. For example, if i go to ...
5
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2answers
4k views

2006 Jeep Commander - heat problems

My heater blows cold air at idle. and warms when driving. my temperature gauge goes up when the air is blowing. What could it be?
9
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3answers
71k views

Does revving a car when cold make it warm up faster?

As winter comes along, I've always thought that revving the car would make it warm up faster, so the heating works better to clear the icy/steamed up windows. Does revving my car at idle to about 2-...
6
votes
2answers
7k views

How exactly does an increase in engine temperature cause a car to breakdown?

I have an engine temperature gauge on the dashboard of my car (as most people do), but if for some reason the engine temperature is caused to increase (due to a lack of cooling or what have you), the ...
4
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3answers
2k views

What causes more gas consumption - Idling with AC or Heat?

So I have begun doing some research on the effects of idling. So my question is, does idling with the AC or heater on affect how much gas is given off? If possible, please give the percent of extra ...
4
votes
1answer
4k views

Engine temperature low when it's cold outside

My engine temperature is low when it's cold outside. I'll drive for 30 min, and the engine temperature will be at the quarter mark. If it's moderately cold outside, the temperature will eventually ...
2
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2answers
4k views

Temperature gauge stays in middle even when engine overheats

I have a 2005 Ford Escape. It overheats once in a while up to the point that you can physically see coolant in the reservoir tank boiling. My main concern is that the temperature gauge on the car ...
2
votes
1answer
696 views

06 Pontiac Torrent 3.8L V-6 temp gauge stopped working and cooling fans started running constantly when engine is running

06 Torrent V6 the temp gauge stopped working and the cooling fans run all the time when engine is running. I checked the relays and sensor plugs and they were fine, so I replaced the coolant temp ...
3
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3answers
22k views

Outside temperature displays wrong values in Peugeot 207

For some weeks now my mother-in-law's Peugeot 207 (2009 model I think) shows a wrong outside temperature. While the actual outdoor temperature has been somewhere around freezing (0°C) the temperature ...
0
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1answer
3k views

Where is the engine temperature sensor located on a Mazda 323?

2003 Mazda 323 Astina, 1.8l, I am trying to figure where the engine temperature sensor is located in the car. How can I tell if it's faulty? I am only guessing it is because the car overheats, the ...
0
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1answer
51 views

Temerature gauge goes to zero

Temperature gauge goes to zero when the engine is started. Very warm air comes from vents. AC nor heater are on. Outside temperature is 80. Is it safe to drive three miles to dealer?
2
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1answer
23k views

How Much Deviation from Ambient Temp is Normal for IAT sensors?

I've noticed that my air intake temp sensor gives the correct ambient temp reading in the morning when the engine is cold, but that it typically is giving me readings between 7 to 17 degrees Celsius ...

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