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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Water temperature sensor location

I'm installing a water temperature gauge and I'm curious which is the best location for the sensor; in the radiator inlet hose or outlet hose? The inlet hose will give the hottest reading as the ...
KFP's user avatar
  • 173
9 votes
1 answer
745 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 ...
RJStanford's user avatar
2 votes
0 answers
115 views

Fixed exhaust leak, running hotter now

Yeah, it's the Solstice again. I just replaced a v-band clamp between my turbo and the cat. The engine runs a lot smoother now - go figure - but it's running quite a bit warmer. Before I recently ...
3Dave's user avatar
  • 3,149
4 votes
2 answers
45k views

What could cause the engine temperature gauge and AC to fail simultaneously?

On Wednesday I noticed my car's temp gauge reading at bottom while driving down the highway. The air conditioner was also non-functional. Each of these components were working fine the day before. The ...
DeepDeadpool's user avatar
3 votes
1 answer
17k views

Where is the ambient temperature sensor located on an Opel / Vauxhall Insignia 2.0 CDTI 2010?

Can anyone offer some guidance in finding the placement of the ambient temperature sensor for an Opel / Vauxhall Insignia 2.0 CDTI 2010? The sensor seems to be malfunctioning. The value for the ...
user1969903's user avatar
7 votes
1 answer
3k views

Malfunctioning Ambient Temperature Gauge - 2004 Subaru Forester

I own a 2004 Subaru Forester XS with 102,000 miles on it and required service and inspections just completed. Now the Ambient Temperature Gauge keeps malfunctioning - often sticks at 77; after a ...
Joan's user avatar
  • 71
3 votes
1 answer
6k 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
Bobby Mccabe's user avatar
4 votes
1 answer
2k 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 ...
Tiger Blood's user avatar
0 votes
2 answers
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 ...
Cade's user avatar
  • 1
2 votes
2 answers
117 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 ...
Calaf's user avatar
  • 1,565
5 votes
1 answer
110 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 ...
NANDAKUMAR THANGAVELU's user avatar
4 votes
2 answers
2k views

Proper operating temp for a 1983 Mercedes 380SL?

My 1983 Mercedes 380SL seems to be running hotter than I like. It settles down at right at 100 C by the instrument panel temp gauge after running at highway speed for 10 minutes or so. When I first ...
Jay Maynard K5ZC's user avatar
4 votes
1 answer
310 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.
Josette's user avatar
  • 41
4 votes
1 answer
1k views

Thermocouple vs Thermostat

Why don't modern engines use a thermocouple (electronic temperature sensor) instead of a (wax element) thermostat?
voices's user avatar
  • 366
3 votes
1 answer
4k 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,...
JRowan's user avatar
  • 153
6 votes
3 answers
3k views

Engine temperature range?

Our 'new' ('07) Cobalt has a digital temp readout. Temperature varies substantially, depending on driving conditions - I've seen it as high as 210(F) on city streets, on a not-very-warm day. Our old ...
George's user avatar
  • 1,113
5 votes
2 answers
7k views

2012 chevy equinox blows hot air even shut off

We have a 2012 Chevrolet Equinox. We cant turn off the interior heat even when we turn the temp all the way down. Even when we turn off the heater it keeps blowing hot air. What could be the ...
Paul's user avatar
  • 51
4 votes
0 answers
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 ...
Patrik Berzander's user avatar
5 votes
3 answers
11k views

Problem with Temperature rising after 30 minutes of driving?

I have a Mitsubishi Galant 2003, 2.4L engine with 234k miles on it. When I drive it the temperature gauge gets up to exactly midway, until exactly 30 minutes. Then it goes up to about 2/3 or 3/4 of ...
James-Jesse Drinkard's user avatar
3 votes
2 answers
5k 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 ...
ceefax12's user avatar
  • 1,242
2 votes
1 answer
2k 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 ...
Thenaliraman's user avatar
4 votes
1 answer
3k 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 ...
Soumya Sen's user avatar
  • 1,521
5 votes
2 answers
11k views

what is the normal operating temperature indication on the guage?

My radiator got a leakage so I made a direct connection to the fan from the battery i.e. irrespective of the engine temperature the fan would start as soon as you turn on the ignition switch on. It ...
shabby's user avatar
  • 749
17 votes
7 answers
54k views

How exactly does running fuel-lean increase the temperature of ignition?

I learned in this question that running an engine fuel-lean will increase the temperature of ignition, among other things such as causing problems with the catalytic converter. I have no idea how or ...
Max Goodridge's user avatar
13 votes
4 answers
44k views

The purpose of covering the grill during cold weather

In some countries it is quite popular to cover up the front grill in winter (especially on diesel engined cars). As I understand the intention is to inhibit airflow to the radiator, but why would you ...
I have no idea what I'm doing's user avatar
7 votes
2 answers
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 ...
Max Goodridge's user avatar
4 votes
3 answers
3k 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 ...
Pranav Wadhwa's user avatar
8 votes
3 answers
82k views

Normal Operating Temp for an Automatic Transmission

While I was able to find information on testing the ATF temperature sensor in the GF4A-EL manual I've got: I was unable to find any info on the normal operating temperature of the transmission. I'm ...
Robert S. Barnes's user avatar
4 votes
1 answer
6k 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 ...
user2233706's user avatar
5 votes
2 answers
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?
felicia's user avatar
  • 51
11 votes
5 answers
133k views

Car won't reach operating temperature

Here's a seemingly simple problem - I noticed that the temperature gauge of my mother's 2004 Opel Meriva 1.7CDTI won't ever climb above minimum. I checked the OBD readings to see if it was a defective ...
I have no idea what I'm doing's user avatar
2 votes
2 answers
5k 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 ...
Twi's user avatar
  • 41
2 votes
1 answer
1k 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 ...
mach1shotgun's user avatar
9 votes
3 answers
87k 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-...
George's user avatar
  • 6,555
3 votes
1 answer
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 ...
End Anti-Semitic Hate's user avatar
2 votes
1 answer
3k views

Car shuts off right after cooling fan turns on

After several months of looking for issues in my car, I have finally fixed most of them, except for the "catalytic converter" light and the sudden shut off of the motor. Today I turned on the car ...
arielnmz's user avatar
  • 281
0 votes
1 answer
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 ...
Jas's user avatar
  • 41
4 votes
3 answers
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. ...
balex's user avatar
  • 213
0 votes
1 answer
88 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?
Fred T's user avatar
  • 9
3 votes
3 answers
25k 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 ...
Benedikt Bauer's user avatar
6 votes
1 answer
857 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 ...
Reinis's user avatar
  • 143
2 votes
1 answer
27k 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 ...
Robert S. Barnes's user avatar
-2 votes
3 answers
15k views

What causes a low coolent temp light to come on a 2012 Honda civic [closed]

My 2012 Honda civic with 19,000 miles has a blue temp light on dash and it seems to be running fine?
Scott's user avatar
  • 5
3 votes
1 answer
1k views

Can I place a mechanical water temp sensor within the radiator hose pipes?

I have a Mk1 Golf. The previous owner has put in the 3 GTi console gauges but didnt connect them. I want to connect up the water temp gauge (which is the mechanical type with a heat sensing bulb) but ...
MeltingDog's user avatar
  • 3,664
7 votes
6 answers
28k views

Why outside temperature displays a warning at 4 degrees?

I know that water behaves strangely once the temperature drops below 4 (celsius) degrees. In a nutshell, its volume starts to expand (see wiki for further details) below 4 degrees - when temperature ...
Dror Atariah's user avatar
17 votes
3 answers
122k 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?
Mehper C. Palavuzlar's user avatar

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