Cold weather makes your gas milage go down?

[Pepsi90919]

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they stay in open loop longer.
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If you bothered to read the thread, I corrected that mistake already.


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most cars also have a thermostat tied in with a pressure switch and delay unit.
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I already stated that.

i quote things in threads as i go down and read them. up at the top you still state that open loop is closed loop and that cycling is strictly dependent on refrigerant charge which is false.

 

cycling is strictly dependent on refrigerant charge which is false.

Please read the whole thread.

 

[Pepsi90919]

Originally posted by: Roger

cycling is strictly dependent on refrigerant charge which is false.

Please read the whole thread.

i already read what you had said. hello?

 

[Pepsi90919]

ooh, now it's bolded.

 

[Eli]

Originally posted by: Roger

they stay in open loop longer.

If you bothered to read the thread, I corrected that mistake already.

most cars also have a thermostat tied in with a pressure switch and delay unit.

I already stated that.

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Oh.. and just driving normally in cold weather will increase gas consumption. Due to the fact that the gas is being burnt mre efficently because of the colder, denser air.
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Please elaborate on this statement please.

If the engine is more efficiant, them less gas is burned per mile traveled.
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This is an incorrect assumption, please read the thread carefully.

You also get a net reduction in fuel milage when it's 100 degrees and 90% humidity.

Only in carburated vehicles that cannot adjust the mixture accordingly.

Really? So a computer controleld fuel injected engine sees no performance loss from high ambient air temperatures? Hmmm.. But even if the computer adjusted the mixture, wouldn't you still be netting less power, since it would have to reduce the fuel charge.. and then you'd have to step on the gas just a bit more?

 

Quoting myself

You have a low freon charge, this causes cycling of the A/C compressor.

This is true to a certain extent, it depends on the settings of the A/C thermostatic control and the efficiancy of that particular A/C system.

Ohh, now it'd bold

If you don't want to converse in a friendly manner, don't converse at all.

Really? So a computer controleld fuel injected engine sees no performance loss from high ambient air temperatures? Hmmm.. But even if the computer adjusted the mixture, wouldn't you still be netting less power, since it would have to reduce the fuel charge.. and then you'd have to step on the gas just a bit more?

Yes, but you must understand that we are talking about engine efficiancy everyone is confusing this with fuel mixture, these are two completely seperate issues.

Does engine efficiancy drop because of temperature changes ?

No, it does not, only the amount of power and the amount of fuel injected changes 🙂

There is a direct relationship between the amount of fuel burned and rated output, this relationship does not change with outside ambient temperature.


What is going on ?

My posts are getting all screwed up
😕

Geebus, are the gods mad at me today.


Now, if the vehicle is carbureted, then you will see a reduction in fuel mileage because the carb cannot change the mixture ratio to compensate, this is why drag racers take temp and barometric readings and swap jets accordingly.

 

[Pepsi90919]

If you don't want to converse in a friendly manner, don't converse at all.

saying i haven't 'bothered to read the thread' is not conversing in a friendly matter. obviously i did read it because i found what i had quoted above. i call WTF on that. i quoted what you had written and expressed thoughts on it. if you don't want this to happen then stop posting. 🙂

btw it's "ooh, now it's bolded." not "Ohh, now it'd bold". .. read the thread!! 😉

 

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Originally posted by: Roger

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Not on my car, the A/C comes on sporadically.
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You have a low freon charge, this causes cycling of the A/C compressor.
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I do? My A/C blows nice and cold in the summer though...
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Then the drain in your heater box is plugged, this allows condensation to drain, if this is plugged, ice will form and cycle the A/C compressor

Where is this statement false ?

You are taking my quotes out of text and then stating that they are false

This is why I stated that you read the whole thread, obviously which you did not.

Do you like to instigate fights and flame wars ?

 

[Pepsi90919]

i'm not instigating anything. you can drop it now.