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Old 08-12-2017, 01:30 PM   #1
RENESIS VIII
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Default Aircond Compressor Draining Too Much Power?

I noticed that my Wira 4G15's air cond seems to drain a lot of power from my engine especially during hot afternoon. On night time, early morning or on cooler days even with air cond switched on and compressor kicking in, the power drain seems to be less obvious.

Like when the compressor is kicking in during hot afternoon time, I notice a reduction in torque where I feel that my revs will climb but the pulling feeling from torque is not there. When I switched the air cond off or when the compressor is not kicking in, I can feel the pulling feeling from torque again. Is this normal that the compressor will draw this much of power especially during hot days?
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Old 08-12-2017, 04:13 PM   #2
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Default Re: Aircond Compressor Draining Too Much Power?

Also during hot time/days the air is hot. Early morning and night the air is cool and more dense. As you know cooler air always better for combustion.....lol
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Old 08-12-2017, 08:44 PM   #3
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Default Re: Aircond Compressor Draining Too Much Power?

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Also during hot time/days the air is hot. Early morning and night the air is cool and more dense. As you know cooler air always better for combustion.....lol
Yes, I understand this factor. But the underpowered effect is very noticeable during hot afternoon when air cond compressor kicks in while in cooler climate, even if the compressor kicks in, the drain is not so noticeable. Could it be that the air cond compressor is actually working harder during hot afternoon, hence the power drain from engine is larger?
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Old 08-13-2017, 11:42 AM   #4
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Default Re: Aircond Compressor Draining Too Much Power?

You need to route ac blower to throttle body.
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Old 08-13-2017, 11:44 AM   #5
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Default Re: Aircond Compressor Draining Too Much Power?

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Yes, I understand this factor. But the underpowered effect is very noticeable during hot afternoon when air cond compressor kicks in while in cooler climate, even if the compressor kicks in, the drain is not so noticeable. Could it be that the air cond compressor is actually working harder during hot afternoon, hence the power drain from engine is larger?
Work the same, longer time only to get to set temperature since is hotter outside.....
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Old 08-13-2017, 11:45 AM   #6
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Default Re: Aircond Compressor Draining Too Much Power?

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You need to route ac blower to throttle body.
Fuh! CAI......hhahahhahha
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Old 08-13-2017, 12:13 PM   #7
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Default Re: Aircond Compressor Draining Too Much Power?

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Work the same, longer time only to get to set temperature since is hotter outside.....
on modern cars, you dont feel the power lost when the compressor kicks in. not even a drop in the rpm while idling. but that's on a new car la. hahaha
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Old 08-13-2017, 01:23 PM   #8
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Default Re: Aircond Compressor Draining Too Much Power?

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Originally Posted by sanekit View Post
You need to route ac blower to throttle body.
And you get balanced result. Power loss from compressor but compressor supplies cool air to increase back power.

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Originally Posted by vr2turbo View Post
Work the same, longer time only to get to set temperature since is hotter outside.....
I also noticed that if I left it idling or just drive at lower RPM, the air doesn't really feel cold and the compressor is kicking in all the time. But when I really rev the engine hard to like 4000 rpm and above, the air gets cold after that. Compressor also will not kick in all the time. Is it because the compressor gets more power from higher RPM?

Quote:
Originally Posted by sanekit View Post
on modern cars, you dont feel the power lost when the compressor kicks in. not even a drop in the rpm while idling. but that's on a new car la. hahaha
Hmmm, why?
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Old 08-13-2017, 06:39 PM   #9
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Default Re: Aircond Compressor Draining Too Much Power?

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I also noticed that if I left it idling or just drive at lower RPM, the air doesn't really feel cold and the compressor is kicking in all the time. But when I really rev the engine hard to like 4000 rpm and above, the air gets cold after that. Compressor also will not kick in all the time. Is it because the compressor gets more power from higher RPM?
Compressor mah! The more rpm means more air con gas is circulated hence the air con is cooler.......lol
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Old 08-13-2017, 06:40 PM   #10
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Default Re: Aircond Compressor Draining Too Much Power?

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on modern cars, you dont feel the power lost when the compressor kicks in. not even a drop in the rpm while idling. but that's on a new car la. hahaha
You try driving with and without the air con on, sure to have difference in power......lol
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Old 08-13-2017, 07:26 PM   #11
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Default Re: Aircond Compressor Draining Too Much Power?

bro renesis, aircond condenser fan OK ? check gas pressure too.
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Old 08-13-2017, 07:28 PM   #12
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Default Re: Aircond Compressor Draining Too Much Power?

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Originally Posted by sanekit View Post
on modern cars, you dont feel the power lost when the compressor kicks in. not even a drop in the rpm while idling. but that's on a new car la. hahaha
this one i full agree.
for an old engine in exchange for power, is ok lah. Hahahaha....
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Old 08-13-2017, 07:52 PM   #13
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Default Re: Aircond Compressor Draining Too Much Power?

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Originally Posted by vr2turbo View Post
You try driving with and without the air con on, sure to have difference in power......lol
surprisingly on the jazz got no difference. like the ac compressor doesnt exist. LOL. oh, the new 2016 jazz no water temp gauge on the meter. just outside temperature only. dunno can set that to water temp or not.
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Old 08-13-2017, 08:29 PM   #14
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Default Re: Aircond Compressor Draining Too Much Power?

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Originally Posted by sanekit View Post
surprisingly on the jazz got no difference. like the ac compressor doesnt exist. LOL. oh, the new 2016 jazz no water temp gauge on the meter. just outside temperature only. dunno can set that to water temp or not.
yup, feel notin.
Felt something missing, like the engine vibrate the car ehh ? hahaha...
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Old 08-13-2017, 09:11 PM   #15
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Default Re: Aircond Compressor Draining Too Much Power?

Quote:
Originally Posted by sanekit View Post
surprisingly on the jazz got no difference. like the ac compressor doesnt exist. LOL. oh, the new 2016 jazz no water temp gauge on the meter. just outside temperature only. dunno can set that to water temp or not.
Many new makes do not have the water temp meter dy. blue then warm up disappear, by the time red color appears may be too late.....lol
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