| From | Message |
Joe
Dodge Dakota
10/07/2001
01:51:20
|
 Subject: Anyone else loose Hp due to AC
IP: Logged
Message:
It seems that when I run my A/C on my 1990 3.9L Dak, I loose alot of power. Living in South Fla, I use the AC alot this time of year. I run 31's and on a recent trip, one way I used ac and my truck kept down shifting to keep up a approx. 65-70 MPH speed. Headed home with no ac, truck ran like a gem, even had plenty of passing power above my running 65-70mph. Any light weight pullies for 1990 Daks out there? Need em bad I guess.
Joe E.
|
sandman
Dodge Dakota
10/07/2001
09:44:15
|  RE: Anyone else loose Hp due to AC
IP: Logged
Message:
Everybody loses HP with A/C running. It can be anywhee from 6-15 HP depending on the design.
|
SuperDak
Dodge Dakota
10/07/2001
13:25:42
|  RE: Anyone else loose Hp due to AC
IP: Logged
Message:
Why's that?
|
TODD
Dodge Dakota
10/07/2001
14:14:32
| RE: Anyone else loose Hp due to AC
IP: Logged
Message:
MY 5.9 QC YOU CANT FEEL A THING
|
Boomer
Dodge Dakota
10/07/2001
14:37:43
| RE: Anyone else loose Hp due to AC
IP: Logged
Message:
You do loose power while running the A/C, whether you feel it or not. I cannot feel it in my Dak, nor in my Sebring, but it's there. The A/C is a pump; it pumps gas (Freon) through your system. The condenser, accumulator, etc. Since it has to pump that gas (at a given pressure) through the system, it needs power, hence the power loss.
Did you loose power before while running the A/C? If you didn't, then something might be wrong with the compressor (more than liekly) or somewhere else in the system. I wouldn't think that would happen at highway speeds, even in Death Valley. You should feel a power loss, but enough to cause you to shift in and out of o/d, unless you are hill climbing. But since I use to live in FL, I know that isn't true.
What tire size did you have before the 31's? Did you change the gears? Those can actually have a big impact on how the truck runs. Sure it might be fine without A/C, but together it may drag you down.
IMHO
Boomer
|
SuperDak
Dodge Dakota
10/07/2001
15:04:54
| RE: Anyone else loose Hp due to AC
IP: Logged
Message:
why does my idle rpm go from 500 to 900 when i turn on my a/c?
|
Boomer
Dodge Dakota
10/07/2001
15:11:14
| RE: Anyone else loose Hp due to AC
IP: Logged
Message:
The only thing I can think of is that the engine computer sets it self up for the power loss. This way you're a little higher up one the power curve. But I really don't know why. I've never see that before. Just to the fact that my Sebring goes to 800rpm or so then back down to it's normal idle when I turn the A/C on.
Boomer
|
Joe
Dodge Dakota
10/07/2001
20:09:17
| RE: Anyone else loose Hp due to AC
IP: Logged
Message:
My Dak had 215x75x15's on it before the 31's. Thats about 27x 9 in. So I did go up quite a bit on the tire size. No gear changes yet. Thought about going to 3.92 gears but decided to wait until I feel that I will not try to lift it anymore. Dont want to change gears twice. I understand the larger tires will pull HP down simply due to weight. Are there any pullies out there on the aftermarket that could help with this? Thanks for the help.
Joe E.
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
