SLK/R170: A/C & top down
Thread Starter
Member
Joined: Jul 2003
Posts: 178
Likes: 0
From: Warwick, RI
SLK230
A/C & top down
I noticed yesterday that with the top down the A/C wasn't blowing cold air, it was actually kind of hot. I tried all of the vent selection on the dial. I also switched it from EC to non-EC a couple time to see if that setting was stuck. Then that night I had the top up and still no cold A/C. Ok now your thinking my air needs to recharged. I tried it again this morning and it works with the top up and down? I am really confused.
At first I thought it was something with the car where if the top was down, the computer turned off the A/C becuase it figures that the driver wouldn't want to use it. but after my night time experiance, I don't know anymore.
At first I thought it was something with the car where if the top was down, the computer turned off the A/C becuase it figures that the driver wouldn't want to use it. but after my night time experiance, I don't know anymore.
Super Member
Joined: Nov 2001
Posts: 569
Likes: 2
From: Chandler, Arizona - USA
'02 SLK32 AMG
The A/C should work with the top down. If it didn't, I'd have traded my SLK in a long time ago.
Lots of possible reasons for your problem, including
- heater valve is malfunctioning allowing hot coolant through the heater core
- Mixer (flap) is malfunctioning.
- Electrical problem causing A/C compressor not to kick on.
- Coolant is low, right on the edge where the pressure sensor sometimes senses it's too low and sometimes not.
Lots of possible reasons for your problem, including
- heater valve is malfunctioning allowing hot coolant through the heater core
- Mixer (flap) is malfunctioning.
- Electrical problem causing A/C compressor not to kick on.
- Coolant is low, right on the edge where the pressure sensor sometimes senses it's too low and sometimes not.
Newbie
Joined: May 2004
Posts: 12
Likes: 0
From: Boston,MA & Orlando, FL
slk 230 - 2001
Question from a new owner
I moved from Boston to Orlando, FL and as you all know, the heat here is oppressive... Now I have to have the AC on, and with the price of gas the way it is, I'm curious to know from you guys if you noticed a huge difference in gas usage when the AC (and when the heat) is turned on (SLK 230, 2001)...
thanks
thanks
Super Member
Joined: Nov 2001
Posts: 569
Likes: 2
From: Chandler, Arizona - USA
'02 SLK32 AMG
I keep a log of the fuel economy in my SLK32. I drive with the A/C on for 8 months of the year. There is about 1mpg difference between the months where the A/C is on and when the A/C is off. That is a combination of the increased load from the A/C and the decreased efficiency of the intercooler.
That's about a 5% decrease in fuel economy for a 230 that averages 20mpg. If you drive 12K miles per year and pay $2.50/gallon for gas, you'd be paying an extra $1.45 per week to use the A/C.
You're the guy that posted wondering about using lower grade fuel to save money, right? Just try to cut back on your driving as much as possible. You'll save alot more money that way.
That's about a 5% decrease in fuel economy for a 230 that averages 20mpg. If you drive 12K miles per year and pay $2.50/gallon for gas, you'd be paying an extra $1.45 per week to use the A/C.
You're the guy that posted wondering about using lower grade fuel to save money, right? Just try to cut back on your driving as much as possible. You'll save alot more money that way.
Newbie
Joined: May 2004
Posts: 12
Likes: 0
From: Boston,MA & Orlando, FL
slk 230 - 2001
Yeah.
Not taking in consideration California, I believe I was living in one of the most expensive areas of country for gas prices. While driving down from Boston to Orlando, I noticed that in Georgia, the Carolinas and in Florida the price was much much lower (about 15%). I'm not sure if it had to do with taxation or if the gas companies think that people from the Northeast are wealthier or what.
I spent an avarage of 8 hours a week, in/out the city, driving in MA due to my comute to clinics etc I used to fill up my tank 2x a week.
Not taking in consideration California, I believe I was living in one of the most expensive areas of country for gas prices. While driving down from Boston to Orlando, I noticed that in Georgia, the Carolinas and in Florida the price was much much lower (about 15%). I'm not sure if it had to do with taxation or if the gas companies think that people from the Northeast are wealthier or what.
I spent an avarage of 8 hours a week, in/out the city, driving in MA due to my comute to clinics etc I used to fill up my tank 2x a week.
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Newbie
Joined: May 2004
Posts: 12
Likes: 0
From: Boston,MA & Orlando, FL
slk 230 - 2001
Yeah.
Not taking in consideration California, I believe I was living in one of the most expensive areas of country for gas prices. While driving down from Boston to Orlando, I noticed that in Georgia, the Carolinas and in Florida the price was much much lower (about 15%). I'm not sure if it had to do with taxation or if the gas companies think that people from the Northeast are wealthier or what.
I spent an avarage of 8 hours a week, in/out the city, driving in MA due to my comute to clinics etc I used to fill up my tank 2x a week.
Not taking in consideration California, I believe I was living in one of the most expensive areas of country for gas prices. While driving down from Boston to Orlando, I noticed that in Georgia, the Carolinas and in Florida the price was much much lower (about 15%). I'm not sure if it had to do with taxation or if the gas companies think that people from the Northeast are wealthier or what.
I spent an avarage of 8 hours a week, in/out the city, driving in MA due to my comute to clinics etc I used to fill up my tank 2x a week.
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