Interior Exterior
Q:
Called the dealer last week b/c we are already seeing high 80s and low 90s here. Dealer said that Lotus is working on a solution but doesn't have one yet.
Also, for those with the headlamp burns, they still don't have the little circle items to stop more burning.
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http://www.jcwhitney.com/autoparts/P...013479/c-10101
A:
Has anyone had any success with a better A/C unit yet. It hit 101 this week in Dallas, and they OEM unit is not good at all at that type, or anything over 90. Has anyone tried by passing the heater core?
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The AC in my 06 Exige is much better than the AC was in my 05 Elise...
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The AC in my 06 Exige is much better than the AC was in my 05 Elise...
Yeah, you're Elise did get pretty hot
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My ac seems fine up to 90 degrees and humid with the hard top on. My 50 percent window tint might help a little. I think a heater core bypass valve and higher output electric fans will make it good to 100+ and humid. When you stop it definitely gets warmer. Maybe bumping the idle to 950 or 1000 would help in stop and go traffic.
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Where's the poll?
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Just go off the phone with the dealer. The only Lotus official suggestion is not to use the highest fan setting. They are still working on a solution but no TSB as of yet.
Can someone tell me the how and the results of bypassing the heater core?
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Just go off the phone with the dealer. The only Lotus official suggestion is not to use the highest fan setting. They are still working on a solution but no TSB as of yet.
Can someone tell me the how and the results of bypassing the heater core?
I bypassed the heater core (big big big big difference). I also added freon. My ac went from marginal to
acceptable. I documented temps before and after. Did all this last summer. South Florida heat.
I drove my friends Elise yesterday. He needs the same treatment.
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Mine didn't work so well while I was in Texas and Oklahoma, even after the service bulletin was complied with. However, that problem seems to have fixed itself now that I am back in Alaska.
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I found the bypass info. Has anyone talked to Lotus (not the dealer) about any thing coming up on this. Looks like I will definitely need to add the heat matrix back in order to hit the track. I'm assuming I will get some heat soak as the pipes and hoses still allow complete circulation just not through the matrix. Its only 80 here today, I'll post more on results once we see 100 again.
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Has anyone tried by passing the heater core?
I think it's been done, but one possible problem with eliminating the heater core is that if the engine heat soaks after you shut it down, the ECU will turn on a cooling pump that circulates water to eliminate the hot spots and reduce the heat. I believe that the system routes the coolant through the heater core to lower the temperatures. Bypassing this system may cause problems with heat soaking - specifically in hotter climates where you may want to bypass the heater...
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After having my local dealer replace the evaporator with a new (redesigned) one, a/c works great!
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After having my local dealer replace the evaporator with a new (redesigned) one, a/c works great!
Was this a Lotus redesigned part, after market company, or custom fab?
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mine doesn't work because the flap broke.. no wonder it was blowing hot air all the time :sad
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After having my local dealer replace the evaporator with a new (redesigned) one, a/c works great!
OMG You are kidding. This is awesome. After bringing my Elise down from New York I was getting scared that there was no hope for seriously hot weather. Thanks for the info.
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After having my local dealer replace the evaporator with a new (redesigned) one, a/c works great!
More info!
Did they just move the temp probe or replace the entire evaporator? I'm getting pretty nervous about my starlight black car that'll be here during July...
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I think it's been done, but one possible problem with eliminating the heater core is that if the engine heat soaks after you shut it down, the ECU will turn on a cooling pump that circulates water to eliminate the hot spots and reduce the heat. I believe that the system routes the coolant through the heater core to lower the temperatures. Bypassing this system may cause problems with heat soaking - specifically in hotter climates where you may want to bypass the heater...
The heat soak system comes on at 100 degress celsius (212 F) up 110 when the big radiator fans kick on. My car idling in traffic doesn't go past 212, don't know what it is if just sitting in the garage at shut down, but the car stays mostly about 197-202F. and, yes, I'm concerned about the heat soaking through the matrix. I'd like to hear more about the new evaporator someone just mentioned.
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The heat soak system comes on at 100 degrees Celsius (212 F) up 110 when the big radiator fans kick on. My car idling in traffic doesn't go past 212, don't know what it is if just sitting in the garage at shut down, but the car stays mostly about 197-202F.
That's the temperatures when the engine is running. Unfortunately, often times when the engine is shut down, residual heat is given off by the engine (heads, etc.) to the cooling system creating local hot spots. This is the heat soaking that the circulation pump takes care of - often long after you have left the car parked (I believe - if I remember correctly - the ECU monitors the temperature for 20 minutes after shutdown to determine if the circulation pump needs to be turned on).
I don't know if it is a problem in the Elise, but Lotus must have thought it was needed enough to have installed the electric circulation pump and to have programmed the ECU to monitor the temperatures....
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Mine is working too well. It freezes me.