Dear RS heater tube, you almost gave me hypothermia last night...
11-22-2008, 08:47 PM
#1
Rennlist Member
Thread Starter
Dear RS heater tube, you almost gave me hypothermia last night...
Last night I drove from CT to VT, and aside from running into a freak snowstorm in Vermont that slowed me down to 35 MPH on the highway, I almost froze to death. It was in the teens, both outside and inside the cabin of my car. I'm not exaggerating. I had to stop in Montpelier and go jogging at 1AM, just to get the blood circulating so I could warm up.
I have a 1996 993 with the factory RS heater bypass tube. Around town, even in chilly weather, there is enough heat to keep you warm. You set the temp dial to full heat, the blower to max (which with the RS tube means the fan still runs VERY slowly), and you get nice gusts of hot air when you rev the engine above 3000 RPM's as you're driving around.
But on the highway, there is a lot of cold air seepage in the cabin, and for some reason there is ZERO warm air that comes through the vents any longer. I live in New Haven now and am going to be driving my car all winter, as long as there isn't any salt on the roads. I need heat and am going to put my car back to stock if there isn't a way to make this work.
And no, those electrical mods you can do on the 964 models are different than on the '96 and later 993's. It's a different setup. Does anyone know how to make some heat? I'm not looking to bake bread in the cabin of my car -- I just want to be able to drive on a cold night and not almost die.
I have a 1996 993 with the factory RS heater bypass tube. Around town, even in chilly weather, there is enough heat to keep you warm. You set the temp dial to full heat, the blower to max (which with the RS tube means the fan still runs VERY slowly), and you get nice gusts of hot air when you rev the engine above 3000 RPM's as you're driving around.
But on the highway, there is a lot of cold air seepage in the cabin, and for some reason there is ZERO warm air that comes through the vents any longer. I live in New Haven now and am going to be driving my car all winter, as long as there isn't any salt on the roads. I need heat and am going to put my car back to stock if there isn't a way to make this work.
And no, those electrical mods you can do on the 964 models are different than on the '96 and later 993's. It's a different setup. Does anyone know how to make some heat? I'm not looking to bake bread in the cabin of my car -- I just want to be able to drive on a cold night and not almost die.
11-22-2008, 08:57 PM
#2
Rennlist Member
Thread Starter
Getting gas/jogging to stave off hypothermia at 1 AM. Today I gave her a thorough wash with hot water, especially on the underside, wheel wells, engine, etc. I hate salt. Luckily there was barely any on the roads last night.
11-22-2008, 09:13 PM
#4
Rennlist Member
Thread Starter
In the archives, in a thread I participated in a while ago, Lorenfb, the electronics expert, said this about the RS bypass tube:
But then someone posted that he'd tried this, and it didn't work. I suppose the least mickey-mouse thing to do is get 12 volts from somewhere else and tap it into pins 19 and 1. I'll try to ping Loren and see what he thinks, although he is always very skeptical of modifying factory electronics.
the CCU needs to "see" a feedback voltage (+12) from the blower relay. This can by accomplished by jumping G35 (#15) to pins G1 & G19 on the back of the larger connector (35 pins). ...
Pin 35 is the 12 volt supply to the CCU and should not be connected abitrarily to other pins. Pins 19/1 are the blower motor supply voltage feedbacks.
Pin 35 is the 12 volt supply to the CCU and should not be connected abitrarily to other pins. Pins 19/1 are the blower motor supply voltage feedbacks.
11-22-2008, 09:43 PM
#5
Addict
Rennlist Member
Rennlist Member
In the old days VW Bug drivers often brought german shepherds with them for heat on longer drives. The dogs, not the actual shepherds, but that's optional.
Trending Topics
11-22-2008, 10:21 PM
#9
Rennlist Member
Welcome back to VT Noah. Freak snowstorm? Come on buddy... Freak snowstorms only happen here in July. Did you drive here with summer tires on? If so, you're nuts.
A dozen years ago I was driving back from CT in early Nov. too, foolishly with summer tires on. It took me 12 hours to go from Stamford, CT to this area. Coming up Rt 91 there was an accident where I had to slow down going up a hill. I was spinning my tires in first and second gear and had to "knock and ping" my way up the road at about 20 mph in third gear with fear of getting stuck. Now, the snows go on in October
A dozen years ago I was driving back from CT in early Nov. too, foolishly with summer tires on. It took me 12 hours to go from Stamford, CT to this area. Coming up Rt 91 there was an accident where I had to slow down going up a hill. I was spinning my tires in first and second gear and had to "knock and ping" my way up the road at about 20 mph in third gear with fear of getting stuck. Now, the snows go on in October
11-22-2008, 10:22 PM
#10
Rennlist Member
Thread Starter
11-22-2008, 10:29 PM
#11
Seared
Rennlist Member
Rennlist Member
Noah,
I wonder if a significant amount of hot air is exiting the cast aluminum flapper boxes while at higher speeds. How about temporarily taping those shut to see if the situation changes?
Andreas
I wonder if a significant amount of hot air is exiting the cast aluminum flapper boxes while at higher speeds. How about temporarily taping those shut to see if the situation changes?
Andreas
