I think my car is making me sick!
04-12-2007, 01:36 PM
#16
Burning Brakes
Thread Starter
Originally Posted by SharkSkin
Travis, most likely you have a bad hatch seal. A bad seal on the inner(upper) battery box lid can let stuff leak in as well. Having the window open will suck air and gasses in through the hatch and out the window -- but not before you get a chance to breathe it. With the window up there will be less gas sucked in, but still some would get in. The CO alarm may not be sensitive enough -- it's possible it ignores transient CO spikes, but on average you get enough to be a problem.
Anyway, another source could be from under the hood. If the seal at the firewall is missing or damaged you could get gasses from the engine compartment in the cabin.
The motor mounts on the early cars don't normally collapse as much as the fluid ones IMHO but still check for hot air at the shifter.
Anyway, another source could be from under the hood. If the seal at the firewall is missing or damaged you could get gasses from the engine compartment in the cabin.
The motor mounts on the early cars don't normally collapse as much as the fluid ones IMHO but still check for hot air at the shifter.
Any idea where I'd start looking for a firewall leak?
I think you're right about the CO alarm. I held it directly over my exhaust pipe for several minutes and nothing happened.
-T
04-12-2007, 01:46 PM
#17
Burning Brakes
Thread Starter
Originally Posted by first time 928 owner
When is the last time you refilled your air conditioning? I got headaches from mine when i used it when i first bought my car 
04-12-2007, 01:50 PM
#18
Rennlist Member
Travis, that's a good way to seal the battery box area, since you don't care much about the paint. For the hatch though, just seal the gap with some 2" masking tape so you don't take the paint off (or leave adhesive) when you remove it. Also, do you have the plug over the fuel sender in the hatch floor?
As for the firewall, look at the pic below(yeah, it's ugly, that was the day after I bought the car). behind the air cleaner is a rubber seal that prevents air from the engine bay from spilling into the cowl area. That's the most likely suspect in the engine area, IMHO. Also check the point where the heater hoses penetrate the firewall, and check for the rubber flap on the firewall below the HVAC blower. Any of these points can let fumes into the HVAC system.
You could also have a penicillin factory in full bloom on your evaporator.
As for the firewall, look at the pic below(yeah, it's ugly, that was the day after I bought the car). behind the air cleaner is a rubber seal that prevents air from the engine bay from spilling into the cowl area. That's the most likely suspect in the engine area, IMHO. Also check the point where the heater hoses penetrate the firewall, and check for the rubber flap on the firewall below the HVAC blower. Any of these points can let fumes into the HVAC system.
You could also have a penicillin factory in full bloom on your evaporator.
04-12-2007, 02:45 PM
#21
Inventor
Rennlist Member
Rennlist Member
Check if the crank vent hose from the oil fill cap is cracked or disconnected (may go to airbox in '79). Those vapors are definately headache producing.
04-12-2007, 06:21 PM
#22
Y connector from the charcol canister?
04-12-2007, 06:57 PM
#23
Rennlist Member
Sean, good thought, but that can't get into the cabin without one of the other issues that have been mentioned being present. Also, I don't think the early cars have quite the same setup -- no "Y" connector IIRC.
