2003 MDX Touring w/ Nav
Cabin heat only gets 10-20 degrees Farenheit above exterior temperature, which isn't very effective in 30 degree weather. The problem existed before I completed the following:
Please help!!!! I'm having a baby TOMORROW (12/20/2012)
Cabin heat only gets 10-20 degrees Farenheit above exterior temperature, which isn't very effective in 30 degree weather. The problem existed before I completed the following:
- New OEM water pump from AcuraPartsWarehouse.com (previous ebay special leaked). The problem existed before the previous water pump was changed too.
- New water valve (previous had a hairline leak).
- Thermostat changed in 2010 (shouldn't affect this issue, but what the hell). I believe I used a high-temp unit which should allow coolant to get hotter before opening. The units are either 170 degree for OEM or 180 degree for high-temp, so I didn't expect a big difference anyway.
- Air mix motor assembly verified operational by me. I grabbed a flashlight and a screwdriver and got under the dash.
- Mode motor assembly not visually verified, but there is a distinct change felt in the air from the vents. ***
- Blower seems to be working because there is significant air flow.
- Numerous flushes and even used CLR isolated to the main heater core through the firewall.
- All air removed (No rushing water sound anymore).
- Climate control set to max heat (90 degrees Farenheit) which should take internal cabin temperature sensors out of the loop. I verified that the water valve opens and that the blend door moves.
- When enabling rear controls, no heat comes from the rear either. From looking at the set-up, both heater cores are in parallel, not in series, so I can't see how one would affect the other.
- I have 50/50 mixed coolant and verified that it is full. I'm slowly adding full strength from now on to help keep the fluid hotter until I find the real problem.
- After idling for 30 minutes with an exterior temp of 37 degrees Farenheit:
- The inlet to the main heater core after the water valve is hot.
- The outlet from the main heater core is luke-warm.
- The top radiator hose is hot.
- The bottom radiator hose is luke-warm.
Please help!!!! I'm having a baby TOMORROW (12/20/2012)