FAQ for A/C Evaporator Core Repair
Q: Evaporator: How to service the A/C and avoid wet carpets?
A:
Awet carpet is caused by a plugged HVAC evaporator drain tube. A plugged drain tube will cause all water to be pushed into the dashboard of the vehicle resulting in it being disposed of in the interior of the vehicle.
By OmarGM Specialist
22/11/2021 Q: How can a leaking drain tube be fixed?
A:
You must first jack up the vehicle and inspect the drain tube to ensure no debris or items are plugging up the drain. Secondly, you must reposition the heat shield so it is out of the way of the drain tube. Remove the black cap and white plug to make sure there is no debris stuck in the tube coming from the dashboard and reinstall the plug once the tube has been checked. Lastly, apply high-tech seam sealer to the plug and reposition the heat shield back to where it initially was.
By BobGM Specialist
21/11/2021 Q: What if the vehicle isn't equipped with the after-blow feature?
A:
If the vehicle is not factory equipped with the embedded after-blow enable feature, it may be added with the Electronic Evaporator Dryer Module Kit.
By BobGM Specialist
19/11/2021 Q: What is causing this odor?
A:
The odor may be the result of microbial growth on the evaporator core. This condition may be caused by condensate build-up on the evaporator core, which does not evaporate by itself in high humidity conditions.
By BobGM Specialist
17/11/2021 Q: How do I get rid of the odor?
A:
Many vehicles currently incorporate an after-blow function within the HVAC control module software. The after-blow feature, when enabled, employs the HVAC blower fan to dry the evaporator after the vehicle shut down and this function will inhibit microbial growth.
By BobGM Specialist
17/11/2021 Q: How do you check the tube after servicing it?
A:
To check the drain tube, you will need to allow the vehicle to run for some time with the A/C on. Throughout that time it is running, inspect that the water is draining properly and not making its way back into the vehicle.
By OmarGM Specialist
17/11/2021 Q: What can cause musty odors coming from the vents?
A:
The odors can be caused by condensate build-up in the evaporator core.
By OmarGM Specialist
17/11/2021 See more FAQs (2)