You need to have your heater looked at and possibly replaced. This is one of those parts that could be found at a salvage yard and put in for some cheap labor.
The acura vigor does not have a block heater.
check fuse
I assume your car heater is blowing cold air, when the heater is on. It seems that, you have air on your coolant. that air pockets blocks the cooland to travel through your heater. it may be a sign of a bigger problem such as blown head gasket in the old cars, such acura legend
The 1992 Acura heater control relay switch can be found beneath the passenger side dashboard. The heater control relay switch will be a few inches above the kick plate.
It will cost approximately $350 to replace your 1987 Acura Legend heater core. The heater core will cost approximately $50. It will take approximately 5 hours of labor to complete the job.
check for a blown fuse that says heater or blower motor
A heater wiring diagram can be found inside a 1989 Acura Legend workshop manual. The manuals will also have troubleshooting procedures detailing how to solve common problems with the vehicle.
I own a 1994 acura integra and the heater/air conditioning blower is not working, I can not defrost my windows and the heat does not blow. What is wrong and how can the problem be fixed.
thermostst is stuck
You can find the heater core behind the kick plate in your 1993 Acura Legend. Remove the water hoses. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
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If it's 1999~2004 Acura TL, the port is under the radio, besides the seat heater. If it's an older version, the port is behind the ashtray.