Skip the auto shop - Our mechanics make house calls

Q: No heat, no sound, no nothing

asked by on

My van had heat coming out of the defrost only, now I have nothing. Is it the blower motor, resistor, or relay

My car has 330000 miles.
My car has an automatic transmission.

A: Hi. An electrical diagnostic by a certified...

Hi. An electrical diagnostic by a certified professional would determine if the blower motor, resistor, relay, wiring, and switch are operational. It is not unusual for the resistor block to go bad and certainly that can be looked at first. Resistor blocks are tested for continuity and there is a specified resistance in ohms at each setting. If you desire a Diagnostic, as well as repair of the fault, please feel free to contact YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Metal wheel broke in half and belt laying on top of it..

I can tell you that this is fixable. Without seeing this in person I am unsure which pulley has caused the failure but I would think it is either the water pump or tensioner pulley. I can only suggest having...

Q: Starts and dies

It sounds like what you are describing is something related to a fuel supply issue, which may be related to low fuel pressure, faulty or dirty fuel injectors, a faulty or dirty idle air control valve (this relays information about...

Q: Car is leaking oil

This engine may have oil leaks from the valve covers, or any other engine gasket below the covers. When looking at oil leaks, the best practice is to look at the highest point of the leak, which may be leaking...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.