Heater Slow?

[jgruberman]

Agree with the next step advice from @timshooter40.

One question before you begin.

When you manually increase the blower speed with the selector switch, does the sound of the blower get louder?

Just want to make sure blower is being controlled to high speed and not stuck in low.

Yes, when I have it on low it is quiet and when I have it on high, it sounds like a wind tunnel

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[jgruberman]

This was the answer almost three months ago, and it's still the answer now.

I was looking at that picture, and you found your problem.

The airflow through that evaporator is significantly restricted.

Your heater core probably looks about the same.

I know you don't want to do it, but if you want your HVAC system to work as it should, you will have to pull the dash and remove and clean your evaporator and heater core.

If it were me and I had the dash out, I would install a new heater core and evaporator core while I had access.

They are not that expensive compared to the labor required to access them.

Anything else is a waste of your time.

I've been a full-time mechanic for over 20 years.

I've seen lots of evaporators that look just like that.

When you're done, put the aftermarket air filter back in there, and this will probably never happen again.

Replace the air filter every 20k miles or so.

And that is fair; I was trying to narrow down all of the possibilities before I had to pull everything.

I'm unfamiliar with replacing those cores, so I've been avoiding it, hoping there was a more straightforward solution.

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[Aj Grubb]

And that is fair; I was trying to narrow down all of the possibilities before I had to pull everything.

I'm unfamiliar with replacing those cores, so I've been avoiding it, hoping there was a more straightforward solution.

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Sorry bud, no shortcut on this one.

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