New owner of a 96 Astro cargo van here. I'm hoping you guys can help. I've been looking for an answer for two months now (I've searched here as well) and it's getting really hot now (Phoenix Az)
I have no blower motor at all. Well. Let me rephrase. It doesn't run 99.9% of the time. Doesn't matter if it's heat, AC, defrost... Nothing. It has blown twice for short periods which tell me the electrical system is mostly intact. But it only blows out the defrost vent when it did.
First I found the common vacuum leak that all vans have due to GM using that dumb nylon plastic that turns to a mess after its exposed to engine bay heat for any extended time. No change. Then I found the other rubber hoses all deteriorated. I believe I have those ran correctly as well.
Second I replaced the resistor pack/card located in the blower housing. It didn't look great. But alas. Still no change.
So I got a new blower motor as well. Nada.
So then I checked all fuses (shoulda done first I know) but found no issues. I even checked that they had good connection. I ohm'd out the ground and found that was fine as well. Then I swapped AC relays with no luck. So I'm assuming those are fine.
Finally I tried a junk yard Fan/AC/Vent switch which was in very very good shape. I swapped it out in the parking lot of the junk yard and.... Nothing. Then when I was about halfway home the fan came on randomly through my defrost vents! It was on med-high and dumb me I checked to see if all fan speeds worked, and it stopped the second I moved the switch and never came back.
So I went back online and found the resistors sometimes fail and take connectors with. I inspected all the connectors I could find including at the resistor pack, behind the battery. And all that go to the switch in the dash. All connections look fine. I tried manually jumping out my switch in the dash, nothing. And it appears I'm only getting 1.7-2.0v at the resistor pack.
What am I missing guys? I love this van so far, but if I can't get even some air moving around, I'm not going to be able to drive it 8 months of the year because the climate is simply too hot here. Help. Please!!
I have no blower motor at all. Well. Let me rephrase. It doesn't run 99.9% of the time. Doesn't matter if it's heat, AC, defrost... Nothing. It has blown twice for short periods which tell me the electrical system is mostly intact. But it only blows out the defrost vent when it did.
First I found the common vacuum leak that all vans have due to GM using that dumb nylon plastic that turns to a mess after its exposed to engine bay heat for any extended time. No change. Then I found the other rubber hoses all deteriorated. I believe I have those ran correctly as well.
Second I replaced the resistor pack/card located in the blower housing. It didn't look great. But alas. Still no change.
So I got a new blower motor as well. Nada.
So then I checked all fuses (shoulda done first I know) but found no issues. I even checked that they had good connection. I ohm'd out the ground and found that was fine as well. Then I swapped AC relays with no luck. So I'm assuming those are fine.
Finally I tried a junk yard Fan/AC/Vent switch which was in very very good shape. I swapped it out in the parking lot of the junk yard and.... Nothing. Then when I was about halfway home the fan came on randomly through my defrost vents! It was on med-high and dumb me I checked to see if all fan speeds worked, and it stopped the second I moved the switch and never came back.
So I went back online and found the resistors sometimes fail and take connectors with. I inspected all the connectors I could find including at the resistor pack, behind the battery. And all that go to the switch in the dash. All connections look fine. I tried manually jumping out my switch in the dash, nothing. And it appears I'm only getting 1.7-2.0v at the resistor pack.
What am I missing guys? I love this van so far, but if I can't get even some air moving around, I'm not going to be able to drive it 8 months of the year because the climate is simply too hot here. Help. Please!!