Chevy Astro AC/Heater Blower Vent con...
Richard L

Canada

#61 Sep 16, 2007
I have a 2004 astro cargo ..vent only blows up on windshield ..where do I find these hoses..had the same problem on my 2000 astro but sold it as is LOL.....I hope someone can help me ..lol
Devane

Raleigh, NC

#62 Sep 18, 2007
I have a 1992 Astro. The issue I am having is I don't have any "continuous power" meaning the radio doesn't keep time, interior lights won't work, lighter won't work, and it takes a long time for the van to start (20 - 30 sec). Once the van starts, all of the above items work fine. Any ideas?
Dick E Jones

Kansas City, MO

#63 Oct 2, 2007
I have A 1998 chevy astro the heater blower works on everything but high please someone help I went to the junk yard and got the same one and had the same problem
jerome

Dallas, TX

#64 Oct 4, 2007
hey Dick..did you get another blower or another control switch ? the switch is likely to be the problem. The blower only respond to a given signal. When a blower goes bad, it is easy to diagnosed, but if it works on 3 speed and not the 4th one, then it is not getting the signal it needs. Control switch is probably melting, and the ground wire at the relay is probaly bad too. ou may have to bypass it.
Dick E Jones

Kansas City, MO

#65 Oct 10, 2007
I got another switch and it did the same thing please help

Since: Oct 07

Seattle, WA

#66 Oct 15, 2007
I used the advice from this forum to fix the heater controls on my 2000 Astro during the weekend. Like a lot of the contributors my heater was stuck with the air coming out of the defroster vents only. I pulled the inside engine cover off and started looking for a vacuum line on the engine that was broke or disconnected. Couldn't determine which line was the vacuum so I carefully re-read the posts. I finally found it where other posts said to look. The connection to the engine was on the drivers side of the engine(left side), just to the left of the air intake duct into the intake manifold. Follow the duct from the air cleaner back to where it enters the top of the engine. I was looking for a larger maybe 1/4 or 3/8 inch line but it is actually only about 1/8 inch, black, hard plastic line. The connection to the engine is a right angle rubber boot about 1/4 inch (looks like a miniature spark plug boot). The line goes across the front of the engine to the right hand side and then up to a multi port vacuum connection on the side of the Air conditioner box, under the hood. The connection at the AC box is the same right angle connector as on the engine. I found the line broken in 2 places on the right side of the engine just as it turned to go to the AC box. I bought some rubber vacuum line sized big enough to allow the hard platic line to be inserted into it. I cut the old line leaving about 3 inches on each end next to the connectors and inserted those ends into the new hose and clamped with zip ties. So I now had a new line with the original connectors and a short length of original line at each end. It fixed the problem. One intersting thing I noticed with the engine cover off was that I had a big bunch of loose insulation material around the base of the distributor. I suspect it was an old nest from a rodent that had been up there but was wondering if anyone else had that on their van.
mayo

Kemptville, Canada

#67 Oct 18, 2007
My '97 Astro blower switch works in the top speed and not in the lower settings. Do I need to replace the blower or the speed control? obvious next question to the above answer. How does one replace the the faulty item? Thanks
Namron

Burlington, Canada

#68 Oct 18, 2007
Thanks for the summary and great description. I have been procrastinating about doing this task for some time, but winter is impending!As I reviewed the posts I was preparing for the investigate and review post process, now I'm pretty confident it will be resolved in one try and I even know what materials to aquire in advance.
Cheers!
garyd wrote:
I used the advice from this forum to fix the heater controls on my 2000 Astro during the weekend. Like a lot of the contributors my heater was stuck with the air coming out of the defroster vents only. I pulled the inside engine cover off and started looking for a vacuum line on the engine that was broke or disconnected. Couldn't determine which line was the vacuum so I carefully re-read the posts. I finally found it where other posts said to look. The connection to the engine was on the drivers side of the engine(left side), just to the left of the air intake duct into the intake manifold. Follow the duct from the air cleaner back to where it enters the top of the engine. I was looking for a larger maybe 1/4 or 3/8 inch line but it is actually only about 1/8 inch, black, hard plastic line. The connection to the engine is a right angle rubber boot about 1/4 inch (looks like a miniature spark plug boot). The line goes across the front of the engine to the right hand side and then up to a multi port vacuum connection on the side of the Air conditioner box, under the hood. The connection at the AC box is the same right angle connector as on the engine. I found the line broken in 2 places on the right side of the engine just as it turned to go to the AC box. I bought some rubber vacuum line sized big enough to allow the hard platic line to be inserted into it. I cut the old line leaving about 3 inches on each end next to the connectors and inserted those ends into the new hose and clamped with zip ties. So I now had a new line with the original connectors and a short length of original line at each end. It fixed the problem. One intersting thing I noticed with the engine cover off was that I had a big bunch of loose insulation material around the base of the distributor. I suspect it was an old nest from a rodent that had been up there but was wondering if anyone else had that on their van.
rjm

Royersford, PA

#69 Oct 23, 2007
hey everyone, if your vents are not changing, it is DEFINITLY the vaccum line they are talking about. i had this exact problem after my mechanic replaced my distributer cap. on my car the vaccum line enters the engine around the distributer cap, and this makes sense bc he mustve knocked the vaccum line off while changing the cap... it was definitly the problem. after he plugged the hose back into the vaccum port my vents worked perfectly.
Help

AOL

#70 Nov 10, 2007
Chevy 2000 astro has blower problem. The problem is that the part that is suppose to be the replacement part is not the same. Does anyone know where to find a diagram of the Main Blower and the Resistor?
On another note, does anyone else experience problems with the gas gauge not working?
Reg

Kamloops, Canada

#71 Dec 15, 2007
The cause is probably a broken vacuum line. 2 black vacuum lines come thru the firewall behind the battery and disappear into the electrical conduit which goes across to the passengers side. They exit the conduit on the passengers side, one goes to the heat control valve and the other goes to a "T" at the accumulator along side the air intake.From the "T" at the accumulator it goes to another "T" which is connected to the intake manifold (the vacuum source) and then on to feed the cruise control. The most likely location of the break will be in the sharp bend behind the battery. If one of these lines are broken you will not get heat from the rear heater only from the front and in the defrost mode only. 1993 Astro.
Hope this helps.
Reg
miles

Redondo Beach, CA

#72 Dec 23, 2007
I have a 96 Chevy Astro with heater problems. I've replaced the vacuum lines and seem to have fixed the problem until I noticed that a solenoid that opens and closes the valve to the heater hoses that lead to the heater core seem to work intermittently when the "cold to hot" dial is turned. Can I rebuild this or simply replace? Please help.
JRADERTX

Cincinnati, OH

#73 Feb 18, 2008
jerome wrote:
hey Dick..did you get another blower or another control switch ? the switch is likely to be the problem. The blower only respond to a given signal. When a blower goes bad, it is easy to diagnosed, but if it works on 3 speed and not the 4th one, then it is not getting the signal it needs. Control switch is probably melting, and the ground wire at the relay is probaly bad too. ou may have to bypass it.
DID YOU EVER FIND OUT WHAT IT WAS I HAVE THE SAME THING GOING ON,LET ME KNOW
Erwin

Wauseon, OH

#74 Mar 1, 2008
smhardegree wrote:
i have a 2000 astro and my air is blowing out of defrost and right floor nothing comes out of the front vents what could my problem be? any info would help
Thanks and God Bless!
I had swame problem, found the plastic cowlinng was seperated on passaenger side. Dealership said nothing was wrong, and put duck tape over it. Anyway I had to screw the flanges together to keep it from leaking. There is foam between the flanges but it didn't seal it.
Erwin

Wauseon, OH

#75 Mar 1, 2008
My fan seems to make a lot of noise, like a rumble. It seeems like the bearings might be so bad that they allow the squirrl cage to rub somewhere. Where is the fan? Also sometimes the fan won't start unless you get going and some air is pushed throught it, maybe it gets started by teh draft in the car.
Guy

Kanata, Canada

#76 Mar 10, 2008
99 Astro Van, Blower does not work on high??? what's up with that! HELP.
SPARKS

Eastpointe, MI

#77 Mar 11, 2008
1997CHEVY ASTRO AC/HEATER VENTS NOT WORKING -BEGAN ABOUT 2 MO. AGO WORKING SPORADICALLY 50% OF THE TIME W/WEAK OUTPUT-
DEWEY JONES

Tampa, FL

#78 Mar 14, 2008
BLOWER GROUND WIRE, SOUNDS LIKE THE CULPRIT.

( FOUND BEHIND RADIATOR RESIVOR )
DEWEY JONES

Tampa, FL

#79 Mar 14, 2008
SOUNDS LIKE SWTCH!
DEWEY JONES

Tampa, FL

#80 Mar 14, 2008
CHECK BLOWER GROUND!

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