stupid blower repairs, on and on.

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LaGrasta
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stupid blower repairs, on and on.

Post by LaGrasta »

I've replaced the blower resister thing 3 times, once with a new fan too. Once again, the top speed does not work and we have to slam the dash whenever it stops blowing. Slam, slam, slam and it starts up again.

Advice, direction please…
1998 Astro, 246,000 miles

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macsveen
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Re: stupid blower repairs, on and on.

Post by macsveen »

I would say that if vibration from slamming on the dash gets it to work, then it might be the switch or the connector to the switch.
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Herbie
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Re: stupid blower repairs, on and on.

Post by Herbie »

If it's the top speed, doesn't that mean that the High Speed relay is (should be) engaged? Whacking the dash might be jostling the relay, maybe?
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Re: stupid blower repairs, on and on.

Post by LaGrasta »

even slamming doesn't start the high speed, only the other speeds
1998 Astro, 246,000 miles

K&N air filter
TruCool trans cooler
2" Overland lift & 15" BFG Terrain, 3.73 gears
JET Performance SCU-2000 (Speed Control Unit)
Gabriel Ultra shocks, rear AirLift bags & sway bar
Draw-Tite Dual Port Hitch System, hitch-mounted bike rack (4), hitch-mounted cargo tray, Thule roof-mounted cargo box

macsveen
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Re: stupid blower repairs, on and on.

Post by macsveen »

Herbie - Just curious, where is the high speed relay? Is it in a different location than the one under the hood?
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Re: stupid blower repairs, on and on.

Post by Herbie »

macsveen wrote:Herbie - Just curious, where is the high speed relay? Is it in a different location than the one under the hood?
As far as I know, it's part of the same assembly as the resistor pack, but electrically somewhat "isolated". The selector switch at the dash just enables the high-speed mode which turns on a different wire that bypasses the resistor pack.

I guess I misspoke when I said whacking dash jostled the "relay", I meant the switch/wire pack that has a whole bundle of wires going to the resistor pack under the hood. I'm still learning some of this myself, I'm having intermittent blower issues where it will just "come and go".

Here's a good video I just watched on the resistor pack where the guy also walks through the electrical diagram:
https://www.youtube.com/watch?v=if21Jwg5-yI
"My minivan is cooler than your bro-truck"
2003 Astro AWD Astrolander/ZMB - GTRV Top Transplant, 4" OLV Lift, NP233 T-case, evolving interior
1995 Safari GTRV Organ donor - gutted and gone.
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