Connect

Car Pictures

Shopping

Classifieds

News & Articles

Car Forums

Automotive Links

(Bookmark CarJunky)

	Auto Repair Home	SEARCH POSTS	WHO'S ONLINE	LOG IN

Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   1989 toyota pickup 3.0 crank no start I have a 1989 toyota pickup 3.0 crank no...   Strut spring orientation and strut mount tension nut 2017 Nissan rogue awd 2.5 L Put in Monro...   Transmission stuck in part, I have tried everything So I'm working on my elderly fathers 201...   2017 dodge journey LED headlights on/off randomly Year of vehicle 2017 Make of vehicle dod...   Kia Soul starter replacement issues! Okay so my car is a 2010 Kia soul 2.0 en...   Please Help - Knock sound & engine fail Hi all, Hoping to get some insight and ...   multiple warning lights 2013 GMC Terrain 130,000 miles 4 cylinde...   03 alero no low speed blower Good day everyone, I have a 2003 Olds a...   04 Chevy 2500hd tail light issues Help!!! I have changed my combo switch...   1999 Grand Caravan Sport not starting. Hi. I'm new here. I hope someone can hel...

'03 astro van-blower relay/fan speed? Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Automotive Wiring and Electrical customcoloreffex Novice Aug 29, 2006, 11:30 PM Post #1 of 4 (7646 views) '03 astro van-blower relay/fan speed? Sign In I have an '03 Chevy astro van with a climate control problem. The fan speed only blows on the low settings and completely stops when you put it in the high postion. Also the output is stuck in defrost, meaning air is only comming out of the upper dash blowing on the windshield. As you move the selector and pass by the max/norm a/c then bi-level/floor it will, as I can hear it, turn the a/c compressor on and off but the air output will not change. Thanks for your help! DanD Veteran / Moderator Aug 30, 2006, 2:49 AM Post #2 of 4 (7640 views) Re: '03 astro van-blower relay/fan speed? Sign In THE high speed for the fan gets its power from another source through the high speed relay and I believe the relay on this year of van is part of the blower motor resistor assembly. It’s bolted to the heater plenum under the hood, left of the blower motor. I’ll check when I can get to my manuals, later on when I’m back at the shop (I’m at home right now). If I’m mistaken I’ll post its proper location. OK I checked and the resistor is part of the resistor assembly. The fuse for the high-speed relay is a 30 amp fuse; you’ll find it in the under hood fuse panel; it should be labeled FRT HVAC. Check it but most times the problem is this resistor/relay assembly As for the air always coming out of the defroster; the vacuum line that supplies engine vacuum to the mode switch is likely broken under the hood. This vacuum line is made out of hard (black) plastic and becomes very brittle and easily breaks from engine vibration. It connects to the intake manifold close to the throttle side; comes across the front of the intake, over to the right inner fender to a round vacuum reservoir. I guess if you check for vacuum at the reservoir with the engine running that will tell you whether the line from the engine or the one heading to the dash is the one to chase. One last thing; this vacuum line looks a lot like a black wire; so don’t be chasing the wrong thing. LOL Dan. Canadian "EH" (This post was edited by DanD on Aug 30, 2006, 3:28 AM) repairdad User Dec 18, 2007, 11:22 AM Post #3 of 4 (7331 views) Re: '03 astro van-blower relay/fan speed? Sign In   Thank You DanD repairdad User Jul 31, 2009, 2:44 AM Post #4 of 4 (7079 views) Re: '03 astro van-blower relay/fan speed? Sign In   Good Day Thank you for the valued information. I bypassed the corroded/ faulty card with a 12vdc relay and works in high speed only. Been ok for some time now.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

Search this forum this category all forums for All words Any words Whole Phrase (options)

Privacy Sitemap