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02-24-2012
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#1 |
 
Join Date: Nov 2011
Location: Salt Lake City, Utah
Posts: 169
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Blower running at 1 speed
The heater and A/C fan always runs at the same speed. I have replaced the module, but it still runs at only 1 speed. Any ideas where to go next. I have had the car since November and it was this way when I bought it. 1991 with 50k on it.
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91 ZR-1 Red on Red #922 |
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02-24-2012
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#2 | |
 
Join Date: Feb 2006
Location: San Antonio area
Posts: 1,179
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Re: Blower running at 1 speed
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And what module did you replace?
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“Buy the best example of what you want, and pay whatever it takes. That way, you cry only once.” ~ Bruce Meyer |
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02-24-2012
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#3 |
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Join Date: Nov 2011
Location: Salt Lake City, Utah
Posts: 169
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Re: Blower running at 1 speed
Yes, only 1 speed. When it is on auto it blows 1 speed. When ii try to change speed manually with the fan arrows nothing happens. It just blows at the same speed. I replaced the blower module in the engine compartment.
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91 ZR-1 Red on Red #922 |
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02-25-2012
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#4 |
   
Join Date: May 2007
Location: Peoria, AZ
Posts: 9,155
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Re: Blower running at 1 speed
Replace the blower unit. Mine had the same problem. I could tap the outside of the fan blower housing and the fan speed would actually pickup.
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director  91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V |
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02-25-2012
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#5 |
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Join Date: Nov 2011
Location: Salt Lake City, Utah
Posts: 169
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Re: Blower running at 1 speed
I guess that would be the next part to replace. Thanks goldcylon
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91 ZR-1 Red on Red #922 |
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02-25-2012
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#6 |
Join Date: Jul 2004
Location: Kalamazoo MI
Posts: 1,753
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Re: Blower running at 1 speed
If you need those switches on that are in the engine compartment on the AC cover I have them if you need them
Not sure what they are retail but Lets say $50 plus shipping.
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JOHNNY P Currently own 90 ZR-1 #845 DRM 500 engine package 90 #226 Parts car Hit me up if you need anything. |
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02-25-2012
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#7 | |
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Join Date: Feb 2006
Location: San Antonio area
Posts: 1,179
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Re: Blower running at 1 speed
Quote:
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“Buy the best example of what you want, and pay whatever it takes. That way, you cry only once.” ~ Bruce Meyer |
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02-25-2012
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#8 |
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Join Date: Nov 2011
Location: Salt Lake City, Utah
Posts: 169
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Re: Blower running at 1 speed
The display will change fan speed numbers but the fan runs at a constant speed. I have pulled the fuses by the glove box but nothing changes.
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91 ZR-1 Red on Red #922 |
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02-26-2012
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#9 |
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Join Date: May 2007
Location: Peoria, AZ
Posts: 9,155
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Re: Blower running at 1 speed
Yep been there and done that. Replace the blower unit which is not ZR-1 specific You can find them all day for any C4 NIB for less than $50. Some with or without the squirrel case which you can simply reuse. I suggest relaxing the bolts on the inner fender well obviouslly on the passenger side. Removing the blower bolts is easy but be mindful of the orifice drain tube position on the underside of the unit. If you dont relax the inside of the fender well you will not have enough room to pull the unit out due to the squirrel cage gets in the way. Very simple job to do and should not take you any more than 30 mins.
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V Last edited by GOLDCYLON; 02-26-2012 at 03:27 AM. |
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02-26-2012
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#10 |
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Join Date: Nov 2011
Location: Salt Lake City, Utah
Posts: 169
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Re: Blower running at 1 speed
OK. This little problem is kicking my a**. I just replaced the blower motor. Now it seems to move a little more air, but it still runs at only 1 speed! Anyone have any other ideas? This shouldn't be as hard as it is. Thanks.
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91 ZR-1 Red on Red #922 |
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