2 ?'s - The 1947 - Present Chevrolet & GMC Truck Message Board Network

meathead95 · 07-30-2003, 08:44 PM

if my cowl has a bunch of debri in it will it cause my defroster not to blow very well? because it doesnt blow out much air in the new blazer, but the motor sounds like it runs like a s.o.b. the other question is are the pitman arms on power and manual steering boxes the same? or will they bolt in place of one another without having to change the tie rod end that goes into it?
Thanks,
Keith

jhow66 · 07-30-2003, 10:03 PM

A.C. or just heater--don't know on arm.

meathead95 · 07-30-2003, 10:24 PM

a/c

jhow66 · 07-30-2003, 10:31 PM

Have you checked to see if your hoses are off? Does one side blow more then the other? Does AC vents blow air ok-heater vent? Check to see if defrost cable is working--if not flapper door will not close for it to send air to defrost vents.

meathead95 · 07-30-2003, 10:36 PM

the ac doesnt have a compressor i just cant get it to blow any volume of air it barely blows anywhere

jhow66 · 07-30-2003, 10:50 PM

I would say your AC core & heater core are stopped up in the boxes. My truck came out of S.C. and was full of pine needles. Can't remeber how I got them out (1991) but must have taken AC box apart under hood (not hard to do). Does the cold-hot lever work--it should move the lever on top of the AC box under hood. This lever moves the flapper that covers heater core when AC is in use and vice versa for heater. this will be where all the trash is--was in mine --works fine now. Hope this helps. P.S. sharp truck in your avatar.

cdowns · 07-30-2003, 10:51 PM

two common problems:
#1 the flapper(diverter) box isn't working that's inside the cab at the floorboard just a few screws holding on plus the control cables LMC and other vendors have replacements
#2 requires taking off the box under the hood where the fan is cause they're sometimes filled with crap and dead mice not allowing any air to circulate
HOPE IT'S #1

73stepside · 07-31-2003, 01:59 AM

the saels could be gone too not allowwing the air to blow thru the vents. mostof the air would be blown thru the seams

Z-72 · 07-31-2003, 08:57 AM

Regaurdless of the air problem, get that cowl cleaned out, I can hear it trying to rust from here.

VTKidder · 07-31-2003, 09:14 AM

I didn't hear mine rusting til it was too late. Clean it out!!!

big blue 72 · 07-31-2003, 12:24 PM

ine didnt blow any air either till i found the HUGE mouse pile of tissues, leaves, pine needles and other junk that collects in the heater box.

71Chev · 07-31-2003, 01:35 PM

power and non power pitman arms are not the same.

07-30-2003, 10:24 PM	#3
meathead95 computer illiterate Join Date: Jan 2001 Location: Des Moines, IA Posts: 6,446	a/c __________________ 72 2wd blazer 72 swb 4x4

07-30-2003, 10:31 PM	#4
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Have you checked to see if your hoses are off? Does one side blow more then the other? Does AC vents blow air ok-heater vent? Check to see if defrost cable is working--if not flapper door will not close for it to send air to defrost vents. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

07-30-2003, 10:36 PM	#5
meathead95 computer illiterate Join Date: Jan 2001 Location: Des Moines, IA Posts: 6,446	the ac doesnt have a compressor i just cant get it to blow any volume of air it barely blows anywhere __________________ 72 2wd blazer 72 swb 4x4

07-30-2003, 10:50 PM	#6
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	I would say your AC core & heater core are stopped up in the boxes. My truck came out of S.C. and was full of pine needles. Can't remeber how I got them out (1991) but must have taken AC box apart under hood (not hard to do). Does the cold-hot lever work--it should move the lever on top of the AC box under hood. This lever moves the flapper that covers heater core when AC is in use and vice versa for heater. this will be where all the trash is--was in mine --works fine now. Hope this helps. P.S. sharp truck in your avatar. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

07-30-2003, 10:51 PM	#7
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	two common problems: #1 the flapper(diverter) box isn't working that's inside the cab at the floorboard just a few screws holding on plus the control cables LMC and other vendors have replacements #2 requires taking off the box under the hood where the fan is cause they're sometimes filled with crap and dead mice not allowing any air to circulate HOPE IT'S #1 __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

07-30-2003, 08:44 PM	#1
meathead95 computer illiterate Join Date: Jan 2001 Location: Des Moines, IA Posts: 6,446	2 ?'s if my cowl has a bunch of debri in it will it cause my defroster not to blow very well? because it doesnt blow out much air in the new blazer, but the motor sounds like it runs like a s.o.b. the other question is are the pitman arms on power and manual steering boxes the same? or will they bolt in place of one another without having to change the tie rod end that goes into it? Thanks, Keith __________________ 72 2wd blazer 72 swb 4x4 Last edited by meathead95; 07-30-2003 at 10:24 PM.

07-30-2003, 10:03 PM	#2
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	A.C. or just heater--don't know on arm. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

07-31-2003, 01:59 AM	#8
73stepside Registered User Join Date: Feb 2002 Location: Moore OK 73160 Posts: 974	the saels could be gone too not allowwing the air to blow thru the vents. mostof the air would be blown thru the seams __________________ 04 GMC Sierra RCSS 70 CST LWB 04 HD Sportster 1200 Custom

07-31-2003, 08:57 AM	#9
Z-72 Registered User Join Date: Dec 2002 Location: south-east kansas Posts: 68	Regaurdless of the air problem, get that cowl cleaned out, I can hear it trying to rust from here. __________________ 72-C-10-LWB-Big Block-TH400- PosiTrac Leaf Springs- A Dark Green Ford Eaten Machine. And those are not rust holes, there cooling vents..

07-31-2003, 09:14 AM	#10
VTKidder Registered User Join Date: May 2003 Location: Vermont Posts: 996	I didn't hear mine rusting til it was too late. Clean it out!!!

07-31-2003, 12:24 PM	#11
big blue 72 Senior Member Join Date: May 2002 Location: hamilton,ohio,usa Posts: 1,499	ine didnt blow any air either till i found the HUGE mouse pile of tissues, leaves, pine needles and other junk that collects in the heater box.

07-31-2003, 01:35 PM	#12
71Chev Senior Member Join Date: Dec 2000 Location: Indiana Posts: 3,074	power and non power pitman arms are not the same. __________________ 71 Chevy CST Long Fleet 350/350/3.07 leaf rear.

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