C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Weak blower flow

Thread Tools
 
Search this Thread
 
Old Aug 19, 2006 | 06:52 PM
  #1  
Ibuyvettes's Avatar
Ibuyvettes
Thread Starter
Melting Slicks
 
Joined: Jul 2004
Posts: 3,235
Likes: 1
From: Sterling Va
Default Weak blower flow

87 coupe I can hear the blower fan blowing fine but barely any flow in the passenger compartment.

What do I do?
Reply
Old Aug 19, 2006 | 07:15 PM
  #2  
VetteTech81's Avatar
VetteTech81
Le Mans Master
15 Year Member
 
Joined: Nov 2002
Posts: 7,179
Likes: 2
From: Charlotte, NC
Default

Originally Posted by Ibuyvettes
87 coupe I can hear the blower fan blowing fine but barely any flow in the passenger compartment.

What do I do?
I would maybe pull the blower and inspect the area around it for debris or anything... I know I've seen on C5's mice make nests inside of the blower cage.... maybe there is some build up of leaves or someting inside?

Good Luck!
-=Rick
Reply
Old Aug 19, 2006 | 07:55 PM
  #3  
AGENT 86's Avatar
AGENT 86
Team Owner
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Active Streak: 90 Days
 
Joined: Jan 2003
Posts: 20,297
Likes: 240
From: Summerland B.C. Canada
Default

Here is some info on the C68 and C60 climate controls. These should help you diagnose where the problem is.
http://members.shaw.ca/dankai/AC%20Electronic.pdf
http://members.shaw.ca/dankai/Air%20...0%20Manual.pdf
Reply
Old Aug 20, 2006 | 03:57 PM
  #4  
SunCr's Avatar
SunCr
Le Mans Master
10 Year Member
 
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Default

I'd start by jumping the blower directly to the battery first. That way you can rule out it's circuitry, but also check the wires for discoloration at the connection which would indicate a voltage drop (solder the terminals to the wires to fix it). If it's the same connected directly to the battery, the problem may be a plugged up Evaporator (usually because it's been leaking), or the evaporator housing (feel around it for air flow), or the insulation sealing up the duct work (take off the passenger's side hush panel and see if there's a stream of air blowing pass the ECM).
Reply
Old Aug 20, 2006 | 05:13 PM
  #5  
aminnich's Avatar
aminnich
Le Mans Master
 
Joined: Jan 2006
Posts: 6,564
Likes: 6
From: Woodstock Georgia
Default

There have been a number of recent posts about debris clogging the evaporator core and causing very low air flow thru the ducts. You would have to remove the blower motor to clear it out.
Reply
Old Aug 20, 2006 | 06:07 PM
  #6  
vader86's Avatar
vader86
Team Owner
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2001
Posts: 62,137
Likes: 1,727
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Default

Run a search for Evaporator Core threads, and scorp508.

A clogged up evap will really affect airflow.
Reply

Get notified of new replies

To Weak blower flow





All times are GMT -4. The time now is 06:54 AM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE