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

A/C Blower Fan

Thread Tools
 
Search this Thread
 
Old Aug 11, 2006 | 10:35 PM
  #1  
RJVette23's Avatar
RJVette23
Thread Starter
Advanced
20 Year Member
All Eyes On Me
 
Joined: Dec 2001
Posts: 64
Likes: 0
From: Raleigh NC
Default A/C Blower Fan

I've reviewed many of the threads to research my problem, but none seem to explain what I've got...

First....86 Indy Pace Car, Manual Climate Control.

When I first start the car and turn on the A/C everything works fine. The air is cold and the fan "speed" is good. About 30 minutes into the drive, the air is still cold, but the fan "speed" starts to slow down. I can hear the fan blowing but the air is not flowing very good. The diverter keeps the air in the dash vents....no air at defrost or floor. It just seems to loose something between the inlet and the vents.


Any ideas........???
Reply
Old Aug 12, 2006 | 06:05 AM
  #2  
toptechx6's Avatar
toptechx6
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Default

Originally Posted by RJVette23
I've reviewed many of the threads to research my problem, but none seem to explain what I've got...

First....86 Indy Pace Car, Manual Climate Control.

When I first start the car and turn on the A/C everything works fine. The air is cold and the fan "speed" is good. About 30 minutes into the drive, the air is still cold, but the fan "speed" starts to slow down. I can hear the fan blowing but the air is not flowing very good. The diverter keeps the air in the dash vents....no air at defrost or floor. It just seems to loose something between the inlet and the vents.


Any ideas........???
Your post is a little confusing do you mean fan "speed" or airflow? If the fan speed sounds normal the evaporator may be freezing restricting airflow. Sometimes this condition will show up as an usual amount of condensation water after you shut the car off. I don't know how evaporator temp is controlled on your car, some systems cycle the clutch others regulate refrigerant flow. SunCR seems to be our resident A/C guru, I'll bet he can help, good luck.
Reply
Old Aug 12, 2006 | 07:55 AM
  #3  
RJVette23's Avatar
RJVette23
Thread Starter
Advanced
20 Year Member
All Eyes On Me
 
Joined: Dec 2001
Posts: 64
Likes: 0
From: Raleigh NC
Default

Sorry for the confusion.....

The airflow decreases but I can still hear the fan blowing under the dash.

Thanks for your input
Reply
Old Aug 12, 2006 | 08:17 AM
  #4  
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: 20,275
Likes: 236
From: Summerland B.C. Canada
Default

Originally Posted by toptechx6
Your post is a little confusing do you mean fan "speed" or airflow? If the fan speed sounds normal the evaporator may be freezing restricting airflow. Sometimes this condition will show up as an usual amount of condensation water after you shut the car off. I don't know how evaporator temp is controlled on your car, some systems cycle the clutch others regulate refrigerant flow. SunCR seems to be our resident A/C guru, I'll bet he can help, good luck.
That sounds logical. Don't know if this will help you but it is from my 86 manual.
http://members.shaw.ca/dankai/Air%20...0%20Manual.pdf
Reply

Get notified of new replies

To A/C Blower Fan





All times are GMT -4. The time now is 08:51 AM.

story-0
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-1
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-2
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-3
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
story-4
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-5
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-6
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-7
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-8
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-9
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE