A/C blower not working need location

Tiny
COREYSIMPSON
  • MEMBER
  • 1994 HONDA PRELUDE
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 190,000 MILES
My air conditioner will only start blowing if I hit a bump and it catches the front end and jars the car, then it starts blowing, same way with the heater, and if I am going about 50 or higher cold air will seep in through the vents. What could cause this and where is the blower located in my car so I can check it?
Thursday, June 3rd, 2010 AT 12:25 PM

2 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi coreysimpson,

The blower motor, located under the glove box to the far end of the dash is failing and is time for a replacement.

The carbon brushes are running out and vibrations would allow the brushes to come into contact and make the blower work.
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Thursday, June 3rd, 2010 AT 1:44 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

The blower motor is under the dash on the passenger side of the vehicle. See pic 1.

What you described sounds like a loose connection or the motor itself is going bad. What to do is this. Locate the blower motor. Turn the fan on and move the wiring around on the connector at the motor. If nothing changes, tap on the motor itself and see if it starts working.

If you find the motor is the issue, here is a link that shows in general how one is replaced:

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Here are the directions specific to your vehicle. The remaining pictures correlate with the directions.

___________________________________________________________

1994 Honda Prelude L4-2.2L SOHC
Removal and Installation
Vehicle Heating and Air Conditioning Blower Motor Service and Repair Procedures Blower Unit Removal and Installation
REMOVAL AND INSTALLATION
Blower Unit Replacement

pic 2

CAUTION:
- All SRS wire harnesses are covered with yellow insulation. Before you disconnect any part of an SRS wire harness, connect the short connectors.
- Whenever the ignition switch is ON (II), or has been turned OFF for less than three minutes, be careful not to bump the SRS unit; the airbags could accidentally deploy and cause damage or injuries.

NOTE: The original radio has a coded theft protection circuit. Be sure to get the customer's code number before:
- disconnecting the battery.
- removing the No.43 (10 A) fuse from the under- hood fuse/relay box.
- removing the radio.

After service, reconnect power to the radio and turn it on. When the word "CODE" is displayed, enter the customer's 5-digit code to restore radio operation.

NOTE: The blower motor, re-circulation control motor, and blower resistor can be replaced without removing the blower unit.

1. Remove the glove box and glove box frame.

WITHOUT AIR CONDITIONING

pic 3

2a. Remove the four self-tapping screws and the heater duct.

WITH AIR CONDITIONING

pic 4

2b. Remove the evaporator.

3. Disconnect the connectors from the blower motor, blower resistor, and re-circulation control motor.

pic 5

4. Remove the two bolts, nut and blower unit.
5. Install in the reverse order of removal, and make sure there are no air leaks.

________________________________

Let me know if this helps or if you have other questions.

Take care,
Joe
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Wednesday, August 12th, 2020 AT 10:40 PM

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