1995 Dodge Intrepid heater blows warm air for a split secon

Tiny
CUBSCOUT1999
  • MEMBER
  • 1995 DODGE INTREPID
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 139,000 MILES
Ok well when I turn my heater on it blows warm air for just a seconds then goes to blowing cold air, I have flushed the system 5 times both ways, both hoses going to the heater core are warm, Does the blend door need calibrated? To double check what I think I know, what is the blend door calibration procedure where you pull a fuse for a 1995 Intrepid?
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Saturday, December 6th, 2008 AT 12:09 PM

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Tiny
BMRFIXIT
  • EXPERT
Let me know if this help
good luck
Jack O

A/C-HEATER SYSTEM - MANUAL -1995 Dodge Intrepid

NOTE: Any change in switch positions will abort calibration. Control panel EEPROM memory will store calibration values. Default values will be used if a problem is detected.

IN-VEHICLE CALIBRATION
1. Mode and temperature door calibration compensates for mechanical differences in actuators, A/C heating unit and linkages. Mode door selector, temperature selector, rear defogger switch LED and blower switch are used to set calibration.
2. To enter calibration, start engine and set parking brake. Turn blower switch on. Set temperature selector to full cold position and mode door selector to defrost position. A/C and rear defogger switches can be in ON or OFF position. Depress and hold rear defogger switch. After 3-5 seconds, rear defogger LED will flash, indicating calibration is taking place. Release button when LED begins to flash. If LED goes out after approximately 30 seconds, calibration is complete and system is okay. LED will stay on steady if calibration is unsuccessful.
3. To exit calibration and return to normal operation, change position of any one of the following: temperature selector, A/C switch, rear defogger switch or blower switch.

A/C-HEATER SYSTEM - MANUAL -1995 Dodge Intrepid

NOTE: The manual A/C-heater system can be diagnosed using either the Diagnostic Readout Box (DRB) scan tool or vehicle control panel display diagnostic mode. For DRB usage procedures, see TESTING.

FUNCTIONAL TEST
Entering Functional Test
To enter calibration, start engine and set parking brake. Turn blower switch on. Set temperature selector to full cold position and mode door selector to defrost position. A/C and rear defogger switches can be in ON or OFF position. Depress and hold rear defogger switch. After 3-5 seconds, rear defogger LED will flash. Release button when LED begins to flash. System is now in functional test mode. If LED does not go out after approximately 30 seconds, go to FUNCTIONAL TEST step 1). If LED goes out after approximately 30 seconds, calibration is successful. Go to FUNCTIONAL TEST step 4).
Functional Test
1. Move mode door selector to mix position. If LED goes out, A/C-heater control panel is okay. Go to next step. If LED does not go out, A/C-heater control panel has an internal problem requiring replacement of unit.
2. Move mode door selector to floor position. If LED goes out, temperature door actuator and circuits are okay. Go to next step. If LED does not go out, temperature door actuator and/or circuits have a problem. Repair circuits or replace actuator as necessary. Go to next step.
3. Move mode door selector to bi-level mode position. If LED goes out, mode door actuator and circuits are okay. Go to next step. If LED does not go out, mode door actuator and/or circuits have a problem. Repair circuits or replace actuator as necessary. Recalibrate actuators. See IN-VEHICLE CALIBRATION under ADJUSTMENTS. Go to next step.
4. Before continuing, calibration must be successfully completed. Move mode door selector to mix position. If no problems exist, LED will begin a 2-flash sequence. Repair circuits or replace actuator as necessary. Go to next step.
5. Move mode door selector to floor position. If no problems exist, LED will begin a 3-flash sequence. If LED does not flash as indicated, repair circuits or replace actuator as necessary. Go to next step.
6. Move mode door selector to bi-level position. If no problems exist, LED will begin a 4-flash sequence. If LED does not flash as indicated, repair circuits or replace actuator as necessary. Go to next step.
7. Move mode door selector to panel position. If no problems exist, LED will begin a 5-flash sequence. If LED does not flash as indicated, repair circuits or replace actuator as necessary. Go to next step.
8. Move mode door selector to recirculated panel position. If no problems exist, LED will begin a 6-flash sequence. If LED does not flash as indicated, repair circuits or replace actuator as necessary. Go to next step.
9. Move mode door selector to recirculated bi-level position. If no problems exist, LED will begin a 7-flash sequence. If LED does not flash as indicated, repair circuits or replace actuator as necessary. Go to next step.
10. Move mode door selector to defrost position. Slowly rotate temperature selector clockwise from
cold setting to hot setting. The LED will begin to flash faster and faster as control knob is rotated. Upon reaching full hot setting, LED will go out.
11. Move mode door selector between panel and recirculated panel positions. Ensure outside/recirculated air door moves through full operating range. If door does not function as indicated, repair circuits or replace actuator as necessary.
Exiting Functional Test
To exit calibration or functional test and return to normal operation, change position of any one of the following: temperature selector, A/C switch, rear defogger switch or blower control switch.
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Monday, December 8th, 2008 AT 6:47 PM

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