Question about 1997 Chevrolet Malibu

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1997 Malibu Heater problem

My heater heat but no air comes outt. I changed the fuses, what is the next step I can take without having to take it in?

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This is usually caused by the blower resistor. it is located under dash on pass side. up close to firewall by the blower motor. need to confirm power is not going to fan also if you have power and ground to fan it is bad fan motor. if not most likely a bad resistor

Posted on Dec 05, 2008

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1997 malibu heater is working but only cold air coms out


1. Make sure the coolent is full.
2. Check all the fuses.
3. If all that is okey the Blend Door Actuator (BDA) is most likely the cause.

Mar 09, 2013 | Cars & Trucks

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I have 2000 astro van and I'm not getting heat, I changed thermo stat and flushed heater core. Still no heat, whats the next step?


Feel your heater hoses. If both are hot, the core is circulating. If only one is hot-poor or no circulation of the core.
If the heater core is circulating, the temperature blend door may not be working to let blower air pass across the heater core, and into the vents. If vacuum operated, watch the vacuum valves as you move heater controls-you may spot the problem. Check that the vacuum line from the engine to the control switch is working and still connected. If not operated by vacuum, the controls may have cables to the heater case or may be electrically operated. You'll just have to scope it out. Good luck.

Nov 24, 2012 | Chevrolet Astro Cars & Trucks

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I have a 1997 chev malibu. the heater fan works but the heat is lukewarm at best. any solutions?


step to take

1The water level
2 check the fuse
3 take your car to the shop and have the do a diagnostic test on it because the heater coil maybe going out

Feb 10, 2011 | 1997 Chevrolet Malibu

1 Answer

The rear heater does not heat up when switch is on


Troubleshooting by Symptom Poor Heater System Performance
  1. Start the engine. Allow the engine to idle. Does the engine reach normal operating temperature? If yes, go to the next step. If no, go to step 8.
  2. Allow the engine to idle. Select the FLOOR mode. Select the minimum blower speed and the warmest temperature setting. Feel the temperature of the inlet and outlet heater hoses at the heater core. Does the inlet heater hose feel warmer than the outlet heater hose? If yes, go to step 6. If no, go to the next step.
  3. Install a thermometer into the center I/P PANEL air outlet. Secure a thermometer to the heater core outlet heater hose. Select the PANEL mode. Select the maximum blower speed. Select the warmest temperature setting. Record the temperature at the center I/P PANEL air outlet and at the heater core outlet heater hose. Are the two temperature readings about equal? If yes, go to the next step. If no, go to step 5.
  4. Inspect and repair the cowl, recirc door, and the HVAC module case for cold air leaks. If problems are found and repaired, go to step 9.
  5. Inspect the temperature door operation. Perform any necessary repairs. When repairs are made, go to step 9.
  6. Turn OFF the engine. Backflush the heater core. Start the engine. Select the FLOOR mode and the lowest blower speed. Select the warmest temperature setting. Feel the temperature of the inlet and outlet heater hoses at the heater core. Does the inlet heater hose feel warmer than the outlet heater hose? If yes, go to the next step. If no, go to step 9.
  7. Replace the heater core. When the repair is complete, go to step 9.
  8. Repair the low engine temperature concern. When the repair is complete, go to step 9.
  9. Operate the system in order to verify the repair. If the system operates properly, the repair is complete. If the heater still does not work properly, repeat the entire procedure.
Insufficient Defrosting
  1. Start the engine, select the DEFROST mode, and select the maximum blower speed. Does sufficient air flow from the defroster outlets? If yes, go to the next step. If there is insufficient airflow, go to step 9.
  2. Measure the engine operating temperature. Does the engine reach normal operating temperature? If yes, go to the next step. If the engine does not reach normal operating temperature, go to step 7.
  3. Select the minimum blower speed. Select the warmest temperature setting. Feel the temperature of the inlet and outlet heater hoses at the heater core. Does the inlet heater hose feel warmer than the outlet heater hose? If yes, go to step 10. If the hose temperature is not right, go to the next step.
  4. Test the operation of the A/C compressor clutch. Does the A/C compressor clutch engage? If yes, go to the next step. If the compressor clutch does not engage, go to step 6.
  5. Repair or replace the A/C compressor clutch. When the repair is complete, go to step 13.
  6. Repair the A/C compressor clutch concern and determine if the A/C system is operating within specifications. If yes, go to step 8. If no, go to step 11.
  7. Repair the low engine temperature concern. When the repair is complete, go to step 13.
  8. Inspect for correct operation of the recirculation door. If the door is operating correctly, go to step 13. If the door is not operating properly, go to step 12.
  9. Repair the air delivery concern. When the repair is complete, go to step 13.
  10. Repair the heating concern. When the repair is complete, go to step 13.
  11. Repair the A/C performance concern. When the repair is complete, go to step 13.
  12. Repair the recirculation door concern. When the repair is complete, go to step 13.
  13. Operate the system in order to verify the repair. If the system is operating properly, the procedure is complete. If the system is still not providing proper defrosting, repeat the entire test
. Noise from the HVAC Module
  1. Start the engine. Cycle through all blower speeds, A/C mode settings and temperature control settings. Determine the type of noise, whether it is a scraping, popping, ticking, clicking, chirping or groaning, or an air rush or whistle. Is a scrape or pop noise evident when selecting modes or temperature settings? If yes, go to step 5. If no, go to the next step.
  2. Is a tick/click, chirping, groaning or scraping noise present, but decreases as blower motor speed is decreased? If yes, go to step 5. If no, go to the next step.
  3. Is an air rush/whistle noise evident in all modes but not all temperature settings? If yes, go to step 5. If no, go to the next step.
  4. Is an air rush/whistle noise evident only in defrost or floor mode? If yes, go to step 5. If no, examine for other sounds, repeat step 1.
  5. Remove the I/P trim pad. When complete, go to the next step.
  6. Inspect the airflow doors for proper operation and the ducts for obstructions or foreign materials. Were any of these conditions found? If yes, go to step 9. If no, go to the next step.
  7. Inspect the mode and temperature doors and seals for warping or cracking. Are the doors in normal condition? If yes, go to step 9. If no, go to the next step.
  8. Replace the appropriate door and/or seals. When the repair is complete, go to step 10.
  9. Remove any obstructions or foreign material found. When the repair is complete, go to step 10.
  10. Install the I/P trim pad. When complete, go to the next step.
  11. Operate the system to verify the repair. If system operates without noise, the repair is complete. If noise still exists, repeat the entire procedure.

Jul 21, 2010 | 1999 Chevrolet Astro

3 Answers

My car is not blowing heat...is this possibly due to it having only water in the radiator and no coolant/anti-freeze?


No, that is not going to cause you to have no heat. You have some other problem, be sure the rad. is full. Look at your coolant temp gage if it shows normal temp you should have heat. Try and check any fuses for a blow fuse. Give us more info.

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