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replacing heater core 1998 dodge durango

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1998 Chevy Truck S10/ T10 Blazer 2WD Evaporator Core Service and Repair Manual

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Manual A/C REMOVAL PROCEDURE CAUTION: Refer to Battery Disconnect Caution in Service Precautions. 1. Disconnect the negative battery cable. 2. Remove the right side instrument panel sound insulator. 3. Remove the instrument panel storage compartment. 4. Disconnect the passenger side SIR. 5. Remove the lower right instrument panel mounting bolt. 6. Remove the left and right front speaker grilles. 7. Remove the center instrument panel sound insulator. 8. Remove the left side instrument panel sound insulator. 9. Disconnect the park brake release cable. 10. Remove the knee bolster. 11. Remove the lower left instrument panel mounting bolt. 12. Remove the BCM. 13. Disconnect the driver side SIR. 14. Remove the instrument panel cluster. 15. Remove the radio. 16. Remove the HVAC control assembly. 17. Remove the steering column retaining retaining nuts. 18. Lower the steering column. 19. Remove the instrument panel carrier. 20. Remove the left and right cowl vent grille panels. 21. Disconnect the underhood lamp electrical connector, if equipped. 22. Remove the hood. 23. Remove the VCM. 24. Remove the coolant recovery tank. 25. Remove the heater hoses. 26. Disconnect the electrical connectors from the grille mounted lamps. 27. Remove the right front headlamp assembly. 28. Remove the front bumper. 29. Remove the right wheelhouse panel. 30. Disconnect the radio antenna cable. 31. Disconnect the electrical connector for the horn. 32. Remove the right fender. 33. Remove the evaporator case heat shield, if equipped. 34. Remove the blower motor resistor. 35. Remove the evaporator case bolts and screws. 36. Remove the accumulator. 37. Remove the condenser to the evaporator line fitting. 38. Remove the bolts which retain the evaporator case to the bulkhead. 39. Pull back lightly on the heater case to remove the evaporator case. 40. Remove the evaporator case retaining screws. 41. Disassemble the evaporator case sections, and remove the evaporator core. NOTE: If replacing the evaporator core, remove the expansion (orofice) tube and install it into the new core. INSTALLATION PROCEDURE 1. Install the evaporator core. 2. Assemble the evaporator case sections. 3. Install the evaporator case retaining screws. Tighten to 2.5 N.m (24 in lb) . 4. Install the evaporator core assembly to the vehicle. 5. Install the bolts which retain the evaporator case to the bulkhead. Tighten the bolts to 4.5 N.m (40 lb in) . 6. Install the condenser to the evaporator line fitting. 7. Install the accumulator. 1998 Chevy Truck S10/T10 Blazer 2WD 8. Install the evaporator case bolts and screws. Tighten to 2.5 N.m (24 In in) . 9. Install the blower motor resistor. 10. Install the evaporator case heat shield, if equipped. 11. Install the right fender. 12. Connect the electrical connector for the horn. 13. Install the radio antenna cable. 14. Install the right wheelhouse panel. 15. Install the front bumper. 16. Install the right front headlamp assembly. 17. Connect the electrical connectors to the grille mounted lamps. 18. Install the heater hoses. 19. Install the coolant recovery tank. 20. Install the VCM. 21. Install the hood. 22. Connect the underhood lamp electrical connector, if equipped. 23. Install the left and right cowl vent grille panels. 24. Install the instrument panel carrier. 25. Reposition the the steering column, and install the steering column retaining nuts. 26. Install the HVAC control assembly. 27. Install the radio. 28. Install the instrument panel cluster. 29. Connect the driver side SIR. 30. Install the BCM. 31. Install the lower left instrument panel mounting bolt. 32. Install the knee bolster. 33. Connect the park brake release cable. 34. Install the left side instrument panel sound insulator. 35. Install the center instrument panel sound insulator. 36. Install the left and right front speaker grilles. 37. Install the lower right instrument panel mounting bolt. 38. Connect the passenger side SIR. 39. Install the instrument panel storage compartment. 40. Install the right side instrument panel sound insulator. 41. Connect the negative battery cable. 42. Inspect the system for leaks.

2001 Dodge Durango BLOWER MOTOR RELAYS REPAIR MANUAL

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BLOWER MOTOR RESISTOR 1. Disconnect negative battery cable. Disconnect blower motor resistor harness connector. Using DVOM, check for continuity between all blower motor resistor terminals. If continuity exists between all terminals, go to next step. If continuity does not exist between all terminals, replace faulty blower motor resistor. 2. Check for open or short in circuits between blower motor resistor and heater control panel. Also check for open or short in wire between blower motor resistor and blower motor. BLOWER MOTOR SWITCH 2000 Dakota, 2000 Durango & 2000-01 Ram Pickup 1. Remove Power Distribution Center (PDC) cover. Using DVOM, check for battery voltage at PDC fuse No. 5 (40-amp) on Dakota and Durango; PDC fuse No. 12 (40-amp) on Ram Pickup. If battery voltage exists, go to next step. If battery voltage does not exist, check for open in Red wire between battery and underhood PDC. If Red wire is okay, replace underhood PDC. 2. Disconnect negative battery cable. Remove heater control panel. See HEATER CONTROL PANEL under REMOVAL & INSTALLATION. Disconnect heater control panel cable, electrical and vacuum connectors as necessary. Using DVOM, check for continuity between heater control panel harness connector terminal No. 7 (Black wire on Dakota and Durango; Black/Orange on Ram Pickup) and ground. See Fig. 5 . If continuity exists, go to step 4 . 3. If continuity does not exist, repair open in Black wire or Black/Orange wire between heater control panel 2001 Dodge Durango 2000-01 HEATER SYSTEMS’ ‘RWD Trucks & Vans harness connector terminal No. 7 and ground connector located at lower right corner of instrument panel (Dakota and Durango) or behind center of instrument panel (Ram Pickup). 4. Place heater mode control knob to any position except OFF. Using DVOM, check for continuity between heater control panel terminal No. 7 and terminals No. 3, 4, 5 and 6 while rotating blower motor switch. See Fig. 5 . 5. If continuity does not exist at any terminal, replace faulty heater control panel. If continuity exists as specified, check for open in circuits between heater control panel and blower motor resistor. Also check for an open in circuit between heater control panel and blower motor. See WIRING DIAGRAMS . Fig. 5: Identifying Heater Control Panel Blower Switch Connector Terminals (2000 Dakota & Durango Are Shown; Ram Pickup Is Similar) Courtesy of CHRYSLER CORP. Ram Van/Wagon 1. Disconnect negative battery cable. Remove heater control panel. See HEATER CONTROL PANEL under REMOVAL & INSTALLATION. Disconnect heater control panel harness connectors. Using DVOM, check for continuity between heater control panel C3 harness connector terminal “C” (Black wire) and ground. See Fig. 6 . If continuity exists, go to next step. If continuity does not exist, repair open in Black wire between heater control panel and ground connector located at lower right of steering column. 2. Place heater mode control selector to any position, except OFF. Using DVOM, check for continuity between appropriate terminals of heater control panel, for C3 connector terminals “B” (Violet wire) and “C” (Black wire). If continuity exists through heater control panel, go to next step. If continuity does not exist, replace faulty heater control panel assembly. 3. Using DVOM, check for continuity between heater control panel C3 connector terminal “B” (Violet wire) and C1 connector terminal “E” (Violet wire). See Fig. 6 . If continuity exists, go to next step. If continuity does not exist, repair open in Violet wire between heater control panel C3 and C1 connectors.

1993 BMW 325i (E36) Removing and Installing/ Replacing Heater and Air Conditioning Fan (M50, S50, M52)

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With Air Conditioning Notes Removing and Installing/Replacing Heater and Air Conditioning Fan (M50, S50, M52) * Additional work on 2-door model: Remove console for the windshield wiper system. * Position windscreen wiper, left, vertically. * Pull off rubber part and pry out grill. Zoom Sized for Print Zoom Sized for Print * Remove screws from cable channel. * Remove screws on right-hand side and take off holder. * Unscrew left-hand screw. * Pull out air collector in upwards direction. Note: Air collector will be difficult to pull out. M50, M52 Unclip covers. Unscrew bolts. Remove cover of injection-valve plate. * Unclip covers and remove screws. * Remove cover * Unfasten clips and remove blower cover. * Disconnect connector. * Unfasten clips and lift out left upper section of blower. Note: The air conditioning system remains installed. Illustration shows air conditioning unit removed.

2000 Dodge Dakota & Durango Power Windows ADJUSTMENTS

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ADJUSTMENTS WINDOWS Remove door trim panel. See DOOR TRIM PANEL under REMOVAL & INSTALLATION. Loosen bolts holding window to regulator. Raise window fully, seating window in frame. Tighten bolts. Install door trim panel. TROUBLE SHOOTING POWER WINDOWS On Dakota, inspect circuit breaker No. 20 (20-amp) in junction block. On Durango inspect circuit breaker No. 21 (25-amp) in junction block. On all models, junction block is located on left end of instrument panel. Inspect fuse No. 9 (40-amp on Dakota, 50-amp on Durango) in Power Distribution Center (PDC). PDC is located in left front corner of engine compartment. Inspect power window system ground circuit. See WIRING DIAGRAMS . SYSTEM TESTS ALL WINDOWS INOPERATIVE Dakota 1. Check circuit breaker for power window system. See TROUBLE SHOOTING . Replace circuit breaker as necessary. If circuit breaker is okay, go to next step. 2. Disconnect negative battery cable. Remove driver’s front power window switch. See POWER WINDOW SWITCH under REMOVAL & INSTALLATION. Check for continuity between ground and terminal No. 3 (Black wire) at driver power window switch wiring harness connector. If continuity exists, go to next step. If continuity does not exist, repair open in Black wire between driver power window 2000 Dodge Durango 2000 ACCESSORIES & EQUIPMENT’ ‘Power Windows – Dakota & Durango 2000 Dodge Durango 2000 ACCESSORIES & EQUIPMENT’ ‘Power Windows – Dakota & Durango switch connector and ground. See WIRING DIAGRAMS . 3. Connect negative battery cable. Turn ignition on. Measure voltage between ground and terminal No. 5 (Tan wire) at driver’s power window switch wiring harness connector. If battery voltage is present, check driver power window switch. See POWER WINDOW SWITCH under COMPONENT TESTS. If battery voltage is not present, repair open Tan wire between driver power window switch connector and ignition switch. See WIRING DIAGRAMS . See POWER DISTRIBUTION article in WIRING DIAGRAMS. Durango 1. Check circuit breaker for power window system. See TROUBLE SHOOTING . Replace circuit breaker as necessary. If circuit breaker is okay, go to next step. 2. Disconnect negative battery cable. Remove driver’s front power window switch. See POWER WINDOW SWITCH under REMOVAL & INSTALLATION. 3. Check for continuity between ground and terminal No. 5 (Black wire) at driver’s power window switch wiring harness connector. If continuity exists, go to next step. If continuity does not exist, repair open in Black wire between driver’s power window switch connector and ground. See WIRING DIAGRAMS . 4. Reconnect negative battery cable. Turn ignition on. Measure voltage between ground and terminal No. 4 (Tan wire) at driver’s power window switch wiring harness connector. If battery voltage is present, check driver’s power window switch. See POWER WINDOW SWITCH under COMPONENT TESTS. If battery voltage is not present, repair open Tan wire between driver power window switch connector and ignition switch. See WIRING DIAGRAMS . See POWER DISTRIBUTION article in WIRING DIAGRAMS. ONE WINDOW INOPERATIVE

2000 Chevrolet Blazer HEATER CORE Removal And Installation Procedure

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HEATER CORE Removal Procedure 1. Remove the heater/vent module. Refer to HEATER/VENT MODULE . 2. Remove the heater core access cover screws. Fig. 14: Identifying Heater Core Access Cover & Screws Courtesy of GENERAL MOTORS CORP. 3. Remove the heater core access cover. 4. Remove the heater core from the heater/vent module. Fig. 15: Identifying Heater Core Courtesy of GENERAL MOTORS CORP. Installation Procedure 1. Install the heater core to the heater/vent module Fig. 16: Identifying Heater Core Courtesy of GENERAL MOTORS CORP. 2. Install the heater core access cover. Tighten Tighten the heater core access cover screws to 1.9 N.m (17 lb in). NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.