Question about 1997 Jeep Grand Cherokee

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My horn works when it wants my blower to my heater only works on defrost and the center of my information panel brinks steaty

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Try replacing horn,blower always reverts to defrost when there is no vaccum so check your vaccum lines,the hvac line is usually very small and goes through the firewall. sorry I don't understand the last part

Posted on Oct 02, 2009

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1 Answer

No blower on heater/cooler


If you know how to use a digital voltmeter than these instructions will be of help. If you don't know then take the vehicle to a repair shop.

Assuming that you know how to use a meter, Lets start with the horn. Check fuse, if a ok then remove horn from circuit and give it B+ and ground independently if it sounds Horn a ok, problem in clock spring ,or horn contacts are corroded. At this point if car has air bags bring it to a reputable shop. Cause if your not careful doing the electrical testing you can set off air bags and that will be a $1200 dollar mistake.
The rear heater is simple. Make sure the contacts are intact and clean on the glass. If they are then remove the switch bypass it and see if the rear screen heater turns on.(hook up meter to screen grid to check for B+) If it does the culprit was the switch.
Heater blower same principal. Circuit consist of blower, relay ,switch and resistor. First test blower remove contacts from blower and fabricate a B+ line and ground if the blower works then its a -ok.
If it doesn't replace blower. Again to test switch remove it and bypass it. Resistor Ohm out with a volt meter to see if resistance is higher than it should be. Remember at high speed you should have straight battery power going to that blower. If the fan doesn't go on high speed chances are its the switch cause RESISTOR is bypassed at this speed. YOU MAY NOT HAVE TO OHM OUT RESISTOR. GOOD LUCK FILL ME IN ON WHAT HAPPEN.

Dec 29, 2013 | Peugeot 308 Cars & Trucks

1 Answer

Heat defrost nothing is working and burnt smell 1990 chevy caprice


if you mean no air is blowing,i'd say your blower motors cooked or heater panel blower switch/or blower resistor may have melted

Nov 22, 2013 | 1990 Chevrolet Caprice

1 Answer

Where is the heater core located


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LEGEND
1 Clip
2 Dust and Pollen Filter
3 Air intake housing
4 Defroster air outlet
5 Side window air outlet
6 Heating and A/C controls
7 Air outlets
8 Instrument panel cross member
9 Defroster duct
10 Servo motor for fresh/recirculating air door -V154-
11 Ambient temperature switch -F38-
12 Gasket
13 Evaporator water drain guide
14 Heating and A/C unit
- Heater core
- Evaporator
15 Fresh air blower -V2-
16 Fresh air blower series resistance with fuse -N24-
17 Center air outlet
18 Control panel trim
19 Center trim
20 Heating and A/C cables
21 Heater core
22 Left rear duct
23 Lower duct
24 Upper duct
25 Footwell air outlet
26 Instrument panel cross member, left side member securing bolt
27 Relay
28 A/C cut-off control module -J314-
29 Instrument panel
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Jun 03, 2011 | 2000 Volkswagen Passat 4Motion

2 Answers

I have a 1996 Jeep Cherokee and the heater vents dont work.I have tried to find a picture of the fuse panel i can read but i cant..When you swith it to vents it only comes out of the defrost.Where can i...


Hope this helps:
Cavity/Fuse Diagram (1996 Grand Cherokee, passenger side kick plate to find, Owner's Manual pgs 205-206): 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

Row 1: 1-6 (left to right) Row 2: 7-12 Row 3: 13-18 Row 4: 19-22
1996 Jeep Grand Cherokee Fuse Panel (Passenger Side kick panel) Reply

CAVITY FUSE DESCRIPTION 1 -10 amp (RED) Radio 2 -15 amp (Lt Blue) Cigarette Lighter 3 -10 amp (RED) Rear Washer Switch, Body Controller 4 -10 amp (RED) Airbag 5 -10 amp (RED) Lamp Out Module, Overdrive Switch, OBD II 6 -15 amp (Lt Blue) Vehicle Information Center/Graphic Display Module Park & Side Lamps, Overhead Console Lighted Visor, Automatic Dimming Mirror 7 -20 amp (Yellow) Body Amp, Cluster, Body Controller 8 -20 amp (Yellow) Rear Wiper Motor, Flipper Glass Solenoid, Cargo Lamp, Trailer Tow 9 -15 amp (Lt Blue) Brake Switch 10- 10 amp (RED) Rear Window Defroster 11 -10 amp (RED) ABS Module 12 -10 amp (RED) Heater-Ventilation-A/C Control & Recirculation Motor 13 -15 amp (Lt Blue) Hazard Switch, Turn Signal Switch 14 -15 amp (Lt Blue) Spare 15 -15 amp (Lt Blue) Spare 16 -10 amp (RED) Right & Left Courtesy Lamp, Glove Box Lamp, Halo Lamp Cargo Lamp, Underhood Lamp, Dome/Read Lamp Right & Left Visor, Automatic Dimming Mirror 17 -15 amp (Lt Blue) Radio Illumination, Tail Lamp, Graphic Display Module, Park & Side Lamps, Headlamp Switch, Body Controller 18 -20 amp (Yellow) Spare 19 -15 amp (Lt Blue) Passing Light 20 -15 amp (Lt Blue) Radio, Heater-Ventilation-A/C, Vehicle Information Center 21 -15 amp (Lt Blue) Power Outlet 22 -10 amp (Blue) Airbag Module -------------------------------------------------------------------------------------
1996 Jeep Grand Cherokee Alarm, Remote Starter, Keyless Entry Wiring Information Constant 12V+ Pink/Black Ignition Switch Harness Starter Yellow Ignition Switch Harness Ignition Dark Blue/Gray Ignition Switch Harness Ignition 2 Red/Black Ignition Switch Harness (for AC) Accessory Black/Orange Ignition Switch Harness Tach Gray/White Coil Brake Switch White/Tan Brake Switch Trunk Pin n/a Works with Dome Light Parking Lights Blue/Red (+) Left of Steering Column or Light Switch Head Lamp Tan/Black Light Switch Factory Disarm Purple/Yellow (-) Driver's Kick Panel Black Connector at ECM Door Trigger Yellow (-) Driver's Kick Panel see notes Door Lock 5/Wire in Driver's Inside Driver's Door Orange/Purple Lock Pink/Black Unlock Door Unlock and Passenger's Doors Inside Passenger's Door Black/White L Pink/Black Unlock Horn Wire Gray/Orange (-) Steering Column Windows Up LF=Light Blue, RF=Brown/White, LR=Blue/White, RR=Gray/Black Doors Windows Down LF=White, RF=Purple/White, LR=Red/Black, RR=Green/White
• Cruise Control Information • Stereo Information • View all Jeep Vehiclesairconman.jpg

Dec 16, 2010 | 1996 Jeep Grand Cherokee

1 Answer

No heat, and I want to replace the heating core, need directions


Heater Core REMOVAL & INSTALLATION CAUTION
Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old. Front 1988-91 R/V SERIES WITHOUT AIR CONDITIONING
  1. Disconnect the negative battery cable.
  2. Disconnect the heater hoses at the core tubes and drain the engine coolant. Plug the core tubes to prevent spillage.
  3. Remove the nuts from the distributor air ducts in the engine compartment.
  4. Remove the glove compartment and door.
  5. Disconnect the air-defrost and temperature door cables.
  6. Remove the floor outlet and unfasten the defroster duct-to-heater distributor screw.
  7. Remove the heater distributor-to-instrument panel screws. Pull the assembly rearward to gain access to the wiring harness and disconnect the wires attached to the unit.
  8. Remove the heater distributor from the truck.
  9. Remove the heater core retaining straps and remove the core from the truck. To install:
  10. Install the heater core. Be sure that the case-to-core and case-to-dash panel sealer is intact.
  11. Position the heater distributor. Connect the wires attached to it and then install the heater distributor-to-instrument panel screws.
  12. Install the floor outlet and tighten the defroster duct-to-heater distributor screw.
  13. Connect the air-defrost and temperature door cables.
  14. Install the glove compartment and door.
  15. Install the nuts into the distributor air ducts (in the engine compartment).
  16. Connect the heater hoses at the core tubes.
  17. Connect the negative battery cable. Fill the cooling system and check for leaks.
1988-91 R/V SERIES WITH AIR CONDITIONING
  1. Disconnect the negative battery cable.
  2. Disconnect the heater hoses at the core tubes and drain the engine coolant. Plug the core tubes to prevent spillage.
  3. Remove the glove compartment and door.
  4. Disconnect the center duct from the defroster outlet duct.
  5. Disconnect the center, lower air distributor and the center air outlet ducts.
  6. Disconnect the temperature door cable.
  7. Remove the nuts from the 3 selector duct studs that project into the engine compartment.
  8. Remove the outlet duct-to-instrument panel screws. Pull the assembly rearward to gain access to the wiring harness and disconnect the wires and vacuum tubes attached to the unit.
  9. Remove the heater distributor from the truck.
  10. Remove the heater core retaining straps and remove the core from the case. To install:
  11. Install the heater core. Be sure that the core-to-core and case-to-dash panel sealer is intact.
  12. Position the heater distributor. Connect the wires attached to it and then install the heater distributor-to-instrument panel screws.
  13. Install the floor outlet and tighten the defroster duct-to-heater distributor screw.
  14. Connect the temperature door cable.
  15. Connect the center and lower air distributors and the center air outlet ducts.
  16. Connect the center duct to the defroster outlet duct.
  17. Install the glove compartment and door.
  18. Connect the heater hoses at the core tubes.
  19. Connect the negative battery cable. Fill the cooling system and check for leaks.
1988-90 C/K SERIES
  1. Disconnect the negative battery cable.
  2. Remove the coolant overflow bottle.
  3. Drain the cooling system.
  4. Disconnect the heater hoses at the core tubes.
  5. In the engine compartment, remove the heater case-to-firewall screws.
  6. Disconnect the antenna cable at the mast.
  7. Remove the glove box.
  8. Disconnect the wiring harness at the engine's Electronic Control Module (ECM).
  9. Remove the ECM and bracket.
  10. Remove the right side kick panel.
  11. Remove the right side lower dash panel bolt and nut.
  12. Remove the heater case mounting bolts.
  13. While lifting the instrument panel slightly, remove the case assembly.
  14. Lift the core from the case. To install:
  15. Lower the core into the case.
  16. Position the case assembly against the firewall.
  17. Install the heater case mounting bolts.
  18. Install the right side lower dash panel bolt and nut.
  19. Install the right side kick panel.
  20. Install the ECM and bracket.
  21. Connect the ECM wiring harness.
  22. Install the glove box.
  23. Connect the antenna cable at the mast.
  24. Install the heater case-to-firewall screws.
  25. Connect the heater hoses at the core tubes.
  26. Fill the cooling system.
  27. Install the coolant overflow bottle.
  28. Connect the battery cable.
1991-92 R/V AND 1991-98 C/K SERIES
  1. Disconnect the negative battery cable.
  2. Drain the cooling system.
  3. Remove the instrument panel glove compartment.
  4. Tag and unplug all electrical leads as necessary.
  5. Remove the center air distribution duct from the floor.
  6. If necessary, remove the ECM and mounting tray.
  7. Remove the hinge pillar trim panels.
  8. Remove the blower motor cover and then remove the motor.
  9. Remove the steering wheel and tilt back the instrument panel slightly.
  10. Remove the coolant overflow tank. Disengage the heater hoses at the core connections.
  11. Unfasten the attaching screws and nut and then remove the heater case.
  12. Remove the seven screws and lift off the heater case cover.
  13. Remove the fasteners and brackets that hold the heater core to the case and lift the core from the case. To install:
  14. Install the heater core in the case.
  15. Install the heater case bottom plate. Make sure there is a good seal.
  16. Install the heater case into the truck. Tighten the 4 lower screws to 17 inch lbs. (2 Nm); the upper screw to 97 inch lbs. (11 Nm); and the nuts to 25 inch lbs. (2.8 Nm).
  17. Connect the heater hoses at the core tubes.
  18. Install the coolant overflow tank.
  19. Install the instrument panel and the steering wheel.
  20. Install the blower motor and cover.
  21. Install the trim panels and if removed, the ECM. Install the air distribution duct and reconnect all electrical leads.
  22. Install the glove compartment. Fill the cooling system and connect the battery cable.
Rear 1988-91 MODELS
  1. Disconnect the negative battery cable.
  2. Drain the cooling system.
  3. Disconnect the heater hoses at the core tubes.
  4. Disconnect the blower motor wiring harness.
  5. Remove the blower motor clamp.
  6. Remove the motor attaching screws and lift out the motor.
  7. Unfasten the upper-to-lower case half screws and remove the upper case half.
  8. Remove the core seal.
  9. Lift out the core. To install:
  10. Install the heater core.
  11. Install the core seal.
  12. Install the upper case half and then tighten the upper-to-lower case half screws.
  13. Install the motor and then tighten the attaching screws.
  14. Install the blower motor clamp.
  15. Connect the blower motor wiring harness.
  16. Connect the heater hoses at the core tubes.
  17. Fill the cooling system.
  18. Connect the negative battery cable.
1992-98 MODELS
  1. Disconnect the negative battery cable and drain the engine coolant.
  2. Remove the right rear quarter panel trim and then remove the panel itself.
  3. Remove the right rear wheelhousing liner.
  4. Disconnect the heater hoses from the core.
  5. Unplug the electrical lead. Remove the drain valve.
  6. Remove the heater module.
  7. If necessary, remove the blower motor.
  8. Remove the heater case cover.
  9. Remove the heater case cover and then remove the heater core. To install:
  10. Install the heater core and then install the heater case cover.
  11. If removed, install the blower motor.
  12. Remove the heater module.
  13. Attach the electrical lead. Install the drain valve.
  14. Connect the heater hoses to the core.
  15. Install the right rear wheelhousing liner.
  16. Install the right rear quarter panel and then install the trim.
  17. Connect the negative battery cable and fill the engine with coolant.
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Dec 10, 2010 | 1995 Chevrolet Tahoe

2 Answers

The heater doesnt work toyota previa 92


check fuses do u know where fuse box is it is in center of dash above heater a lil button push up and it should pop off

Dec 06, 2010 | 1994 Toyota Previa

1 Answer

Where is the horn located on an '88 pontiac fiero gt? I just bought one and the relay system seems to be working but no sound comes out. I don't know if this is because the horn has been removed, I...


8754157.gif
Exploded view of the horn assembly location and components

There are two horn assemblies installed at the front compartment frame rails, one on the left and the other on the right frame rail. Remove the electrical connector and retaining bolt. Note that the right and left horns have different mountingbrackets. Install the horn and torque the bolt to 12 ft. lbs. (15 Nm).


Horn Relay The horn relay is located in the convenience center on the right side of the A/C and heater module under the instrument panel. To remove the relay, pull it straight out of the center

The convenience center is a stationary unit. It is located on the right side of the heater or A/C module in the vehicle, under the instrument panel. This location provides easy access to the audio alarm, 4-way flasher, the horn relay and the seat belt key and headlamp warning alarm. All units are serviced by plug-in replacements


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The convenience center is usually found on the right side of the heater or A/C module

Mar 07, 2010 | 1988 Pontiac Fiero

2 Answers

I have a mercury mountaineer 2003 V6. It has a problem of making sound repeated when I want to have heat turned on. No sound when the dashboard A.C/Heat stays at AC level, which is the zero? level. The...


When the engine is cold,check the coolant level.

Make sure it's on max.

===

A coolant system should be flush every two years.

===

If you did a coolant flush recently then air pocket can be the cause of the un-even heating problem.

The DIY method is to drive you car onto a ramp or a steep hill.

Iet the engine cool off and top off the coolant tank.

Set MAX heat + MAX fan

Let the engine ran for 20 minutes wih the cap off and the trap air will escape from the coolant reserve tank,

Check coolant level and top off coolant when the engine cools down.



A shop will charge $75+ for this but using an air operated excavate tool!

========

A car with over 90K miles may experience linkage problem to the heater control valve.

The heater control valve (near the firewall) may be stick over time.

Open the hood and move the heater to max and min. Back and forth.

Clean and lube the linkage with WD-40 to free the heater control valve.

If it's a vacuum type heater control valve then cash for leaky vac. hoses.


=======
Move the fan switch back and forth to re-new the electrical conductors.

Pass a vacuum over the control panel to prevent dust build up behind the console.

Sep 13, 2009 | 2003 Mercury Mountaineer

2 Answers

Heater/Defroster 2004 Dakota


replace the resistor that should fix it

Oct 27, 2008 | 2004 Dodge Dakota

1 Answer

1989 Mercury Tracer Sta. Wgn.


your owner manaul has it. your fuse cover should have chart too.

here is 96 tracer. You also have main fuses under hood.

INTERIOR FUSE JUNCTION PANEL REFERENCE CHART Fuse Fuse Rating Color Protected Components (REAR WIPER) 10A Red Rear wiper and washer motors, heater and A/C relays, daytime running lamps control (Canada), climate control assembly panel illumination HAZARD 15A Blue Front and rear turn signal lamps, turn signal indicator lamp, indicator flasher ROOM 10A (1.9L)
15A (1.8L) Red
Blue Dome and map lamps, safety belt warning chime, ignition key illumination, luggage compartment lamp, vanity mirror lamp, radio chassis (memory), power door lock relay, shift interlock system, powertrain control module (PCM), radio amplifier (memory) ENGINE 15A Blue Fan control (FC) relays, PCM relay RADIO 15A Blue Radio chassis, radio amplifier, remote control mirror, instrument panel illumination (DOOR LOCK) 30A Light Green Power door lock actuators BELT 30A Light Green Passive restraint control module, passive restraint motors (POWER WINDOW) 30A Light Green Window regulator electric drives METER 15A Blue Instrument cluster, backup lamps, rear lamps, speed control system, shift interlock system, safety belt warning chime, passive restraint control module, hazard flasher, PCM (1.8L Canada) WIPER 20A Yellow Windshield wiper motor and windshield washer pump STOP 20A Yellow Stoplamp, horn (1.9L only), rear hi-mount lamp TAIL 15A Blue Parking lamps, cornering lamps, rear lamps, license lamps, compartment lamp, instrument panel illumination (SUN ROOF) 15A Blue Sliding roof panel motor ABS 10A Red Anti-lock brake system (ABS) (1.8L only) (DEFOG) 20A Yellow Rear window defroster HEATER 30A
circuit breaker — A/C blower motor HO2S
(ON INTERIOR FUSE JUNCTION PANEL SIDE) 10A (1.9L)
20A (1.8L) Red
Yellow Heated oxygen sensor (HO2S) CIGAR
(ON INTERIOR FUSE JUNCTION PANEL SIDE) 20A Yellow Cigar lighter knob and element CIGAR 20A Yellow Cigar lighter OBD II 10A Red Data link connector #2 BLOWER 30A Light Green Blower motor relay HORN 20A Yellow Horn (1.8L only)

Aug 10, 2008 | 1989 Mercury Tracer

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