Heater
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tgreese
- Posts: 7195
- Joined: Fri Jun 08, 2012 6:31 am
- Location: Medford MA USA
Re: Heater
Year, model, equipment? These cars were produced for a few decades.
What does the TSM say? Presuming it's a '77, There is a chapter in the TSM on the heater/defroster with diagnostic flow charts. The wiring diagram transfer on the Tom COllins site is not great in the TSM copy, but the diagrams in the electrical section are quite good.
What does the TSM say? Presuming it's a '77, There is a chapter in the TSM on the heater/defroster with diagnostic flow charts. The wiring diagram transfer on the Tom COllins site is not great in the TSM copy, but the diagrams in the electrical section are quite good.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.
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tclancy77
Topic author - Posts: 7
- Joined: Fri Jul 26, 2019 2:34 am
Re: Heater
Nice ty. 1977 cherokee- mostly stock 360 with tbi. Dash all original. Time for some new gauges and wiring.
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candymancan
- Posts: 3684
- Joined: Tue Mar 22, 2016 11:32 pm
Re: Heater
Resisters would be on the firewall in the engine bay at least they were for my 90. Theyre a big plug with like 8 pins. Mine did the same thing as was unplugged
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1998 Jeep Grand Cherokee 5.9L Limited 219k
1998 Jeep Grand Cherokee 4.0 I6 laredo 430k
1990 Jeep Grand Wagoneer 155k
1976 Jeep J10.. 85k(repaired)
1998 Jeep Grand Cherokee 4.0 I6 laredo 430k
1990 Jeep Grand Wagoneer 155k
1976 Jeep J10.. 85k(repaired)
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tgreese
- Posts: 7195
- Joined: Fri Jun 08, 2012 6:31 am
- Location: Medford MA USA
Re: Heater
Typically the resistors are nichrome, like a toaster element. Typically they are placed in the heater housing, so their heat adds to the heated air going to the cabin. You can trace from the wiring diagram.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.
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Srdayflyer
- Posts: 423
- Joined: Mon Mar 18, 2019 2:08 pm
Re: Heater
i would start with the heater resistor on the engine bay side of the heater core plentum next to the blower motor thats where i would start, 2 screws to remove it you should see 3 resistor coils attached to the plug pins they look like coil springs you can check them with an ohm meter to check the resistance or basic continuity