DomsRanger87
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- Joined
- Dec 12, 2011
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- 13
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- Vehicle Year
- 1987
- Make / Model
- Ranger
- Transmission
- Manual
87' Ranger- v6 Temp goes up but I don't get any heat. Thermostat?
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Does an 87 have one of those heater control valves? I don't remember seeing on under the hood of my 87.If temp gauge in dash is showing normal temp range, but heater is blowing cold, or luke warm, then either the heater core is plugged up or the heat control valve on the heater hose in the engine compartment is not working.
If temp gauge in dash is showing below normal after warm up(10min.) then t-stat stuck open could be the issue.
Google: back flush heater core
This is easy to do and free, but you do need to know which heater hose is IN and which is OUT to have it be effective, the warmer hose is IN.
Back flushing the core can restore heat but it is a temporary measure, core tubes are restricted and will it need to be replaced.
Heat control valve can be operated by a cable or a vacuum line, Ford used both, easiest way to test these is to remove one hose and look at the valve flap while you manually operate the valve control.