1993 Jeep Wrangler no heat

1993 JEEP WRANGLER
112,000 MILES • 4 CYL • 4WD • MANUAL
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MARKFNORRIS
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after warm only heat we replaced the thermostat 195 degrees with a new one the same degrees...now it s cold all the time. the thermostat is installed right. the temp outside is 22 degrees..even after letting it sit it s only warm the gets cold as soon as the thermostate opens
Nov 21, 2008 at 3:54 PM
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AIRSOFTSOLDRECN9
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Check for a blocked heater core. The best way to do this is removal and visual inspection. You can also remove the heater core input and output lines and try flushing water from a garden hose. If sediment appears in the discharge side then it is best to have it professionally flushed or replaced. If you DIY then use vinegar or a similar solvent for dissolving minerals; submerge the heater core in the solution overnight.
Nov 27, 2008 at 12:18 AM