Question about 1998 Ford F150 Regular Cab

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I got problems with my heater on a 4.2 1998 f150 pick up truck

The blower is working but the air is allways cold

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  • jorge20034 Jan 13, 2009

    thanks everyone for your answers

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  1. Heater control Valve
  2. Low on coolant
  3. Thermostat sticking
  4. Air in Cooling system
  5. Control Module HVAC

Posted on Jan 13, 2009

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To troubleshoot this types of problem,click the link below :---
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This will help.Thanks.

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My 2003 f150 has heating problem the blower works and thermosat works but still blows cold air


Could be a couple of things. First does the temp of the vehicle get hot, if not, probably the thermostat is stuck open and you would need to replace it. There is a possibility that the coolant level is low and thus created an air pocket in the cooling system and no hot water is flowing through the heater core. If that is the case you would need to top off the coolant system and bleed the air out of it. Another possibility is a clogged heater core itself. Good luck.

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I have a 1994 chevy 1500 blower works full of antifreeze and hoses get tight when truck is warm but blows only cold air


if your truck is not overheating and shows no other signs of a cooling system problem, i would suspect a clogged heater core. you can try to flush it out by removing both heater hoses from the heater core, and with a garden hose, flush the core in both directions

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You might have a bad speed selector switch, or your blower motor resistor is faulty.

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your problem is caused by the air temperature control blend door actuator motor being defective, the little motor moves the door that gives either hot air or cold air or a blend of the 2.

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I have problems with my ac on a 4.2 1998 f150 pick up truck


jorge, I'm not sure I understand. I am wondering about the engine temperature when the truck is warmed up. The thermostat controls the engine temperature. Need to know what the dash gauge indicates (if equipped w/ one) for engine temp. If the thermostat was removed, or defective, the engine would run too cold all the time, resulting in a no heat, or very little heat problem. Let me know so we can figure this out. So, 1st thing to check is the antifreeze level in the radiator, and overflow bottle. If the level is too low, u won't get any heat, so make sure it's at the full mark. Next, answer above questions.

Jan 13, 2009 | 1998 Ford F150 Regular Cab

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