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heater control valve


  1. 2.5L ('98-'01) Heater control valve vacuum line

    So while trying to diagnose why i have no heat in my truck i found that the heater control valve was missing the vacuum line and i cant find any disconnected lines anywhere, i also cant find any mention of where the other end of the line is, i tried pressing the valve manually and when pressed...
  2. Heater Valve and Compressor Clicking Issue

    Hello All, Just looking for a little diagnostic help on my Ranger 2.3 1997. Here is the issue. I have replaced the Heater Control Valve two times. It is a Murray POS plastic made in China part. Leaks right out of the metal arm. I suppose there is something wrong with the o-ring there. Another...
  3. HVAC vacuum lines

    New member. I have searched for the answer and found some help but not enough to completely help me with my issue. Had to swap out the heater control valve on my 1995 3.0 Ranger XLT. Replacement was easy enough. My problem is that the vacuum line to the heater control was brittle and broke...
  4. heater control valve help!!!

    What's up guys? I have a 95 ford ranger 3.0 that keeps blowing out heater cores on me. It all started when I got the trans rebuilt, then flushed the coolant and changed the stat. First few months were fine, then it blew out again. Replaced it, then it blew out 3 weeks later. Now I'm on my third...
  5. Lack of heat

    I have a 97 Ranger with a 4.0 L engine and I am having a problem getting heat in the cab. Temp. gauge shows engine is heating up. I have replaced the thermostat, that's fine. Both fluid lines into the firewall/heater core heat up, although one does seem warmer than the other. The Heat Control...
  6. rfingon

    heater control valve leaking, P0171 code

    OK, strap in, because this may be a long one.... This 4.0L OHV (166K miles) will throw a P0171 code during a regular, in town drive, but will never throw this code during highway driving. Also worth mentioning, the MPG is steadily going down the crapper. She used to throw both a P0171 and P0174...


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