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Front heater only blows cold,new rad fitted just before I bought motor,increase the rotating temperature knob and engine revs increase.

Where is heater matrix situated and how to get to it

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  •  Geoff Arno
    Geoff Arno Feb 09, 2012

    Sorry I didn't mention the make of vehicle, it is a 1997 Toyota Townace Noah, a Japanese import so it 's probably not UK spec.

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  • Cars & Trucks Master
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The heater matrix is behind the dash and requires it to be removed which is about 3/4 hours work ,now you havent stated the model or make of vehicle but reading this question 3 times now i suspect that the controls are connected correctly and the reason the engine is increasing in RPM is because it thinks the AC has been turned on so i would sugest you cut your losses and take it to a dealer as this sort of thing needs a dealer fitter who only works on one make of vehicle all day long and will do it with one hand tied behind their back whilst watching the secretary in the office all at the same time unlike your truely who works on anything and everything from a renault in the morning to somebodys motor bike in the afternnon and then the neighbours tractor so obviously it would take me ages to work out but a dealer fitter ?? minutes

Posted on Feb 09, 2012

  • Colin Stickland
    Colin Stickland Feb 09, 2012

    Sorry missed a bit it should read in-correctly ,in my haste i missed a bit out ,it comes with old timers sadly and iam ancient

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Where is the air and heat blend motor on a 2000 dodge dakota?


Hi Sharon, I'm glad to help. Your 2000 year doesn't have a motor for the temp door. It operated by a cable running from the control head to the temp door and you work it manually. If you can't control the temperature from hot to cold, sometimes the cable come off or breaks. Here how you can see the cable to see if its working. Remove the radio and right behind it you will see the cable attached to the door, while watching it move the temp lever from hot to cold and watch it. If it is moving then its most likely out of ajustment. If it is not moving, then you'll need a new cable. Just in case it is moving, I'm attaching the instruction on how to adjust it below. Hope this helps and have an awesome day Sharon!



TEMPERATURE CONTROL CABLE

Any time the heater-A/C control or the temperature control cable are removed and/or replaced, the following procedure must be performed.
  1. The temperature control cable housing and core must be installed at both the heater-A/C control and the heater-A/C housing ends, and the heater-A/C control must be installed in the instrument panel. See Heater-A/C Control and Temperature Control Cable in the Removal and Installation section of this group for the procedures.
  2. Rotate the temperature control knob on the heater-A/C control so that the knob pointer is in the 12 o'clock position.
  3. Pull the temperature control knob straight out from the heater-A/C control base until the perimeter of the knob (not the knob pointer) protrudes about 6 millimeters (0.25 inch) from the face of the control base.
  4. Rotate the temperature control knob to the 1 o'clock position. Push in on the knob slightly and continue rotating the knob to its full clockwise stop. The knob pointer should be aimed at a position about 8 millimeters (0.315 inch) beyond the end of the graduated red strobe temperature control graphic on the face of the heater-A/C control base. If the knob is not pointed to the correct position, go back to Step 2 and repeat the adjustment procedure.
  5. Rotate the temperature control knob counterclockwise until the knob pointer is in the 12 o'clock position again.
  6. Push the temperature control knob straight in towards the heater-A/C control base until the perimeter of the knob (not the knob pointer) is flush with the face of the heater-A/C control base.
  7. Rotate the knob to its full clockwise stop again. The knob pointer should be aimed at the end of the graduated red strobe temperature control graphic on the face of the heater-A/C control base. If OK, go to Step 8. If not OK, go back to Step 2.
  8. Rotate the knob to its full counterclockwise stop and release the knob. If the knob springs back from the counterclockwise stop, the self-adjuster clip that secures the temperature control cable to the blend-air door lever is improperly installed. See Temperature Control Cable in the Removal and Installation section of this group for the procedures. If the knob does not spring back, the temperature control cable adjustment is complete.

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