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T25 heater blower not working. Is there any quick fix?

1989 t25 heater blower not working. Is there any quick fix? or do I have to remove dash?

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Need to remove dash & replce heater core

Posted on Dec 18, 2008


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How do I remove heater blower motor?

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Sep 30, 2015 | 1998 Jeep Grand Cherokee

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1989 ford E350 , 460 . heater , blower not working

First I sugges to checl fuses and electricla connections; if they are ok, then test blower relay and blower motor (generally located under dash, passenger side).

Hope helps.

Nov 22, 2012 | Cars & Trucks

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How to change heater core

Check this procedure for models without A/C...

  1. Disconnect the negative battery cable, heater blower resistor wires and blower wires. Disconnect the heater core ground strap at the dash panel.
  2. Drain the cooling system and then disconnect both heater hoses at the heater.
  3. Remove the seven screws attaching the heater/blower case to the plenum and remove the heater/blower base.
  4. Remove the four screws from the heater core shroud, and then remove the shroud and core assembly.
  5. Separate the core from the shroud by removing the three screws and core mounting clamps and then separating the two.
To install:
  1. Using sealer as necessary to prevent leaks at all joints and flanges.
  2. Position the assembly onto the dash and tighten the retaining screws.
  3. Reconnect the heater hoses, electrical connectors and negative battery cable. Refill the engine with coolant, start the vehicle and check for coolant leaks.

And this procedure for all Buick models with A/C...

  1. Disconnect the negative battery cable and drain the cooling system.
  2. Disconnect the heater hoses.
  3. Remove the retaining bracket and the ground strap. Disconnect the module rubber seal and module screen.
  4. Remove the right windshield wiper arm.
  5. Remove the diaphragm connections, the hi/blower relay, the thermal switch mounting screws, and all the electrical connections from the module top.
  6. Remove the module top cover and remove the core.
To install:
  1. Apply a strip of caulk-type sealer when installing the module top.
  2. Install the core and module top cover.
  3. Install the diaphragm connections, the hi/blower relay, the thermal switch mounting screws, and all the electrical connections to the module top.
  4. Install the right windshield wiper arm.
  5. Install the retaining bracket and the ground strap. Connect the module rubber seal and module screen.
  6. Connect the heater hoses.
  7. Connect the negative battery cable and refill the cooling system.
  8. Start the engine and check for coolant and vacuum leaks.

Hope helps (remember rated this).

Jul 16, 2010 | 1989 Buick Park Avenue

2 Answers

Cant find heater core 1989 dodge caravan , need to see if it is not working. any advice?

Your heater core is in your dash, and yes, its a pain to get to. My dad and I did my grandma's in the same minivan, and we ended up taking out the front seat just to give us extra work room. Usually if your heater core is bad, you will have a big wetspot in the passenger side floor board. The only thing that really can go wrong with a heater core is it leaks, thus the wet spot.

Apr 24, 2010 | 1989 Dodge Caravan Cargo

1 Answer

No power on the wires to the front heater blower fan , i have replaced fuse's inside and outside, installed a new blower fan ,will work if i run a hot wire from fuse box to fan, Rear blower works fine.

ok the is a sensor that leads to the fan this should be the problem to your fan not working. lol i remember one guy used a light switch wired to the fan sticking out of his dash. the problem is an easy fix :)

Mar 24, 2010 | 1989 Chevrolet Suburban

1 Answer

Jeep cherokee Heater blower problem

Its not the switch or the controller in the instrument cluster. On my jeep there was a panel on the passenger side under the dash board. It helped me find it by turning on the heater and going toward the sound of the blower. On the backside of the panel was a series of little coils that control the different speeds. one of those coils had been broken.

Feb 20, 2010 | 1989 Jeep Cherokee

1 Answer

My '99 s-10 has a trace of oil on the driver side floor mat. the blower does not work . is this a heater core problem?

I have completely removed the dash out of a truck like yours, and most likely the trace of oil on the driver's mat is residual oil from perhaps the brake pedal or clutch pedal linkage (if it is a manual transmission). The blower assembly is mostly on the passenger side, and if the heater core failed ( the reason I removed my dash), then you should see coolant residue, not oil.
Your blower not working could be a bad blower motor, a fuse , the blower control switch, or the resistor assembly.
Hope you find your fix...

Jan 27, 2010 | 2001 Chevrolet S-10

2 Answers

The heater/ac blower has stopped completely after a period of time working intermitently. What could be the problem(s) and how do I remove/replace the blower switch on the dash. It only had three speeds...

There are two possible problems with it. The first is the switch, and the second is the heater motor itsself. Since the switch is easier and cheaper, I would start there. You'll have to pull off the trim ring on the dash...chevrolet likes to put a border like thing around the dash components that just snaps in in order to hide the gaps and screws. Once this is out, you will be able to access the screws for the panel that contains the switch. Then it'll be a matter of simply removing the switch, and replacing it. If that doesn't fix it, then you will have to replace the fan motor. It's possible that the brushes inside are worn out from use by now, due to age of the vehicle, causing intermittent operation. Good luck, and hope you get it fixed quickly.

Nov 19, 2009 | 2000 Chevrolet Monte Carlo

1 Answer

1989 Suburban A/C blower problem

check the switch to be sure there is power goin to it and out of it. there is a high speed fan relay that usually controls all speeds. it will be under dash on right side probably on ac/heater box when u find it inspect wiring and connector

Jul 22, 2009 | 1989 Chevrolet Suburban

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