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Iam not getting heat inside the blower blows good i put a new thermosstat in also heater valve is opening

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Toget proper heat, keep your temp setting at 30+ degree and also mode in "heat"position. If still no heat, check your heating sensor for closed circuit by anOHMs metre.It it's with RV, check power to RV.If it's with heatingelement check power to element. If power is there but still no heat meanselement defective. Replace new heating element. Thanks.

Posted on Jan 03, 2011


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Why is there no power to A/C control panel?

no less than 6 related posts.

2.5L or 4.0L engine?>

why not post the full symptoms. and year of car.

if i read all 28 days of posts, i see its a 1988 !

and books on that old dog are hard to find (sold mine)

had 2 , 1988s, matching pair, xj and Comanche.

drove them to death. 500k total, miles.

I know 88s very well, too.

the problem is finding facts on this relic, french ECU car.

but it's online, at mitchells and alldata. and others

to work on this old car, why not get a $15 subscription to mitchells, DIY.

and not work blind and in the dark.

so ill help you.

A/c Dead or more clearly the panel is dead.

doe that mean just a lamp dead, but a/c works or not

why not post all that works and does not.

does car drive ok day and night??????

anything else dead?

ok i see post 5 says everything else is fine

but then says, heat is dead.

but does the blower blow?

helping you with such sparse 1 liners. is near impossible

try this, put a full question in a text file with notepad.

then past it here.

like this.

Hello: my blower is dead, in dash why?

or blower good and heat dead, but engine is 180f , why.

or blower dead and heat dead parked, but work moving

that is in fresh air vent mode, i get heat and a/c

my A/c clutch on my compressor, is active or not.

works or not./??

ive lots of questions, here ill ask them

does the heater fan (blower) blow on HIGH/.??


no, blower fuse 25amps blown open

yes, but not low speed, then blower resistor block , burned out.

does the heater water valve open and close proper

with dash temperature lever action ( takes a hand vacuum tool to test this......!!!)

lets work heat. since that is 10x more easy than A/C

1: engine hot, 180F +?

2: water valve opens, with lever? sends hot water to core in cab.

3: both core hose get real hot 180f hot? yes/no

4: does fan blow on high? yes/no

5: ever flush the core out. so it clean inside,

do so at ends of hoses, not at core. or damage is easy to happen there. (ask why and how)

ends means engine side.

6: do the dampers move correctly via cables and vacuum.

you said no power to panel, please say what that means.

blower dead or what?>


this is the vacuum operated hot water valve.

easy to test, heat off , it goes closed, heat max

it opens max. can be seen to work, see lever below?


this vacuum slave actuator (called motor , by motor heads)

must move when you slect modes, if not say so. ask for tests.


and last the HVAC drawing. to arrow is fuse. blow.

bottom arrow is P , for clutch.


tell more get more

1 lines symptoms are no good.

tell the full story. and WIN!

Mar 03, 2016 | Jeep Grand Cherokee Cars & Trucks

1 Answer


When you turn the heat on,is the blower putting out good wind speed.Do all the vents and defroster have good air flow.Does the A.C. blow with good air speed.

Jan 19, 2014 | Ford Cars & Trucks

1 Answer


The complete removal is shown in this youtube video.

So you're getting heat but no blower to circulate the heat, right? It's also possible the fuze is blown to the blower motor, the switch that adjusts the speed of the motor could be damaged, or its resistors that limit voltage, to control speed could be "open" (burned up). I would check many of those before replacing the fan..

The heat is controlled by a valve that allows water to circulate through the heater core. If the fan is blowing cold air, check the valve, or blow water back and forth through the heater core to clean it out.

Jan 05, 2014 | 2000 Chevrolet Malibu

1 Answer

Heater not blowing hot air

IT could be one of several things: possible the blower fan motor is bad; or the valve that lets the hot water in from the engine to the heater core is not opening; or the door that lets the air flow past the heater core and onward to your vents is not opening. All these are controlled by your heater switch, via relays and vacuum lines. If the blower motor works well when you put power to it directly, but not when it is hooked to the car, a connection in the switch or a relay may be bad. if you get little or no effort from the blower motor when you hook it directly to a good battery, it's the blower motor itself gone bad. If you get airflow but not heat, it's the device which diverts the hot water into the heater core. and if its the door to let air flow over the heater core, it could be a relay, a vacuum hose or the switch.

Dec 09, 2013 | BMW 325 Cars & Trucks

1 Answer

I have changed the thermostat on my 1996 Olds 88 and have checked the level of the coolant and everything there is in proper order. The blower works in both AC mode and heat mode, when I select cool the...

check the heater inside under the dash and make sure the actuator motor is opening and closing the doors fully on the heater to direct the heat and ac.

Apr 22, 2017 | 1996 Oldsmobile 88

1 Answer

95 caprice heater not blowing hot air, hissing when off. blower is working at all levels. not a sign of the resistor going out. just isnt blowing any heat. not losing any coolant.

The thermostat could be stuck open or the heater core or radiator could be clogged or it could be a faulty heater control valve.I would flush the coolant sytem out with prestone super flush and put a new thermostat in it first.

Jan 24, 2012 | Cars & Trucks

1 Answer

Heater blows cool air instead of warm air

check your coolant level if it is low top it off. if it is full you may need to change your thermostat to get the temp back to normal. for the heat check the heater control valve to make sure it isn't stuck (heater control valve should be located against fire wall connected to heater hose.

Dec 07, 2009 | Dodge Grand Caravan Cars & Trucks

1 Answer

No heat, heater core is good,blower moter works

Check the operation of the heater control valve. If it doesn't open up no heat. If the cable moves the control on the valve take the valve off and check it manually. The lever may work but the valve still doesn't open.

Sep 30, 2009 | 2002 Mitsubishi Galant

2 Answers

Replaced the heater core. now i cant get good heat

the heater control valve is likely crusted shut ...replace that and any hoses that where crimped for a long time to heater core and backflush system with heater open full...also be sure head units cables vacuum lines and electrical were not disturbed when you tore out heater core

Jan 13, 2009 | 1997 Pontiac Grand Am

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