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Dash gauges not working and vent controls - 1997 Dodge Caravan

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Why are all gauges on dash not working.only fuel guage


Usually when these Gauges go out it is because of a faulty BCM( Body Control Module) The BCM controls all dash instruments . If it is the BCM you will have to get a dealership to flash the new one. Before doing that though check all fuses under hood and inside. It should say gauges or BCM

Feb 18, 2015 | 2004 Chevrolet Avalanche

1 Answer

Ok 2005 chevy malibu. Fan hits on all speed rear defrost works. temp control does nothing no heat no ac. Blower blows from dash vents only no defrost no foot no blend on vents no nothing. Compressor does...


replace the switch its self.. you can search ebay motors under electrical and find one easily.. also they remove easily and just plug in the back..

Apr 05, 2014 | 2005 Chevrolet Malibu

1 Answer

Malibu heating and ac


does the car have automatic climate control?

Apr 05, 2014 | 2005 Chevrolet Malibu

1 Answer

Fuel gauge not working dodge intrepid 2002


A mechanic would check for voltage from the gauge at the sending unit connector at the tank. The sending unit grounds the gauge on the dash.
Not sure what the humming noise is, the computer controls the gas tank venting by a solenoid and the vapor canister.

Jul 19, 2012 | Dodge Cars & Trucks

1 Answer

2003 pontiac vibe- #10 fuse blows---check engine light on, runs rough.....windows, speed gauge, dash board lights, a/c control vent/blower and turn signals do not work code that comes up is speed sen


Well, if a mechanic on-site can't find the problem, you probably need a technician trained on Pontiac or GM systems.
Automotive systems today are so complicated and diverse, I couldn't even hazard a guess, and I've worked on cars and trucks for over 30 years. Us shadetree mechanics have just about seen our waterloo. Sorry, Denise.

Mar 22, 2012 | 2003 Pontiac Vibe

1 Answer

The car has developed a 'hissing' noise that occurs after ~5-10 minutes of driving; only hear down by the pedals and not very loud, and doesn't/hasn't seemed to affect driving or any of the gauges....


a lot of the air vents are controlled by vacumn, some auto stores sell cheap stethescopes to help isolate the leak, before you pull the whole dash apart. change the air vent settings , may help isolate it as well

Apr 22, 2010 | 2000 Chevrolet Corvette

1 Answer

Heater on 2000 jeep


most likely there is a door in the dash somewhere that controls the flow of the air. the actuator that controls the door for that side might be bad

Jan 14, 2010 | 2000 Jeep Grand Cherokee

1 Answer

How do your repair the heater in 1998 olds regency? The temperature readout flashes, the temperature gauge on the dash is not working, it blows hot out of one vent on bilevel setting.


Sounds like the heater control unit is going bad. I believe this unit has a digital/vacuum control unit which explains why you are only getting hot out of one vent. Try the salvage yard or ebay for a replacement unit. They are non-repairable...

Dec 02, 2009 | 1998 Oldsmobile Regency

1 Answer

Floor vents put out hot air when gauge is off


make sure blend door motor is working

Aug 25, 2009 | 2002 Chevrolet S-10

1 Answer

Check engine light and air conditioning


I Think I Can,
You Might Be Blending Hot Air With A/C Cold Air And Being 100Deg Outside, Your Getting
Really Warm/Hot Air Inside,
Your System Is Charged w/Freon, The A/C Compressor Is On/Engaged,
There Are 2-Aluminum Tubes Comming From The Compressor, [In & Out Pressure]
1 Tube Will Goto The Front Condensor, Infront Of The Raidator,
The OTHER Tube Comming Out Of The Condensor Will Goto A Dryer,
[Aluminum Looking Cylinder] Bigger Aluminum Tube[s]
The DRYER Will Then Feed Freon To Your Evap-Coil Inside Your Car [Cool-Air],

OK, The Dryer Tube's, 1 Of Them Should Be Cool/Cold, Locate That Tube, A Thermometer
wrapped w/Alum-Foil Around This Tube,
A/C ON, [A/C Compressor Engaged]
If You See The Temp Is Around 50-55 Degree's Or Lower, You Have Cold Air,
If Not, Above That, Low Freon, Or A restriction In The System. [Comes Later]
You Have Cold Air, You Have Warm/Hot Air Inside Car/Vents?
You Are Blending Hot Air w/Cold A/C Air, Problem Is With Heater-A/C Blend Box
Under Dash. There Are 2 Seperate Coils Under The Dash,
1 For Winter/Heat, Other [Evaporator Coil] For A/C, There Is a Diverter/Flapper door
That, For A/C, Closes Off The Heater Coil, Or It Should, To Prevent Engine Hot Water/Heat
From Blending w/ Cold A/C Air.
Most Are Controlled By A Diaphram, Vaccum Controlled From The Heater-A/C Controller
On The Dash.
If You Can Select From Defrost Vent To Dash and Floor Vents, Most Likely you Have
a Bad Diaphram That Controls The Heat-A/C Flapper Valve.
Most Time's You Can Open/Remove The Glove Box And See It,
A Temp Fix, For Cold Air, Would Be Remove The Vaccum Line From That Diaphram,
And Plug It, Pull The Metal Rod Back On The Diaphram with a Needle Nose Pliers,
If you Get Cold Air, Take a Ty-Wrap, Around The Shaft, Secure It, To Keep The
Vent In The Cold Air Position.
Then You Will Have To Get A New Diaphram Installed, Most Time's, Can Be Done
Through The Glove Box Opening.

Now About The Restriction In A System,
You Will Need A Set Of A/C Gauges, Car-Off, A/C Off, Connect Gauges.
IMPORTANT: The Gauges Before Connecting Should Show Pressure In Them [Freon]
Either The Gauges Have Freon In Them Or They Are In A Vaccum.
Otherwise They Have Air In Them, Air w/Freon=BAD Things.
OK, Gauges Show Pressure, Gauges Not Connected To Anything,
Open Up Both Knob's, Blue [Low-Side], Red [High-Side]
Gauges Needles will Move/Equal Out pressure,
BOTH Gauges Should Read Same Pressure, If Not, Quick Fix, Remove Gauge Glass
Covers, Need Little Screwdriver, If Gauges Off By ie: 4 psig,
Adjsut Low-Side [Blue] By 2psig and other, by 2psig, [Split The Difference]
So Now Both Gauges Read IDENTICAL Pressure.
Close Both Valves, Blue & Red
Connect Gauges To Car, Car=Off, A-C=Off
You Will See Pressure On Both Gauges,
Low Side Shuld Be Around 75-95psig, Depending on Outside Temp, If Around 60 or less
need freon.
OK, BOTH Gauges Should Show SAME Pressure reading,
If There Is MORE Than a 4psig Difference Between Them,
There Is A restriction In The System,
a Plugged "Orfice Tube" [Filter] Part Cost $3.00, Servicing The Filter, Alot More.
Restriction Causing Might Be , Moisture/Air in System [Improper Vaccum On System During Last Repairs], Compressor Breaking Down [Metal, Black Goo Bul-up]

Hope You Get Some Cold Air Soon.

Jun 25, 2009 | 1999 Mazda Millenia

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