Question about 1994 Pontiac Grand Am

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Where are the vacuum hoses that make the heater actuator work on 94 pontiac grand am SE

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  • 236 Answers

They are electric not vacuum and it has a thing called a door Actuator that opens and closes the doors.

Posted on Dec 10, 2016

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Posted on Jan 02, 2017

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SOURCE: vacuum hose leak? whistling sound on 2002 grand prix se

Take some WD40 and with engine running spray some around all vacume lines if a line is leaking the engine will rev up, than you will know where its at, just watch where you spray it, stay away from exhaust and electrical as much as possible, you don't need to spray a whole lot,A intake gasget might be leaking too try around there consentrating around #1 cyl., just be carefull don't need a fire.

Posted on Mar 03, 2009

hankfan18436
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SOURCE: 2003 Pontiac Grand Prix SE 6 Cyl - Cooling Fan Not Operating

the fan motor could just be bad, you can test this by removing the fan and connecting a wire to each terminal and to a battery. the wires hooked up one way will spin the fan and the other way will spin the fan backwards so you cant hook it up wrong. I hope that helps you out!

Posted on Jul 17, 2009

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SOURCE: heater core leak on a 1994 pontiac grand am se

first check to make sure that the hose,s back there didn't crack / of there fine then the heater core has blowen open and is know leaking / if you are in an aera that diesn't get real cold take the hoses off and route one to the other till you can get it fixed

Posted on Feb 25, 2010

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SOURCE: will the transmission out of a 94 pontiac grand

Yes, and you can have this information confirmed by any local salvage yard that can provide a cross reference of listings.

Posted on Apr 28, 2010

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SOURCE: somebody has completely removed All vacuum hoses on my girlfrnds 2002 pontiac grand am v-6 & I need to know where they all go???

There should be a basic diagram under the hood. Many shop manuals don't have much better. Your best bet might be to call around to junkyards, see if they have one, and go in the yard and look. They are pretty good about that if you just buy something like a cigarette lighter or something. Basically brakes get full vacuum, PCV valve is next, then the A/C ductwork is smaller and shares with the charcoal canister. There should be no leaks. Brakes and PCV are the important ones the rest plug the leaks and go from there.

Posted on Aug 30, 2012

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1 Answer

2006 Grand Prix Heater blows cold air only


The blend door is probably what is keeping the air from blowing across the heater core and picking up the heat. I hope your manual gives a description and procedure for it.

The blend door actuator and other heater case doors will be either vacuum operated with a few canister diaphragms situated around the heater case, or they may be operated with electric motors. If you pull off the lower sound insulator panels below the dash, you can see the bottom of the heater case, and then find the actuator for the blend door. If vacuum operated, check for vacuum. The vacuum for the heater/AC controls comes from a single line from the engine, through the firewall, and into the back of the control head or to a control module. Then, many vacuum lines branch out from this central point to the canisters- the heater/AC controls will direct vacuum to appropriate actuators, or servos.

Nov 12, 2013 | 2006 Pontiac Grand Prix

1 Answer

I need to replace the Heater Blend Door Actuator in my wife's 2004 Pontiac Grand Am SE. Were is it and how hard is it to replace.


its hard job if first time doing mechanic work.problem could be the temperature control switch also.to get to the air door actutor you have to remove instrument panel cluster and remove lower right sound insulator and lower left sound insulator panel and knee bolster from below the steering column.first you need to disable airbag in the steering wheel and passenger side dash before working around the dash area.to disable airbags turn off radio disconnect negative battery cable wait 20 minutes let airbag discharge first before attempting to work around the dash or instrument cluster. like i said hard job if first time you have remove a lot of things to get to the heater core housing where air door actutor and defrost actutator locations.

Feb 02, 2013 | 2004 Pontiac Grand Am

1 Answer

2007 Pontiac Grand Prix heater problem


blend door actuator failing and sticking on cold setting

Nov 13, 2012 | 2007 Pontiac Grand Prix

1 Answer

2000 grand am se heater problem in the dash as described as being the actuator? motor comes up to temp,not overheating-blower motor works on all seting but as if temp switch on dash dont work. ---answers...


There are little doors under the dash that direct the air to either the vents (blows at your face), the defrost (blows at the windshield), or underneath (blow to your feet area) - these doors are controlled by what's called actuator/s and they are usually controlled by vacuum or cables - when the air won't change directions it can be either the vacuum switch, the vacuum line disconnected, cable disconnected or the actuator itself can be stuck or bad...

You also have a heater valve that allows the heated coolant to enter the passenger compartment into a heater core (small radiator to allow heat to transfer into the air when the blower blows air across the core) - this can also be vacuum controlled or cable controlled or electronically controlled - if it malfunctions then you may not get any heat into the passenger compartment - you will have to determine if the valve is not getting the signal to open or is bad and will not open - good luck :O)

Feb 17, 2011 | 2000 Pontiac Grand Am GT

1 Answer

Defrost does not blow up the windshield on a 95 grand am...but the heater works great...help


the mode switch may be the cause, it work on engine vacuum.
check all the vacuum lines connect to it.
if the vacuum line connects to the defrost actuator came off the you won't have any control

Mar 07, 2010 | 1995 Pontiac Grand Am

1 Answer

Heater core leak on a 1994 pontiac grand am se


first check to make sure that the hose,s back there didn't crack / of there fine then the heater core has blowen open and is know leaking / if you are in an aera that diesn't get real cold take the hoses off and route one to the other till you can get it fixed

Feb 25, 2010 | 1994 Pontiac Grand Am

2 Answers

Replace heater blower motor on a 1992 pontiac grand am


are u sure its the blower motor or heater control modular,,what is wrong with blower,,not working ?

Feb 08, 2010 | 2001 Pontiac Grand Am SE

2 Answers

Grand prix 3800 blowing only hot air please help


check the temp control switch in the dash

Jun 19, 2009 | 2002 Pontiac Grand Prix

2 Answers

Heater blowing hot air


If you have a new heater core inside, some of the probable causes of your lack of hot air include the two heater hoses, heater control cable, water pump, and damper/vacuum door. A handy diagnostic article that explains this will is the following:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Heating_System_Heater_Blowing_Little_No_Hot_Air.htm

Hope this helps!
Brad

May 27, 2009 | 1996 Pontiac Grand Am

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