Question about 2004 Pontiac Grand Am

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No freon left want to replace with red tek 12a need to know where the lowservice is located

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Find the A/C compressor. You will see a large line and a small line. Follow the larger line all the way back to the firewall. You will see what looks like a tire valve stem with a cap on it. That is you low side refrigerent service port.

Posted on Jul 19, 2009


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I do not have owners manual and would like to use Red Tek 12a to recharge the air conditioner but do not know which tap is the lower charge port. Where is this port located? Could you please send a diagram...

I use and I'd recommend you register for free at Once registered you'll have access to repair and shop manuals for virtually any car or truck. All the data, specs and diagrams you need now or may need in the future will be a couple of mouse clicks away.

Sep 12, 2011 | 1993 Dodge Intrepid

2 Answers

Ac compressor cuts on off just had a new one put ,on is it because its low on refridgerant

It could be low on freon or it could be a bad low pressure switch located at or by the accumulator or
ac dryer, if you have a ready made gauge, it will have a gauge,hose and can of freon, it can be closed,
the can can be empty, you just want to make sure there is freon pressure at the low pressure switch. once confirmed and you know there is normal freon pressure, proceed by setting your ac to high,pull off the low pressure switch molex and connect a jumper wire across it, if the ac clutch stays engaged and
the car starts to cool, just replace the low pressure switch, you do not have to pull the freon out to replace just make sure the seal is lubricated with the correct pag oil. if you just had the compressor, replaced you could also have a freon leak. good luck!

Aug 04, 2011 | 1999 Mercury Cougar

1 Answer

I need the stereo wire schematics for a 1995 ford aerostar xlt

1995 Ford Aerostar Car Radio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Green/Yellow
Car Radio Accessory Switched 12v+ Wire: Yellow/Black
Car Radio Ground Wire: Red or Black
Car Radio Illumination Wire: Blue/Red
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: Orange/Blue
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 5?
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Orange/Green
Left Front Speaker Negative Wire (-): Black/White
Right Front Speaker Positive Wire (+): White/Green
Right Front Speaker Negative Wire (-): Black/White
Car Audio Rear Speakers Size: 3 1/2?
Car Audio Rear Speakers Location: Tail Gate
Left Rear Speaker Positive Wire (+): Pink/Green
Left Rear Speaker Negative Wire (-): Pink/Blue
Right Rear Speaker Positive Wire (+): Pink/Blue
Right Rear Speaker Negative Wire (-): Green/Orange

if you need further assistance please let me know. If this helped solve your problem then please feel free to rate it accordingly. Thanks, Midwest-tek

Aug 31, 2010 | 1995 Ford Aerostar

1 Answer

Find timing marks for a 1997 mozda pick up 2.3

the timing marks are located next to the top left side of the crank pulley. If you need further assistance please feel free to let me know by following up with a comment. Thanks, Midwest-tek

Aug 31, 2010 | 1997 Mazda Pickup

1 Answer

After recharging with red tech 12a the compressor cuts in and out and the idle goes up and down. The gage on the low side at idle reads 55 and with the AC off goes up to 110.What did I do wrong?

You didn't state what year the car was. If it's in the 90's or 2000's, It takes the R134A freon, not the 12A, and it should have been charged on the low side, not the high side.

Jul 16, 2009 | 2000 Saturn L-Series

1 Answer

My ac blow out hot air and i want to put freon in my self and want to know how

Adding freon will not correct the problem. If you need to add freon, you have a leak, and you have moisture in the system, the leak should be located, mositure removed, then freon added. But to answer your question. Open the hood on, the left side you will see a round object called a dryer, you will see two pipes coming from it, one at the top and one at the bottom. The smaller is the high side, the larger is the low side. Obtain a can of freon either R-22 or 134a with an adapter for installing the freon. Turn the engine on, turn the AC to high. Add the freon to the ac using the low side.

Jun 30, 2009 | 1999 Saturn SL

1 Answer

A/C not cooling. Can't locate freon intake valve

its hidden for a good reason.. the pressue in that system is higher than most and normall only dealers should adjust it or specialist but if you have the tools and knowldege tp do then you need too look on left side under plastics its got a yellow or orange top i believe...BE CAREFULLL jags are designed for specifics....

May 18, 2009 | 2001 Jaguar S-Type

1 Answer

Air blowing warm in 2001 dodge dakota

get the a/c condensor recharged with a freon substitute, i use "red-tek 12a refrigerant", it is much safer than freon and is ozone friendly.

Apr 26, 2009 | 2001 Dodge Dakota

1 Answer

Refrigerant capacity ?

you need about 30-36 oz of r-12 or convert it to r134 the red tek product is terrible, one of my business friends here in colorado is actually the co owner of the company (and you guessed it .... his name is red :) )
i have never had the stuff work worth a dang but the retrofit kit (35-50 $) that you can buy at any walmart or auto part store always works awesome and comes with a guage to tell you when it is full :)

Jul 20, 2008 | 1995 Oldsmobile Cutlass Supreme

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