Question about Dodge Cars & Trucks

1 Answer

Went to recharge my a/c on 2001 Dodge grand caravan with freon 134a,when I hooked up the the pressure gauge it registered 75 PSI on the low side so I did not add freon. what would cause the pressure to read in the warning area of the gauge? and how to fix it. The way I read the charts the pressure should be around 40 PSI.Also the Freon can was not attached to the filler hose equipped with gauge so it was not reading can pressure.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Dodge Master
  • 1,444 Answers

Ac compressor not turning on when supposed to

Posted on Jul 03, 2016

Testimonial: "Compressor runs fine clutch engages and disengages thru cycles"


1 Suggested Answer

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

What are the AC pressures supposed to be on a 2000 Monte Carlo?

On hot day @ 85=+ degrees it should be between 45 to 50 pounds on the low side pressure port

Jul 01, 2011 | 2000 Chevrolet Monte Carlo

2 Answers

AC blows warm. fan + compressor don't seem to engage.

The system could be low on refrigerant. The A/C pressure switch will not let the compressor run if the system pressure is below 28psi or above 455psi to protect the compressor from damage. At low pressures not enough oil (mixed in with the refrigerant) will circulate, and at high pressures, the compressor seals will likely blow. You can get a set of A/C manifold gauges for R-134a and check the system pressures yourself or get a shop to check it and possibly add some R-134a. If the system pressure checks good, then the A/C pressure switch, the compressor clutch, or some relays will need to be checked.

Feb 05, 2011 | 2003 Honda Odyssey

2 Answers

Air conditioner does not cool in 2000 Yukon.How do I check freon level and how to replace freon if need be

Get an r134a refrigerant add kit from Walmart or your local auto parts store.

You can even get a can of Arctic Freeze by Intermatics that has a hose and a gauge on it.

Connect the hose to the low side port. You can find this port on the 'thicker' piping that comes off of the compressor (versus the thinner piping that comes off the compressor which is the high pressure side).

Pressure should read 25 psi to 45 psi on the low pressure side when the compressor is running and the a/c is on.

Pressure should read 75 psi to 100 psi on a hot day when the car is off.

However, you'll want the a/c to be running when you add freon.

Press the button on the can to install more freon, if needed.

Aug 19, 2010 | 2000 GMC Yukon Denali

1 Answer

Can i recharge the air conditioning in my 2001 pontiac grand am se 2.4L myself

yes you can! get an r134a hose and 2 or 3 cans of r134a refrigerant. Find the low side port which has a black or blue cap on it (unless it got thrown away) and use the 'quick connector' while the can is screwed on to the other side of the hose.

You can get a recharge kit for maybe $35 at walmart, which has 1 can of freon which might be all you need to get the cold back into your a/c system.

Make sure that the compressor turns and spins with the belt, and also that the fan turns on at the radiator when you put the a/c on high fan and the coolest setting.

The pressure should range anywhere from 25 to 45 psi when you do this procedure, and if the compressor is not turning the pressure should be 75 to 100 psi on a hot day.

Hope this helps!

Jul 08, 2010 | 2001 Pontiac Grand Am SE

1 Answer

My husband is putting 134a in my air conditioning unit. can you give instructions

Recharge the system through the low side fitting, with the engine running you will need to have 25-30 psi on the low side gage, add freon a little at a time until this pressure is reached with the engine running and the compressor engaged.

May 29, 2010 | 2001 Ford Taurus

2 Answers

I need to bypass so i can recharge the system the freon is to low

try a jumper wire across pressure switch terminals.

Aug 15, 2009 | 2006 Dodge Caravan

2 Answers

2003 dodge grand caravan ac recharge

you should be adding the 134a to the system the low pressure switch is doing its job by not allowing the compressor to kick on, it wont kick on until there is enough 134a in the system to be above the preset pressure for the low pressure switch.

Jun 27, 2009 | 2003 Dodge Grand Caravan AWD

1 Answer

AC compressor:

It will normally come on by itself once you add the 134a if doesn't come on by itself I'm thinking you have a bad pressure swith in which is locacted in the A/C line in itself up on the passenger side by the firewall you can uplugged it there and jumper the 2 contacts together if the compressor kicks on it is either a bad pressure switch or there still isn't enough 134a in the system.

Sep 03, 2008 | 2001 Dodge Grand Caravan

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

118 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dodge Experts


Level 3 Expert

85178 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22484 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Are you a Dodge Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides