Question about 1987 Honda Prelude

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Charing AC need to know where & how to recharge with a home kit, where is the firewall & engine located I located the H I need the L for low....

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The firewall is the sheet of metal that separates you from the engine compartment on a typical engine in front design automobile. Often there are many items bolted to the firewall including A/C hoses.

You seriously need to know where the engine is on your lonesome or this is pointless.

The low pressure side of the A/C system will be the larger tubing size than the high pressure side. Start at the A/C compressor and work your way back to the firewall on the lower right side of the automobile where the lines likely go into the passenger compartment just at or around his/her knees.

Posted on Jun 28, 2009


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1 Answer

Where is the low side port for ac charge located on engine for 2001 mountaineer

4.0L , 5.0L : Back near the firewall (Evaporator) above the accumulator/drier. The line will be cold /low pressure port.
Near radiator (Condenser) is hot/high pressure port

Be careful, if unsure do not risk it. If the system is leaking this will be a very temporary fix and probably needs the service of an experienced auto AC person.

Mar 20, 2013 | 2001 Mercury Mountaineer

1 Answer

Air conditioner not working

If you are still getting air from the vents but it is not cold then you either have a bad compressor or just need to recharge it.

With the engine on in idle, turn on the AC and watch the RPMs. They should drop about 50-100 when you turn it on, also listen for the sound of the compressor kicking in. If you notice either of these things then the compressor is probably fine and the AC just needs to be recharged.

Head to your local auto parts store and pick up a recharge kit. The kit will have pretty good instructions on how to recharge it. If you are having difficulties following them just let me know.

Jun 10, 2011 | 2004 Audi A4

1 Answer

We have a 1997 pontiac grand am and the r134a kits we buy dont fit the high side fitting for the AC. I cant find anything but the Red capped one in front of the radiator. Is there another one and if so...

ok jeff yes there is a low side and it will be located by the ac resivoir up close to the firewall it will be a long cylinder with two hoses one of those hoses will have a fitting on it that will be the one a recharge cannister will fit on

May 11, 2011 | Pontiac Grand Am Cars & Trucks

1 Answer

D I Y a/c recharge Where are the a/c ports located

The low side port is located near the firewall at the back of the engine compartment near the right strut tower. It has a black plastic cover similar to a tire valve. Do not connect to the high pressure side which on my vehicle is located towards the front of the right side near the radiator. You will need R-134a and a connector kit. If you have leaks they should be corrected before recharging. Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Aug 27, 2010 | 2000 Ford Taurus

1 Answer

I got a ford f 150 king ranch and i am looking for the low ac sirvice port

Knowing the year of the truck would be helpful, but by now the system
should have been changed over from R12 to R134. The low side inlet
is located on the acumulator on the right side of the engine compartment at the firewall. If you're using an R134 recharge kit for a
booster shot thats fine, but if the system is empty it needs to be evacuated and charged with the proper equipment, to avoid future
problems. It can be the difference between semi cool and cold.
Hope this helps.

Jul 03, 2010 | Cars & Trucks

1 Answer

Ac not working

Get a garage to recharge the refigerant gas in your cooling system - you might have a leak also, they can pressure check it to find out.

The recharge can be done at home with a kit from any motor factor store but the pressure check is unreliable. You also need to know where the connections are.

Apr 30, 2010 | 2007 Dodge Ram Truck

2 Answers

AC booster recharge hook-up

You can only attach the the recharge hose from the kit to the low side ( A/C service port) and the cap should be blue with a leter L on it. Good luck and follow the instruction and don't over charge the system. With the AC on the coldest setting, use a thermometer in a middle vent. Normal vent temperature readings will vary depending on the (ambient) outside temp. The vent temperature should range from around 42-55 degrees in my experience. If normal gauge readings are obtained and the vent air is cold - STOP don’t overcharge the system. The only proper way to remove refrigerant is with a AC recovery machine so if this is being done at home I can’t emphasize enough not to over charge the system. And actually the best way to insure the proper charge is in a system, is to use an AC machine to recover the R134a and then evacuate and recharge the system with the correct amount. Most cars have the specified amount on a decal under the hood.  Good luck and hope this helps.

Jul 03, 2009 | 2000 Saturn SL

1 Answer

AC Recharge Location

connection should be on line coming out of firewall.righy side. fittings are different sio no chabce of wrong hook up.. the line you want shoul be the cool one with ac running. good luck

May 27, 2009 | 1999 Buick Century

1 Answer

Where do I hook up the R-134 AC repair / recharge kit?

look back near the firewall right beneath the bottom of the windshield. There is a small black cover that you unscrew, and hook the ac recharge kit onto. Then just follow the directions on the can.

Jul 16, 2008 | 2001 Ford Taurus

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