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How to check for leak in air conditioning system

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If it is low then you can usually put dye in the system to find a leak. go to local parts store, ask for a/c leak detector dye, read instructions on bottle. after you run it for a few days then check it under a black light. usually a hose.

Posted on Apr 30, 2010

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Posted on Jan 02, 2017

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SOURCE: 1998 AIR CONDITIONING SYSTEM NOT COOLING

when u say u checked for leaks did u use a uv light and the yllow glasses cause thats the only way to see leaks i would check all connections including service ports under the red n blue caps (high n lowside ) also if ur system went to low u might have to evactuated first for it to work also when u take it in to evactuate the system they should tell u if its holding pressure

Posted on Jun 13, 2008

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SOURCE: code check=number 5 misfire

From what I have read up, faulty ignition coils are a regular issue with 2002 model onwards. Also a broken PCV hose. Please check that

Posted on Jul 09, 2009

germcelchar
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SOURCE: air conditioning leak

You need to start now as it will only get worse

Posted on Aug 06, 2009

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97 Grand am v6 up & down idle. Driving =steady acceleration. I've changed, O2 sensor, throttle positioning sensor. Scan is still saying Random misfires? Get warm won't start.


P0300 Random misfire - lean condition , vacuum leak , low fuel pressure , fuel filter plugged partially , mass air flow sensor .
If the misfire is random, check for the following conditions:
?€¢
System Grounds: Ensure all connections are clean and properly tightened.


?€¢
MAF: A Mass Air Flow (MAF) sensor output that causes the PCM to sense a lower than normal air flow will cause a lean condition.


?€¢
Air Induction System: Air leaks into the induction system which bypass the MAF sensor will cause a lean condition. Check for disconnected or damaged vacuum hoses, incorrectly installed or faulty crankcase ventilation valve, or for vacuum leaks at the throttle body, EGR valve, and intake manifold mounting surfaces.


?€¢
Fuel Pressure: Perform a fuel system pressure test. A faulty fuel pump, plugged filter, or faulty fuel system pressure regulator will contribute to a lean condition.


?€¢
Injector(s): Perform injector coil/balance test to locate faulty injector(s) contributing to a lean or flooding condition. In addition to the above test, check the condition of the injector O rings.


?€¢
EGR: Check for leaking valve, adapter, or feed pipes which will contribute to a lean condition or excessive EGR flow.

Reviewing the Fail Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to be set occurs. This may assist in diagnosing the condition.

Oct 21, 2015 | Cars & Trucks

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Air condition


If you've never worked on an air conditioning system before, I would recommend you take it to a shop and get it checked out.
If the system is low on freon, you have a leak that would need to be fixed to keep any freon you add from leaking back out. And it could have an electrical problem instead of being low on freon.
Freon gas is minus 35 degrees when it comes out of the can.

Jun 07, 2013 | 1996 Jeep Grand Cherokee

1 Answer

2005 chrysler van air condition leaking in floor


It is not the Air Conditioning leaking... It is your Heater Core that is a hole, check your Coolant System to see if it is low and then you have your answer.

Apr 14, 2013 | 2005 Chrysler Pacifica

1 Answer

Code 1150 on a 1997 ford f 150 with a 4.2 motor


I will try to paste an article for you. Several sources indicate this is a Bank 2 O2 sensor problem and that it is failing to switch and adjust for the fuel mix. But as you can see, many defects can lead up to this O2 sensor Code 1150.

I would try to use a spray bottle of water and go around the Intake manifold and spray the water while the engine is running. An intake leak will draw water into the engine and change RPM.

If no success then try changing the O2 bank 2 sensor. You may need to wipe the computer and clear the Code. H40 DTCs P1131, P1132, P1151 AND P1152: UPSTREAM HO2S NOT SWITCHING. DTC P1130: FUEL SYSTEMicon1.png NOT SWITCHING AT FUELicon1.png TRIM (RICH OR LEAN)
Diagnostic Trouble Codes (DTCs) P1131 bank 1 (Cylinder 1) and P1151 bank 2 indicate the fuel/air ratio is correcting rich for an overly lean condition. The HO2S voltage is less than 0.45 volt. DTCs P1132 bank 1 (Cylinder 1) and P1152 bank 2 indicate the fuel/air ratio is correcting lean for an overly rich condition. The HO2S voltage is greater than 0.45 volt.
DTC P1130 and P1150 indicate the fuel control system has reached maximum compensation for a lean or rich condition and the HO2S is not switching.
DTC/HO2S Reference List
•HO2S-11 = DTCs P1131, P1132 and P1130
•HO2S-21 = DTCs P1151, P1152 and P1150
Possible causes:
Fuel system
•Excessive fuel pressure.
•Leaking fuel injector(s).
•Leaking fuel pressure regulator.
•Low fuel pressure or running out of fuel.
•Contaminated fuel injector(s)
•Vapor recovery system
Induction system
•Air leaks after the MAF.
•Vacuum leaks (vacuum lines and gaskets).
•Restricted air inlet.
•PCV system.
•Improperly seated engineicon1.png oil dipstick.
EGR System
•Leaking gasket.
•Stuck open EGR valve.
•Leaking diaphragm.
Base engine
•Oil overfill.
•Cam timing.
•Cylinder compression.
•Exhaust leaks before or near the HO2Ss.
•Check intake air system for leaks, obstructions and damage.
•Check air cleaner element, air cleaner housing for blockage.
•Verify integrity of the PCV system.
•Check for vacuum leaks. user_online.gif quote.gif post_old.gif )

Mar 28, 2013 | 2003 Ford Ranger Regular Cab

1 Answer

Air-conditioning leaks


Many car accessory shops and suppliers will sell you a leak-tester in an aerosol type can which you use to inject the contents into the a/c system. Then once it's in, you run the car and check for leaks (which are then obvious - refer to the instructions on the can) and then it should be obvious how to cure them. OK?

Jun 09, 2012 | 1995 Oldsmobile Cutlass Supreme

1 Answer

P1131


Fuel/air ratio is correcting rich for an overly lean condition.
Possible Causes:
Fuel System---Exessive fuel presser, Leaking fuel injector(s), Leaking pressure regulator, Low fuel pressure or Contaminated injector(s).
Induction System--Air leaks after the MAF, Vacuum leaks, Restricted air inlet, PVC system, Fuel purge system or Improperly seated dip stick.
EGR--Leaking gasket, Stuck open EGR valve or Leaking diaphragm.
Base Engine--Oil overfill, Cam timing, Cylinder compression, Exhaust leaksbefore or near the HO2Ss.
CHECK AIR FILTER, AIR FILTER HOUSING FOR BLOCKAGE.
VERIFY INTEGRITY OF THE PCV SYSTEM.
CHECK FOR VACUUM LEAKS.
HOPE THIS HELPS YOU ??

Jul 06, 2011 | 1996 Ford Escort 4 Door

1 Answer

Air conditioning in my 2002 dodge caravan not working properly. When I drive runs slow and when stopped the car stops the air conditioning too


have you had the system check for proper pressures and if it has air in the system or a leak causing low pressure in the system.this needs to be checked out by a shop that does a/c work.

Jun 08, 2011 | 1998 Dodge Grand Caravan

1 Answer

I have a 1998 ford contour that has codes p1130 and p1131 on it what could be the problem. the check engine light is on


H40 DTCs P1131, P1132, P1151 AND P1152: UPSTREAM HO2S NOT SWITCHING. DTC P1130: FUEL SYSTEM NOT SWITCHING AT FUEL TRIM (RICH OR LEAN)
    Diagnostic Trouble Codes (DTCs) P1131 bank 1 (Cylinder 1) and P1151 bank 2 indicate the fuel/air ratio is correcting rich for an overly lean condition. The HO2S voltage is less than 0.45 volt. DTCs P1132 bank 1 (Cylinder 1) and P1152 bank 2 indicate the fuel/air ratio is correcting lean for an overly rich condition. The HO2S voltage is greater than 0.45 volt.
    DTC P1130 and P1150 indicate the fuel control system has reached maximum compensation for a lean or rich condition and the HO2S is not switching.
    DTC/HO2S Reference List
    • HO2S-11 = DTCs P1131, P1132 and P1130
    • HO2S-21 = DTCs P1151, P1152 and P1150
    Possible causes:
    Fuel system
    • Excessive fuel pressure.
    • Leaking fuel injector(s).
    • Leaking fuel pressure regulator.
    • Low fuel pressure or running out of fuel.
    • Contaminated fuel injector(s)
    • Vapor recovery system
    Induction system
    • Air leaks after the MAF.
    • Vacuum leaks (vacuum lines and gaskets).
    • Restricted air inlet.
    • PCV system.
    • Improperly seated engine oil dipstick.
    EGR System
    • Leaking gasket.
    • Stuck open EGR valve.
    • Leaking diaphragm.
    Base engine
    • Oil overfill.
    • Cam timing.
    • Cylinder compression.
    • Exhaust leaks before or near the HO2Ss.
  • Check intake air system for leaks, obstructions and damage.
  • Check air cleaner element, air cleaner housing for blockage.
  • Verify integrity of the PCV system.
  • Check for vacuum leaks.

Feb 12, 2011 | Ford Contour Cars & Trucks

1 Answer

Air conditioning is bad


Early use of the new type freon - kills those old seals quickly.
You may have a cracked O ring seal in the high pressure side of your air conditioning system. Have it checked with a leak detector... that should tell which seal is leaking.

Oct 13, 2009 | 2002 Ford Taurus

1 Answer

Air condition not cooling. Indicator light flashes when air is on intermitantly.


Check the refrigerant charge of your system. If there's no pressure in the lines, the whole A/C system will shut-off. Check for leaks in the tubes, hoses, filter dryer, pressure switches, and compressor fittings. If the system has no charge and there's no visible leak from the items mentioned, the leak could be in the evaporator coil or condensing coil.

Jul 10, 2009 | 2004 Suzuki XL-7

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