ac help
05-23-2013, 08:26 PM
#1
ac help
hi i been lookin thru the forums i havent found the answer to my question. ok so my ac dosent work. i checked to see if the clutch is turning and it isnt when its on. i tryed to see if its geting 12v to the compressor and its not getting any power. i jumped the dryer switch and still no power. what can it be? i pressed da scrader valves on the high and low side and they are holding pressure. please help what do i do next?? if any fuses which fuses would they be?
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aloha_hawaii (05-27-2013)
05-25-2013, 12:03 PM
#3
hi i been lookin thru the forums i havent found the answer to my question. ok so my ac dosent work. i checked to see if the clutch is turning and it isnt when its on. i tryed to see if its geting 12v to the compressor and its not getting any power. i jumped the dryer switch and still no power. what can it be? i pressed da scrader valves on the high and low side and they are holding pressure. please help what do i do next?? if any fuses which fuses would they be?
Has it been working & just stopped or what?
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aloha_hawaii (05-27-2013)
05-27-2013, 05:27 AM
#5
Depending on year & engine size, you either have a Relay or a half relay.
An easy way to test your Relay is locate your AC relay, (Owners manual that came with the truck will show which is which).
Replace it with another relay from the box, start engine, turn AC on & go look look to see if AC clutch engages, if so, great, it was just the Relay.
Also on the same line as the AC clutch is the Throttle Position Sensor, so if your TPS is bad, it will stop the circut & your AC clutch will no longer work.
As when your Auto does not start, you need to check for Fuel & Spark, it simplifies locating problems.
When your auto AC fails, first check to see if you have pressure in your AC system, (this is done using a guage, preferibly guages but even one on a empty can will work). If your clutch is not engaging, you will not get accurate readings, but it will show if you have a leak or it is an electrical problem.
I am a firm believe in never just replacing parts unless I know a part is indeed needed. Any auto part can be & should be tested prior to replacement.
An easy way to test your Relay is locate your AC relay, (Owners manual that came with the truck will show which is which).
Replace it with another relay from the box, start engine, turn AC on & go look look to see if AC clutch engages, if so, great, it was just the Relay.
Also on the same line as the AC clutch is the Throttle Position Sensor, so if your TPS is bad, it will stop the circut & your AC clutch will no longer work.
As when your Auto does not start, you need to check for Fuel & Spark, it simplifies locating problems.
When your auto AC fails, first check to see if you have pressure in your AC system, (this is done using a guage, preferibly guages but even one on a empty can will work). If your clutch is not engaging, you will not get accurate readings, but it will show if you have a leak or it is an electrical problem.
I am a firm believe in never just replacing parts unless I know a part is indeed needed. Any auto part can be & should be tested prior to replacement.
The following users liked this post:
aloha_hawaii (05-27-2013)
05-27-2013, 09:01 AM
#7
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05-27-2013, 09:03 AM
#8
Depending on year & engine size, you either have a Relay or a half relay.
An easy way to test your Relay is locate your AC relay, (Owners manual that came with the truck will show which is which).
Replace it with another relay from the box, start engine, turn AC on & go look look to see if AC clutch engages, if so, great, it was just the Relay.
Also on the same line as the AC clutch is the Throttle Position Sensor, so if your TPS is bad, it will stop the circut & your AC clutch will no longer work.
As when your Auto does not start, you need to check for Fuel & Spark, it simplifies locating problems.
When your auto AC fails, first check to see if you have pressure in your AC system, (this is done using a guage, preferibly guages but even one on a empty can will work). If your clutch is not engaging, you will not get accurate readings, but it will show if you have a leak or it is an electrical problem.
I am a firm believe in never just replacing parts unless I know a part is indeed needed. Any auto part can be & should be tested prior to replacement.
An easy way to test your Relay is locate your AC relay, (Owners manual that came with the truck will show which is which).
Replace it with another relay from the box, start engine, turn AC on & go look look to see if AC clutch engages, if so, great, it was just the Relay.
Also on the same line as the AC clutch is the Throttle Position Sensor, so if your TPS is bad, it will stop the circut & your AC clutch will no longer work.
As when your Auto does not start, you need to check for Fuel & Spark, it simplifies locating problems.
When your auto AC fails, first check to see if you have pressure in your AC system, (this is done using a guage, preferibly guages but even one on a empty can will work). If your clutch is not engaging, you will not get accurate readings, but it will show if you have a leak or it is an electrical problem.
I am a firm believe in never just replacing parts unless I know a part is indeed needed. Any auto part can be & should be tested prior to replacement.
05-27-2013, 09:04 AM
#9
05-27-2013, 09:12 AM
#10
http://www.motorcraftservice.com/pub.../97f12og1e.pdf
found dis u guys may want to book mark it. anyway pages 135-142 cover fuses and relays. only one fuse i seen controls the ac thats fuse 5 under the dash. no relays control ac. unless it just dosent say. anyone know if and where the relay for the ac is?
found dis u guys may want to book mark it. anyway pages 135-142 cover fuses and relays. only one fuse i seen controls the ac thats fuse 5 under the dash. no relays control ac. unless it just dosent say. anyone know if and where the relay for the ac is?