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  #1  
Old 06-24-2011, 11:37 AM
flyoil flyoil is offline
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Default a/c compressor signal wire

guys - on 2005 Ranger edge w/ 3.0 which one is signal wire, as you look at the plug on compressor, the top wire or bottom? also, how strong is the signal supposed to be? thx!
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Old 06-25-2011, 10:30 AM
FireRanger FireRanger is offline
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Default Re: a/c compressor signal wire

Huh? It's a 12 volt magnetic clutch solenoid. There is no signal or signal strength. it is either on or off.
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  #3  
Old 06-29-2011, 08:42 PM
spoons896 spoons896 is offline
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Default Re: a/c compressor signal wire

my guess he is have a problem with his A/C clutch staying engaged, i am having the same problem. every one i have talked to about it says it is a common problem in the rangers but no one know how to fix it. on mine i can run power to the compressor from the battery and it has no problem, but when i use the factory wiring it just engages and disengages, back and forth. If that is not what the OP is referring to Sorry if i am hijacking your thread. but let us know what you mean.
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Old 06-30-2011, 05:42 AM
FireRanger FireRanger is offline
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Default Re: a/c compressor signal wire

It certainly is not a common problem and what you're describing is perfectly normal. The clutch is not supposed to stay engaged. It engages and disengages as commanded by the computer which monitoring pressure. Cycling on and off and perfectly normal operation.

If it is not getting cold and cycling way too fast, then either you are low on freon or the pressure sensor is hosed.
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  #5  
Old 06-30-2011, 07:17 AM
spoons896 spoons896 is offline
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Default Re: a/c compressor signal wire

yea it only stay engaged like 2 seconds then disengages never getting cold and it would at idle bring the revs down enough to almost stall it. and it seems to be somewhat common because there are quite a few threads about it on here. and multiple mechanics around here have ran in to this problem. but what it was for me is the plug for the sensor on top of the dryer the clip was broke and wasn't staying connected good.
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Old 06-30-2011, 07:33 AM
FireRanger FireRanger is offline
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Default Re: a/c compressor signal wire

AC Clutch problems are not common. There is nothing wrong with the clutch, it is working perfectly fine. If you have a bad sensor, bad connection, or low freon, the clutch will cycle due to the computer's either real or perceived pressure problem. Did fixing that loose plug fix your problem?
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  #7  
Old 06-30-2011, 08:18 AM
spoons896 spoons896 is offline
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Default Re: a/c compressor signal wire

I am aware that it is not a clutch problem, i am not even hinting that it is a problem. i am perfectly aware it is a electrical problem. i have replace all the sensors fuses and the low and high pressure switch still does the same thing, until i pull plug for the low pressure switch and jump it and i know it is not a problem with the R134 level, i have checked them and took it to a A/c repair place and had them check it. but i had jumped the low pressure switch and thought it was a problem with that but replaced both the plug and the switch and no luck. and I guess i cant say for sure that it is a common problem with the Ranger but the avoidance is sure looking like it when i do a little research about it and there is a lot of people with the same problem and the repair shop around here run in to it on a regular bases. and if it is just the computer thinking it is a pressure problem, is there any fix because i really don't like Jerry rigging it to work, because if i cant find out how to fix it soon or i am just going to cut the low pressure wires and solder them together.
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I just maul them to death...Arrows are no fun
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  #8  
Old 06-30-2011, 08:40 AM
FireRanger FireRanger is offline
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Default Re: a/c compressor signal wire

Well you definitely can't leave the LP switch jumpered because your evaporator coil will ice over. So chances are the problem is on the low pressure business end of the AC system here. You've replaced the switch and the plug on the end of the wire so we know they are good. We know the wiring is good since it works when you jumper it. We know freon is full per the shop.

So chances are there really is a pressure problem on the low side. Why, I do not know. But something isn't right in there.
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  #9  
Old 06-30-2011, 11:16 AM
spoons896 spoons896 is offline
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Default Re: a/c compressor signal wire

Ok so i might just break down and take my truck in to have it looked at, which is sad because i have yet to have any work done at a shop on this truck. do you think clearing and refilling the system might help?
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Current Mods-30" Uniroyal Liberators A/T ,Eagle Series 117 15x10 Wheels. Thrush Turbo Muffler, Expo instrument Cluster, Hella 500 slims , Reese class III hitch.
Quote:
Originally Posted by Clinton View Post
I just maul them to death...Arrows are no fun
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  #10  
Old 06-30-2011, 12:49 PM
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Default

If it already full, then there could be something wrong with any of the components. I don't know.

[Posted with my Android mobile device using Tapatalk Pro]
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  #11  
Old 06-30-2011, 03:33 PM
spoons896 spoons896 is offline
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Default Re: a/c compressor signal wire

Yea, that's what i figure i am tired of replacing parts, so i am going to take it in and have it looked at and hope it is just a back switch or something.
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96 Ranger XLT 2WD 2.3L
Current Mods-30" Uniroyal Liberators A/T ,Eagle Series 117 15x10 Wheels. Thrush Turbo Muffler, Expo instrument Cluster, Hella 500 slims , Reese class III hitch.
Quote:
Originally Posted by Clinton View Post
I just maul them to death...Arrows are no fun
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  #12  
Old 06-30-2011, 07:07 PM
flyoil flyoil is offline
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Default Re: a/c compressor signal wire

Quote:
Originally Posted by spoons896 View Post
my guess he is have a problem with his A/C clutch staying engaged, i am having the same problem. every one i have talked to about it says it is a common problem in the rangers but no one know how to fix it. on mine i can run power to the compressor from the battery and it has no problem, but when i use the factory wiring it just engages and disengages, back and forth. If that is not what the OP is referring to Sorry if i am hijacking your thread. but let us know what you mean.
sorry, I've been away for a while. My problem is clutch tries to engage it sort shudders (like a tranny clutch does when pressure plate is weak) and it sort of stops, and then it engages the second or third time around. Once it engages, it won't disengage anymore. So I don't know why it is doing what its doing.
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  #13  
Old 07-01-2011, 07:12 AM
FireRanger FireRanger is offline
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Default Re: a/c compressor signal wire

Swap the relay in the underhood power distribution box with one of the other ones in there and see if the problem goes away. If not....

Disconnect the wire to clutch and use some wire to power it directly from the battery. See if it engages normally. If it still doesn't work right, the clutch is probably toast, which is strange but possible. If it does work properly, that's not good.
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How to: Aux light wiring, relays, & fuses
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  #14  
Old 07-01-2011, 01:00 PM
flyoil flyoil is offline
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Default Re: a/c compressor signal wire

Quote:
Originally Posted by FireRanger View Post
Swap the relay in the underhood power distribution box with one of the other ones in there and see if the problem goes away. If not....

Disconnect the wire to clutch and use some wire to power it directly from the battery. See if it engages normally. If it still doesn't work right, the clutch is probably toast, which is strange but possible. If it does work properly, that's not good.
question: could overfilling with refrigerant cause this? thanks.
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  #15  
Old 07-01-2011, 05:08 PM
FireRanger FireRanger is offline
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Default Re: a/c compressor signal wire

Well the high pressure switch would cut it off if it is too high.
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