Testing Digital Climate control/and Understanding the Codes
09-09-2009, 07:52 AM
#1
Banned
Thread Starter
iTrader: (12)
Join Date: Dec 2008
Location: BACK HOME FOR GOOD E.PROVIDENCE R.I.
Posts: 488
Testing Digital Climate control/and Understanding the Codes
Ok im trying to diagnos my a/c system issue, now I found a thread for the 5th gen explaing how to start the car and hit the off button on the a/c digital unit and then i get a solid 2 , then i wait a few senconds then a flashing 5 ... then i hit the up arrow for heat and get a 3 then i wait and i get a flashing 0 .... finally i get the number 41 45 46 etc and it blows the air out of different vents and it blows warm to hot .. im assuming it blows warm to hit cause my a/c isnt blowing cold..
when I bought the car the woman told me that her husband the "mechanic" let out all the r134 ... so it needs to be charged .. but what i also noticed is that the car had a major oil leak from the head which dried up on the altenatr which i just got changed and the harness cause of the crud build up "altenator had a recall " prior to the altenator being changed my lights would blink contiuosly . that problem has been resolve .. long story short im wondering if all that crud affected my compressor?
( head gasket has been changed)
when I bought the car the woman told me that her husband the "mechanic" let out all the r134 ... so it needs to be charged .. but what i also noticed is that the car had a major oil leak from the head which dried up on the altenatr which i just got changed and the harness cause of the crud build up "altenator had a recall " prior to the altenator being changed my lights would blink contiuosly . that problem has been resolve .. long story short im wondering if all that crud affected my compressor?
( head gasket has been changed)
09-09-2009, 08:05 AM
#2
This is all from the FSM.
The 2 is for the sensor check, 25 means that your sunload sensor is functioning, unless you did this test with no light around the car (like in a very dark shaded area).
30 means all of your vents are working
41, 42 SHOULD be cold air coming out of the vents, 43-46 should be hot air, again the FSM says that the engine should be running for all of these checks.
End of the FSM quoting.
Now since I don't have A/C either, I'm going through the same process.
If the mechanic intentionally let out all of the R-134 in the system then he probably either spotted a leak, or saw that the compressor was bad (that's what mine did), go under your car and see it the compressor is hooked up to the belt (mine wasn't), and if it is, then I would run the engine to make sure it's spinning freely. If the compressor isn't hooked up (like mine was) check the disc, mine is seized to hell and covered in something really dark, smoke, oil, I dunno.
But still either way a trip to the shop is in order, R-134 aint stuff to play around with.
The 2 is for the sensor check, 25 means that your sunload sensor is functioning, unless you did this test with no light around the car (like in a very dark shaded area).
30 means all of your vents are working
41, 42 SHOULD be cold air coming out of the vents, 43-46 should be hot air, again the FSM says that the engine should be running for all of these checks.
End of the FSM quoting.
Now since I don't have A/C either, I'm going through the same process.
If the mechanic intentionally let out all of the R-134 in the system then he probably either spotted a leak, or saw that the compressor was bad (that's what mine did), go under your car and see it the compressor is hooked up to the belt (mine wasn't), and if it is, then I would run the engine to make sure it's spinning freely. If the compressor isn't hooked up (like mine was) check the disc, mine is seized to hell and covered in something really dark, smoke, oil, I dunno.
But still either way a trip to the shop is in order, R-134 aint stuff to play around with.
09-09-2009, 08:18 AM
#3
Banned
Thread Starter
iTrader: (12)
Join Date: Dec 2008
Location: BACK HOME FOR GOOD E.PROVIDENCE R.I.
Posts: 488
This is all from the FSM.
The 2 is for the sensor check, 25 means that your sunload sensor is functioning, unless you did this test with no light around the car (like in a very dark shaded area).
30 means all of your vents are working
41, 42 SHOULD be cold air coming out of the vents, 43-46 should be hot air, again the FSM says that the engine should be running for all of these checks.
End of the FSM quoting.
Now since I don't have A/C either, I'm going through the same process.
If the mechanic intentionally let out all of the R-134 in the system then he probably either spotted a leak, or saw that the compressor was bad (that's what mine did), go under your car and see it the compressor is hooked up to the belt (mine wasn't), and if it is, then I would run the engine to make sure it's spinning freely. If the compressor isn't hooked up (like mine was) check the disc, mine is seized to hell and covered in something really dark, smoke, oil, I dunno.
But still either way a trip to the shop is in order, R-134 aint stuff to play around with.
The 2 is for the sensor check, 25 means that your sunload sensor is functioning, unless you did this test with no light around the car (like in a very dark shaded area).
30 means all of your vents are working
41, 42 SHOULD be cold air coming out of the vents, 43-46 should be hot air, again the FSM says that the engine should be running for all of these checks.
End of the FSM quoting.
Now since I don't have A/C either, I'm going through the same process.
If the mechanic intentionally let out all of the R-134 in the system then he probably either spotted a leak, or saw that the compressor was bad (that's what mine did), go under your car and see it the compressor is hooked up to the belt (mine wasn't), and if it is, then I would run the engine to make sure it's spinning freely. If the compressor isn't hooked up (like mine was) check the disc, mine is seized to hell and covered in something really dark, smoke, oil, I dunno.
But still either way a trip to the shop is in order, R-134 aint stuff to play around with.
09-09-2009, 08:33 AM
#5
Thanks! It's the best $2600 I've spent, don't regret a single thing, even though it is a '99.
Well in my 99 FSM after you pres the ^ (Hot) button it should display 51 and then some final check throughs then that's the end of the self diagnosis.
Well in my 99 FSM after you pres the ^ (Hot) button it should display 51 and then some final check throughs then that's the end of the self diagnosis.
09-09-2009, 09:08 AM
#7
Oh yah i'm stoked to have 99.5... random misfire problems, I really can't find the source of it either... and my fave new problem, FINDING A COMPRESSOR, apparently the 99's are unique.... But on those days I just take a step back and enjoy the fact that it's Crimson Blaze, all of my problems seem to go away then.
Anywho...
Honestly you really don't need to do the 51 test, you said that you didn't feel any cold air come out when it did the 41 on the screen, when cold air should come out when it does 41 and 42.
You already have the R-134 out of your system so you're not going to have cold air anyways. Have a mech check it out for leaks, recharge it and if it works then it works!
Oh yah if it's your compressor... I got one for ya!
Anywho...
Honestly you really don't need to do the 51 test, you said that you didn't feel any cold air come out when it did the 41 on the screen, when cold air should come out when it does 41 and 42.
You already have the R-134 out of your system so you're not going to have cold air anyways. Have a mech check it out for leaks, recharge it and if it works then it works!
Oh yah if it's your compressor... I got one for ya!
Thread
Thread Starter
Forum
Replies
Last Post
hez8813
5th Generation Maxima (2000-2003)
11
03-12-2020 12:06 AM