Help diagnose A/C problem
#22
New Member
iTrader: (3)
NM FOUND IT!
2005 350z
- High side (98 psi) (calls for w/ amb temp 152-194psi) idle
-low side (45psi) (calls for w/ amb temp 29-42psi) idle
-Pressures do not change with engine RPM
-BLOWS hot air
Compressor clutch works, in cabin blowing motor turns on, AC control switches work, all AC fuses and relays work.
-No leaks are found using UV light
-Compressor does not feel warm to the touch indicating mechanical binding of some sort.
-condenser is clean and free of debre
-System became hotter and hotter over the course of a week, till it finally blows only hot air.
Any ideas? I am literally about to change it all.
2005 350z
- High side (98 psi) (calls for w/ amb temp 152-194psi) idle
-low side (45psi) (calls for w/ amb temp 29-42psi) idle
-Pressures do not change with engine RPM
-BLOWS hot air
Compressor clutch works, in cabin blowing motor turns on, AC control switches work, all AC fuses and relays work.
-No leaks are found using UV light
-Compressor does not feel warm to the touch indicating mechanical binding of some sort.
-condenser is clean and free of debre
-System became hotter and hotter over the course of a week, till it finally blows only hot air.
Any ideas? I am literally about to change it all.
#23
350Z/370Z Tech Moderator
MY350Z.COM
MY350Z.COM
NM FOUND IT!
2005 350z
- High side (98 psi) (calls for w/ amb temp 152-194psi) idle
-low side (45psi) (calls for w/ amb temp 29-42psi) idle
-Pressures do not change with engine RPM
-BLOWS hot air
Compressor clutch works, in cabin blowing motor turns on, AC control switches work, all AC fuses and relays work.
-No leaks are found using UV light
-Compressor does not feel warm to the touch indicating mechanical binding of some sort.
-condenser is clean and free of debre
-System became hotter and hotter over the course of a week, till it finally blows only hot air.
Any ideas? I am literally about to change it all.
2005 350z
- High side (98 psi) (calls for w/ amb temp 152-194psi) idle
-low side (45psi) (calls for w/ amb temp 29-42psi) idle
-Pressures do not change with engine RPM
-BLOWS hot air
Compressor clutch works, in cabin blowing motor turns on, AC control switches work, all AC fuses and relays work.
-No leaks are found using UV light
-Compressor does not feel warm to the touch indicating mechanical binding of some sort.
-condenser is clean and free of debre
-System became hotter and hotter over the course of a week, till it finally blows only hot air.
Any ideas? I am literally about to change it all.
#24
New Member
Based on your description that it's stuck on blowing hot air only, it's either what Mic said or it's a stuck blend air door or bad blend air actuator. It could also be a faulty temperature dial (I believe you can test the resistance on the dial with an multimeter.) Hopefully, it's not a failed A/C amp.
Honestly, since the failure has been incremental, I'm placing my bets on the blend air door or actuator, because I've seen that happen a few times before.
Honestly, since the failure has been incremental, I'm placing my bets on the blend air door or actuator, because I've seen that happen a few times before.
#25
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Help
NM FOUND IT!
2005 350z
- High side (98 psi) (calls for w/ amb temp 152-194psi) idle
-low side (45psi) (calls for w/ amb temp 29-42psi) idle
-Pressures do not change with engine RPM
-BLOWS hot air
Compressor clutch works, in cabin blowing motor turns on, AC control switches work, all AC fuses and relays work.
-No leaks are found using UV light
-Compressor does not feel warm to the touch indicating mechanical binding of some sort.
-condenser is clean and free of debre
-System became hotter and hotter over the course of a week, till it finally blows only hot air.
Any ideas? I am literally about to change it all.
2005 350z
- High side (98 psi) (calls for w/ amb temp 152-194psi) idle
-low side (45psi) (calls for w/ amb temp 29-42psi) idle
-Pressures do not change with engine RPM
-BLOWS hot air
Compressor clutch works, in cabin blowing motor turns on, AC control switches work, all AC fuses and relays work.
-No leaks are found using UV light
-Compressor does not feel warm to the touch indicating mechanical binding of some sort.
-condenser is clean and free of debre
-System became hotter and hotter over the course of a week, till it finally blows only hot air.
Any ideas? I am literally about to change it all.
Did you figure it out? I have same year and same problem! 05 350z 98psi blowshot
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