ANOTHER AC problem!
value
07-21-2005, 05:24 PM
Hello,
On my 95 Blazer s-10 4.3 the AC clutch started acting up. It will not cycle back on after cutting out unless the engine is brought up to 2300 RPM. It will then cycle fine but every five minutes or so it will repeat the problem.
I replaced the low-pressure switch on the receiver-dryer, the system is fully charged and cools properly before the clutch stops cycling as it should.
Would one of the three relays up on the firewall be causing that? Is there a way to properly check them or is it a “replace and see what happens” deal?
Thank you, LS
On my 95 Blazer s-10 4.3 the AC clutch started acting up. It will not cycle back on after cutting out unless the engine is brought up to 2300 RPM. It will then cycle fine but every five minutes or so it will repeat the problem.
I replaced the low-pressure switch on the receiver-dryer, the system is fully charged and cools properly before the clutch stops cycling as it should.
Would one of the three relays up on the firewall be causing that? Is there a way to properly check them or is it a “replace and see what happens” deal?
Thank you, LS
value
07-22-2005, 02:27 PM
[QUOTE=value]Hello,
On my 95 Blazer s-10 4.3 the AC clutch started acting up. It will not cycle back on after cutting out unless the engine is brought up to 2300 RPM. It will then cycle fine but every five minutes or so it will repeat the
----------------------------------------------------------------
I found the problem! The gap on the clutch plate grew too wide.
Taking the end plate off and removing the required amount of shims (washers) lessens the gap or clearance
On my 95 Blazer s-10 4.3 the AC clutch started acting up. It will not cycle back on after cutting out unless the engine is brought up to 2300 RPM. It will then cycle fine but every five minutes or so it will repeat the
----------------------------------------------------------------
I found the problem! The gap on the clutch plate grew too wide.
Taking the end plate off and removing the required amount of shims (washers) lessens the gap or clearance
BlazerLT
07-25-2005, 12:30 PM
Also check the amount of refrigerant.
Low refrigerant will also cause this.
Low refrigerant will also cause this.
vballfun
07-26-2005, 10:54 AM
[QUOTE=value]Hello,
On my 95 Blazer s-10 4.3 the AC clutch started acting up. It will not cycle back on after cutting out unless the engine is brought up to 2300 RPM. It will then cycle fine but every five minutes or so it will repeat the
----------------------------------------------------------------
I found the problem! The gap on the clutch plate grew too wide.
Taking the end plate off and removing the required amount of shims (washers) lessens the gap or clearance
This sounds almost exactly like what is happening to my 95 s10 4.3 blazer as well.. cuts off after a while.. and only way to get A/C cooling again is to go above about 2100 RPM... is this a difficult fix? Where is the 'clutch plate' located? I didn't think the clutch that years A/C was 'servicable'... that you had to replace the whole compressor? Is this something that can be done without violating the 'integrity' of the A/C/freon system... I don't have the tools to recharge or vacuum the system.
Also, what is the correct 'gap'.. if yours was too wide.. what was it.. and what should it have been (so I can compare to mine)
This same thing happened to my blazer about 4 years ago.. and eventually the A/C just gave up and never cooled anymore... and about 3 months after that.. the pully on the compressor just decided to lock up.. burning up my belt... A/C shop I took it to that replaced the compressor said that the clutch isn't seperate fromthe compressor.. so I guess I just assumed it couldn't be 'serviced' seperately.
-Tim
On my 95 Blazer s-10 4.3 the AC clutch started acting up. It will not cycle back on after cutting out unless the engine is brought up to 2300 RPM. It will then cycle fine but every five minutes or so it will repeat the
----------------------------------------------------------------
I found the problem! The gap on the clutch plate grew too wide.
Taking the end plate off and removing the required amount of shims (washers) lessens the gap or clearance
This sounds almost exactly like what is happening to my 95 s10 4.3 blazer as well.. cuts off after a while.. and only way to get A/C cooling again is to go above about 2100 RPM... is this a difficult fix? Where is the 'clutch plate' located? I didn't think the clutch that years A/C was 'servicable'... that you had to replace the whole compressor? Is this something that can be done without violating the 'integrity' of the A/C/freon system... I don't have the tools to recharge or vacuum the system.
Also, what is the correct 'gap'.. if yours was too wide.. what was it.. and what should it have been (so I can compare to mine)
This same thing happened to my blazer about 4 years ago.. and eventually the A/C just gave up and never cooled anymore... and about 3 months after that.. the pully on the compressor just decided to lock up.. burning up my belt... A/C shop I took it to that replaced the compressor said that the clutch isn't seperate fromthe compressor.. so I guess I just assumed it couldn't be 'serviced' seperately.
-Tim
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