Quote:
Originally Posted by DieselPaul
Hello
I asked the head mechanic in my warehouse he said
If you by pass the electric direct to the coil and the compressor working good and cool that mean the compressor and ac system working Ok but if you hook the wire on the plug of compressor and the clutch not engage you have to check the electric system it is not the cause from the speed sensor switch because the speed sensor on the rear of compressor will working only the compressor has too much pressure or too much high speed and it will working when the magnetic inside the swash plate in the compressor turn too much speed and it will make the speed sensor close the circuit and send the signal to the electric system and cut off the electric to the coil
In your case my head mechanic said the compressor Ok and coil Ok and if you check the ohms on the speed sensor is nothing ohms that mean it's Ok ,
You have to check your ac electric in the car system.
Please let me know
Thanks,Tommy
This was their reply to me saying their speed sensor tests bad.
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This is a looong sentence which I have difficulties to comprehend. Let me ask you a few questions.
1) Why you need to change out the old/bad compressor?
2) Was the Kilma relay working before, i.e. it was controlling the old/bad compressor OK?
3) How you managed to charge 3 cans of R134 without the compressor ever running? I always jumped the freon ( low ) pressure switch at the recv/dryer to charge. If it never ran, how you charged it?
4) Have you checked the low pressure switch? Is it open circuit or closed?
I have modified the Kilma relay on a SDL to by-passed the speed sensor. The modify kilma only monitors the low pressure sensor and ignored the rest. It has been running for 2 years+ will no effect.