Tried putting freon in my delta 88 2 door system but to no avail it wouldn't take. So I took a wire and jumped the compressor and now I have power. I take the wire off no power to the compressor. Can anybody help me with this. Is it minor or major.

 

What year is this Delta 88 ?

 

 

The 1985 cars use a clutch cycling orifice tube (CCOT) A/C system. There is a pressure switch in the system that interrupts power to the compressor clutch if freon pressure is too low. If adding freon doesn't fix the problem, that switch may be bad.

 

where is this pressure switch located

 

 

Should I go ahead and change out the orfice tube. I really appreciate your time and effort.

 

Without knowing the status of your A/C system, that is impossible to answer. Obviously you need to evacuate the freon before you can do that. Has the compressor been replaced recently? I would start by throwing a set of gauges on the system and seeing exactly what pressure you have. Also, disconnect the plug from the switch and jumper across the two terminals in the connector. Now see if the compressor clutch engages. If so, either you are low on freon or the pressure switch is bad.

 

did everything you listed above new pressure switch install still nothing. Jumped the compressor from battery. No power at connector at low power switch. No the compressor hasn't been switched. Was working fine when I bought the car a couple of years ago. Blew ice cold.

 

At this point, get a test light or voltmeter and trace the circuit until you find where the power stops.

 

This book may be very helpful.
1985 Oldsmobile Electrical Troubleshooting Man Cutlass Supreme Delta 88 Toronado | eBay

Do you have a set of gauges to measure the high and low side pressure in the system?
If so, what do they read with the compressor off? And on?

 

went ahead and sent it to the ac shop. They found a leak at the low pressure switch. Also the guy told me that the computer is gone out. Therefore power isn't getting to the low pressure switch. What does all of this mean?

 

Whenever someone says "the computer has gone out", it pegs my BS meter. The computer is nearly never the cause of a problem. It is far more likely that one of the electromechanical parts (relay, sensor, etc) has gone bad, or worse, that it was simply dirty/corroded connections. Of course replacing the computer requires disconnecting and reconnecting the electrical connectors. This wipes away the corrosion, everything works again, so obviously it had to have been the computer that needed to be replaced. Of course, simply disconnecting and reconnecting the original computer would have accomplished the same thing.

First question is, do you have the Temptronic/Comfortron electronic A/C or the regular manual A/C? The Control head on the Temptronic system will have temperature markings on the lower slider (65, 70, 75, etc). The manual A/C just says HOT and COLD. Is the shop talking about the engine control computer or the Temptronic programmer? The Temptronic system does have a lot of failure modes.

If we are talking about the manual A/C, the only connection from the computer to the A/C compressor is a single wire that controls a relay on the compressor clutch, and the only purpose of that connection is to temporarily cut power to the clutch at wide open throttle to provide a tiny bit more engine power for passing. Note the relay in the diagram.

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Disconnect the relay and check for power at the green wire to the relay (terminal B). If there is power, jumper from B to E. Do you get power at the compressor clutch plug? Does the compressor turn on? Note that the pressure switch is in the ground side of the circuit, not the power side, so you might need to also jumper across that plug if the pressure is still low.