User Profile

[Cornbinder89]

Make and model of the compressor would be a help. I have no luck replacing seals on some, other I have no problem. Some require a shaft protector when...

[Cornbinder89]

With the switch on and the system not functioning, continue working back toward the ECM from terminal 30, check each connection, and I think you'll find...

[Cornbinder89]

Try taking a voltage reading between #30 and ground when the problem exists, use a digital or Vacuum tube meter (one with high impedance) and see if you...

[Cornbinder89]

I didn't mean there was a dozen wires to the relay, rather that the wire passes thru multiple bulkhead or inline connectors before reaching the end. Each...

[Cornbinder89]

each oval with a number next to the wire indicates a plug and receptacle with male and female terminals. each must be checked for resistance/voltage...

[Cornbinder89]

I count about a dozen connecters on the coil circuit of the relay and at least 4 on the ground side of the coil alone. If I understand you correctly,...

[Cornbinder89]

1st and foremost, I don't have access to the wiring diagrams, so I am going off how it is described in the post. My understanding is the relay is not...

[Cornbinder89]

to be clear, there are two halves of the switch, one has 12 volt feed and controls the clutch, the other half sends a ground signal to the ECM for the...

[Cornbinder89]

It takes much more current to "pull in" a relay then to hold it in. You may have a bad connection with enough resistance that it can't pull...

[Cornbinder89]

I think were going to send you to the same place we did the original poster. Ignacio (Nacho) has the wiring diagrams to help trace the problem. Could...

[Cornbinder89]

High head pressure is caused by the condenser not cooling the gas and changing it to liquid. Are electric fans or engine driven fan used? It sounds like...

[Cornbinder89]

Red Dot and Kysor are two big names in heating and cooling. They designed or made parts for most of the heavy truck and industrial market for decades....

[Cornbinder89]

From what I can tell, this has none of the "Ford" body and likely nothing of a Ford truck would apply except what compressor was used and what...

[Cornbinder89]

try spraying the condenser with water while watching the pressures and vent temp. Also could be a stuck Tx (thermostatic expansion valve) that is stuck...

[Cornbinder89]

Why do you have the cycle switch set at 38 deg? You want the low side to be 28-32 degs (24.5 psi to 27.8 psi with R134a) there is always some temp difference...

[Cornbinder89]

The liquid line being "Hot" tends to contradict the high side pressure reading of 200, which would equate to 130 deg, so may be you are not...

[Cornbinder89]

How hot is that liquid line? According to your condensing pressure it shouldn'y be too hot, I know some have the orifice tube in the outlet of the condenser,...

[Cornbinder89]

I know nothing of the Ford E clutch but I had one car that had an electric clutch and it worked just like a compressor clutch. No matter if it is not...

[Cornbinder89]

I had a thought last night. What if the compressor is "weak" but not totally FUBAR? Say a leaking reed valve? the effect would be reduced flow/capacity....

[Cornbinder89]

I will defer to Ignacio, as he has much more experience, and on that make/model than I. Please, please report back on what you find and if you have s...