What kind of refrigerant does a 928 S4 use?
During a Spring get-to-together of area 928 owners (details) we learned about R-12 to R-134a conversions. Our host mechanic Joel Roeder provided some history of the changes to refrigerant, and told how the newer oils are improving R-134a compatibility with our older R-12 systems.
Is the Porsche 928 receiver / drier relatively expensive?
I called 928 Specialistsand learned that the Porsche receiver/drier is relatively expensive. “However…” they sell an alternate (about one-third of the cost) that is a similar fit and I had no problem whatsoever (this unit is a bit narrower so I added a piece of rubber between it and the bracket to keep a snug fit).
Why do I have trouble shooting my Porsche air conditioner?
For R12 systems, if you see a strong stream of small bubbles you are low on refrigerant. With R134a systems or conversions we are not to concerned with refrigerant flow observed at the sight glass because the flow can be cloudy and little if any (with R134a you are more concerned with pressures and temperatures).
When did John Pirtle change his Porsche 928 S4?
Porsche 928 S4 Service John Pirtle, May 7, 2003 http://members.rennlist.com/pirtle Air-conditioning During a Spring get-to-together of area 928 owners (details) we learned about R-12 to R-134a conversions.
For R12 systems, if you see a strong stream of small bubbles you are low on refrigerant. With R134a systems or conversions we are not to concerned with refrigerant flow observed at the sight glass because the flow can be cloudy and little if any (with R134a you are more concerned with pressures and temperatures).
Where are the ground wires on a Porsche 928?
One is at the top of the “O” in the word Porsche cast into the cam cover — and it may be covered-up by the emissions air injection valve/hose. The second attachment point on the cam cover is more visible and is closer to front of car. Point 10 For later Euro cars, look for ground wires attached to the back of cam gear metal rear covers.
Where is the injector harness on a Porsche 928?
They ground the engine electronics & the injector harness. One is at the top of the “O” in the word Porsche cast into the cam cover — and it may be covered-up by the emissions air injection valve/hose. The second attachment point on the cam cover is more visible and is closer to front of car.
Where is the positive wire on a Porsche air conditioner?
Friction takes over and the two pieces turn in unison. So, let’s shut off the engine and locate the clutch’s wire. The wires are usually found toward the back side of the pulley close to the body of the compressor. The positive wire should have a connector somewhere it to get it’s power. Carefully disconnect the connector.