Why is my Porsche 944 air conditioning not working?
Why is my Porsche 944 air conditioning not working?
Porsche 944 Air Conditioning Part IIIa 7-15-2010 The A/C just turned off while driving. Pressure seems good, the compressor clutch engages when jumpered to 12V. But the compressor is not getting 12V when the A/C is turned on. The shop manual suggests troubleshooting from the low-pressure cutoff switch on back, which makes sense.
How do you add oil to Porsche 944 air conditioner?
Hook up R134 can to hoses (purge air from line) This is a good time to add oil, if needed. Pour some in the hose, the R134 will push it into the system. Open high-side (red) valve. This will let some of the R134 go into the system. Once you’ve got as much as will go in there (putting the can in warm water helps), close the high-side valve.
What kind of repair can I do on my Porsche 944?
Cam collar “issue” (944Online.com) Cargo cover repair (clarks-garage.com) DME control unit – Chip installation (including KLR chip for Turbos) (clarks-garage.com) Detailing your Porsche (pelicanparts.com) Concours corner: Cleaning your engine part 1 (pelicanparts.com) Concours corner: Cleaning your engine part 2 (pelicanparts.com)
Can you use PAG oil in a Porsche 944?
It does not mix with the mineral oil used in R-12 systems, so all the old oil must be cleaned out. There is also POE (polyol ester) which is supposedly less incompatible with mineral oil and is compatible with PAG oil. Porsche Service Bulletin for 944/951 A/C Retrofit
How to troubleshoot a Porsche 944 air conditioner?
At the beginning of the troubleshooting instructions Porsche should specify “if nothing on your climate control unit works (except for the fan) then that just might be the problem, dude.’ If Porsche had specified that it would have save me a lot of trouble dicking around with my gauge set and voltmeter.
How does the idle contact display work on a Porsche 944?
Idle contact display: Slightly press the accelerator. The LED must go off after approx. 20 mm and the display will appear After approx. Page 22 Initiale the air-conditioning control terminal testing step. Display: Switch on the air-conditioning system. The LED must go off and the display will appear after approx. 3 s.
Is the Porsche 944 s capable of self diagnosis?
Page 13 DME control unit error diagnosis 944 S as from 88 model As from model year 88, the DME control unit 944 S is capable of a self-diagnosis. That is to say, the control unit is capable of detecting, storing and displaying system errors.
It does not mix with the mineral oil used in R-12 systems, so all the old oil must be cleaned out. There is also POE (polyol ester) which is supposedly less incompatible with mineral oil and is compatible with PAG oil. Porsche Service Bulletin for 944/951 A/C Retrofit
