What was the year of the Porsche 964?
Compared to previous incarnations of the 911, the 964 of 1989 introduced a level of complexity previously unheard of – particularly in the area of heating and ventilating. The system is often at the root of problems on older cars and can be readily misunderstood with fault diagnosis being difficult.
How does the Porsche 964 air conditioner system work?
These servo motors control the mixing of fresh and heated air (according to the heat selection on the CCU dial) and the routing of the air to the face level and footwell vents. The remaining 2 servos control the defrost (full heat and air conditioned air routed to the windscreen only) and recirculation (fresh air input cut off) functions.
Why does my Porsche 964 have a 30 amp compressor?
This was re-specified by Porsche in 1990 to a 30 amp part with no other changes. The 25 amp fuse will blow quite regularly whereas the 30 amp fuse will hold throughout normal usage. Failure of the compressor clutch to operate is most often because of a lack of gas pressure in the system (or the fan selector on “0”).
When to replace the Varioram blower on a Porsche 964?
Replacing your Varioram MAF is easy with these step by step instructions. Air management is critical on an air cooled motor, replace your ripped shroud air diverter right away. Removing the Varioram blower motor assembly is vital for working on the left side of the engine.
Compared to previous incarnations of the 911, the 964 of 1989 introduced a level of complexity previously unheard of – particularly in the area of heating and ventilating. The system is often at the root of problems on older cars and can be readily misunderstood with fault diagnosis being difficult.
How does the Porsche 964 heating and ventilating system work?
Heating and Ventilating The heating system in the 964 is very effective – much more so than most modern water cooled cars – since it derives heat from the exhaust. Whilst the engine is running the exhaust gets very hot and the heat exchangers which surround the manifold transfer much of that heat to the air within the exchangers.
Is the Porsche 964 the same as the Carrera RS?
These 45 cars were identical to a Carrera RS other than having airbags (with required electric windows), alarm system, American lighting, American bumpers, aluminum wheels, and standard seats.
This was re-specified by Porsche in 1990 to a 30 amp part with no other changes. The 25 amp fuse will blow quite regularly whereas the 30 amp fuse will hold throughout normal usage. Failure of the compressor clutch to operate is most often because of a lack of gas pressure in the system (or the fan selector on “0”).