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PTU
How to install a Series 2 PTU (Printable PDF with images)
on 14 Nov 2007 by admin author list
How to install a Series 2 PTU (Printable PDF with images) How to install a Series 2 Power Transistor Unit (PTU) By now it is common knowledge that the series 1 PTU seems to be a common point of failure.  These units were fitted to the series 1 Z32 '89 to late '93 and were recalled in Japan and the US [read more]
Moving the PTU - Option 1
on 15 Nov 2007 by admin author list
It would seem, by the number of reports of problems with it, that the PTU is the "Achilles Heel" of this otherwise brilliant car. Nissan realised this, and in mid 1993 replaced the PTU with a more reliable unit. This article is therefore only of use to pre 93 PTUs; if you have the newer version it should not be [read more]
Moving the PTU - Option 2
on 15 Nov 2007 by admin author list
As you are probably aware by now, the PTU in the Z32 is a problem. The belief is, due to the heating and cooling of the PTU during it's life, the electrical connectors become stressed and break. You may be lucky and have some hesitation for several weeks or months before it stops working all together, or it will just [read more]
Moving the PTU - Option 3
on 23 Nov 2007 by admin author list
Moving the PTU Here is a simple explanation of how to re-locate the PTU to the nose - in front of the radiator. Please read methods one & two full write-ups, for background detail. This location entirely satisfies the main criteria for relocating the PTU in the first place, namely heat & vibration degradation. In this location, not only does the PTU run [read more]
PTU Testing
on 15 Nov 2007 by admin author list
Clicky for the test procedure [read more]
Series 1 PTU repair
on 15 Nov 2007 by admin author list
Introduction This article concerns the Type 1 power transistor unit (PTU) that is installed in the Nissan 300ZX (Z32) motor vehicle. This model PTU is manufactured by Mitsubishi and is prone to fail without notice. Unfortunately, I understand that it is not a matter of if the PTU fails but when it will fail! The most typical symptoms of a PTU failure [read more]