MacinTek

Before responding out of hand... apparently, 1991s have different AC plumbing than earlier models.

I'm trying to charge the ac. THe only easily accessible port appears to be the high-pressure port by the left strut tower. The only other port I can see is on the compressor, behind the alternator cooling duct. Is that the low port?

JohanvdWalt

I'd like to know the answer to this one myself, I had my '44 at three different a/c shops and none of them could find it. Over the years I had it done through the high pressure only and fortunately it worked every time.

gregeast

On my '87 951 the low port is down by the compressor.

Clint's 944

Behind the compressor on both my "once was" S2 and 87 951.

JohanvdWalt

Thanks guys.