I have a 1994 Toyota Landcruiser that had developed weak A/C air. So, I decided to buy a few cans of R134 and charge it myself. The first can went in pretty well, but then during the second can, the A/C started cycling on and off pretty rapidly (it would stay neither on nor off for very long). What have I done wrong? Can I remedy this by adding more? Have I added too much? (I was told that the capacity in this car was pretty large) Thanks so much for this help. I promise I'll try and stick with Mercedes related questions next time. I participate in this Landcruiser only forum but they're not usually too helpful.

Alex

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1983 300D (parked for four years)
2012 VW Sportwagen TDI Manual
2001 Miata SE
1962 Chevrolet Corvair Rampside