Ratman

I have a 1995 Nissan Sunny (Sentra to those not in Japan). When I turn on the A/C, the engine dies. If I turn it off and start it again, it runs a bit rough at first, then everything is normal. Until I try the A/C again. I can push the button for the air if the fan is off, and there is no problem. It only happens when the fan is on. If I rev the engine while I do this, it will stay on until I let up the gas. If the A/C button is off, the fan works fine (defog, etc.).

I knew about this when I bought the car. The guy I bought it from had taken it to the Nissan dealer here, and they told him it was probably the fuel injectors- either the seals or the injectors themselves were cracked.

It seems to me that if the fuel system was involved, it would be a more constant problem regardless of the A/C. It sounds to me like a vacuum leak somewhere that is only present when the A/C is actually trying to pump.

It's a '95, 1.5 liter, manual trans, 110,000 km (about 65k miles?) on the clock. After I bought it I had to get the inspection where they check everything, had all the filters replaced (including the A/C filter). There were no problems with the basics systems, no oil or fuel leaks, good spark, etc. It gets about 10k/liter (25mpg) in town.

Any ideas? I'm about to take it in to get it fixed before the truly brutal part of the Japanese summer hits.

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