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Cold start glitch 900 93

A situation occurs when I start the car on very cold vs cool mornings. When the temperature is moderate (50F or so), the car starts and runs fine. When the temp drops, the engine runs very roughly for the first minute or so, no check engine light however, then all is well again.

The silver hose from the intake is OK, plugs etc are new. It sounds as though the cold-cold start function is not working properly. FAQ suggests things like block sensor, possible? Is there some cold injector that may be mis-firing? It went to the shop but here in NY lately, the temps have been too mild for the syptoms to manifest themselves.

Any suggestions would be appreciated.

945 non turbo, 103Kmiles






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