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Erratic idle / very mysterious

August 8 2007 at 4:02 AM
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can someone,anyone please point me in the right direction so I can finaly fix this idle problem:
when the weather is hot(80+degrees)outside,its fine when i start and so on.however,when its cold and i start it idles high until the car is warmed up,then the chaos begins.up to 3500rpm then down.up and down,up and down.this is when im in neutral only.its eating up my gas!!!!i replaced the tps and it was ok for a month.what should i do?it also wont idle rough when im low on fuel.instead it idles right where it should be.any suggestions are much appretiated.

 
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HELP

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December 4 2007, 10:14 PM 

I have a 1992 Mazda Precidia, and yes it has an erratic idle but now it is -20 and it won't start, turns over but no go any suggestions?

 
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