my 95 s10 with a 2.2L manual has a problem it wants to die (stumbles) and when your at a stop sign it idles high for a while then revs down to normal it doesnt act up all the time just like every other day, the other day i started it up 3 time and it just kept dying. i've heard the alternator but i wouldnt think it would make my truck idle high and i have also hear idle control module whichs sounds more realistic but i dont know and dont want to spend $100 on nothing. please help

 

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