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hi guys im pretty new to this sooooo.
anyways i been recently workin on my 1997 ford escort lx and i put in an air fuel ratio gauge because i been told it would be a good idea since the mods i have been doing. i was told to hook a wire up to another certain wire that runs to my pcm. so i did that and my car has been freakin out on me but not so much anymore since i connected the wire to the gray with green stripe wire after the connector leading from my o2 sensor comin from the header. my only problam lately is that when i idle my cars rpms will drop really really low and my car will act like it wants to die but then it goes back to normal for awhile. and when im drivin acceleration is really low for a few seconds and then the power really kicks in AND whenever i hit pretty decent bumps on the road my car will drop rpms and jerk until i let off the gas and during that two second jerk my check engine light comes on but then goes back off so i cant hook my car up to the obd2 sensor deal. i was just wondering if anyone has ever had this problem and if they got it fixed and what they did to fix it or if anyone just knows what the hell is going on
 

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If the check engine light comes on it stores the code in the ECU for a limited number of restarts, so you should be able to pull the codes and find your problem.
 
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