I have a 1990 cherokee limited and my ecu went out it was a 8953005428 and i put a 8953005225 in. it starts up and idles but cuts out bad 1200rpms unless i floor it.is there something i can do to make this ecu work right?WITH the (5425)ecu i have voltage to my injectors and voltage to my coil but no spark i checked my relays,cps and fuses and all checked out ok so i changed ecu to a (5225) and in park or neutral it idles great until about 1200rpms then acts like its on 4 cyl. then i put it to the floor and it acts rite.the new ecu came out of the same year and had the same transmission.IF ANYONE KNOWS WHAT I NEED TO DO OR HAS IDEAS PLEZZZZZZZZZZZZZZZZZZZZZZ HELP.
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