still running sluggish

1998 PONTIAC GRAND AM
180 MILES
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SARAH142
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I have a 1998 grand am gt 2.4. The motor blew so i replaced it. i have also replace spark plugs, wires, coil packs and it is still running sluggish. it doesn't seem to want to go. any ideas on what will help? the first time I replaced the coil packs it ran great and it was used. after a few days it went back to running rough. i have now bought brand new coil packs and its a little better but it dont wanna go.
May 3, 2012 at 3:34 AM
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FIXITMR
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CEL on? get codes read
May 3, 2012 at 4:10 AM
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SARAH142
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there is no check engine light.
May 3, 2012 at 4:15 AM
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FIXITMR
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does it come on when you turn key on and go off after starting?
May 3, 2012 at 7:03 AM
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SARAH142
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no i tore the dash apart to replace the bulb and it seems that at some point someone saudered the bulbs to the board. icould not remove the bulb. Guessing im gunna have to replace the whole board to get the CEL light to work.
May 4, 2012 at 8:00 AM
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WRENCHTECH
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I would try changing the white coil housing. It's very common for them to cause misfire on that engine.
May 4, 2012 at 9:55 AM
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SARAH142
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Ok guys I got scanned and it says misfire on 1 and 4. Also changed crankshaft position sensor and bad fuel injector. And it still runs horrible. I also changed the coil housing so many times I've lost count. I need help. :)
May 4, 2012 at 9:29 PM
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WRENCHTECH
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Your question stated that you changed the coils, not the coil housing.
May 4, 2012 at 9:47 PM
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SARAH142
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Well I've tried everthing I've been advised to do and still nothing.
May 4, 2012 at 11:11 PM
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WRENCHTECH
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If you have a misfire it can only be spark, fuel or compression. You can rig up spark testers to verify spark, take a compression test and do an injector balance test.
May 4, 2012 at 11:21 PM
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SARAH142
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Does it mean anything that the 1 and 4 cylinders are misfiring consistently? They had the exact same amount of misfires shown on the scanner.
May 4, 2012 at 11:30 PM
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WRENCHTECH
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Yes it does because those 2 cylinders are controlled by the same coil so you can probably assume it is a spark problem. If it's not the coil, that leaves the ignition control module or related wiring.
May 4, 2012 at 11:46 PM
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