Question about 1998 Buick Century

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Replaced all the gaskets car will start but having trouble idling and seems to be misfiring, changed the plugs and wires but still have the problem what is the firing order and diagram

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What engine you got in there 3.1 right coil pack in the back?
pulleys<--------135
246
firing order 123456
look at coil pack from from of car 523641
left to right

Posted on Jul 16, 2010

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This will help.

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Have a 2003 Taurus, 3.0 engine that has a misfire on #2 cylinder. Replaced all spark plugs, wires, coil, replaced the fuel injectors, crank sensor, cam sensor, still have a misfire on #2 cylinder. It has...


Sound like an air / vacuum leak to me.
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When idling my 2003 Acura TL the engine seems to want to almost die, also when i got on the freeway it seem to pull hard and **** like it was having trouble shifting into 5th gear. It also seems to run...


You may need to change the coil pack(s) or modular. The modular is what the coil pack(s) mount to. I'm not familiar with that engine so you may have a 3 piece coil pack, or a 1 piece. (If it doesn't have a distributor). You may first try replacing the coil wire. There is a good chance that is loose, or bad. It could also be the coil itself. Try the coil wire and if it still acts up, then try the others. Also, when you changed the plugs, did you put new plug wires? When I do a tune up on my vehicles, I change the plugs, wires, distributor cap and rotor, (coil pack,modular), whichever is equipped, oil, oil filter, tranny fluid and filter with gasket, valve cover gaskets, oil pan gasket oil filter, and fuel filter. Try changing the fuel filter as well, as plugged or dirty fuel filters can cause stall outs. I hope this information helps. Thank you for choosing fixya.com for answers.

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