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Old 12-25-2007, 10:36 PM   #1
tokidokiid
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Default 2002 sl2 misfire, firing order?

i've had a check engine light since i got my car (bought salvage then fixed) i tried changing the spark plugs (autolite's platinum) since i had a misfire on cylinder #1 and that fixed my check engine light but then the next day i changed the wires and i thought i replaced them exactly how they went but the check engine light came up and i went to autozone the people there were very helpful i replaced the coil pack on the left (right one:stock), the guy tried helping me rewire them since i got a new set of wires for free because he thought it might be bad wires, i was able to drive off the lot w/no check engine light but a few blocks from home the lamp when on again and i got it checked out and its cylinder one again (the misfire changed cylinders when the wires were wrong), sorry if this is a long explanation or what not but i just need to know which wires go were, what is hte firing order and could this be caused by a diff problem. i've read various forums trying to find the answer but now i joined simply to ask. can anyone provide a diagram or at least a dumb-version for me since i really want this to be clear to me (long wire here, etc etc)

Last edited by tokidokiid; 12-25-2007 at 10:36 PM. Reason: typo
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Old 12-25-2007, 11:09 PM   #2
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Default Re: 2002 sl2 misfire, firing order?

Well, if things haven't changed any the firing order would be 4,1,2,3 and facing the engine cylinder order 1,2,3,4.
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Old 12-26-2007, 12:49 AM   #3
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Default Re: 2002 sl2 misfire, firing order?

Hopefully this will help:Originally Posted by Luke
Reading the spark plug wells, from left to right, as:

[1]> > > [2]> > > [3] > > > [4]

The respective plugs wire should sit on top of the coils as:

[4]> > > [1]> > > [2] > > > [3]

With the above in mind, the top of the left most coil, should go to plug well [4].

The second from the left coil [2], should go to spark plug well [1]
The third from the left coil [3], should go to spark plug well [2]
the fourth from the left coil [4], should go to spark plug well [3].

There should be a graph on the center of the engine compartment's radiator, just where the hood latches to the center grill area.
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Old 12-26-2007, 12:51 AM   #4
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Default Re: 2002 sl2 misfire, firing order?

I'm sorry I am unable to post a picture for you...
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Old 12-26-2007, 07:13 AM   #5
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Default Re: 2002 sl2 misfire, firing order?

Quote:
Originally Posted by tokidokiid View Post
i've had a check engine light since i got my car (bought salvage then fixed) i tried changing the spark plugs (autolite's platinum)
saturns hate platinums.....
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Old 12-28-2007, 04:35 PM   #6
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Default Re: 2002 sl2 misfire, firing order?

thanks for your help i'll try it today but why do saturns hate platinums?

also, does the length of the wire matter?
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Old 12-28-2007, 08:53 PM   #7
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Default Re: 2002 sl2 misfire, firing order?

Quote:
Originally Posted by tokidokiid View Post
thanks for your help i'll try it today but why do saturns hate platinums?
Not ALL Saturns hate Platinums and not ALL Saturns hate Bosch plugs. Mine ran perfectly well and got good mileage with platinum plugs with the (fixed gap) dual ground electrodes. Obviously, I have not tried every platinum plug on the market.

OTOH, the stock NGK plugs seem to perform as well as anything else so why waste the money on more expensive plugs? I bought the platinum plugs before I found this forum, BTW!
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Old 05-12-2013, 04:14 PM   #8
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Default Re: 2002 sl2 misfire, firing order?

ty redkees, my owners maual lists 2002 saturn firing order @ 1342, after several failed attempts, & 3-4 hours of research. Your reply nailed it, by the radiator up front is firing order 4123.
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