Check engine light on after changing spark plugs.

06caurru

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Hello,
I have a 2010 1500 with the 5.7 Hemi. I changed the spark plugs tonight, and after doing so, the check engine light is now on (steady, NOT flashing), and feels like it’s chugging. The plugs I removed were NGK OEM plugs that have been in the engine since I bought it brand new. I replaced them with NGK iridium plugs. Is this year range of Hemi only work with copper plugs? Am I overlooking something else? I’m not a mechanic, but am mechanically inclined . I’ve read conflicting info on the interwebs, so trying to get some clarification and some input.


Thanks in advance.
 

DILLIGAF

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You put to much anti seize on them ;) pull them and wipe them down.
 
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06caurru

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I’m just an idiot. I was going to tear everything apart again today, and immediately noticed an unhooked wire/connection. Reconnected that, and runs smooth now. Just gotta wait for check engine light to go off now. Thanks everyone for the replies! Sometimes it helps to just step away and/or sleep on it haha!
 

Rlaf75

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I’m just an idiot. I was going to tear everything apart again today, and immediately noticed an unhooked wire/connection. Reconnected that, and runs smooth now. Just gotta wait for check engine light to go off now. Thanks everyone for the replies! Sometimes it helps to just step away and/or sleep on it haha!
Dont wait for it to shut off. Get it cleared
 

Burla

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You should still look at upgrading coil packs to run those iridiums.
 

EdGs

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You are not an idiot, and definately not the first one that has done this very thing or something similar.

Isn't it a big relief to go from the dread of thinking you're going to have to tear into something again, to spotting that one connector still unhooked?

Glad you got it sorted out.

As Burla said, look into upgrading your coil packs for the iridium plugs.
 

Wahrsuul

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2015 or later coil packs should work I believe. But they're pricey for a full set.
 
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06caurru

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I found two different TRQ brand could sets- one, I’m assuming standard, for $188, and a “performance “ set for $250. Anyone have experience with this brand?
 
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