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94 Deville 01 Deville DTS
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73 Posts
Discussion Starter #1
My car has misfire code PO308,my upper radiator hose blew & sent antifreeze everywhere. I replaced the hose & refilled the system. Could the antifreeze blowing everywhere cause the coil pack to short out or cause issues with it.
 

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White Diamond '03 DHS (with DTS floor shift)
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86,783 Posts
Certainly. Pull the ICM connector and clean it with electrical contact cleaner and then a shot of WD40.
If that doesn't help you may have to pull the ignition cassette, but I doubt you'll have to go that far.
 

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Registered
94 Deville 01 Deville DTS
Joined
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73 Posts
Discussion Starter #3
Pulled the ICM & Ignition cassette & proceeded to clean the ICM & noticed the cassette had a hairline crack around the coil closest to the ICM. I reinstalled & the misfire is still there , so I replaced with a new ICM/coil cassette & all is fine now. Strangely enough, I determined it was the original ignition cassette, as was the upper radiator hose :suspense:.Thanks again Ranger
 
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