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So I have a p0300 misfire code with the SES flashing at me. I also have RIM U1000 and a IPC U1000. I did some research on the forum suggesting to replace the ignition coil module/pack. Per Logan's posts about what a common problem it is, I should just replace the packs. What I would like to know is there a way I can test for this before spending the 200 bucks for a new one? I had the spark plugs replaced about 2 years/44000 miles ago. I have driven 30000 miles on it in the last year just for some quick history. As I have the ignition pack out and am looking at the boot that goes down to the spark plug, am wondering if this could be part of the problem as just a spring is getting the spark down to the plug from the ignition pack. Or should I replace those boots as well?

thanks to all for this great forum as I use it often.

koushka

Edited by koushka
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the boots are kind of pricey, about $4 a piece if I remember right but a good idea to change them!

I had a misfire and changed the plugs and boots and eventually did the coil pack. By taking out the plugs I was able to see which cylinder wasnt firing.

The coil packs have the module and coils all in one piece on each bank of cylinders but theyre encased in epoxy so you cant fix anything on them. I think the modules go out but you cant buy just that part either.

I found a used one for $60 I believe. Front ones are silver and back ones are black, but other than that they are exactly the same. Just paint it if you find a used one thats the wrong color.

Try car-part.com

Edited by CoupeDTS

* 1966 Deville Convertible

* 2007 Escalade ESV Black on Black

* 1996 Fleetwood Brougham Black on Black V4P -Gone
* 1983 Coupe Deville Street/Show Lowrider -Gone

* 1970 Calais 4dr Hardtop GONE
* 2000 Deville DTS - Silver with Black Leather and SE grille GONE
* 1999 Seville STS - Pearl Red GONE

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i dont think anyone makes anything aftermarket. There wont be a high performance option or anything. Just original or a company that makes them to oe standards.

* 1966 Deville Convertible

* 2007 Escalade ESV Black on Black

* 1996 Fleetwood Brougham Black on Black V4P -Gone
* 1983 Coupe Deville Street/Show Lowrider -Gone

* 1970 Calais 4dr Hardtop GONE
* 2000 Deville DTS - Silver with Black Leather and SE grille GONE
* 1999 Seville STS - Pearl Red GONE

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Ok thanks guys for the reply's. Next question is can I go with an aftermarket coil pack or should I keep it factory?

koushka

Aftermarket coil packs from Airtex/Wells, AC Delco, Delphi and Standard you can see them at www.rockauto.com

Personally, I would go with what you can afford, that is what I do, but I try never to use the cheapest brand as I believe that you get what you pay for.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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So I ordered the standard one from Rock Auto, was here in a day, installed it and the car is back to purring like a kitten! You guys rock! Thank you so much for all your help.

Koushka

Glad to hear it,

Consider joining us as a supporting member there are benefits, its a cheap annual fee and you will help support this great resource.

Let us know how we can help, Mike

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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