Coil on Plug conversion?
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Cadillac Catera and Cimarron Forum Discussion, Coil on Plug conversion? in Past Cadillac Vehicle Discussion; Needing to replace the coilpack and plug wires on my 97, started pricing parts, looked like it might be time ...
  1. #1
    Zapmk is offline Cadillac Owners Member
    Automobile(s): 1997 cadillac catera
    Join Date
    Feb 2010
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    Coil on Plug conversion?

    Needing to replace the coilpack and plug wires on my 97, started pricing parts,
    looked like it might be time to do a switch, and maybe way cheaper too.

    Didn't find much info:
    Did the valve covers change on 99/2001 for the coil on plug ignitions.
    Anybody have a wiring diagram.

    Looks like the newer coil on plug packs use a 5 pin plug, could/might not be a problem, makeing wiring harrness is not a problem for me.

    Input please.

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  3. #2
    AHazzardToAll's Avatar
    AHazzardToAll is offline Cadillac Owners Enthusiast
    Automobile(s): 1999 Catera Sport
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    Re: Coil on Plug conversion?

    You would need to make the wiring harness, and change your valve covers over as well. Have you looked into just making a wiring harness for an after-market coil pack? I don't know what prices run on them, but if you're just trying to stay away from the 97-98 coil packs that might be a good route to look into.

  4. #3
    AHazzardToAll's Avatar
    AHazzardToAll is offline Cadillac Owners Enthusiast
    Automobile(s): 1999 Catera Sport
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    Re: Coil on Plug conversion?

    Ps, if you do follow through on it (converting to 99-01 coil system) try and pick up a set of saturn valve covers, they aren't plastic so won't warp like ours.

  5. #4
    Zapmk is offline Cadillac Owners Member
    Automobile(s): 1997 cadillac catera
    Join Date
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    Re: Coil on Plug conversion?

    Thanks for the input.

    Had the oil in the hole, took out part of the coil with it, kill two birds with one stone sound good to me.

    Found some pic's of the saturn covers, big rectangular holes for the coil packs,
    oil filler hole in a different location, shouldn't be to much of a problem.

    Stock Wiring, coil one power three grounds.
    coil on plug, five pin, assuming three grounds one power, fifth pin??

    Stock ECU switchs the three grounds off/on, is the Ecu different for the coil on plug?

    Need to do some digging for a wiring diagram for coil on plug.

  6. #5
    USEDCAT is offline Cadillac Owners Fanatic
    Automobile(s): Catera 2001
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    Re: Coil on Plug conversion?

    Quote Originally Posted by AHazzardToAll View Post
    You would need to make the wiring harness, and change your valve covers over as well. Have you looked into just making a wiring harness for an after-market coil pack? I don't know what prices run on them, but if you're just trying to stay away from the 97-98 coil packs that might be a good route to look into.
    Are you looking for performance, standard solution won't work or just cheaper solution? I don't know if it will be any cheaper than the following,

    http://cgi.ebay.com/ebaymotors/Cadil...item2309a3b231

    Good luck.

  7. #6
    AHazzardToAll's Avatar
    AHazzardToAll is offline Cadillac Owners Enthusiast
    Automobile(s): 1999 Catera Sport
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    Re: Coil on Plug conversion?

    Quote Originally Posted by USEDCAT View Post
    Are you looking for performance, standard solution won't work or just cheaper solution? I don't know if it will be any cheaper than the following,

    http://cgi.ebay.com/ebaymotors/Cadil...item2309a3b231

    Good luck.
    Bosch, 1yr, cheap. I'd prob go that route as well...

  8. #7
    Zapmk is offline Cadillac Owners Member
    Automobile(s): 1997 cadillac catera
    Join Date
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    Re: Coil on Plug conversion?

    wasn't looking for performance just a cheaper solution, coils run about 375, plug wires
    165, and thats aftermarket here in the midwest.

    Coil on plug 102 a side, no plug wires,found a set of alum saturn valve covers for 75.
    still haven't found a wiring diagram

    Not a fan of buying things on line but that is alot cheaper solution, thanks for the link.
    anybody buy from them?

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