Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons in Past Cadillac Vehicle Discussion; I did a search and found conflicting ac delco part numbers. Does anyone have part numbers for the following. AC ...
  1. #1
    Canadian 93 Deville is offline Cadillac Owners Member
    Automobile(s): 1993 sedan Deville
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    Smile Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons

    I did a search and found conflicting ac delco part numbers. Does anyone have part numbers for the following.

    AC spark plugs
    Ac wires and cap rottor
    Ac egr
    Ac fpr.

    I had my emission test and I failed.The car sat for 5 years and I guess I didn't clean here out good.Oil/filter/throttle body cleaner,coolant ,sat, breaks rottors,fuel filter.

    They made me do a 2 speed idle emissions test.
    2500 rpm Idle rpm
    HC ppm /limit/reading Limit / Reading
    200 252 200 761 Fail
    Co% 1.00 8.42 1.0 9.19 Fail

    I only found the pvc unplugged and I also changed that after. Any Ideas?

    Thanks again.

    Mike
    1993 sedan deville 4.9 engine B

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  3. #2
    Dave S Texas's Avatar
    Dave S Texas is offline Cadillac Owners Enthusiast
    Automobile(s): '87 Coupe DeVille 4.1L FWD(New engine '08) 1981 F100 '03FXDL
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    Re: Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons

    The part numbers are easily available at your parts store/every online parts store there is and in your owners manual. Simple to look up yourself.
    Since the vehicle sat so long, it needs to be driven. Look for the WOT procedure here in the 'tech' section. Once you get ready for a follow-up inspection: fill almost empty gas tank with Prem gas and take a 25mi/more highway run ending at the inspection station.

  4. #3
    Canadian 93 Deville is offline Cadillac Owners Member
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    Re: Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons

    Thanks for the reply. I was just wanting to make sure. I found plug numbers to be different .On this site I found AC 41-950 and at the dealer it was ac 19158043 ? and at a parts store they were AC41-920 . I just want to make sure. For some reason when I do a search ,it comes up not what I was asking for and gived me pages upon pages that I have to look through to see what info I can use. Maybe I am searching wrong.

    Thanks
    Mike

  5. #4
    Ranger's Avatar
    Ranger is online now Cadillac Owners Member
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    Re: Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons

    41-950's are for the 4.6 Northstar. Check http://www.rockauto.com

  6. #5
    AMENCADDY's Avatar
    AMENCADDY is offline Cadillac Owners Enthusiast
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    Re: Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons

    This is what's listed in the FSM

    -- Item/ PART NO/ AC TYPE
    1. spark plug/ 5614235/ 41-902 (GAP .060)
    2. cap/ 1977046/ D338
    3. rotor/ 10498150/ D448
    4. plug wires/ 12073962/ 626B
    It's always fun to go into the parts store and tell them which part # u want to spend your money on.

  7. #6
    Canadian 93 Deville is offline Cadillac Owners Member
    Automobile(s): 1993 sedan Deville
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    Re: Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons

    Thanks Guys!
    I bought all ac delco parts.I will try this weekend .I hope to have everything ready in time for my dads birthday(it's a gift for him) The back plugs look like they are in a tight place. I will look to see if there is a section on removing plugs with what tools are needed. Don't get me wrong. I have built couple of fast carts and I have a high 9 second Buick v6 turbo car. I just don't want to waste time or doing things without a point of attack.

    Thanks for the help.


    Here is a link to some of the cars we run. Couple 6 second pro mods.A street car and other stuff. Enjoy.

    http://www.youtube.com/profile?user=BigMikegn

  8. #7
    Caddyshack100 is offline Cadillac Owners Connoisseur
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    Re: Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons

    I think you are off to a good start, it never hurts to put new plugs etc.. in. Do you have access to a scan tool that has datastream access, with the failure of emissons I think you would also need to look at the o2 sensor. On the datastream it would tell you what that sensor is reading. You should also have a check engine light on because something is out of whack for sure. When you got the results did the tech give you what they thought was problem... I bet they said you would need a new CAT. Good hunting... it may also be worthwhile to check codes and see if something is there, your car is obd1 so there are not many of them compared to later years.

  9. #8
    Canadian 93 Deville is offline Cadillac Owners Member
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    Re: Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons

    Well ,it's all fixed. Passed e test with flying colours! OO and o.1 . I main culprit was the driver on the ecm. New ecm was $200.00 and went to do a emission test and it was perfect. I just wanted to complete the post. (I hate reading posts that never have a outcome to what the original problem was)

    Thanks to all the relpied and gave help.

    Mike

  10. #9
    AMENCADDY's Avatar
    AMENCADDY is offline Cadillac Owners Enthusiast
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    Re: Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons

    Quote Originally Posted by Canadian 93 Deville View Post
    I just wanted to complete the post. (I hate reading posts that never have a outcome to what the original problem was)

    Thanks to all the relpied and gave help.

    Mike
    i thank-you for letting us all know. It's always nice to have a happy ending.

  11. #10
    Caddyshack100 is offline Cadillac Owners Connoisseur
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    Re: Part Numbers Needed for 1993 sedan deville 4.9Failed Emisisons

    Congrats and good for two more years..

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