Looking for help from mexico - hard starting
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Cadillac Seville / Cadillac Eldorado Forum Discussion, Looking for help from mexico - hard starting in Past Cadillac Vehicle Discussion; Hey there, first of all I would like to intruduce myself, I'm Abraham and I'm writting you from Mexico, I ...
  1. #1
    ABRAHAMNT is offline Cadillac Owners Member
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    Question Looking for help from mexico - hard starting

    Hey there, first of all I would like to intruduce myself, I'm Abraham and I'm writting you from Mexico, I have a 97 SLS with some codes and unfortunatelly here in Mexico we don't have too much info about this cars and also the mechanics don't know how to repair them. Well I've all ready pull out codes and I have:

    -P0135, P0155 (O2 sensors) I'm not worry about them

    -P1350, P1375 Those are my headache, I know its about ICS, so I took my car to the mechanic he said that I need to buy 1 of the CPK sensors so I did it and the fail continue, the car dont start easy it crancks about 5 or 6 seconds and then run also the tach isn't working, so the mechanic say it's the DIS module so I went to autozone and bought it because even in the dealership couldn't find it. After 6 days
    the mechanic install the DIS module an the fail continue so he said that maybe the camshaft position sensor could be the problem, so I decide to get the car out of there. Also the mechanic told me that he inspected the wires and all of them were ok and all receive signal from the PCM. Thats why I'm asking for help, and also I'm glad with this forum because thanks to the information I've read here before my registration I fixed other codes like the TC1233 and now my ABS and Traction control already works

    I really apreciate the help.

    Greetings from Mexico.

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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: Looking for help from mexico

    Hi !!!! You appear familiar with the car and engine........ The 4 ignition coils sit on top of the ICM - remove them, remove the ICM and check the base for cracking. Clean the coil contacts and ICM contacts. Make sure the ICM ground wire is well connected to the engine. Clean the ICM connectors with electrical contact cleaner or tuner spray. Use this diagram to connect the spark plug wires - click to enlarge - zoom in.

  4. #3
    ABRAHAMNT is offline Cadillac Owners Member
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    Re: Looking for help from mexico

    Quote Originally Posted by Submariner409 View Post
    Hi !!!! You appear familiar with the car and engine........ The 4 ignition coils sit on top of the ICM - remove them, remove the ICM and check the base for cracking. Clean the coil contacts and ICM contacts. Make sure the ICM ground wire is well connected to the engine. Clean the ICM connectors with electrical contact cleaner or tuner spray. Use this diagram to connect the spark plug wires - click to enlarge - zoom in.
    Thanks for the info buddy, well all I know about the Cadillac is because this forum and I know just a little of mechanics, after my job I'll do what you recomend, just a question: the ICM ground wire is the one in the left side of the ICM on the little connector?

    Thanks

  5. #4
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: Looking for help from mexico

    Depends - some have the electrical connector, some have a healthy black wire with ring terminals that connect to the ICM base bolt and an engine ground. A member - N*Caddy - has a '97 - maybe he'll chime in.

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    Mark C's Avatar
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    Re: Looking for help from mexico

    Theres a large number 12 gauge pigtail that connects the ICM to the engine block right behind the power steering pump, if that is missing, corroded or disconnected you will get the codes your mentioning. It's probably not much longer than 4 or 5 inches.

  7. #6
    ABRAHAMNT is offline Cadillac Owners Member
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    Re: Looking for help from mexico

    Ok I'll search that gauge, and now I'm on a bigger trouble the car didn't start yesterday just crancks but nothing else happen, I thought it could be fuel but not, checked the injector's rail and it had gas, so I continue with battery and nothig, try to pull codes and didn't show any codes. Any idea?? This car is driving me crazy!!

    Thnx

  8. #7
    el_dorado_mex's Avatar
    el_dorado_mex is offline Cadillac Owners Fanatic
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    Re: Looking for help from mexico - hard starting

    abraham: i have a 96 eldo and have had the same problems, turned out to be crankshaft sensor(s) and their wiring. thing is that your tach isn't working, most likely because of faulty signals from one or more of the sensors. where are you located? i'm in the northern part of mexico city (mexico state), if you're near i could have a look at it if you want to...

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    ABRAHAMNT is offline Cadillac Owners Member
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    Re: Looking for help from mexico - hard starting

    Quote Originally Posted by el_dorado_mex View Post
    abraham: i have a 96 eldo and have had the same problems, turned out to be crankshaft sensor(s) and their wiring. thing is that your tach isn't working, most likely because of faulty signals from one or more of the sensors. where are you located? i'm in the northern part of mexico city (mexico state), if you're near i could have a look at it if you want to...
    Hi buddy I live in Cuernavaca I usually travel to Mexico city but my car doesn't start any more, I'm wondering if you can help me???? of course I can cover your travel expenses this is my e-mail abrahamnt@hotmail.com

    I really apreciate your help

  10. #9
    el_dorado_mex's Avatar
    el_dorado_mex is offline Cadillac Owners Fanatic
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    Re: Looking for help from mexico - hard starting

    sounds good to me, will send you an email later today.

  11. #10
    el_dorado_mex's Avatar
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    Re: Looking for help from mexico - hard starting

    visited abraham yesterday and had a look at things. left without a 100% conclusion, and therefore i'm curious what you guys think...

    initially things looked like that: upper ckp was connected (new from autozone), lower disconnected. cables from ckp's to icm are ok. so i connected the lower one, no start. played around a bit and turned out that the upper would work connecting it as upper and as lower, and the lower wouldn't work in either position.

    i had a known good ckp with me, ac delco. so i changed the lower one, which hadn't worked at all. connected both ckp's, no start...

    connecting the lower one at either position engine would start, same as the upper. just wouldn't start connecting both. in other words connecting one wherever you like and engine starts, running more or less crappy. connecting both in whatever combination (upper as upper or upper as lower and the lower respectively) and engine wouldn't start.

    now the interesting data is that the ckp from az would give like 2.5 V AC while cranking, while the ac delco one would give like 8.5 V AC. resistance is more or less the same with both, like 1.4 kOhm.

    what do you think, does the icm get nuts if there are 2 somehow different sensors plugged in? or what am i missing here?

  12. #11
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: Looking for help from mexico - hard starting

    Are you using an AZ "Don'tLast" brand CKP sensor? AZ parts are cheap crap and once thrown into the equation, all bets are off.

  13. #12
    el_dorado_mex's Avatar
    el_dorado_mex is offline Cadillac Owners Fanatic
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    Re: Looking for help from mexico - hard starting

    thanks ranger! thinking the same way, just like to get some opinions on this.
    as far as i know the az sensor is "wells", not duralast. so you'd say two new ac delco and things would work? what confuses me is that both actual sensors (new wells and used ac delco) work independently, just not together...

  14. #13
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: Looking for help from mexico - hard starting

    Don't know much about Wells so I can't comment on them. I just replaced mine with A/C Delcos and have not problem. Hard to say why one works, but both don't. It's a long shot, but maybe, just maybe the two different brands don't play well together. That's about the only theory I can come up with.

  15. #14
    el_dorado_mex's Avatar
    el_dorado_mex is offline Cadillac Owners Fanatic
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    Re: Looking for help from mexico - hard starting

    that's what i'm thinking also. fact is they produce different voltages, that's the only hard fact that is there, besides both working individually and cables being ok...

  16. #15
    rodnok01's Avatar
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    Re: Looking for help from mexico - hard starting

    http://lukeskaff.com/?page_id=380
    This article explains the N* sensors and when they are used etc...
    I do believe it uses the same sensor for both so the voltages should be the same.

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