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What the H**L?

This is a discussion on What the H**L? within the General Help forums, part of the LSx Technical Help Section category; 1997 Cam/Exh LT1. Mid RPM miss/Stutter Now riddle me this... Changed OPTI, ICM, IGN COIL, OPTI Harness.... No change. Changed ...

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    Bone it like you own it FORD RECOVERY EXPERT's Avatar
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    What the H**L?

    1997 Cam/Exh LT1.

    Mid RPM miss/Stutter

    Now riddle me this...
    Changed OPTI, ICM, IGN COIL, OPTI Harness....
    No change. Changed 2 Plugs and wires...

    FIXED! for 2 miles or so...

    Hmm. Changed 1 more plug and wire...

    FIXED AGAIN! for a couple miles again...

    Changed the rest of them...

    FIXED.... Yep you guessed it... a couple miles later, stumbling again...

  2. #2
    O U 8 1 2 Spaz's Avatar
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    check the opti for coolant spilling out on it... isn't the water pump above the opti as well???

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    Exalted Cyclops 67CamaroRSSS's Avatar
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    2002 Z28 A4 NBM
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    DAMN you Opti!!!!!!!

    Replace with Delteq or similar...

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    autoconnectionllc.com 02transamce's Avatar
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    Ahhh the joys of the lt1.
    Good Luck
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    Smiles for 9.5 Years cammed goat's Avatar
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    Have you checked the gap on the plugs you didn't change? Did you check your coolant temp sensor?

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    Bone it like you own it FORD RECOVERY EXPERT's Avatar
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    Quote Originally Posted by FORD RECOVERY EXPERT View Post
    Quote Originally Posted by Spaz View Post
    check the opti for coolant spilling out on it... isn't the water pump above the opti as well???
    Quote Originally Posted by 67CamaroRSSS View Post
    DAMN you Opti!!!!!!!

    Replace with Delteq or similar...

    Changed OPTI, ICM, IGN COIL, OPTI Harness....
    No change.
    Quote Originally Posted by cammed goat View Post
    Have you checked the gap on the plugs you didn't change? Did you check your coolant temp sensor?
    Gap is good. just replaced them.... But I replaced 1 at a time, and each one fixed the problem... For a few miles......

    Temp sensor is reading on scanner
    Last edited by FORD RECOVERY EXPERT; 06-21-2011 at 03:52 PM.

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    Smiles for 9.5 Years cammed goat's Avatar
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    MAF? Clean that yet?

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    MAF is reading in the 130's-140's under throttle.

    Gonna swap it with my brothers and see what it reads

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    Smiles for 9.5 Years cammed goat's Avatar
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    OK.

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    another MAF, reading close to the same... Left O2 was reading lean, now getting P0134 (Left O2 ckt no activity).... Only code so far....

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    Exalted Cyclops 67CamaroRSSS's Avatar
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    2002 Z28 A4 NBM
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    Now you know why I traded the LT1 for an LS1...

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    Ok, changed o2, still showing P0134... NOW, stopped running completely... Will spin over and hit now and then, but no start... and No Codes (except P0134).... Now its at the Chevy House.... We will see what Tech II says.

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    Smiles for 9.5 Years cammed goat's Avatar
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    Keep us posted.

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    Ok. So round 1 of Tech II said bad IGN COIL, and #5 Plug Wire disconnected......... Sure enough, arching to the head thru the coil body..... Replaced it, Re-attached #5 PW, Fired back up... Still missing, now throwing P0134 & P0135....

    What the H**L? On to round 2? Any Ideas?

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    Senior Member JayTA98's Avatar
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    Quote Originally Posted by FORD RECOVERY EXPERT View Post
    Ok. So round 1 of Tech II said bad IGN COIL, and #5 Plug Wire disconnected......... Sure enough, arching to the head thru the coil body..... Replaced it, Re-attached #5 PW, Fired back up... Still missing, now throwing P0134 & P0135....

    What the H**L? On to round 2? Any Ideas?
    sounds like you have a bad O2 sensor. Driver's side pre cat.

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    Quote Originally Posted by JayTA98 View Post
    sounds like you have a bad O2 sensor. Driver's side pre cat.
    Brand new....

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    Remember, Flashing SES on acceleration...

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    Smiles for 9.5 Years cammed goat's Avatar
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    I assume you checked the passenger side? Have you checked your exhaust for leaks?

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    No leaks, Cammed, Hooker Mids with ORY, No cats.

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    Smiles for 9.5 Years cammed goat's Avatar
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    What O2 sensors were replaced?

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