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idle is fine with A/C on but jumpy when its off?

This is a discussion on idle is fine with A/C on but jumpy when its off? within the General Help forums, part of the LSx Technical Help Section category; reading the thread for the first time and I have to ask...will spark plugs effect idle? ref post 7-9. I ...

  1. #21
    Spaz is My Mentor SMWS6TA's Avatar
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    reading the thread for the first time and I have to ask...will spark plugs effect idle? ref post 7-9.

    I have the NGK TR55.

  2. #22
    Senior Member JayTA98's Avatar
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    i think it can make the car jumpy if they are not gapped correctly.

  3. #23
    Senior Member JayTA98's Avatar
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    Quote Originally Posted by 0rion View Post
    did you upgrade to the 99+ sensors and harness or just replace the 98's? The 98 sensors are fairly retarded really....way more sensitive than the 99+.
    yes, i upgraded to 99+ KS and KS harness.

  4. #24
    Senior Member JayTA98's Avatar
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    i think im going to save some money and maybe take it to a tuner. I might take a trip to tampatunning since I dont know no local tuners. I wanna make sure is not tune related. I might do headers before I do the tune check.

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    Junior Member White99ta's Avatar
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    Turn the idle up on the screw under throttle cable and see if it still does it.

  6. #26
    Senior Member JayTA98's Avatar
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    Quote Originally Posted by White99ta View Post
    Turn the idle up on the screw under throttle cable and see if it still does it.
    It doesnt change too much is less jumpy but is still happens.

  7. #27
    Senior Member JayTA98's Avatar
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    ok so I havae been noticing this. The idle is alot better. If I start the car without the ac on and then turn it on the idle is way better than starting the car with the ac on prior to start the car.
    Here are the pics of the TR 55's that i pulled out. They got replaced with ac delco iridiums.

    #1

    #2

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    #8


    I think they look pretty normal.
    Attached Images Attached Images
    Last edited by JayTA98; 07-27-2011 at 02:06 PM.

  8. #28
    Spaz is My Mentor SMWS6TA's Avatar
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    jay, how many miles on those plugs?

  9. #29
    Senior Member JayTA98's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    jay, how many miles on those plugs?
    I just looked at my notes and compare the odometer and they are 12k old.

  10. #30
    Spaz is My Mentor SMWS6TA's Avatar
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    I see more wear on the drivers side (odd) of the cylinders then on the passenger side (even).

    I guess I mean it looks like the plugs got hotter.

  11. #31
    Senior Member JayTA98's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    I see more wear on the drivers side (odd) of the cylinders then on the passenger side (even).

    I guess I mean it looks like the plugs got hotter.
    is that a bad thing?
    Last edited by JayTA98; 07-27-2011 at 04:03 PM.

  12. #32
    Smiles for 9.5 Years cammed goat's Avatar
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    If I recall, it is a rule of thumb to go with a cooler range spark plug. At least from what I have heard anyway. When I had my old cammed LS1 tuned, I was advised to switch to a cooler heat range plug. So I installed NGK TR55IX plugs.

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    Senior Member JayTA98's Avatar
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    i see. so is the ac delco iridiums good? how can you tell that the plugs were running too hot?

  14. #34
    Smiles for 9.5 Years cammed goat's Avatar
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    I haven't heard much about the Delco Iridiums. I dunno if they are a hotter or colder heat range plug. However, looking in my Haynes manual for my old Beretta GTZ, there is a picture guide reference. Those plugs look like they are "too hot". The electrode is eroded and the insulator is "blistered". Those TR55s you were running, were they just the TR55s or TR55IX?

  15. #35
    Senior Member JayTA98's Avatar
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    Quote Originally Posted by cammed goat View Post
    I haven't heard much about the Delco Iridiums. I dunno if they are a hotter or colder heat range plug. However, looking in my Haynes manual for my old Beretta GTZ, there is a picture guide reference. Those plugs look like they are "too hot". The electrode is eroded and the insulator is "blistered". Those TR55s you were running, were they just the TR55s or TR55IX?
    TR55's

  16. #36
    Smiles for 9.5 Years cammed goat's Avatar
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    TR55s are the hotter plugs. Have you driven the car with the Delcos much?

  17. #37
    Senior Member JayTA98's Avatar
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    Quote Originally Posted by cammed goat View Post
    TR55s are the hotter plugs. Have you driven the car with the Delcos much?
    is DD i think i put like 200 miles since the swap.

  18. #38
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    Any improvements/issues?

  19. #39
    Senior Member JayTA98's Avatar
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    there is improvement but the idle is still kinda jumpy but it is way less. I'll just have to learn to live with it i guess.
    1998 TA 130k A4, LS6 intake, TunedByFrost, Airlid, AIR and EGR delete, Borla exhaust, front Eibach lowering springs, LS6 valley cover, UMI TQ arm, UMI LCA's, UMI panhard bar, Poly engine mounts, BMR relocation brackets, Blistein HD shocks and struts, Oil catch can, Autotrix window fix.

    Now I have an 2001 F150 5.4L

  20. #40
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    Hmmm...almost sounds like a small vacuum leak.

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