Thread: Help me ID if this is a trans slip or not

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  1. #1 Help me ID if this is a trans slip or not 
    SE Level Member rell2005's Avatar
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    I have notice over the past month or so, I'll be driving normally, not even fast. Where I'll feel what Im not sure is a slip or not. I'll be as detailed as possible. Lets say I'm doing 70mph on cruise control. I'll give it just a lil bit of gas to pass another car, no more than 5-10% throttle most days. At 70mph im usually at 2400-2500 rpms cruising and its jump a few hundred rpms for a sec and feel a slip or a small "thud", but then continue to accelerate normally. I look at my scan-gauge to see that i'll be at 20-30% throttle when this will happen. This is only at around 70 mph. Also this isn't every time, it is very inconsistent. Other than that, the car drives fine and typically shifts nice and smooth. From 0-75 mph at 30-40 % throttle she'll shift fine all the way through. Just a lil background, in February, I had a new 4th gear clutch shaft installed. Has driven fine since. Since I don't know exactly what it is, I've been rather gentle with the car so I don't cause more damage or speed up whats already going bad. I'd guess its a trans issue, but I figured i'd get some other opinions too.
    Top-Swapped GT, SLP headers, 3.2 Pulley, Stage 2 Intercooler
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  2. #2 Re: Help me ID if this is a trans slip or not 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    It might just be the torque converter unlocking.

    SMGPFC Member #1
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  3. #3 Re: Help me ID if this is a trans slip or not 
    SE Level Member rell2005's Avatar
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    Quote Originally Posted by Fivefingerdeathpunch View Post
    It might just be the torque converter unlocking.
    huh...I didn't even consider that...good point. Eventually Im going to have a buddy of mine scan it, bud he's a couple hours away
    Top-Swapped GT, SLP headers, 3.2 Pulley, Stage 2 Intercooler
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  4. #4 Re: Help me ID if this is a trans slip or not 
    GTP Level Member lsxftw's Avatar
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    Quote Originally Posted by Fivefingerdeathpunch View Post
    It might just be the torque converter unlocking.
    Agreed


    Ive been medicating with burnouts and alcohol
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  5. #5 Re: Help me ID if this is a trans slip or not 
    SE Level Member rell2005's Avatar
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    Quote Originally Posted by lsxftw View Post
    Agreed
    Would there be a code I could ID this by?
    Top-Swapped GT, SLP headers, 3.2 Pulley, Stage 2 Intercooler
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  6. #6 Re: Help me ID if this is a trans slip or not 
    Turbo is the way to go. BillBoost37's Avatar
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    No code for a torque converter...it normally locks and unlocks based on what you do to the pedals.

    Easy way to check if it's the TC. Drive normally w/o cruise. RPM should settle in after a moment or two. Lightly touch the brake pedal with your left foot while keeping your right foot steady on the throttle. Just enough to make the brake light come one (the pcm see's that switch open). Your rpm should raise slightly when you do this.. this is the TC unlocking. Once you let off the brake, the rpm should settle back down, aka TC relocking.

    This is normal operation. The TC is programmed to lock/unlock based on events.
    You let off throttle - Unlock
    You add X % throttle - unlock
    You touch the brakes - unlock
    You cruise fairly consistenly - lock
    You reach x speed, throttle % and X load - lock
    I drink..so consider that when reading my posts.

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