TC Lockup Question?
TC Lockup Question? Well this might sound kinda weird but i dont know what else to think of it. Today i was messing around and i went WOT almost from a dead stop (10mph) and of course i roasted the tires for awhile and then all of a sudden my car hooked and i had no power like my throttle response was gone. I was like WTF i didnt know what to think of it. Then after i thought about it for a little bit the only thing i can think of that happen was i was spinning so much that the converter actually went into lockup. Is this possible, i mean thats exactly what it felt like. Any help would be appreciated.
Sounds like your traction control was active if it is so equipped. No the TCC cannot lock up if you are at WOT, unless reprogrammed. What speeds were you going? What shift (gear) was it in? Could also be that your battery hold-down is not holding your battery in place, and when the car hooked the battery shorted out on the tower supports, killing your power (hp and volts).
I do not have traction control. The car did feel like it bogged down bad but i have never heard of a auto bogging like that. I mean the car felt strong and then all of a sudden it stopped spinning and then it just fell on its face. I think the car shifted into second. I might not have kept the throttle down the whole time i might have let up a little once i started spinning. Why cant the stall lockup? I would think there is no way of it knowing the difference in spinning and actually rolling. Well i dont know. Thanks for the replies.
Car may have went into limp mode. There's a thread around here where something like this happened to someone when he did a burnout. Seems that if the tires spin too long, the cpu puts the tranny into 2nd and you lose power. It won't go back to normal until you restart the car.
As far as lockup, you'll know when the car does it because your rpms will drop instead of slipping to higher rpms. And I know that during WOT, my converter doesn't lock up.
As far as lockup, you'll know when the car does it because your rpms will drop instead of slipping to higher rpms. And I know that during WOT, my converter doesn't lock up.
Originally Posted by Roarin_8
Car may have went into limp mode. There's a thread around here where something like this happened to someone when he did a burnout. Seems that if the tires spin too long, the cpu puts the tranny into 2nd and you lose power. It won't go back to normal until you restart the car.
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That's good to know but like I said, I had read that from a reply when someone had done a burnout for quiet awhile and the car went into limp mode. Maybe he did the burnout in second? I can search for the thread and link it in here.
Originally Posted by rufretic
You wouldn't lose power if it locked up. I would say traction control or it just bogged down real bad.
How wrong you are young grasshopper...If you lockup too early your car will feel like it has lost a lot of power. Try manually locking it up with it in gear at idle, it should stall out! Now, if you tune it, or switch to lock at the top half of the track where the RPMs are great and speed, then you should pick up a little. If your spinning with little load, like he was, then lock it as it shifts into the next higher gear and you get traction, your rpms plummet and the additional load of the TCC locking will make it feel bogged out.
It's either torque management or an upshift.
I've roasted the tires on a fairly powerful vehicle with no TM and it would spin, shift, bog, downshift, spin, shift, bog, downshift....
I suspect your spinning, upshifting, bogging, letting off.
It's not the converter locking up because stock programming will not allow a lock up in second, I doubt you hit third but if you did it would not lock up at a high throttle position.
If it's TM the VCM has recieved a few inputs to put it into TM, that usually just drops timing to -10.
I've roasted the tires on a fairly powerful vehicle with no TM and it would spin, shift, bog, downshift, spin, shift, bog, downshift....
I suspect your spinning, upshifting, bogging, letting off.
It's not the converter locking up because stock programming will not allow a lock up in second, I doubt you hit third but if you did it would not lock up at a high throttle position.
If it's TM the VCM has recieved a few inputs to put it into TM, that usually just drops timing to -10.
Originally Posted by CAT3
How wrong you are young grasshopper...If you lockup too early your car will feel like it has lost a lot of power. Try manually locking it up with it in gear at idle, it should stall out! Now, if you tune it, or switch to lock at the top half of the track where the RPMs are great and speed, then you should pick up a little. If your spinning with little load, like he was, then lock it as it shifts into the next higher gear and you get traction, your rpms plummet and the additional load of the TCC locking will make it feel bogged out.
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This exact same thing happened to me today. Its hard to describe but I did it from a roll. Punched it, the tranny down shifted and then BAM! Car fell flat on its face. I was not a WOT either. It was really strange. I just let off and then went to WOT and the car responded fine. This is the second time its happened to me....
