Hey, I have a vigilante 2800 lockup converter on my car. The problem is it wont stay locked on the highway. It will lock up at 55mph like it is supposed to.. Then a few minutes later it will come unlocked and stay that way.. Has this happened to anyone? It has been like this since it was put on..

 

hey dana i got your pm but your box is full..

 

Misfires maybe?

I know the LS1s do that, but no clue about the LT1s.

 

So you think misfires would make the converter unlock? I did notice a few random misfires while on the highway with it earlier.. Nothing that I even felt though

 

Like I said, no clue about the LT1s... just the LS1s.

 

Why is it not locking up until 55mph? Did you have it tuned to do this?

 

That is just the speed it supposed to lock up at.. Im pretty sure I had the programmer do 55mph or maybe he just did it.. But I don't even want to drive my car on the highway for fear of burning up the transmission because of this!

 

Why so high with the lock-up, it's not like your cam is that big? Mine still locks up at 42mph with no problems. Anyways, get back to your tuner, maybe he has an answer for you and the problem. Good luck.

 

Im not real sure.. Its an LE1 cam.. Anyway I guess I can give that a try.

 

I just called bryan at pcmforless and he told me it would be caused by miss fires.. That's weird I had no idea it would affect the converter. I only pick up very minimal missfires on the highway but I guess ill go through and check all the wires etc..

 

Ok.

 

Any ideas on why my autotap picks up misfires when im cruising on the highway between 2000-2400 rpms?? I don't feel any miss at all..

 

Is the computer commanding lock-up to stay in? To find out, you'd have to drive the car with a scanner that's capable of pulling data.
Are you getting any codes? Maybe an 1870?
This could also be the converter clutch, or apply piston. We've seen HUGE amounts of Vigilante failures in the past year. Was the converter new when you bought it?

Frank
CPT

 

Yes, I bought this converter new and I bought it about three years ago.. It has been doing this since it was put together.. I am not getting any codes for it or anything like that.. I have autotap I will see if I can log that.