Hi, my transmission was recently rebuilt but i´m having trouble with the lockup, when i´m crusing around and hit 86 kmh it wan´t lock up like it should, i can lock it manually in HPT. It worked flawless this morning, then i got some DTC´s and the it stopped locking up, when i cleared the code it worked fine again. But now there is no codes but it wan´t lock up. Any ideas ?

 

What were the DTC codes you got...?

Do you have HPT...? Then log the TSTATE flags, some of these will indicate the reason for TCC unlock.

 

MAP P0106
Misfire P0300

Yes i have HPT, what do you mean by TATATE flags ?

Are you talking about these one.

 

p0300 will trigger it to unlock every time...
set the P0300 DTC to 3:no error reported, and leave the SES checked...
that should solve your issue

p0300 is common with anything other than a stock ish cam...
its no big deal.. its basically telling you that valve events are happening at a different spot than expected...

 

No not those ones... there some flags which give the reasons for TCC not being able to be locked.

 

you cant log T-State flags on an Fbody with HPT...
only maybe with a tech 2..

what I said will fix his issue...

 

You might want to figure out why its misfiring instead of just disabling the code.

 

if he has an aftermarket cam, its gonna throw P0300..period...
its not a misfire...
its the pcm seeing a change in rpm from the cam overlap...
and your RPM will never be as steady with an aftermarket cam as it will be with the stock cam....

The ECM uses the crankshaft position sensor and camshaft position sensor to monitor changes in
the crankshaft rotation for each cylinder.
The ECM counts the number of times the engine speed change rate indicates that misfire has occurred. And
when the misfire rate equals or exceeds the count indicating that the engine condition has deteriorated, the
MIL lights up

when its a small variance(like what is caused by an aftermarket cam...) you get P0300

when you get a true misfire, you get a big variance, and it throws the specific individual cylinder misfire code.

 

^ listen to him

 

I guess you have to research the op to get that info. I didn't look at his profile since so many people list their mods or put it in their signature or in the post. Still doesn't mean he's having a problem with the car in his profile.

 

Now i have blocked the code but there is no result, the conv. wan´t lock up ! I can´t see anything wrong with the tune.

 

can you lock it manually in HP Tuners?
If not, then its a transmission issue...possibly a bad lockup pack/solenoid...



also...are you in Speed Density or using the MAF?

 

Hey whats a lock up pack? lol.

 

sorry.. couldnt for the life of me spit out the right words..LOL
sometimes it hard to think right when you are off at rehearsals getting ready for a tour in Europe/Scandanavia/Australia with the New Kids on the Block and the Backstreet Boys...

I was leaning towards a lockup CLUTCH issue....

and I was asking if after removing the P0300 if you could manually lock up the converter or not.....

can you post the file?
also, are you using 2.22 or 2.23 (doesnt make any difference, just need to know which file type) to save as if I see something and edit.

 

also, if your pcm is still throwing a P0106, it wont lock up...
pcm uses the MAP sensor for torque calculations, and when the sensor throws a code it assumes the torque reading will be wrong, so it doesnt allow lockup for self preservation reasons.


if you are still throwing a P0106, then you may either have a faulty MAP sensor, or a burnt or broken wire in the harness..
check MAP in your HPT Scanner to see if it show values that change or if its just showing 10kpa all the time(or any value all the time for that matter.)

 

Yes i can lock it manually in HP Tuners, i have a brand new Circle D converter.

I´m using MAF.

I´m using 2.23, the file is attached below.

No it´s not throwing codes on the MAP yet, i blocked it, maybe thats the reson. But the MAP is working, it goses from 40´s to 80´s in the scanner.

 

Leave the p0106 as its normal default settings or it won't lockup...
There are a few things that cannot be turned off for things to work normally

Setting p0106 back to factory settings should fix the issue,

I'll look at the file later when I get back to the hotel

 

Ok thanks.

I will do that in the morning, what if it´s strarts throwing codes on me again ?

 

if it still throws a p0106, then there is a real issue you need to solve...
and you have to figure out why...
a lot of times it a burnt set of wires and its getting intermittently grounded out from vibrations

 

The misfire code is being thrown because of the stall and that is main reason people tuning a new stall cant get it to lockup. Disabling the code does not disable the PCM from monitoring the misfire events, and, with regard to TC lockup, changes very little other than the MIL. There is a table in HPT where you can increase the misfire threshold. Im on mobile and can't look it up now, but its in the Auto sticky in the tuning section.