So, my plan for now is set everything down to a tolerable 5800rpm and see if my Tranny is happier. Hoping I didn?t do any damage with the 10 or so 6400-6500 rpm 2-3 shifts.
The last 2 or 3 of...
Type: Posts; User: wlwarnke
So, my plan for now is set everything down to a tolerable 5800rpm and see if my Tranny is happier. Hoping I didn?t do any damage with the 10 or so 6400-6500 rpm 2-3 shifts.
The last 2 or 3 of...
Both show up a question mark.
Running 35? tires (actually 34 or 34.5). Scanned MPH is accurate.
For now, I?ll retune and lower all shifts to 5800 or 6000 and see how it likes it.
Once I finish some house projects, I?ll...
I?ll rig up a gauge I can watch while driving.
When I rebuilt it originally, I used a new plate that was noticeably thicker than the one I removed. I believe it was also transgo along with a...
Capsule was replaced. No vac testing done. Just basic air checks.
This morning it def seemed to not want to shift above 6k. Had to let off to let it shift.
Not promising feeling.
So, go...
I fought Gen3 ETC issues for a bit on my swap. Found a bad connector at the TB, replaced it with a new connector and new pins from ICT. Seemed fixed for a few days, then again. Would only act up...
Thanks so much for the info!
Boxed kit. Was a Transgo 4L60SK or something along this line. Plate was drilled per instructions.
I set the 3/4 clearance at the low end of the tolerance but don?t...
Looking at the 2-3 shift that occurred at 7:19.361.
From 3rd commanded to seeing rpm start to drop took 880ms
From rpm starting to drop to rpm starting to rise again took 340ms.
That's 1.220...
I don?t feel like the ?desired shift time? is used for anything unless you have adaptives enabled and I don?t see that enable option in my 2003 tune.
When you said the log showed 1.255s for the...
This was a longer drive with some more data and using HPT to command some shifts.
It seems like there is a fairly consistent delay of 850ms or so, which doesn't sound like a lot actually, but when...
For the 2-3 Shift, A solenoid is already off, and B turns off.
What gets me the most is the TM not reducing the timing at the time of the solenoid changing state, instead you see TM when the...
Just recently, after an engine swap (L31 with 411 pcm to 5.3 with green/blue pcm) my 4L60e has started acting up. Specifically, the 2-3 shift seems delayed. It's not slipping, flaring, or anything...
Haha!
Checking everything seems to have got it done!
Maybe got it!
Started measuring from batteries (dual batteries on my truck) positive to random places comparing voltage drop.
Started with engine off, then with engine running.
Damn...
Just test ran with a shielded twisted pair, yes, only shielded on one end.
Still got P1518 a few times.
Putting that back, and moving on to something else. May run a dedicated ground just to...
This evening I?ll swap out the 2 UART wires for a twisted pair. Outside the loom, completely separate.
Any idea if the factory UART is ran with UTP?
Measured voltage drop both directions. Nothing at 2 decimal places on my fluke. By nothing, I mean ?maybe? 0.01v.
Is cross talk a thing? I pretty much always have my laptop running. Maybe...
No I haven?t, I don?t have one but I used this same make and model pedal on a friends swap with no issues.
Yesterday was drizzly at home so super humid. May be something, may not, but the fault...
I did this on my 411 pcm before the Ls swap.
Ignore the wire colors as that?s what I used on my truck.
I believe analog cycling means sensor. So you?d want serial cycling. I?d have to look back...
Refer to ?Intermittent Conditions? on page 2. Where is that?
I?ve read through this bulletin as it comes up on just about every search for P1518 diagnosis.
Harps heavily on power and grounds.
At least 5 minutes. 😬
According to the GM diagrams, this is a UART signal and it doesn?t sound like UART need shielding or twisting according to a few websites on the subject of communication protocols. The length is also...
Did not drive it yesterday but let it idle in the driveway while watching AC pressure and Fans and snugging down trans coolant and heater hoses.
Got the P1518 upon initial startup but didn?t come...
I feel like it's getting harder and harder to find people who are actually knowledgeable, and good at their job. Not to mention thorough.
I'm on the Controls and Instrumentation side of things,...
Good idea on the twisted pair. This aftermarket harness does not have twisted pair for speed sensors or com links. I thought about that briefly, but figured there would be way more posts on people...