Only 12 quarts after rebuild 4l80.. stalling
08-24-2017, 07:40 AM
#1
Only 12 quarts after rebuild 4l80.. stalling Hey guys I have a freshly rebuild 4l80 with a 10.5 yank converter pro truck series with 3600 stall.. 373 gears and 228r cam
For transmission cooler im using the radiator plus a remote cooler that's under the truck ... I'm also using a 4l80 lokard dip stick ..
everywhere I've read it says that it should take close to 16 quarts for a fresh rebuild .... I put a quart in the converter and 12 quarts on the tranny and it reads way pass full ..
.. so I remove about a quart and now it reads in between hot and cold in the dip stick.... I'm having issues with stalling only when it goes into reverse .... in not sure if the tranny fluid could be my issue .. but do you think 12 quarts is not enough? I would of though it needs more because of the secondary cooler under the car .
If also only driven the car about 4 miles not passing 20mph haven't really driven in the highway and gone thru all the gears .. just a lot of idle do to tuning.
For transmission cooler im using the radiator plus a remote cooler that's under the truck ... I'm also using a 4l80 lokard dip stick ..
everywhere I've read it says that it should take close to 16 quarts for a fresh rebuild .... I put a quart in the converter and 12 quarts on the tranny and it reads way pass full ..
.. so I remove about a quart and now it reads in between hot and cold in the dip stick.... I'm having issues with stalling only when it goes into reverse .... in not sure if the tranny fluid could be my issue .. but do you think 12 quarts is not enough? I would of though it needs more because of the secondary cooler under the car .
If also only driven the car about 4 miles not passing 20mph haven't really driven in the highway and gone thru all the gears .. just a lot of idle do to tuning.
08-24-2017, 08:08 AM
#3
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I wouldn't drive it anymore as you might be low on fluid.
Your converter is smaller then stock I "think" so the amount of fluid would be less also then with a stock converter.
Your converter is smaller then stock I "think" so the amount of fluid would be less also then with a stock converter.
08-24-2017, 02:12 PM
#6
Factory spec dry and with a stock converter GM spect. 13.5,
7.7 with pan rem., usually close to 12 +/- depending on converter size.
80E's like to be full, so you really need an accurate stick.
Stalling could be tune, IAC, I think rev has higher pressure, so a little more pull on the engine maybe?
7.7 with pan rem., usually close to 12 +/- depending on converter size.
80E's like to be full, so you really need an accurate stick.
Stalling could be tune, IAC, I think rev has higher pressure, so a little more pull on the engine maybe?
08-24-2017, 09:34 PM
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Factory spec dry and with a stock converter GM spect. 13.5,
7.7 with pan rem., usually close to 12 +/- depending on converter size.
80E's like to be full, so you really need an accurate stick.
Stalling could be tune, IAC, I think rev has higher pressure, so a little more pull on the engine maybe?
7.7 with pan rem., usually close to 12 +/- depending on converter size.
80E's like to be full, so you really need an accurate stick.
Stalling could be tune, IAC, I think rev has higher pressure, so a little more pull on the engine maybe?
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08-24-2017, 10:42 PM
#12
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The factory control is different than a Compu-Shift, No pressure offset just for L,2,R......But there is a "Master" offset value that everyone & their dog likes to mess with.
90 PSI is the stock value in HP-Tuners, If it's set higher than that, Change it to 90.
Earlier versions of HP-Tuners let you set this value pretty high (seen high as 130), The latest versions limit you to 96.
90 PSI is the stock value in HP-Tuners, If it's set higher than that, Change it to 90.
Earlier versions of HP-Tuners let you set this value pretty high (seen high as 130), The latest versions limit you to 96.
08-24-2017, 11:34 PM
#13
I know you know how to check the fluid level but it's happened enough that I have to ask anyway... Did you have it running when you checked the level?
My experience is that the 4l80e with stock converter/pan/cooler holds about 14qts most of the time.
You're also running a smaller diameter converter so that may make a difference also.
I installed a Lokar stick on a 4l80e in a Nova and filled it according to the level on the stick and haven't had any issues since.
My experience is that the 4l80e with stock converter/pan/cooler holds about 14qts most of the time.
You're also running a smaller diameter converter so that may make a difference also.
I installed a Lokar stick on a 4l80e in a Nova and filled it according to the level on the stick and haven't had any issues since.
08-25-2017, 06:36 AM
#14
Here are some boost pressure readings I took a few years back when I had built an 80E with the HD-3 man kit with a mod kit installed-I think I owe
wht/73 these reading also, lol
These are @ 1200 RPM
W/O mod hooked up, and with mod hooked up (lower readings hooked up)
P-165/105
R-170/150
N-165/105
D-60/55
3-95/85
2-100/90
1-95/80
wht/73 these reading also, lol
These are @ 1200 RPM
W/O mod hooked up, and with mod hooked up (lower readings hooked up)
P-165/105
R-170/150
N-165/105
D-60/55
3-95/85
2-100/90
1-95/80
08-25-2017, 07:40 AM
#16
I never checked the pressure when I had the Compushift, wished I had-actually the new Compushift controller has a pressure sensor you can add in the pressure port. In talking to Mike (Comp.) I pretty much got the imp. pressures would be lower, wide open full pressure. It can control the force motor, so it has the ability to control. Its like a vac. mod only elect controlled.
08-25-2017, 07:55 AM
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I never checked the pressure when I had the Compushift, wished I had-actually the new Compushift controller has a pressure sensor you can add in the pressure port. In talking to Mike (Comp.) I pretty much got the imp. pressures would be lower, wide open full pressure. It can control the force motor, so it has the ability to control. Its like a vac. mod only elect controlled.
With boost pressure at 11% which Mike said is stock in gm's programming It was like I let out the clutch and would do 20mph in reverse OR stall if it was cold.
Now it's way better with clines recommendation to lower it to 0.
One thing is My FI was use to the tiny 8" treemaster so dropping it in rev wasn't an issue but the 80's larger converter it needs to learn again too.