GenBiltstein
Member
- Messages
- 59
- Reaction score
- 99
Carry on
-
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97 4L80E dropping out of TC lock up
- Thread starter mannebk
- Start date
GenBiltstein
Member
- Messages
- 59
- Reaction score
- 99
Carry on
GenBiltstein
Member
- Messages
- 59
- Reaction score
- 99
Welcome to my world.
that's why i now get my self an external pig tail, hook it up, and do my due diligence next.
then i have a clear understanding if the funny behavior comes from inside or outside of the transmission housing. then we move from there.
firing the parts cannon (a full rebuild is nothing else), honestly, every idiot can do that. and because of a lot of idiots doing exactly that, they also get it mostly wrong and mostly introduce more problems than there were in the first place.
its a routine best avoided. with the proverbial one exception. if the cause is a know issue to an established and reproducible problem and the diagnostic work is way more expensive than the part and labor to replace it. that's the only reason one should actually shoot the spare part (minus the s in parts) gun. and if that doesn't fix it, your back to actually doing the diagnostic work for real this time.
and just to be precise, you can actually go from Prudhoe Bay Alaska to Key West Floriada and drive 5503 miles in an almost straight line, but it would include a real sizable chunk of Miles driven outside of the US in Canada.... like about a 1/3 of it.
MrMarty51
Well-Known Member
an ECM from a 2000 K3500, 4L80E will not work on Your MH ?
I have the stock unit from my truck that I’m saving in case I would ever change my truck back to the GM8 turbo.
If that would work I would mail that to You if You would send it back after the test and diagnosis is complete.
I have the stock unit from my truck that I’m saving in case I would ever change my truck back to the GM8 turbo.
If that would work I would mail that to You if You would send it back after the test and diagnosis is complete.
it probably would. if yours doesn't have a TCM or TCCM (Transmission Control module or transfer case control modul. but then your controling transmission and engine so its not an ecm engine control module but a pcm a powertrain control module)
but going though the Canadian borde today, i confirmed something. when it its neutralizing in 4th, its actually in somethin similar to 1st. or 2nd and then 1st. but free wheeling when the engine is slower as the vehicle
so i think a broken 1/2 valve spring is fitting that the best.
see the link posted above to the LS place.
all in that's now confirmed the overall best fitting description of my issue.
i think i just drop the pan and pull the 1/2 valve and have a look
but going though the Canadian borde today, i confirmed something. when it its neutralizing in 4th, its actually in somethin similar to 1st. or 2nd and then 1st. but free wheeling when the engine is slower as the vehicle
so i think a broken 1/2 valve spring is fitting that the best.
see the link posted above to the LS place.
all in that's now confirmed the overall best fitting description of my issue.
i think i just drop the pan and pull the 1/2 valve and have a look
but if my approach does crapp out, meaning my conclusion was wrong, wouldn't be the first, will for sure eure not be the last time, and/or my then performed pigtail testing will confirm outside of transmission case as reasons for acting up, i would like to come back to your very kind offer. if it then stilk stands, and your obviously welcome to mark your property and tell me what i ow in shipping so i can compensate you when shipping it back.
what actually happened is this.
usually i had those issues going down the interstate at 55+ mph... it dropes out of 4th, revs up to 5k untill i stop it by switching it to 3rd.
this time i was just doing 40 when it slipped into 4th while OD was selected. but my first gear usually is a downshift at 35 mph and leads to a bit over 4k rpm of revs... so 40 mph was not at rev limiter jet. close but not at 5k, i think i saw 4800 or so in my ultra gauge.
so it happened the first time, that it slipped out of 4th and revved up towards limiter at 5k but hit the 1st at 4700-4800 foret and actually started to push the car in 1st.
i there for conclude the broken spring in the 1/2 shift spool theory to be confirmed.
and now we know how to test for it too.
very carefully accelerate in OD untill it shifts into 4th, and then let it rev up towards limiter and watch for 1st to engage when engine overtakes the 1st gear st given speed.
i was able to reproduce that at any given try.
not every tim it fell strisg6into 1st, sometimes it was more like second for a few seconds, then it came back to 1st.
sorry for not being mor detailed earlier, i was staying with friends. and still the details of my discovery had to sink in and make sense.
now 3 bottles of wine later i hope I do make sens in my explanations?
does that make any sense to you? am i right about my conclusion about that spring?
sorry, too much wine, cant think straight in 2 languages anymore
good n8 every one
usually i had those issues going down the interstate at 55+ mph... it dropes out of 4th, revs up to 5k untill i stop it by switching it to 3rd.
this time i was just doing 40 when it slipped into 4th while OD was selected. but my first gear usually is a downshift at 35 mph and leads to a bit over 4k rpm of revs... so 40 mph was not at rev limiter jet. close but not at 5k, i think i saw 4800 or so in my ultra gauge.
so it happened the first time, that it slipped out of 4th and revved up towards limiter at 5k but hit the 1st at 4700-4800 foret and actually started to push the car in 1st.
i there for conclude the broken spring in the 1/2 shift spool theory to be confirmed.
and now we know how to test for it too.
very carefully accelerate in OD untill it shifts into 4th, and then let it rev up towards limiter and watch for 1st to engage when engine overtakes the 1st gear st given speed.
i was able to reproduce that at any given try.
not every tim it fell strisg6into 1st, sometimes it was more like second for a few seconds, then it came back to 1st.
sorry for not being mor detailed earlier, i was staying with friends. and still the details of my discovery had to sink in and make sense.
now 3 bottles of wine later i hope I do make sens in my explanations?
does that make any sense to you? am i right about my conclusion about that spring?
sorry, too much wine, cant think straight in 2 languages anymore
good n8 every one
Last edited:
MrMarty51
Well-Known Member
I fully understood the language, I came from such a clan that speeeks the same langhaush adz thait.
So yeah, we know where we is coming frum.
So yeah, we know where we is coming frum.
Will L.
Well-Known Member
Which fuel line?
If rubber- get sae30r9 or greater. This is critical because the older fuel line doesn’t withstand the ethanol & methanol in modern fuel. They deteriorate from the inside out.
If this is what has happened- stop using the rig until you have replaced 100% of the fuel lines. You may have to drop the fuel tank to do this.
If rubber- get sae30r9 or greater. This is critical because the older fuel line doesn’t withstand the ethanol & methanol in modern fuel. They deteriorate from the inside out.
If this is what has happened- stop using the rig until you have replaced 100% of the fuel lines. You may have to drop the fuel tank to do this.
MrMarty51
Well-Known Member
If one fuel hose is so terrible then the rest of them are right behind.
MOST ! Parts stores do not have the 30R9 hose.
If when requesting such hose and You get the doe deer in the headlights look, ask them to bring You the roll, inspect the numbers on the roll, chances are it will be 30R4.
I had to order the 39R9 and I got that through AMAZON.
There was one brand I did not care much for, made in China, company called evil or some such.
The other sizes I purchased was all made in USA, or at least it is printed as such.
MOST ! Parts stores do not have the 30R9 hose.
If when requesting such hose and You get the doe deer in the headlights look, ask them to bring You the roll, inspect the numbers on the roll, chances are it will be 30R4.
I had to order the 39R9 and I got that through AMAZON.
There was one brand I did not care much for, made in China, company called evil or some such.
The other sizes I purchased was all made in USA, or at least it is printed as such.
MrMarty51
Well-Known Member
If You need to have the unit on the road then, if it were mine, I’d install what hose is available while waiting for the proper hose to arrive at Your home destination.
jrsavoie
Recruit
Do you have a link to the made in the USA stuff?
dbrannon79
I'm getting there!
most Napa's or a local farm equipment parts places should have that hose in stock. again you'd probably need to see and look at the numbers on the hose to be sure, but your chances are better at those places.
what do you make of this?
dont see a vid, then its still uploading
dont see a vid, then its still uploading
dbrannon79
I'm getting there!
Must not have come though.what do you make of this?
dont see a vid, then its still uploading
having issues with roaming and data upload
of course rhat fix almost certainly cant work
but what do you make out of my tank hook up....
anything standard?
i need to lowe that 90 gal tank, of cours its 95% full, when else that would die.
of course rhat fix almost certainly cant work
but what do you make out of my tank hook up....
anything standard?
i need to lowe that 90 gal tank, of cours its 95% full, when else that would die.
