|
94 AUTO towing problems
i was towing a buddy's skid loader up a slight hill today and "almost" didnt make it bc the pedal was to the floor and i was only hitting 20 mph. I was monitoring the gauges and the boost was reading 26 lbs, rpm's were around 2,400 and the weird thing was that my egt's were only at 600? the question is... Is it time for a transmission upgrade or am i not getting enough fuel bc my egt's were so low?
|
i would say not enough fuel with egt's that low pulling a skid loader. stock fuel plate= no fuel!!!!! pull the tranny dip stick and see if it smells like burnt toast.
|
Sorry to say it but it sounds like it might be time for a new tranny
|
Originally Posted by lodal cummins
(Post 434623)
i would say not enough fuel with egt's that low pulling a skid loader. stock fuel plate= no fuel!!!!! pull the tranny dip stick and see if it smells like burnt toast.
---AutoMerged DoublePost---
Originally Posted by Shea@L&N Performance
(Post 434680)
Sorry to say it but it sounds like it might be time for a new tranny
|
Your torque converter might be slipping, kinda sounds like what is going on. I would go ahead and get a tc and a valvebody, those should drastically improve your tranny, and if you add alot more power you'll just need to get a heavy duty rebuild kit and maybe a billet input. I just got my tripple disc tc and valvebody from suncoast yesterday for my 97, hope to get it in over the weekend or first of next week so Ill keep you posted on how she holds up. Were going to have a huge sale on Suncoast parts the friday after thanksgiving so if your interested in that, just let me know.:tu:
|
Floored, 20 mph and the tranny fluid isn't burnt to ash. You got a problem here. That truck should have pulled that thing with out even breathin hard and with that description your EGT's should have melted that engine long before you came to a stop.
I don't know anything about the fueling on these 12V trucks but you a fuel problem there. |
Missed the EGT part, that does seem kind of odd. Does sound like a fueling problem.
|
how is 600* gonna melt his engine?
|
Originally Posted by Uncle Bubba
(Post 434985)
Floored, 20 mph and the tranny fluid isn't burnt to ash. You got a problem here. That truck should have pulled that thing with out even breathin hard and with that description your EGT's should have melted that engine long before you came to a stop.
I don't know anything about the fueling on these 12V trucks but you a fuel problem there. |
get a fuel pressure gauge on it
|
Originally Posted by BAD ASS RAM
(Post 435012)
how is 600* gonna melt his engine?
May try the next simple fix, have the injectors pop tested. You may find them blocked up and not passin enough fuel if you've already been through the rest of the fueling system. I know my local Bosh service center will test em for free here. |
Ok I've pondered this one enough, It's gotta be a fuel delivery problem.
If it were the tranny your fluid would be ash long ago and the EGT's still would have been through the roof. 12V doesn't have all the electronic sensors so that knocks that stuff out. If your motor was worn out or the piston rigs were sloppy bad enough to create this serious of an issue then your truck would be covered in Blow by oil, your oil dipstick would probably be blown out of the hole, burnin though oil and you would be smokin up a storm. If you were gettin fuel to the cylinders your EGT's would have been twice that long before you rolled to a stop. So that only leaves the following in order. 1. The fuel tank pick up is clogged or cracked and sucking air. 2. Your fuel lines are old and cracked pulling air in. 3. You already changed the filter, make sure the water drain is closed tight. 4. Your lift pump is not workin. 5. Your Injector Pump is not workin. 6. The Injectors are bad or clogged up and just returning fuel to the tank through the overflow. Problems is fixed now right.:argh::argh: |
Originally Posted by Uncle Bubba
(Post 435189)
Ok I've pondered this one enough, It's gotta be a fuel delivery problem.
If it were the tranny your fluid would be ash long ago and the EGT's still would have been through the roof. 12V doesn't have all the electronic sensors so that knocks that stuff out. If your motor was worn out or the piston rigs were sloppy bad enough to create this serious of an issue then your truck would be covered in Blow by oil, your oil dipstick would probably be blown out of the hole, burnin though oil and you would be smokin up a storm. If you were gettin fuel to the cylinders your EGT's would have been twice that long before you rolled to a stop. So that only leaves the following in order. 1. The fuel tank pick up is clogged or cracked and sucking air. this would require dropping the tank correct? 2. Your fuel lines are old and cracked pulling air in. 3. You already changed the filter, make sure the water drain is closed tight. What would this have to do with it not getting fuel? the water drain is leaking slightly but I think thats the original sensor? 4. Your lift pump is not workin. Replaced 2 months ago 5. Your Injector Pump is not workin. Rebuilt just over a year ago 6. The Injectors are bad or clogged up and just returning fuel to the tank through the overflow. any way for me to clean them? Problems is fixed now right.:argh::argh: |
1. Yep. But if you've never done it, it's time to check it for sludge anyway. Your truck should be pretty similar to mine so here's an easy to follow guide for doing this.
https://www.dieselbombers.com/24-val...-easy-way.html 3. Just guessin that it may be possible that under vacuum pressure of your pumps suckin fuel through that this valve could let air flow in through this fitting. 4/5 This makes this a slimmer possibility but still a possibility. Pressure gauge would help out a lot here. 6. You can clean them but not nearly as well as a shop with a sonic cleaner. They also really need to be pop tested also and only a shop is gonna be able to do this right. They could be spotless to look at them but not flowing fuel at all if one or more of them is bad. |
thanks bubba. I will keep you updated as i go through each step.
|
one more thing for you to check,the last time i messed with my fuel plate when i tightened it back up it was slightly crooked.this kept the foot to travel foreward,i loosened the bolts up shifted it slightly and problem fixed,i didn't notice it when i first took off up the road,when i got down on the pedal though i did,no power and egt's didnt get over like 800*,i had been pushing 1600* before that.just a thought.
|
Originally Posted by BAD ASS RAM
(Post 435576)
one more thing for you to check,the last time i messed with my fuel plate when i tightened it back up it was slightly crooked.this kept the foot to travel foreward,i loosened the bolts up shifted it slightly and problem fixed,i didn't notice it when i first took off up the road,when i got down on the pedal though i did,no power and egt's didnt get over like 800*,i had been pushing 1600* before that.just a thought.
|
no problem,i always learn the hard way.i hope anytime i share info that i save somebody from the same.
|
update
replaced the "water in fuel" sensor to eliminate a possible air leak but to no avail. Also ordered remaned injectors which will be here in a day or two. hopefully this solves the fuel problem. |
alright it sounds like your on the right track but still something doesnt seem quite right to me.
Im deffinetly with you on the fuel issue but you said it was at about 2400 rpm and it wasn't pulling worth a crap and egt's were low. Now im not a cummins guy but if the motor's running at 2400, it should be getting good fuel no?? im not doubting you guys im just really interested :pca1: |
Originally Posted by DieselDanBoy
(Post 437720)
alright it sounds like your on the right track but still something doesnt seem quite right to me.
Im deffinetly with you on the fuel issue but you said it was at about 2400 rpm and it wasn't pulling worth a crap and egt's were low. Now im not a cummins guy but if the motor's running at 2400, it should be getting good fuel no?? im not doubting you guys im just really interested :pca1: |
A fuel plate won't help with the defueling. That is controlled by the govenor. You'll need a GSK kit.
|
Originally Posted by jstizy
(Post 434562)
the boost was reading 26 lbs, rpm's were around 2,400 and the weird thing was that my egt's were only at 600?
|
My 12v will get up to 2400 no problem but the fuel pressure drops to almost nothing, well below 10psi on my gauge. So yes it has fuel but not necessarily enough fuel.
Put a fuel gauge on it, I was amazed my truck was still running when I saw what the psi was.
Originally Posted by DieselDanBoy
(Post 437720)
Now im not a cummins guy but if the motor's running at 2400, it should be getting good fuel no?? im not doubting you guys im just really interested :pca1:
|
sounds like a tranny problem because he said it was at about 2400 rpms and only going 20 mph, the engine might not have had the power but it was turning enough rpms. and if the engine has no load on it then its not goona have a whole lot of heat in it. sounds to me like the torque converter is toast. either that or the valve body didnt let it shift to the next gear so it could go on. jmo
|
Then shouldn't it have cooked the tranny fluid.
|
smell the tranny fluid to see if it smells like burnt toast, then pull the tranny pan and see how much debris is in the bottom. with those rpms and only going 20mph that fluid should be a stinking bad!!!!!!!!!
|
The combination of very low EGT's and he said the tranny fluid is still fine is why I said it's gotta be fueling issues.
|
Originally Posted by 12.valve.hauler
(Post 439655)
sounds like a tranny problem because he said it was at about 2400 rpms and only going 20 mph, the engine might not have had the power but it was turning enough rpms. and if the engine has no load on it then its not goona have a whole lot of heat in it. sounds to me like the torque converter is toast. either that or the valve body didnt let it shift to the next gear so it could go on. jmo
|
reply
about your 12v with no power pulling i would do a built trans i went the cheap route at first and broke my imput shaft but i now have a full builet trans with all three shafts converter and valve body flex plate and lock up controler the lock up is the big deal because the early years have a gruonding issue and wont lock up thats what mine was doing and before it you could not pull anything but it gets pricey for a good trans
|
My stock 95 wouldnt do much better than this, you would have felt the trans slipping if it was the problem, its fuel, get rid of that stock fuel plate, add in a 4k spring kit. Do you run any fuel additive? I bought my 94 and have been running amsoil concentrate in it since my first tank of fuel and noticed major improvement in the truck withen the first two months, this stuff will clean out your injectors.
|
when the truck was at 2400 rpms, did the engine speed keep coming down/ lack of power?
|
how does it pull on flat ground? :humm:
|
Due to the holidays coming up and hunting season i haven't been able to get a good look at whats going on with her yet. One thing that i did notice was when the TC was locked up in the higher gears it would have tons of power? i'm beginning to thing that the something is going on in the TC or valve body? I do have a new set of injectors waiting to be put on also so maybe that will help out a bit.
|
i would deff say its a torque converter now, the turbine inside's probably toast, the only way its functioning is during lockup when the stator locks the impeller to the turbine inside the TC :tu:
|
| All times are GMT -5. The time now is 08:23 PM. |
© 2024 MH Sub I, LLC dba Internet Brands