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"Check Engine" "Check Transmission" "AT/OIL" Lights
03-03-2014, 08:53 AM
Post: #11
RE: "Check Engine" "Check Transmission" "AT/OIL" Lights
(03-02-2014 10:40 AM)Garner Wrote:  I would like to add a comment for the transmission issue. One of the most common causes of the P0741 code in Asian vehicles is Low Fluid Level. The reason for this is that a lot of them are to be checked in Neutral instead of Park. You wouldn’t think that it would matter, but it makes a big enough difference to cause problems. So I would suggest checking the owners manual for the proper procedure for checking the fluid level. Make sure it is full with the proper fluid. Nothing is Absolute but no further damage SHOULD occur from driving it to the dealer. The torque converter isn’t locking up which usually doesn’t hurt anything except your fuel economy. Here’s a link where you can read about it.

Isuzu P0741

Please let us know what you find out.


Thanks for your re-assurance and assistance. I will let you know how this plays out....Rick
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03-25-2014, 11:20 AM
Post: #12
RE: "Check Engine" "Check Transmission" "AT/OIL" Lights
Follow Up: The car is at a transmission shop still. A rebuilt tranny for this car was not available. I agreed to have the transmission replaced with a used transmission with 60K miles on it. The technician says the it shifts fine and the codes are gone but they cannot get the 4wd to engage. They used my old transfer case for the 4wd, that was working fine 2 days before I brought it into the shop. They think the TCM may be the issue and that they may have mis-wired it and don't know how to get it to work. So basically I now have a 2wd SUV worth $1200 less than a 4wd on a trade in for a new car. I am trying to figure out what would be a fair price to pay them for the "repair" so I can get my car out of there. What would the 60K miles tranny be worth and how many hours labor would it take to take the tranny out and reinstall the used one? I am not willing to pay for the original quoted price that involved a rebuilt fully functional tranny.
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03-25-2014, 11:32 AM
Post: #13
RE: "Check Engine" "Check Transmission" "AT/OIL" Lights
I believe Garner is tied up elsewhere for the moment so I will stick my neck out and suggest there may be a compromise if you word it correctly. (read: calm and collected)

They offered a "fixed" vehicle but were not able to deliver. Perhaps they will discount this repair and have a dealer straighten out the wiring issue and still keep the price under the original quote?

What I am getting at is the transfer case itself is probably not the issue so you still have a 4wd vehicle but not fully functional, which I am sure can be repaired. It's just a matter of working out the details with these folks.

Let us know how it goes.
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03-25-2014, 12:16 PM
Post: #14
RE: "Check Engine" "Check Transmission" "AT/OIL" Lights
(03-25-2014 11:32 AM)Rupe Wrote:  I believe Garner is tied up elsewhere for the moment so I will stick my neck out and suggest there may be a compromise if you word it correctly. (read: calm and collected)

They offered a "fixed" vehicle but were not able to deliver. Perhaps they will discount this repair and have a dealer straighten out the wiring issue and still keep the price under the original quote?

What I am getting at is the transfer case itself is probably not the issue so you still have a 4wd vehicle but not fully functional, which I am sure can be repaired. It's just a matter of working out the details with these folks.

Let us know how it goes.

I agree...just looking for some idea of what the work they have done successfully should cost so I have a baseline idea of where I am trying to end up $$ wise. (Cost of used tranny, shipping, labor hours dedicated to the installation)
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03-25-2014, 03:53 PM
Post: #15
RE: "Check Engine" "Check Transmission" "AT/OIL" Lights
Prices are going to be all over depending on where you live and where the replacement came from. As an example I see the trany itself from $600 to $1600 used, on line. Remanufactured units will run the same spread but higher to start off. Labor (on top of parts) also varies with your location. In my neck of the woods it's close to $100 /hr for shop rate. I suggest you make a few calls locally to see what the deal is near you. Sorry I can't be more specific.
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03-25-2014, 05:27 PM
Post: #16
RE: "Check Engine" "Check Transmission" "AT/OIL" Lights
(03-25-2014 03:53 PM)Rupe Wrote:  Prices are going to be all over depending on where you live and where the replacement came from. As an example I see the trany itself from $600 to $1600 used, on line. Remanufactured units will run the same spread but higher to start off. Labor (on top of parts) also varies with your location. In my neck of the woods it's close to $100 /hr for shop rate. I suggest you make a few calls locally to see what the deal is near you. Sorry I can't be more specific.

Thanks...will do...
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03-27-2014, 09:05 AM
Post: #17
RE: "Check Engine" "Check Transmission" "AT/OIL" Lights
(03-25-2014 11:32 AM)Rupe Wrote:  I believe Garner is tied up elsewhere for the moment so I will stick my neck out and suggest there may be a compromise if you word it correctly. (read: calm and collected)

They offered a "fixed" vehicle but were not able to deliver. Perhaps they will discount this repair and have a dealer straighten out the wiring issue and still keep the price under the original quote?

What I am getting at is the transfer case itself is probably not the issue so you still have a 4wd vehicle but not fully functional, which I am sure can be repaired. It's just a matter of working out the details with these folks.
Let us know how it goes.

The technician says that the TCM may need to be driven for awhile so the transmission and it can work together. If that is not so, they will replace the TCM at no cost to me.
I am skeptical that the driving will make the TCM mesh with tranny. Is there a possibility that the TCM needs to be programmed somehow to the newly installed transmission or should it just plug in and work?
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03-27-2014, 09:58 AM
Post: #18
RE: "Check Engine" "Check Transmission" "AT/OIL" Lights
Not all that familar with this particular vehicle but some do need to be plugged into a special scanner to do what is called "learn mode" where the TCM or ECM is told there is something different (new parts) and it must go through a sequence in the shop so it knows all the changes before being driven. A dealer can answer that question better than myself for the specific model and option.

Now, my best guess is they have already driven it and it's been through a couple of hot / cold cycles so if it hasn't learned something by itself at this point there's probably something wrong.
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03-31-2014, 01:34 AM
Post: #19
RE: "Check Engine" "Check Transmission" "AT/OIL" Lights
(03-27-2014 09:58 AM)Rupe Wrote:  Not all that familar with this particular vehicle but some do need to be plugged into a special scanner to do what is called "learn mode" where the TCM or ECM is told there is something different (new parts) and it must go through a sequence in the shop so it knows all the changes before being driven. A dealer can answer that question better than myself for the specific model and option.

Now, my best guess is they have already driven it and it's been through a couple of hot / cold cycles so if it hasn't learned something by itself at this point there's probably something wrong.

I have read somewhere during my research on this issue that there may be some vacuum tubes that may be cracked or not connected between the tranny & the transfer case that power the engagement of 4wd when it is switched on.
Is this true?
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03-31-2014, 09:47 AM
Post: #20
RE: "Check Engine" "Check Transmission" "AT/OIL" Lights
That may be true. Some vehicles have vacuum controlled actuators and I have spent countless hours sorting out problems on several over the years. Certainly worth a look to see if something was left off or damaged. They do rot, split, and crack, after years of exposure to engine heat.
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