14 CUX diagnostic computer (cheap) - Defender Source
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View Poll Results: Interest in group buy
I want an ECUMATE! 8 72.73%
I want a cable to roll my own with libcomm14cux 3 27.27%
I have an ECUMATE! 1 9.09%
Multiple Choice Poll. Voters: 11. You may not vote on this poll

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  #1  
Old May 14th, 2012, 08:37 AM
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Jason England
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14 CUX diagnostic computer (cheap)

I've always been frustrated by the diagnostics on the truck - the code reader and also the lack of tools to adequately understand what's going on under the bonnet.

During my latest fight with the TPS I found this device sold by Steve Heath in the UK. 112 called ECUMate.

Basically it reads the ECU directly and gives proper values for the engine temp, throttle position, stepper valve, cats, MAF, idle control etc etc

It doesn't magically tell you what's wrong ... But it does provide insight into what values the ECU is dealing with.

It connects to the white plug near the ECU and provides similar function to the landrover test book computer.

One glitch is that Steve can't export to the US as his insurance doesn't cover him and the device isn't FCC approved. I had to get mine delivered to a relative to send it over. FedEx picked it up on a security scan and I had to file paperwork to get it into the US.

This works on 93/94/95 pre-ODB II trucks.

I discovered that my truck was going into limp home occasionally due to incorrect throttle body adjustment. Limp home does not throw a code on the reader but does result in lower fuel economy ...
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #2  
Old May 14th, 2012, 08:39 AM
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Does this steve fella have a website or something?
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  #3  
Old May 14th, 2012, 08:44 AM
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yep ... https://shengltd.com/catalog/product...roducts_id=275

------ Follow up post added May 14th, 2012 08:48 AM ------

The ECU mate manual is pretty informative ... http://www.shengltd.com/tvrextras/do...st%20draft.pdf
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #4  
Old May 14th, 2012, 09:48 AM
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Get the f### out of here. I am so getting one. Carry on anyone, lol.
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  #5  
Old May 14th, 2012, 09:56 AM
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I know this means nothing now, but I actually meant to call you yesterday to swing by. I had to bring the dog back from NJ, and wanted to swing by to say hi, drop off your thermo, and check this out, but Canal Street was an absolute mess at 4, so I just decided to take my normal route back out.
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  #6  
Old May 14th, 2012, 10:52 AM
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Quote:
Originally Posted by airbornrover View Post
Get the f### out of here. I am so getting one. Carry on anyone, lol.
if you are in the city ... you are welcome to try mine

------ Follow up post added May 14th, 2012 10:54 AM ------

Quote:
Originally Posted by rijosho View Post
I know this means nothing now, but I actually meant to call you yesterday to swing by. I had to bring the dog back from NJ, and wanted to swing by to say hi, drop off your thermo, and check this out, but Canal Street was an absolute mess at 4, so I just decided to take my normal route back out.
I could have also seen your truck ... bottom line is that plugging this in may tell you about faults you don't know exists ... are you sure you want to open pandora's box?
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  #7  
Old May 14th, 2012, 11:14 PM
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There maybe enough interest on this and other forums (rangerovers.net, landroversonly.com, Pirate, etc.) to get a group purchase large enough to make it worthwhile for Steve to get insurance.
I'd want to buy one but not be the ramrod to push the group buy.
Maybe someone else?
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  #8  
Old May 14th, 2012, 11:28 PM
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I don't think there would be enough interest to cover the insurance premium we chatted about. Best option would be do a bulk purchase delivered to someone in the UK who then shipped them over. Only problem there is if a box full of non-FCC approved electronics gets picked up like mine did it may be tricky to get customs to release them.

I did consider asking to license the technology and build them here ...
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #9  
Old May 14th, 2012, 11:57 PM
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at that price I would get one as well, most recent I have been pondering the acquisition of a hawkeye...
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  #10  
Old May 15th, 2012, 10:06 AM
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20 bucks and a lap top

http://alum.wpi.edu/~colinb/14cux.html

that guy should take donations.
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  #11  
Old May 15th, 2012, 11:54 AM
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Quote:
Originally Posted by robertf View Post
20 bucks and a lap top

http://alum.wpi.edu/~colinb/14cux.html

that guy should take donations.
I looked at that option .. it's not as conveinient as ECUMate but you can't knock the value!!

The other option would be to get this guy to compile a version of his API for the Arduino platform and make a handheld or a built in diagnostic screen for permenant mounting in the truck.

I thought about these options but in the end it was easier just to buy the ECUMate
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #12  
Old May 15th, 2012, 12:05 PM
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no need for an api, he posted the entire protocol and address locations.

bluetooth to microcontroller for a phone interface is very possible.
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  #13  
Old May 15th, 2012, 12:17 PM
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Unless you want to write your own handler you still need to compile the libcomm14cux libary to be able to access and decode the data in the address locations ... and then create an interface to navigate and display the data. The nice thing about Arduino is that it supports C++ and the non-standard baud rate for the 14CUX serial link.

Bottom line is that this could be built on about any platform ... question is does anyone have the time to take on such a project?
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #14  
Old May 15th, 2012, 07:34 PM
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i've got a guy in Seattle who does apps.

we've been toying with different ideas; assume price point around the PC based option?
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Old May 15th, 2012, 08:35 PM
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Quote:
Originally Posted by texrover View Post
i've got a guy in Seattle who does apps.

we've been toying with different ideas; assume price point around the PC based option?
app should be free, only charge for the hardware, especially since someone has already donated all the leg work.



Its a really simple circuit, basically a repeater to convert the nonstandard bit rate to a bluetooth compatable speed and let the phone/laptop do all the comm work. A few years ago I threw one together for a management system very similar to 14cux (GM 1227747 ECM), worked great but I lost interest and it never made it off the breadboard.
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Old May 15th, 2012, 11:19 PM
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TTL-232R-5V available for $20 plus a 5-way 3mm TTS for a few dollars and five mins with a soldering iron.

Then download the free software and done.

I guess someone could make up the cables ...
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #17  
Old May 16th, 2012, 12:01 AM
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Quote:
Originally Posted by robertf View Post
app should be free, only charge for the hardware, especially since someone has already donated all the leg work.



Its a really simple circuit, basically a repeater to convert the nonstandard bit rate to a bluetooth compatable speed and let the phone/laptop do all the comm work. A few years ago I threw one together for a management system very similar to 14cux (GM 1227747 ECM), worked great but I lost interest and it never made it off the breadboard.
I'll check his capacity for "free"
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  #18  
Old May 16th, 2012, 12:43 AM
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This thread went way over my head... Lets set up a group buy with someone who is already going to be headed across and back. They can just pack a suitcase full of them. I want one.
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  #19  
Old May 16th, 2012, 12:44 AM
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Jason let me borrow it and it is a great little device. Shows all your values for almost every input into keeping the truck running perfect. Also the PDF write up goes in-depth on much more than you would think about each sensor.
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  #20  
Old May 16th, 2012, 10:27 AM
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Charles Galpin
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I added a poll to see if there is interest in either path. I think either is an awesome idea, but I'd prefer integrating it with an onboard computer over a hand held reader. I bet this will help me determine why i get crap fuel economy.

I'd consider making up some cables if there was interest, but I suspect after buying the TTL-232R-5V , 5-way 3mm TTS plug, 400 ohm resistor, and shipping fees both ways, it's going to be closer to $35/40 each so I wouldn't choose this option because of the cost.
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