Hi everyone.

I'm hoping someone can answer this, because my research is bupkiss.

I have a 1999 XK8 convertible. I have used my older OBDII bluetooth adapter and a brand new OBDII bluetooth adapter in my cat, but neither can talk to my ECU.

What protocol do I need for my OBDII adapter(s) to have to communicate with my ECU? Worked great on my '98 Lincoln Mark VIII LSC.

They both connect just fine to my smartphone (using Torque) but both give errors saying they cannot communicate with my ECU, and I cannot find definitive tech data to sufficiently identify what protocol the ECU uses.

Thanks in advance!

 

protocol 9141.

 

ISO 9141! Thank you very much!

 

Hi RJ237, I am using Torque Pro and the only ISO 9141 choice available to select is ISO 9141-2 (5binit, 10.4k baud), will that work?

Thanks alot
Sid

 

Sorry, but my technical expertise was stretched to the limit just getting my Ultragauge to function.

 

I have the Torque Pro app. In the settings, it uses Automatic-Thorough protocol scan. I am using a PLX bluetooth device.

 

My Torque Pro app links right up to the ELM 327 bluetooth converter without manual intervention . . . but . . . I have 3 other converters in the junk box that do not work. The Chinese knock offs are famous for being DOA or shortly there after. The eBay vendors will give your money back instantly as this is a well known problem.

 

I use ELM 327 bluetooth with my Torque app also. Only issue I had was the first time I had trouble getting the blue tooth to see the adapter. Once it was connected I have never had issue.

 

Yes, it should.

Some of the elm327s are clones and don't work, though. You need engine running or ignition II.

 

Genuine ELM327s with good software are able to search for the correct protocol on any OBDII compliant vehicle.
With USB connected ELM devices it is possible to control the chip directly from a simple terminal program thereby bypassing the supplied program.
This would allow you to check if the chip (only) is searching and using the corrrect protocol.
I don't know if a modified technique is possible with a Bluetooth device though.
Whether or not the Chinese junk is a mirror image of a genuine ELM device or a botched homebrew version I don't know - any ideas from others?

 

I'm in the same boat with 3 BT adapters that don't work on my 99 XK8.

Can anyone recommend one they have that works?

There seems to be no way to tell via the web which one FOR CERTAIN is a true ELM v1.5 compliant adapter.

I saw a specific recommendation but AmazonUK won't ship to the US.

 

After reading all posts about bad ELM adapters , I spent the extra money to get the PLX KIWI adapter. Never had a problem with it.

 

The thing is, when I get to the price point of around $45 for a Kiwi PLX to use as an ELM BT device I start to wonder if I might not be better off with a Launch X431 Creader V+ for around $35.

Thanks alot, much appreciated...

 

If they don't do live data, don't get it, my 2c.

 

Thanks for the info!

I looked at the KIWI PLX, but had a couple concerns.

1st, a 3' cord? Why? The OBDII port is big enough to hold on of the larger BT adapters. That means I have to tie it up in such a way that won't get caught by my feet. I have some significant mobility issues.

2nd, it has a button I have to press to turn it on?

 

The on/off feature is a positive to people that like to leave the scanner in their car for live monitoring while they're driving

The on/off button allows them to not have to remove and replace the scanner to turn it off or on everyday, so they just leave it plugged in all the time and turn it on before getting on the road then turn it off when leaving the vehicle

It's a matter of convenience and less wear on the connector.

 

As far as the 3' cord goes, I hang it over the steering column. You could put it in the sunglasses compartment.

I like the on/off feature.