94 Lesabre.. Tried Many Things..nothing is working

[dksob81]

The 94 lesabre do use the OBDII (16 pin) DLC, but either way if the scanner does not get power it cannot retrieve anything.

and autozone does have the scan tool (actron) to retrieve trouble codes for OBDII, but will not help in this situation if the scantool will not connect.

[Rasp]

Sounds to me like you would be stuck going to a GM dealer to get the codes read.

[Blue Bowtie]

That's not the case at all. As I mentioned previously, an MT2500 will access and control the PCM (bi-directional), and they are a lot more prevalent in the service world than Vetronix (Tech or Tech-II) scanners, at about ten times more places than dealerships. I have two (one working), plus cartridges, adapters, keys, and cables, and don't even work professionally (full time) on autos. It's a little like buying a good torque wrench or oscilloscope. If you're serious about working on your vehicles, you need some tools.

I understand (and acknowledged) that a lack of power at Pin 16 might be a problem, and might even require a new fuse to enable the scan (Wow - That might cost an extra 35¢ or more!). With an MT2500, you can depress the internal power (battery) button and at least scan the ALDL for communication.

Further, the Actron tools will not communicate with the 1994-95 GM PCMs that are hybrid OBD (OBD1.5" as they are somethimes called) PCMs and ECMs.

[BNaylor]

Originally Posted by HotZ28

I think the point spinne1 was trying to make here is; the OP has posted seven (7) threads this month, all similar, or related to the same problem. All of these threads/post should be confined to one thread!

http://www.automotiveforums.com/vbul...d.php?t=761425

http://www.automotiveforums.com/vbul...d.php?t=761094

http://www.automotiveforums.com/vbul...d.php?t=759995

http://www.automotiveforums.com/vbul...d.php?t=756700

http://www.automotiveforums.com/vbul...d.php?t=759948

http://www.automotiveforums.com/vbul...d.php?t=759950

http://www.automotiveforums.com/vbul...d.php?t=756499

........

Thread merge.

[dksob81]

Originally Posted by Blue Bowtie

That's not the case at all. As I mentioned previously, an MT2500 will access and control the PCM (bi-directional), and they are a lot more prevalent in the service world than Vetronix (Tech or Tech-II) scanners, at about ten times more places than dealerships. I have two (one working), plus cartridges, adapters, keys, and cables, and don't even work professionally (full time) on autos. It's a little like buying a good torque wrench or oscilloscope. If you're serious about working on your vehicles, you need some tools.

I understand (and acknowledged) that a lack of power at Pin 16 might be a problem, and might even require a new fuse to enable the scan (Wow - That might cost an extra 35¢ or more!). With an MT2500, you can depress the internal power (battery) button and at least scan the ALDL for communication.

Further, the Actron tools will not communicate with the 1994-95 GM PCMs that are hybrid OBD (OBD1.5" as they are somethimes called) PCMs and ECMs.

Well I did not know GM 94 and 95 models were not OBDII, I just know they have the OBDII connector and my SOLUS PRO (SNAPON) uses the OBDII adapter and key 13 to connect to the 94 LeSabre computer, this is why I suspected it to be OBDII.

As he mentioned before he tried to have it scanned but there machine would not connect, I don't know if it was a power problem at the connector or comunication problem with the computer or if it was just a cheap code reading scanner like actron or if it was a diagnostic scanner, like MT2500, techII, Solus, solus pro, modis, mentor, etc.

Just a thought, I would upgrade to the new Solus or Pro, or even the modis. The MT2500 is obsolete, in 2008 Snap-On will no longer be making updates (cartridges) for the MT2500. Although may not affect you since you don't use yours for business.

[Blue Bowtie]

Originally Posted by dksob81

Well I did not know GM 94 and 95 models were not OBDII, I just know they have the OBDII connector and my SOLUS PRO (SNAPON) uses the OBDII adapter and key 13 to connect to the 94 LeSabre computer, this is why I suspected it to be OBDII.

You have to be a little careful with the '94-95 GMs, since some are ALMOST ODB-II. I've encountered them both ways - With a 12-pin and a 16-pin. My '94 Impala has a 12-pin but is not the old ALDL style, so no jumpering will reveal codes. It takes a bi-directional scanner, the right adapter, and the 16-pin types can use either a K-9 or K-13. On the other side, I've worked on some '94-95 trucks that are the old ECM and, and jumpering still flashes the MIL. Of course, the red brick works better for those, too.

For newer (fully OBD-II compliant) systems, I have Auto-Tap for everything through CAN bus systems, but the brick is still faster and easier for all but serious data logging.