MT2500 Demo on 1990 5.7L TBI

studigggs · Jan 20, 2022

I see a lot of posts regarding which scan tool to buy, and I'd just like to post some videos of a snap-on mt2500 interfacing with my 1990 K1500 5.7L to help guide those decsions. Besides data the PIDs, one of the biggest benefits of the snap-on scanners is the troubleshooter. For a beginner, the 'Fast Track Data Scan" will tell you what the values of each PID should be and what to test for if they are off. The videos below go through some of the menus, but if you are a beginner, in my opinion you can't beat the self-contained information in one of these old things. With the BT scanners and TunerPro etc, sure you can get the data PIDS and nice graphs, but this information without the explanation and guidance is often overwhelming. I only had the Engine troubleshooter loaded, but you can get the same troubleshooting info for ABS and Transmission with the proper cartridge. BTW, this scanner will be listed for sale soon, so keep a watch on the buy-and-sell forum.

Video 1

Video 1

Schurkey · Jan 20, 2022

I did essentially the same using individual photos, with an MTG2500 connected to an '88 K1500.

www.automotiveforums.com/vbulletin/showthread.php?t=1146067

94 k2500 no low end power and horrible fuel mileage - Automotive Forums .com Car Chat

94 k2500 no low end power and horrible fuel mileage C/K

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Posts 14 and 15.

The '2500 series is an entirely useful tool, but long obsolete. I replaced mine with a Solus Pro, two generations newer--and also long obsolete.

The only thing my MTG2500 didn't do, that I actually cared about, was that it would not perform an automated ABS brake bleed on my '97 K2500. It would auto-bleed my 2003 Trailblazer, but not my older pickup. I could get ABS codes, ABS data, but no auto brake bleed on the '97.

The MTG2500 has the capacity to show graphs for any two sensors, but is otherwise identical to the MT2500. The MT2500 doesn't graph at all. Newer scan tools can show more graphs at a time on their larger displays.

2JCrispy · Oct 30, 2022

Hey guys, thanks so much for all the info on this scanner/diagnostic tool!

I am looking into picking up a MT2500 to troubleshoot and diagnose some issues on my 1990 K2500. Do you know if there anything specific I need to look for when buying an MT2500 so it will work with my truck? Is there a certain chip/key and/or adapter I will need?

Also, I would be interested in using this for my uncle's 1991 Corvette if he ever needs it, that should be doable right? If so, do you know if there is a certain chip/key and/or adapter I may need?

Schurkey · Oct 31, 2022

There are three GM OBD-1 connectors for the Snap-On tools.

I think GM-1 is the most-common, 12-pin version, GM-2 is the 5-pin version for the oldest OBD vehicles, and GM-3 is for certain ABS functions on SOME vehicles. There's some '94--'95 vehicles that use an OBD-2 connector, (and maybe a specialized "Personality Key) but not the full OBD-2 protocols.

Both of the vehicles you've listed would use the GM-1. I don't know if the Corvette would need the GM-3 or not. My '92 and/or '93 Luminas do; and that's the only application I know of for sure.

If you have the proper OBD-1 connector, and the software bundle that supports the vehicle--new enough, and compatible with the manufacturer, you're set. Snappy released a heap of cartridges with the software; individual makes--GM, or Ford, or Chrysler, or Toyota. More-common are the "Domestic" (GM, plus Ford, plus Chryser, plus Jeep) and "Asian" (Toyota, Datsun/Nissan, with some or many others depending on how new the cartridge is.) "European" software is somewhat rare and expensive.

Each manufacturer has at least one propriatary OBD-1 connector. So you buy a heap of connectors if you're doing work on lots of different brands of cars/trucks.

Snappy ended support for the MT/MTG2500 in 2009, so the newest software available for them would cover vehicles made up to 2008. (Version 9.2, or maybe 9.4, I suppose.) I've never seen software that new for the '2500 series. '96-2003 is real common; '80 1/2--'99 is real common. I had the '80--'99 and the '96--'05 cartridges; which was fine with me because I don't own anything newer than '03.

User_name · Nov 2, 2022

I WANT FIRST CHANCE TO BUY IT!!

MT2500 Demo on 1990 5.7L TBI

studigggs

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Schurkey

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94 k2500 no low end power and horrible fuel mileage - Automotive Forums .com Car Chat

2JCrispy

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Schurkey

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