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Originally Posted by j cAT
so you have a OBD1 scan tool ?
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What, you've never seen a real, live scan tool for OBD1?
Quote:
Originally Posted by j cAT
so you can chart out O2 sensor voltages / fuel trims/ map/ and timing on a OBD1 Gm vehicle ?
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Yes, I have an OBD 1 (and 2) Scan tool. What do you think cars got diagnosed with when OBD 1 was new? Mind you, I'm not sure what you mean by "chart out" O2 voltage, etc. There is no chart or graphing function on most OBD-1 scan tools. There is a simple digital readout of current conditions, and some have the ability to datalog for
short periods of time. My tool does do rudimentary graphing, but most similar tools won't. The data available to an OBD-1 scan tool is dependent on the computer; I have a fairly-extensive list of data parameters on my '92 Lumina, less on my '88 K1500, and things are fairly prehistoric on the '81--85 computers--but ECT, O2, MAP, TPS, fuel trim, knock-sensor/timing retard...yeah, all that and more is available. Holy crap, you're making me feel old. I haven't dicked with a pre-'86 computer since at least 1990..
Quote:
Originally Posted by j cAT
what is the tools model number ?
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Snap-On MTG2500. Extremely similar to this photo of an MT2500 that I sold a couple of years ago. As alluded to, the "G" in MTG signifies the graphing function. An MT2500 with pre-1999 software goes for about $250 on eBay, maybe less. People wonder why I keep harping on the advantage of "used" PROFESSIONAL-GRADE scan tools in preference to "new" consumer-grade code-readers.
OBD 2 adapter, plus a fistful of OBD 1 adapters.
I'm gonna have to take a photo of the OBD 1 software screen and upload. With luck, I'll have a chance to do that in a couple of hours. Gotta fix the damn taillights on my K1500 first. How can a light bulb kick my ass so thoroughly?
Any decent professional-grade scan tool will do OBD-1, if the tool's software allows, and if you have the appropriate vehicle interface adapter.