Tech II --- worth it to read OBDI real time data?
 

Folks,
I'd like to be able to read real time data from my 95 SC 2, both for now and in the future. It's OBDI.

In terms of communicating with as many modules as possible, performing service functions, accessing the GM PIDs as well as OBDI PIDs, and reading all available real time data, is a Tech II or knockoff my best bet, or is there SW out there for windows or Android that can perform above mentioned tasks?

My reasonably sparse usage regarding number of vehicles would seem to prohibit the purchase of anything like a snap-on.

I would have to get and OBD1/aldl adapter cable for whatever I use.

Thx

I have now idea, I have my red brick Snapon scanner that works up to 2002. I bought a code reader w/ data for the newer stuff. I have all the obd1 adaptors and data on the early stuff is pretty limited. I was able to set the idle speed air motor on my 95 454 tbi with the old Modis at work, that is the only reason I keep it at the shop.

Need the special software to read it.

Legit Tech IIs tend to be pretty expensive from what I've seen, and I've heard the knockoffs are flaky. It would be your best bet (the legit one) however.
The older models of well-known scan tools can probably do just as good a job. I have a Mac Tools branded Vetronix Mastertech that can handle both OBDI and OBDII given the proper cables and software. These were all sold seperately, so pay attention to what the tool comes with.

Thanks.

Not sure about the Tech II, but the Actron CP9690 AKA Bosch 1300 (literally the same tool except blue) I find really handy with pre-1995 OBD1 vehicles. I use mine on a late 1980s GM van, it gives me the live data from the MAP sensor, coolant temp sensor, IAC and voltage and a few other things. I understand it really depends on the car and the computer that they put into the model at the time. Check the thorough review this gentlemen does for the CP9690:


Seems like they don't make the Actron anymore (Bosch 1300 still available?) but I'd keep an eye out for a used one or maybe from a surplus or overstock shop.

Thank you. I will chase down a 1300 then.
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It appears I will not as I cannot find either the 1300 or the actron 9690.

I have an old actron cp9145 that I coveted the entire time my neighbor owned it. He gave it to me as a gift when I moved after 17 years. Problem is, it keeps requesting to be hooked up to power, which makes no sense because it clearly runs off internal batteries in order to light the screen, pin 1 on my OBD1 connector on the car reads 12 volts and pin 2 is in fact ground.

Behaves the same whether I plug it into a wall outlet or use it on its own. I've disassembled it looking for obvious electrical issues but I am yet to find one. I have both the OBD2 and OBD1 cables. Pisses me off. At one point in time I had read live data off my '95 SC2 using that very scanner. I was surprised to see any available on the net when I searched after not finding the 1300. I think it's inexpensive enough to take a shot at.

Hey derf, would this work for you?

Actually, that may be how the reader was designed to work. OBD2 readers can use vehicle power directly from the OBD2 port, but for whatever reason the Bosch/Actron OBD1 readers come with an additional 12v cigarette lighter plug that you have to use. My Bosch 1300 won't work without it on my OBD1 van, even though the reader itself operates on it's own internal battery power. If you have a 12v cigarette lighter plug, make sure to use it with the code reader.

Also, yeah it seems that Bosch has discontinued the Actron unfortunately, although I saw stock of it still available here in Canada last time I went to Princess Auto. I'll check again next time I'm there. To read OBD1 via a laptop, you'll need an ALDL to USB cable and software like Tunerpro.
OBD Diagnostics
https://www.tunerpro.net/