I'm borrowing my mech's car scanner, a Snap-on crazy thing... should be fairly easy to figure out.
Does anyone have any settings i should change (fan temps/etc) on a nearly stock Z28?
Also, I'm going to be troubleshooting my low rpm stumble on it, and was wondeing exactly what sensors i should look at. So far I've got MAF, IAT, IAC counts and O2's to look at, am i missing anything? I'd like to just get a large list of everything to go through and check em right down a list if possible.

 

Is the Snap-On OBD-I?

Does it include an adapter to go from OBD-I to the OBD-II ALDL on your 1995?

Is the Snap-On "2-way" capable? Can it "program"? (Most scanners can't)

Have you read my online ScanMaster guide?

 

I use my friends snap-on scanner to troubleshoot my car and I know that they are read only. They can clear codes but can't program as far as I know. They are also adaptable to any cars PCM. They have adapters and plug in modules for different types of cars. Very nice for the mulit car mechanic and very expensive.

 

Does the scanmaster show stored and current DTC codes in the GM format?

 

ScanMaster will read OBD-I stored and active codes, in DTC two-digit format. It does not differentiate between "stored" and "active" and can not clear them.

 

In your opinion is it worth every penny it costs? I think the cost is less than 300 dollars which seems reasonable I guess.

 

The ScanMaster is $250, from T. Byrne or Ramchargers. I really think most of what I learned about the LT1 PCM I learned from watching the ScanMaster. I wouldn't have put the effort I did into the writeup if I didn't think it was worthwhile.

But for OBD-I's you can also look at the $170 AutoXray, or software like FreeScan or TTS DataMaster. There is a lot to be said for being able to get a real time readout on the dash (ScanMaster) and longer term data logging (software). I use both the ScanMaster for in-dash data readings, and the logging capabilities of my MoTeC aftermarket engine management computer.

 

This is the super expensive fella (several 1000-$ for the scanner plus add on's) with two snap in sockets for different types of card. It fits OBD I and OBD II computers, it also can use the OBDII connector for OBD I computers like my car. The things really slick, it reads out all the codes in plain english along with the code #'s. I'm not 100% sure if i can change anything on the computer, but i'll be figuring it out over the weekend, i wouldnt be surprised if it did. I do know it can read all the sensor levels. My mech is lending it partly because my day job's computers and this stuff comes pretty easily to me, i'll probably come back showing him some new things. This guy can clear codes, it does differentiate between stored and active codes as well, i saw it myself the other day and cleared the computer too.

So with all that said, anyone have any idea if i can program using it? And what other "tests" shoudl i perform to get a definate answer to why i'm getting a low rpm stutter (around my TC lockup point).

 

Anyone?

 

There's your answer on the snap-on scanner.