While I am totally at home with Diesels and Carb'ed engines, electronic fuel injection and control is going to be a steep learning curve.

My Corvette is a 1987

I have order the book; "Corvette Fuel Injection and Electronic Engine Control. My ALDL OBD1 Cable arrived today. I have down loaded Tunner Pro RT and have it installed on my Laptop. The OBD1 Cable came with a Cd with 'Free Scan'. Thinking this was going to be easy, I head to the shop. MY ALDL OBD1 Cable is jumped for the 10K ohm resistor between A&B as instructed in the instructions. Power plug for the Serial cable is plugged in my cigarette lighter and I did verify power on a digital voltmeter. I must run the serial cable as my Thinkpad does not have USB ports.

Test 1. With computer executing Free Scan, set to com port 1, key turned to run, dash is lighted, I get nothing. Start engine and still get nothing, dashboard is all at zero.

Test 2. I execute Tuner Pro RT. It now appears I have to down load an additional files like .bin and something else before it will run. Tuner Pro RT was also dead in the water. What additional files do I need to down load from Tuner Pro RT, and where do I put them on my computer.

I know my Computer and serial port are running normal as I use that with my GPS. I also tested the GPS on the serial port (com 1) and it works fine.

Will someone please kick me in the rear and jump start me ? I want to be able to read codes and engine parameters so I can follow in the book I bought and learn this fuel injection and electronic engine control. For the time being, I have no desire to tamper or change the contents of the GM Eprom. Thats much later when I learn what I am doing.

Many Thanks
8Valve

 

Hey Paul, pm your phone number & I can call you when I get home tonite 7-8 pm pacific time. If that's too late, let me know & we'll work something else.

 

Thank You, PM sent.

8Valve

 

I have an 87 vert and have also recently started this journey. I went the more expensive route and just ordered the Moates all in one APU1. I have started doing datalogs using Tunerpro RT and am very impressed with the result.

With my setup I plug my laptop into the APU1 via a usb port. The ALDL cable goes from the APU1 to the car ALCL socket under the drivers side dash.

I cannot follow what you are doing exactly. Where are you plugging the ALDL cable into? What relevance does a serial comms cable have to a 12 supply from your cigarette lighter?

I know there are always many ways to skin a cat. Interested to see how you are doing it. I have some bin files, ads files and xdf files that you need with tunerpro rt. However you may find they are already there.

 

My aldl cable plugs into the OBD1 jack under the drivers hush pad. My older Thinkpad does not have USB ports so I have to use serial port (com 1). This requires that 12 volts is applied to the lighter plug fastened to the rs-232 serial cable. I am still having a few problems understanding everything. But got help last night from a fellow Vette owner which got me on the right path.

8Valve

 

The test socket has 12 pins on it. Just wondering how you interface a 2 wire serial cable to a 12 wire aldl cable!

Maybe only pins A and B are used for the datalogging!

Here is some advice from Mark Mansur to get Tunerpro rt working for datalogging for an 87:

"Load up the proper definition for your vehicle (mask 32, in your case - I think you can get away using either 1227165_6E.ads or 1227165_160baud.ads - start with the 6E one)."

 

The plug comes all wire and with a jumper plug.
Position 1. Normal
Position 2. A shorted to B
Position 3. 10K resistor between A & B
I am going to loose the rest of my hair on this one LOL

8Valve

 

Pin M ( or E on the earlier 160 baud cars ) is the serial data line, returning through A ( ground )
Pin B shorted to ground (A) only puts ECM in diagnostic mode
See
http://www.aldlcable.com/

Yours gets power from USB connection; his serial port setup gets it from cig lighter

 

Go into Tuner Pro Preferences where you set / check the Comms port and tick the " disable checksum " box
See it it communicates after that

 

So it is possible to connect your laptop directly to the ALCL socket and run Tunerpro rt!

The cable I have has an ethernet type termination connection on it that plugs into the APU1! There must be a USB to RS232 serial conversion occurring inside the APU1.

 

Don't try and hook the monitoring up with the ignition on or the engine running. Seems to send it in to limp home mode (evidenced by the fan turning on - amongst other things).

 

No ,you need two hookups.
The ALDL data connection is output only; allows you to see what is happening in engine.
The stock memcal is not reprogrammable without taking it out of the ECM so you can't upload data onto it; unlike the '94+ LT1 PCM which has inbuilt flash memory and can be tuned directly ( with correct software and cable )

 

I meant you can connect direct laptop to alcl and use tunerpro rt if you only want to datalog. If you want to tune then definitely need APU1 and G1 adaptor (or some other interface).