Datastream

[curtie94]

Hi im just curious if it is possible to datastream from a obd1 ecu to a pc. I want to see how my car runs on paper.

[ThePhoenix82]

http://lmgtfy.com/?q=obd1+to+pc

[deevergote]

http://lmgtfy.com/?q=obd1+to+pc

Take a week off. I'm sick of this shit.




You can datalog from a modified ECU, I know that. I don't know if a stock ECU is equipped to do it, though I've never checked. I have a Moates Hulog that will let me plug my chipped P28 into a USB port to work with various datalogging software.

[curtie94]

Alright all that moates hulog does is send the signal, correct? I was looking online and I saw some schimatics to make your own, but it all involed GM. The two pin connector on our cars, what are the wires? Is one a signal and one a ground, or is it power and ground?

[deevergote]

I'm honestly not sure, and I don't feel like digging in my car to pull it out in the dark... but as far as I know, it's a pretty simple device.

[curtie94]

all right. Really the only reason why I wanted to use a datastream was to check for a missfire. Because I have tried pretty much everything and still cant get it resolved.

If anyone wants to shoot ideas I appreciate it. What I've done is changed plugs, wires, cap, rotor, valve cover gasket, fuel filter, cleaned fitv and iacv. Changed coolant. Really everything I could think of. It is worst at idle with accesories on. When I rev it up just a little bit the miss subsides. The car shakes so bad at idle it shakes the steering wheel.

[GhostAccord]

Try doing a compression test....

If you pull out your new spark plugs what do they look like?

Tan, White or black dry or wet?

Spark plugs can tell you a lot about the health of an engines combustion process. Even if they have only been in there for a day. Some drag racers read and install new plugs after each run. They can usually diagnose any fuel or timing issues from them.

[curtie94]

The plugs look healthy. A tan color. One thing that I noticed that might be causing the problem is I have oil on the threads of the plugs, some more then others. I don't know if it is grounding it of something.

[GhostAccord]

Plugs are already grounded, and motor oil is not the best conductor of electricity anyway. If the oil was on the firing tips. I would say that is your issue.


I would try a compression test and maybe a leak down test if you haven't already done one.
Also, have you ever tested the resistance of your ignition coil? Don't just replace it, test it first.

[oyajicool]

How about fuel injectors? Send them out for bench check and clean.

Also, check and adjust valve clearance.

[deevergote]

Also, be sure the plugs are installed properly, and your threads aren't damaged. My engine started knocking terribly one day, and it was due to the #1 plug getting pushed up in the hole. The threads in my head are damaged (my own stupid fault... overtorqued trying to "index" the plugs) and it allowed the plug to be pushed out.

If you have oil in your threads, you may have caked-on gunk preventing your plug from being screwed all the way down. That would cause an issue, no doubt.

That's REALLY reaching. The suggestions above are more likely... but given my own experience, I figured I'd mention it.

[cloudasc]

Hi im just curious if it is possible to datastream from a obd1 ecu to a pc. I want to see how my car runs on paper.

Yes it is possible to datastream/datalog from obd1 ecu's. Now if you have a stock f22ax, running a pt3/pt6, your best bet would be either:

Doctronic's HondaComm (doctronic.at)
Or maybe aquiring a Hondalog/Hulog and trying the stock datalogger routine in Freelog. (one of my friends is trying to figure this out, but has had no success)