yes I did use the link myburb posted, and then I tried to use it to read 2 other obd1 Chevys,we have sitting around,and I couldn't read any of them(93 5.7 tbi wagon)and a 92 Buick roadmaster 5.7..
I did look them up and got the mask and xdf/adx ect.( I figured it was good practice looking up and changing the definitions.and when it still wouldn't connect no matter what I did.i was about to pull out another old laptop that was running win98 instead of Windows 7....
as I was inspecting the New cable, and thought surely its good, (after all its New) getting ready to hook it to the other laptop and start all over......it hit me to try another cable extension,
and that's when I Finally figured out the no connect problem about 1am. lol
It was the ***#*$*^ Brand New usb extension cable that came with the obd1 plug from moates.
I switched it to a "known good" cable and wahla it said connected
I did use the modified adx file that Myburb sent the link to as well. Thanks Myburb and stew86mcss396
I can read all the sensors and data now. Whew....
I was beginning to think I can't read and follow directions.....lol
if I can't see the problem,I will record a data log and see if someone here could look it over and help me see where the problem lies.
background.......
93 chevy crew cab 2wd 3500 7.4 4l80e with only 23,000 miles!
Its an ex TBI(Tennessee Bureau of Investigations) crime scene truck, that we bought at auction.
When we got it I removed the ambulance box off of it,they had used for investigators,and put an aluminum flat bed on it.....with plans to tow a trailer with 3 Polaris sxs's on it. but hell it barely will pull itself.
Now I know these truck were terrible even when new with 215hp and 340lb ft tq.,
Ive had,and worked on,a bunch of these tbi,peanut head,power houses, so I'm very familiar with how they run, and this one definitely has an issue.
Of course put in a new fuel pump and filter, as it had sat a lot more than it was driven..and that got it running, and runs smooth at idle, and revs fine with no load.
..so I commenced to working on it.
since then I replaced the distributor,coil,cap,wires,plugs,coolant temp sensor and plug, knock sensor that was broken, and A/C comp..
Runs smooth,no CEL/codes,just NO Power.......Runs like its starving for fuel, at WOT it acts exactly like one with a plugged filter, but its not and fuel pressure is right on specs(9-13psi) according to alldata.
I replaced the fuel pressure regulator, spring, and screens.....spray pattern seems steady and fine.
thanks guys for your help and suggestions
I'll update with what I see,don't see, on the test drive
mike454
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