NeonHomer Posted February 10, 2003 Report Share Posted February 10, 2003 I have been reading about different harnesses that you can build that will let you hook to a GM ALDL connector to monitor the ECM. Has anyone tried using any of these on a 88 Cutlass Supreme?? If so, which one do you use? I've also seen a couple of harnesses you could buy. Does anyone know about `em? Quote Link to comment Share on other sites More sharing options...
TGPilot Posted February 10, 2003 Report Share Posted February 10, 2003 I am not sure the specific application for what you want to use it on, but there are a few links on this webpage for ALDL cable to laptop... 8) http://mwbackus.home.attbi.com/main.htm Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted February 10, 2003 Report Share Posted February 10, 2003 I have a Diacom cable and it works perfectly on an '88-90. Won't work on my '94 though. Quote Link to comment Share on other sites More sharing options...
89Cutlass Posted February 11, 2003 Report Share Posted February 11, 2003 Hey what all can you monitor ? Quote Link to comment Share on other sites More sharing options...
Redfox340 Posted February 11, 2003 Report Share Posted February 11, 2003 GnatGoSplat, That's very interesting; your 1994 won't work? Running an OBDII? Would like to hear more on this project... would like to do this for my 1992 if possible. - RedFox340 Quote Link to comment Share on other sites More sharing options...
NeonHomer Posted February 11, 2003 Author Report Share Posted February 11, 2003 Just out of curiousity, is there any gain from going to a later year PCM/EPROM? I found a few schematics on the net that shows me how to build a harness, so I am going to take a crack at it (I should be able to build one, I am an electronics technician!!) Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted February 11, 2003 Report Share Posted February 11, 2003 GnatGoSplat, That's very interesting; your 1994 won't work? Running an OBDII? Would like to hear more on this project... would like to do this for my 1992 if possible. - RedFox340 The 94 is strange, it's an updated PCM that supports SFI and MAF, but is still the same black metal box as 88-93. I'm thinking it's a similar datastream, just that my version of Diacom is too old to support it. On the 88-90's it shows everything. Stored codes, VSS, Knock Retard, Commanded AFR, RPM, %EGR, %TPS, spark advance, sensor voltages, etc. Too much to type. It also logs and graphs. I'll have to get a screen capture. Quote Link to comment Share on other sites More sharing options...
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