winaldl

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george88gta

Active Member
This may not be the correct section for this post, but it is the closest. I did a search on winaldl and didnt get any hits. Here is the issue. I finally got winaldl to run. I had a defective ALDL connector, it was giving my AutoXray scanner a fit. Replaced it and now scanner works fine. I reconfigured winaldl and now I get the data stream working fine. So now I have lots of data and what do I do with it? Is there a document, or website, that I can go to to help interpret the data?
 
I have the books from AutoXray and they give ranges, no specific data. What I was looking for was someone who uses winaldl and can interpret the data. E.G. the rpm surges from 975 to 1050, but the IAC is at "0". What other data should I be checking?
 
let me look thru my records and ILL post if I can find that, IM sure that will help everyone
Ive got a AUTOXRAY 6000 also so I probably have some of the info in the shop
 
george88gta said:
I have the books from AutoXray and they give ranges, no specific data. What I was looking for was someone who uses winaldl and can interpret the data. E.G. the rpm surges from 975 to 1050, but the IAC is at "0". What other data should I be checking?
Click to expand...
Learned something today. The USB cable for winaldl has provisions for jumpering a 10k resistor between contacts A and B on the ALDL connector. This puts the ECM in winaldl mode and allows it to transfer data. Downside is that it bumps the idle up to 1000 rpm. You can also short A and B together with this jumper and put the ECM in diagnostic mode. If you remove the jumper completely, this model ECM will not transfer data.
 
george88gta said:
george88gta said:
I have the books from AutoXray and they give ranges, no specific data. What I was looking for was someone who uses winaldl and can interpret the data. E.G. the rpm surges from 975 to 1050, but the IAC is at "0". What other data should I be checking?
Click to expand...
Learned something today. The USB cable for winaldl has provisions for jumpering a 10k resistor between contacts A and B on the ALDL connector. This puts the ECM in winaldl mode and allows it to transfer data. Downside is that it bumps the idle up to 1000 rpm. You can also short A and B together with this jumper and put the ECM in diagnostic mode. If you remove the jumper completely, this model ECM will not transfer data.
Click to expand...
Had some time today so I got back in to this a bit. The IAC at "0" was the clue. The IAC number needs to be higher so that it can control the idle. I had the min idle set too high, so the IAC valve was completely closed and not allowing the IAC to control the idle. I did the min idle adjustment and brought the base idle down to 550 rpm. Reattached everything, cleared the trouble codes and went for a ride. The high idle, when slowing down to a stop is gone. At a full stop, the idle drops right down to 800 rpm and the car idles rather smoothly. Shifting is much better as well. IAC is now around 20 counts, not too bad. One thing that concerns me is that MAF is supposed to be around 7 grams, mine is 10.48 to 11.0. Wonder if this is a result of the 52mm throttle body and the SLP runners as well as the vortec heads. Bottom line, the winaldl program is pretty neat ( especially since it is free) and seeing a whole array of data on one screen is very helpful. I have an AutoXray scanner, but you have to page thru the data and some of us old guys cant remember the info from a previous page. I also obtained the two books that Paul had recommended and they had some very helpful info. One is "TPI Fuel Injection Swappers Guide", the other one is in the shop, I will post the title tomorrow. Just proves the point that you cant do much with these cars with the old tried and true "seat of the pants" approach. Guess the message here is that if you dont have a dyno/tuner close by, you really should invest in some data gathering tools and some good documentation.
 
Here is a list of the documentation I used. GM shop manual, very important. It shows you the test/adjustment procedures that are to be followed, I found it to be more specific than the aftermarket "how to" books. The shop manual is a "must have" for finding component locations on the vehicle and detailed trouble shooting techniques. Next book is "How to tune Chevrolet Fuel Injection", written by Ben Watson. This book has very good descriptions as to what the readings should be and what to look for if the readings are not correct. Last book is "Chevy TPI Fuel Injection Swappers Guide" written by Jihn Baechtel. I ound this to be more general in nature, but does have useful info. You will also need a scanner or tech tool to help with adjustments and the winaldl program presents a nice display , on your PC, of the data.
 
Ive got all those books and your 100% correct about needing BOTH
the factory shop manual
and
"How to tune Chevrolet Fuel Injection", written by Ben Watson
 
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