Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

Scan9495: Free OBD1 scan app for 93/94/95 LT1

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Old Sep 1, 2020 | 09:07 PM
  #481  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

Originally Posted by aaax
I have a 1993 Corvette and I wonder if the scanning program works on my car?
It might work somewhat because the engine data is the same for the 93 F-car. HOWEVER, the corvette has a CCM and that usually gets in the way of the scan. Some 94 and 95 y-car owners have had limited success using this program but it is far from prefect. The data is displayed ok but it is very unstable.
Old Sep 2, 2020 | 03:00 AM
  #482  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

Originally Posted by GaryDoug
It might work somewhat because the engine data is the same for the 93 F-car. HOWEVER, the corvette has a CCM and that usually gets in the way of the scan. Some 94 and 95 y-car owners have had limited success using this program but it is far from prefect. The data is displayed ok but it is very unstable.
Thanks for your quick reply Gary!
I do not have sports suspension in my car so then there should be no CCM in the one that is interfering.
Or is a CCM something other than a body control module (CCM / BCM)?
I do not have the car at home so I try to prepare so I have everything ready until I am in the garage.
But it seems to be a bit tricky with programs for 93 LT1 Corvette .
// Stefan
Old Sep 2, 2020 | 09:40 AM
  #483  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

The Corvette CCM is more like a body control module, controlling things like PASS-Key, dash/LED display, horn relay, oil monitor, interior lighting, etc.. The FX3 ride control suspension module is something different.
Old Nov 1, 2020 | 09:30 PM
  #484  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

Thank you so much dude, haven’t tested this in the car yet but successfully got it downloaded on windows 10 lol, so excited for this
Old Nov 4, 2020 | 10:38 AM
  #485  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

I can’t thank you enough for this man, it works just fine, we’ve needed something like this ever since datamaster was shut down
Old Nov 4, 2020 | 10:57 AM
  #486  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

There are still TTS DataMaster files available on the web.

That said, I prefer Scan9495.
Old Nov 4, 2020 | 01:58 PM
  #487  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

oh thanks dude, i didnt know lol, but im surprised, i think my dad had used datamaster years ago and we needed to find a replacement since i saw something about it being shut down or something of the sort, thanks anyways dude.
Old Nov 4, 2020 | 05:12 PM
  #488  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

TTS no longer supports DataMaster.
Old Nov 12, 2020 | 12:55 PM
  #489  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

Hello everyone. First of all i want thank Gary for this awesome tool, it come very handy for my car. I own 94 Chevrolet Corsica 3.1 AT. Week ago i had swapped transmission valve body and my car started to stall while placed in gear. It feels like my torque converter is locked and it keeps happened until car gets warmed up. After it warms transaxle works just fine. So i am trying to find problem and what confuses me is the pressure control solenoid amps actual that show 0.02 while target amps is 4.98 . Could someone please tell me those readings on a normal working transaxle?

Old Nov 12, 2020 | 02:18 PM
  #490  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

I can't help much with the diagnosis. But I want to make clear that you may be the first one to use this program on a non-F-body 93 V6 car transmission. So it is possible the readings are wrong. I think they are probably correct, but you are probably the first one to test it.

I would assume that there is either a blown fuse or an open circuit to that valve solenoid. I suppose it may be that the PCM has turned off that current because of an overload, too much current. Are there any transmission trouble codes?

Last edited by GaryDoug; Nov 12, 2020 at 02:23 PM.
Old Nov 12, 2020 | 02:27 PM
  #491  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

I generally review the LT1 logs, but my focus is on the engine control. I have no knowledge/experience w/ the transmission functions.
Old Nov 12, 2020 | 11:18 PM
  #492  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

I am also using "tuner pro" and "aldl droid" and i can confirm that your program reads everything correct and can control all actuators. There are no trouble codes from transmission, it only says "illegal range" but i am sure its ok. I thought that maybe this solenoid had stuck in semi open state and keeps oil flow to push clutch until the fluid gets hot and it starts to slip allowing to drive car. And i can`t compare readings with my old solenoid because it breaks in half when i tried to disconnect it. Just wanted to know how this reading looks in another transmission so i could decide to order solenoid or not.
Old Nov 12, 2020 | 11:27 PM
  #493  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

Thanks for the feedback. Obviously you know more about this than we do ;-) Sorry we can't help more.
Old Nov 12, 2020 | 11:41 PM
  #494  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

All i need is a screenshot from a transmission tab with engine running. Like one that i posted above.
Old Dec 11, 2020 | 05:26 PM
  #495  
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Re: Scan9495: Free OBD1 scan app for 93/94/95 LT1

Hello @GaryDoug

My OBD1 to 2 adapter came with red, green, white, and black wires not brown black and red. How should I wire my USB to this?


Last edited by Theo96; Dec 11, 2020 at 05:29 PM.



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