Datamaster woes
06-19-2014, 09:59 PM
#21
Race Director
I've been messing with datamaster to help shed some insight into why my 94 has been running so rough. I've got no codes, so I figured datamaster would be a useful tool to take a peak at what the engine is actually doing.
I come with some seeming anomalies:
1. I lose sync with the PCM every 5 or so seconds. It just can't keep a constant, stable connection.
2. When first starting the car it shows my knock counts at 1500. That's simply not right.
I'll post a few screen caps of my different data runs to see the weirdness I'm experiencing.
I come with some seeming anomalies:
1. I lose sync with the PCM every 5 or so seconds. It just can't keep a constant, stable connection.
2. When first starting the car it shows my knock counts at 1500. That's simply not right.
I'll post a few screen caps of my different data runs to see the weirdness I'm experiencing.
Ive been round and round with datam.asters tech support on this no luck.
Now, datamaster v3.51 (no longer supported, or can you buy it from them anymore) works fine on my windows xp laptop.
#2 is normal. you get knock counts when starting a car
06-19-2014, 10:45 PM
#25
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06-19-2014, 10:48 PM
#26
Instructor
Member Since: Nov 2010
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Not sure what order you are doing everything in but I found with TunerPro there is a specific order which must be followed for logging to work. Computer must be connected to the OBD1 port first. Car must be started. Then fire up the sequence to silence the CCM (I wrote mine into the logging startup script). Then start your data logging. If sit there key on/engine off and connect it will silence the CCM like it's supposed to but as soon as you crank the engine the ballast resistor shuts off all systems and the CCM restarts and begins blabbing and screwing up the data logging session.
06-20-2014, 03:35 PM
#28
Burning Brakes
you said your symptoms are " The car shakes when it stumbles and the exhaust pops when it stumbles" This sounds like a missfire dumping raw fuel in the exhaust. My suspicion is with the Optispark.
Last edited by FrankieD; 06-20-2014 at 03:42 PM.
06-20-2014, 05:31 PM
#29
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Thread Starter
It hasn't stalled, or struggled to start so I hadn't been thinking Opti, I can't rule it out though. I've got plugs and wires coming, and a fuel filter waiting to go in as part of just a general tuneup. I'm hoping once I get that done it will solve this problem.
Car is 98% original with only 29K on it. Who knows what else will need to be replaced with it being driven so little.
06-20-2014, 05:52 PM
#30
Race Director
I was hoping you weren't gonna say that. As far as I know that Optispark is a true OEM Delco, as it was replaced at the dealer by the PO 5 years ago, with less than 5K on it. That's a real disappointment if it turns out that it is actually the Opti.
It hasn't stalled, or struggled to start so I hadn't been thinking Opti, I can't rule it out though. I've got plugs and wires coming, and a fuel filter waiting to go in as part of just a general tuneup. I'm hoping once I get that done it will solve this problem.
Car is 98% original with only 29K on it. Who knows what else will need to be replaced with it being driven so little.
It hasn't stalled, or struggled to start so I hadn't been thinking Opti, I can't rule it out though. I've got plugs and wires coming, and a fuel filter waiting to go in as part of just a general tuneup. I'm hoping once I get that done it will solve this problem.
Car is 98% original with only 29K on it. Who knows what else will need to be replaced with it being driven so little.
Also, we want to figure out datamaster it is the best software out there.
Id love to figure out how to get the latest version (v4) to work on windows 7.
if you can figure it out, let us know.
The other datalogging software is not as good. Datamaster captures up to 10 datapoints a second!
06-22-2014, 12:59 AM
#31
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Thread Starter
I've got plugs and wires on the way now. Hoping and praying this alleviates the problem and it's not that Opti... I've still made no progress with datamaster. I'm afraid v4 is just broken when it comes to Windows 7. I have no idea when it comes to XP. I'd get a copy of XP if it meant I could actually use Datamaster.
06-22-2014, 08:36 AM
#32
Le Mans Master
I've got plugs and wires on the way now. Hoping and praying this alleviates the problem and it's not that Opti... I've still made no progress with datamaster. I'm afraid v4 is just broken when it comes to Windows 7. I have no idea when it comes to XP. I'd get a copy of XP if it meant I could actually use Datamaster.
06-22-2014, 10:27 AM
#33
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Thread Starter
Later today or tomorrow I'm gonna go give it another try with Datamaster and see if I can make any progress. I've got Scan9495 as well, I just don't know how accurate it will be as it was built for the F-body's. Any other recommendations for programs to datalog?