Datamaster questions.
- Thread starter Damian
- Start date
Re: Datamaster questions.
One thing I noticed is that when I disconnect the timing wire, the spark advance reading on datamaster remains the same.
Datalog here: https://www.dropbox.com/s/3w1xeqhv37vnl8c/test #5.uni
One thing I noticed is that when I disconnect the timing wire, the spark advance reading on datamaster remains the same.
Datalog here: https://www.dropbox.com/s/3w1xeqhv37vnl8c/test #5.uni
Re: Datamaster questions.
I took it out for a drive and put some gas in it. Here is the drive I did: https://www.dropbox.com/s/kb1xza68ahx55vn/test #6.uni
It sounds like I have a huge charge pipe leak but I checked every single connection and they are solid. I used carb cleaner and couldnt find anything. Tightened down on the BOV and that didnt change anything. It feels very under powered, no where near what it was before.
I took it out for a drive and put some gas in it. Here is the drive I did: https://www.dropbox.com/s/kb1xza68ahx55vn/test #6.uni
It sounds like I have a huge charge pipe leak but I checked every single connection and they are solid. I used carb cleaner and couldnt find anything. Tightened down on the BOV and that didnt change anything. It feels very under powered, no where near what it was before.
randy merritt
Donating Member
Re: Datamaster questions.
It is beeping because of the error codes. Your log had many error codes. You can turn off the chime for error codes in datamaster.
It is beeping because of the error codes. Your log had many error codes. You can turn off the chime for error codes in datamaster.
fivetodrive
CRISPY
Re: Datamaster questions.
Not sure if this was the tread about rewiring the ECM for better voltage... but here is what I found...
http://www.syty.net/forums/showthread.php?t=35874&pp=15&page=2
Not sure if this was the tread about rewiring the ECM for better voltage... but here is what I found...
http://www.syty.net/forums/showthread.php?t=35874&pp=15&page=2
Re: Datamaster questions.
I found the second quote but his lack of punctuation makes it difficult to understand. Which relay is he talking about and what gauge wire am I supposed to use? I was trying to find something with pictures, I need pictures when it comes to electrical stuff!
I found the second quote but his lack of punctuation makes it difficult to understand. Which relay is he talking about and what gauge wire am I supposed to use? I was trying to find something with pictures, I need pictures when it comes to electrical stuff!
fivetodrive
CRISPY
Re: Datamaster questions.
I agree with Dave. Try the meter first. I will tonight if I get time.
I am having voltage issues because of a wiring install, ground changes, and a strange ignition drop out issue that appears when I brakestall it, ect... So that's why I was looking for the ECM Mod in case I needed it. I am also working on getting new grounds installed but my voltage drops below 12 at idle and I lose datamaster connectivity.
It might be a battery problem for me. I bought a new battery this weekend to help with my battery relocation project!
Plus I have 75lb injectors on the shelf
I agree with Dave. Try the meter first. I will tonight if I get time.
I am having voltage issues because of a wiring install, ground changes, and a strange ignition drop out issue that appears when I brakestall it, ect... So that's why I was looking for the ECM Mod in case I needed it. I am also working on getting new grounds installed but my voltage drops below 12 at idle and I lose datamaster connectivity.
It might be a battery problem for me. I bought a new battery this weekend to help with my battery relocation project!
Plus I have 75lb injectors on the shelf
Re: Datamaster questions.
I just went out there and the volt meter reflects what DM is showing. I didnt take it for a drive, but I revved the motor, held different RPMs, still reflect each other. I did the same thing on the alternator and I get 14.57-14.58 volts at idle, and when I rev it, it drops to 14.3 volts.
I dont mind doing things that help, but solve the problem. Im pretty sure getting higher voltage to the ECU will help things run a bit smoother.
So if it is my chip, can I even get another one? Ill have to get it flashed again though.
I just went out there and the volt meter reflects what DM is showing. I didnt take it for a drive, but I revved the motor, held different RPMs, still reflect each other. I did the same thing on the alternator and I get 14.57-14.58 volts at idle, and when I rev it, it drops to 14.3 volts.
I dont mind doing things that help, but solve the problem. Im pretty sure getting higher voltage to the ECU will help things run a bit smoother.
So if it is my chip, can I even get another one? Ill have to get it flashed again though.
Re: Datamaster questions.
Took the Ty to the store and I noticed two things. One was I kinda got on it when the engine was only about 100 degrees, only hit maybe 10psi. Thing is, it ran so much better than it does she the engine is up to temp. Second thing I noticed is my tach was jumping around like crazy when the rpms got up around 4000 plus. Sad part is that I have a brand new complete distributor in there. I haven't done the power wire mod yet.
Took the Ty to the store and I noticed two things. One was I kinda got on it when the engine was only about 100 degrees, only hit maybe 10psi. Thing is, it ran so much better than it does she the engine is up to temp. Second thing I noticed is my tach was jumping around like crazy when the rpms got up around 4000 plus. Sad part is that I have a brand new complete distributor in there. I haven't done the power wire mod yet.
The Bronze
New member
Re: Datamaster questions.
When you did your voltage testing, did you check the voltage during cranking. Your cranking voltage is the issue I saw, not your running voltage. I would compare the voltage during cranking at the battery and the ECM. After that, my observation was that you never had BLock Learn add or subtract fuel. The "long term" fuel correction should be being stored and retrieved when the vehicle is operating under those conditions. I am wondering is it "disabled" (I see DM indicates it is enabled)or (unknown based on your short Adam logs) is the ECM resetting upon each startup?
Not the cause of your flutter, but proper power supply during cranking is pretty important. Most vehicle PCMs can tolerate 9.5V during crank, but cars like Mitsubishis cannot due to capacitor sizing).
Log your RPM when the flutter is taking place. Large flutter should be seen on the data log. Also keep a steady rpm while this flutter is occurring and indicate it on the data log. Maybe by cycling the Ac request? I am not sure if that would indicate immediately , but would leave a nice marker, say, after the issue just occurred.
I really need my SY done to test all these tricks that work on other cars.
When you did your voltage testing, did you check the voltage during cranking. Your cranking voltage is the issue I saw, not your running voltage. I would compare the voltage during cranking at the battery and the ECM. After that, my observation was that you never had BLock Learn add or subtract fuel. The "long term" fuel correction should be being stored and retrieved when the vehicle is operating under those conditions. I am wondering is it "disabled" (I see DM indicates it is enabled)or (unknown based on your short Adam logs) is the ECM resetting upon each startup?
Not the cause of your flutter, but proper power supply during cranking is pretty important. Most vehicle PCMs can tolerate 9.5V during crank, but cars like Mitsubishis cannot due to capacitor sizing).
Log your RPM when the flutter is taking place. Large flutter should be seen on the data log. Also keep a steady rpm while this flutter is occurring and indicate it on the data log. Maybe by cycling the Ac request? I am not sure if that would indicate immediately , but would leave a nice marker, say, after the issue just occurred.
I really need my SY done to test all these tricks that work on other cars.
dgoodhue
BuSTeD 4.3
Re: Datamaster questions.
Could any of your wires be touching the Down Pipe? Wrongs plugs or too much of a gap? I worked on a truck with a bad 2 wire connector between the coil and distributor. (mouse chewed wire)
Could any of your wires be touching the Down Pipe? Wrongs plugs or too much of a gap? I worked on a truck with a bad 2 wire connector between the coil and distributor. (mouse chewed wire)