Powerlogger file
- Thread starter V8killR4U
- Start date
Welcome!
By registering with us, you'll be able to discuss, share and private message with other members of our community.
Eric Stage I
TurboTweak Guy
- Joined
- May 25, 2001
- Messages
- 2,671
Just to clarify, there is a 6.0 chip and an SD chip, not a 6.0 SD chip.:smile:
Overall it looks ok. You could probably reduce highway fuel a bit though.
Overall it looks ok. You could probably reduce highway fuel a bit though.
LOL thanks Eric for the clarification. Did you see anything screwy with my TPS voltage or correction? Im not sure if its on this log or not, but my TPS voltage seems to fall off during WOT blasts? When testing with SM with car off, voltage is where it needs to be at WOT, but on the actual runs i see it falling off in voltage on several runs...?
Eric Stage I
TurboTweak Guy
- Joined
- May 25, 2001
- Messages
- 2,671
It does appear to be low. You're not accidentally letting off? Your MAP reading also gets weird, jumping up and down. I wonder if something is wrong in the 5v circuit (which would power both the MAP and TPS sensors).
I dont think im letting off... I'll have to check the 5 volts. My TPS sensor does not hold still when setting. Its fluctuates between .40 to .46. It will not stay still
How does the correction look to you?
Check the grounds on the back of the head, it grounds alot of things to the ecu. The TPS ground is isolated at pin D12 directly to the ecu, but is shared with the coolant temp and air temp sensor. Log confirms those sensors are fluctuating too. Either bad ecu of ground somewhere is dirty/loose, etc
Mike Licht
I was here first
- Joined
- May 23, 2001
- Messages
- 4,642
the map sensor is powered from the dashboard and that voltage is failing in many cars, check that as well
ML
ML
Grounds on the back of the head look fine. I have switched ECU's once and the fluctuating seemed to decrease some but not totally. I may just try anotherknown working ECU. So if i understand correctly. The ECU ground at pin D12 is the issue, not the harness plugging into it....
How do I check this, simply with a voltmeter and if it is failing, how do you fix the problem.
Mike Licht
I was here first
- Joined
- May 23, 2001
- Messages
- 4,642
I would pull the voltage from the tps which come from the ECU.
ML
ML
What exactly are you looking at on the PL file to determine that?
Also is there anything to clean the harness and the plug at the ECM with regards to the bad ground, like dielectric grease or WD40?
I looked at the battery voltage its in one of the power logger graphs you can pick. I think its a bad diode or rectifier in the alternator. Those ecm connections are usually pretty clean unless your car leaked water in to the ecm. Wd40 just removes moisture usually, but it won;t hurt anything.
I took a look at the voltage chart and see a drop from 13.9 to 13.1, is that enough to cause a problem? Or cause the type of problems that I could be seeing in my map and tps voltage drop? Im assuming yes. 1 volt drop on a 5 volt signal....
I took a look at the voltage chart and see a drop from 13.9 to 13.1, is that enough to cause a problem? Or cause the type of problems that I could be seeing in my map and tps voltage drop? Im assuming yes. 1 volt drop on a 5 volt signal....
Not likely. Even though the 12v dropped nearly a volt, any drop in the 5v signal would not be any where near that.
Similar threads
