Randomly dying MSLabs MS3 Basic
#1
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Randomly dying MSLabs MS3 Basic
I recently installed my KMiata E46 ZF 6Speed transmission swap kit and originally had an issue with the car starting up and running for a few seconds then dying. I have since fixed this issue by running a jumper ground from the old PPF grounding wire to the engine block but am now seeing a new issue.
When I am driving the car will randomly lose power and start to decel while in gear because the engine cuts off. This only lasts for 1-2 seconds and if I leave the car in gear it will start running fine again until this process repeats itself.
Attached is my tune file, a sample datalog and a screenshot from the datalog showing where this issue is located in the log.
I'm not sure if a damaged my MS fron trying to start the car without that ground in place or if this is still a grounding issue but if anyone is able to look at the file and see if they notice anything I'd appreciate it.
When I am driving the car will randomly lose power and start to decel while in gear because the engine cuts off. This only lasts for 1-2 seconds and if I leave the car in gear it will start running fine again until this process repeats itself.
Attached is my tune file, a sample datalog and a screenshot from the datalog showing where this issue is located in the log.
I'm not sure if a damaged my MS fron trying to start the car without that ground in place or if this is still a grounding issue but if anyone is able to look at the file and see if they notice anything I'd appreciate it.
#2
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It looks like a faulty MAP sensor to me. When the issue happens, MAP plunges down to ~11kPa, hence the ECU cuts almost all fuel and the car bogs down. I don't any issue on any other sensors so I don't think it's a sensor ground - my original hypothesis as I was reading your post.
#3
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It looks like a faulty MAP sensor to me. When the issue happens, MAP plunges down to ~11kPa, hence the ECU cuts almost all fuel and the car bogs down. I don't any issue on any other sensors so I don't think it's a sensor ground - my original hypothesis as I was reading your post.
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UPDATE:
A friend had a new omni 3bar MAP laying around and I swapped it out with my old GM 3bar and couldn't replicate the issue at all. @Reverant Thanks again, you were spot on! Car is back to running flawlessly!
A friend had a new omni 3bar MAP laying around and I swapped it out with my old GM 3bar and couldn't replicate the issue at all. @Reverant Thanks again, you were spot on! Car is back to running flawlessly!
#5
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I didn't remember that you had an external 3bar sensor. I haven't had luck on my car with a GM 3bar either, it started reading lower MAP values (over time) until the car would no longer run.
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