Megasquirt Stalls after about 3 seconds.. It worked last week!
05-20-10, 09:07 AM
#1
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Stalls after about 3 seconds.. It worked last week!
Heyo guys,
I'm running out of ideas for my problem, so I'm hoping someone out there sees something glaringly wrong with my setup:
Back story:
I had it running multiple times before, up to 20 minutes while I was diagnosing some coolant & oil leaks, but I've never driven further than out into the driveway and back into the garage.
Recent history: Sunday, a friend stopped by and wanted to hear the car run, so I fired it up, it hit a stable idle and life was good, it ran about 3 or 4 minutes.
Monday night, I went down to work on it, and it will turn over, run for about three seconds, and then dies. There were no changes between sunday and monday....
Since then I put in new fuel (it was almost out), and tweaked the afterstart enrichment numbers a bit, thinking maybe it needed more or less fuel based on temperature now?? I just (this morning) reloaded my previous working save, so I'm back to what I know worked on it.
So what happens after about 3 seconds? For those first 3 seconds, I've got full throttle control, and everything works perfectly, then it just dies and nothing will save it.
I've attached the log as well as my current MSQ.. If you have any suggestions, I'd be much obliged, I haven't gotten to tune ANYTHING, that's what I was going to start doing when this happened.
Thanks!
Car Tech:
88 Turbo II
Streetported Engine
All emissions removed
All idle control removed except BAC valve (controlled by megasquirt)
Stock turbo
Front mount intercooler
Racing Beat 3" exhaust
Innovate Lc-1 wideband
MS Tech:
MS1 on 2.2 board w/ Errors* daughter-board
MS1/Extra rev 029y4
MS is controlling fuel and spark
I'm running out of ideas for my problem, so I'm hoping someone out there sees something glaringly wrong with my setup:
Back story:
I had it running multiple times before, up to 20 minutes while I was diagnosing some coolant & oil leaks, but I've never driven further than out into the driveway and back into the garage.
Recent history: Sunday, a friend stopped by and wanted to hear the car run, so I fired it up, it hit a stable idle and life was good, it ran about 3 or 4 minutes.
Monday night, I went down to work on it, and it will turn over, run for about three seconds, and then dies. There were no changes between sunday and monday....
Since then I put in new fuel (it was almost out), and tweaked the afterstart enrichment numbers a bit, thinking maybe it needed more or less fuel based on temperature now?? I just (this morning) reloaded my previous working save, so I'm back to what I know worked on it.
So what happens after about 3 seconds? For those first 3 seconds, I've got full throttle control, and everything works perfectly, then it just dies and nothing will save it.
I've attached the log as well as my current MSQ.. If you have any suggestions, I'd be much obliged, I haven't gotten to tune ANYTHING, that's what I was going to start doing when this happened.
Thanks!
Car Tech:
88 Turbo II
Streetported Engine
All emissions removed
All idle control removed except BAC valve (controlled by megasquirt)
Stock turbo
Front mount intercooler
Racing Beat 3" exhaust
Innovate Lc-1 wideband
MS Tech:
MS1 on 2.2 board w/ Errors* daughter-board
MS1/Extra rev 029y4
MS is controlling fuel and spark
05-21-10, 09:34 AM
#3
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That's what I thought too, so I dumped 5 gallon or so into it...
I did figure out the problem last night, though. After it was shutting down last night, I heard a buzzing for a few seconds afterwards.. I got my lovely assistant (i.e.: Annoyed wife) to crank the car for me and found out it was a relay under the dash by the glovebox. Something is going on where it uses the fuel pump during crank, but then it was turning off somehow once the car was running.
I took that out of the equation and directly wired the fuel pump. I didn't even realize that the relay was in there/had anything to do with it, but the car works again!
I did figure out the problem last night, though. After it was shutting down last night, I heard a buzzing for a few seconds afterwards.. I got my lovely assistant (i.e.: Annoyed wife) to crank the car for me and found out it was a relay under the dash by the glovebox. Something is going on where it uses the fuel pump during crank, but then it was turning off somehow once the car was running.
I took that out of the equation and directly wired the fuel pump. I didn't even realize that the relay was in there/had anything to do with it, but the car works again!
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