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1G No start after first cold start

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Manik511

Probationary Member
18
1
Jul 17, 2021
Forest Grove, Oregon
92 Eagle Talon TSi AWD build.

Okay, so been having this issue where it'll start immediately when cold and idle just fine, but if I shut it off even after a minute of running with temp at 93*F it just cranks and doesn't start.

Sprayed starting fluid and it starts right up and runs fine again. Shut it off, try without starting fluid and no start again. At first I thought it was a hot start issue because I'd let it warm up fully then wouldn't start again even after an hour of cooling down.

It is in need of a tune and only on a base map right now with few proper adjustments, been doing pre-tune prep to get it ready for tune but have this issue. I'm using ECMLINK v3 SD, FIC 1250CC AEM340 GM 3bar, Holset hy35. Engine is stock but is a brand new rebuild with few miles to set rings but not driving more until tuned.

Any ideas?
 
As always, please post a log file from this happening. You attach it by using the Add Photos button and selecting the ECMLink elg file.
Ok I'll do that. So should I just log a cold start let it run a few mins, shut it off and trying to restart it? I already have one like that but I'm going to do another cus I had someone help me with few things fuel related that needed to be adjusted and SD.
 
skip to 50 seconds.. im an idiot and was messing with throttle body before starting and the cable got hung up on the side which is why my rpm is so high at first and throttle position isnt at 0. but normally when the cable isnt stuck from my stupidity it starts right up with ease with no throttle. at 164 seconds i shut it off and try restarting. also in middle of that log i changed dead time to try to get it closer to 14.7 idk what it says for you but rn its set at 470 was at 450.
 

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Post what you have now and the other when you get a chance to make the new logs.
Heres another of how it runs at operating temp. This was from a cold start kept engine running and started a new stream after changing the global fuel just a lil bit. Lmk if you need anything else, thanks! And yes i know i need to adjust my isc position again, had it at 30 but after doing some fuel adjustments with someones help it changed and just havent done it again.
 

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Looking for the log of your warm start problem when you get the chance.
Sorry did you mean, "Looking at the log of your warm start problem when I get the chance"? Or was there something wrong with the log I posted?
 
Nothing wrong, they just don't show the issue you posted and don't show any glaring configuration problems. I can't comment on the quality of the tune since it's SD.

I assume these are gas.
What about the cranking fuel? Think it may be too high? And yeah idk what to even look for in the log while in cranking it after it was running but think I'm gonna compare the cold start cranking values to warm start cranking, although I don't think it's a temp issue anymore. But I honestly have no idea at this point and am pretty stumped, don't know what to even check next.

Anyone else have this similar issue or got any ideas? Why would I be able to start it after not running for hours then shut it off immediately and try to restart it with coolant temp only at 93°f and won't start. Spray starting fluid and starts right up with smallest amount. Raised cranking fuel and didn't change, lowered it lower than stock and almost started couple times then back to cranking over. Maybe go lower on cranking fuel?
 
Nothing wrong, they just don't show the issue you posted and don't show any glaring configuration problems. I can't comment on the quality of the tune since it's SD.

I assume these are gas.
And yes pump gas.

Bit of an update, yesterday I got the data sheet for my injectors and put in the correct InjBatteryAdj to the correct volts, set cranking fuel below stock and was able to get it to restart 3 times as temps climbed but it was rich because I forgot to change global deadtime which was at 450 (1st log labeled new adjust), but it actually started when I'd shut it off which its never done. But eventually at 170+ temp it wouldn't start back up (2nd log labeled new stream but kept engine running from 1st log).

Pulled plugs and looked little wet but was also idling in low 11s so kinda expected.

That was yesterday now today I put deadtime to 0 it had a bit of a rough start and died once guessing it was just adjusting to the new changes but once it started smoothing out was a little lean so put 100 deadtime and AFR was better after that (3rd log). Let it run for a bit, shut it off, and couldn't get it to start again.

Any ideas anyone? Going to check for spark and wetness right now after its not starting and see what happens.
 

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Nothing wrong, they just don't show the issue you posted and don't show any glaring configuration problems. I can't comment on the quality of the tune since it's SD.

I assume these are gas.
Well its the first log i sent that has the issue where it doesnt restart when i shut it off but need to skip to 164secs. That 2nd one i sent is just how it looks running at operating temps. Im not sure if it shows a obvious problem though which is where i need help.
 
Pump gas or e85? If pump gas turn back on hot start enrichment, return cranking fuel to stock and also lower ISC offset back to stock in the warmer coolant temp areas.

I only ever sometimes need to shut off hot start enrichment with some e85 car's with quite wild configurations.
 
Pump gas or e85? If pump gas turn back on hot start enrichment, return cranking fuel to stock and also lower ISC offset back to stock in the warmer coolant temp areas.

I only ever sometimes need to shut off hot start enrichment with some e85 car's with quite wild configurations.
Yeah it's pump. Okay I'll do that.

But I just narrowed down my issue last night. After trying 2 good batteries my starter and fuel pump seems slower when it will no longer start, which I already tried jumping it with a smaller jumper and didn't help so I hooked up a big jumper with 40amp boost and it starts every time, so I put on a battery I know for a fact is good and still wouldn't start, so I checked for a draw.

When I put a test light to -cable and -post it comes on but it pulses? Doors are shut except trunk lid cus my battery is back there but my trunk switch stopped working awhile back and key ring light or trunk light doesn't come on anymore. Started pulling fuses and when I pull the alternator one there's no more power to the car at all when I put cables back on, is that normal?

Also the fuse must of blown with previous owner cus the cap is off it and the spot where the fuse blew both sides are just twisted together making it to where it couldn't blow if it wanted to. So I'm addressing that asap and checking alternator wiring..

And I know I should use a multimeter to test for draw and am going to do that today then will update along with what I find out on alternator wiring cus something isn't right.
 
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