Engine cuts out after 1/4 throttle

s300 and SManager software questions & answers
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danielthenerd
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Joined: Tue Oct 13, 2020 7:01 am
Location: Tennessee

Engine cuts out after 1/4 throttle

Post by danielthenerd »

Recently installed an S300 on my P28. Engine ran fine prior to S300 install and I'm not sure what I did and how to fix it. The engine cuts out after 1/4 throttle, and occasionally dies out. Sometimes it will come back on and lurch then quickly cut out again.
I saw on some other threads it was the TPS. I performed the TPS calibration. It still does it. I can see the values in datalogging with engine running so I'm not quite sure why this is happening.

What other troubleshooting steps should I be doing?

P28
Yes J12 is cut
TPS has been calibrated from sManager (-0.48% / 101.57%)
Using base P30 map with ELD and Knock disabled

Custom wire harness on race car
Rywire engine harness to P28
Stock everything
Stock OBD-II injectors with OBDII\I conversion harness on injectors
Slow is smooth. Smooth is fast.
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Spunkster
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Location: Hondata

Re: Engine cuts out after 1/4 throttle

Post by Spunkster »

Post your calibration as well as a datalog showing the issue.
danielthenerd
Posts: 14
Joined: Tue Oct 13, 2020 7:01 am
Location: Tennessee

Re: Engine cuts out after 1/4 throttle

Post by danielthenerd »

Sorry, forgot to add that. Here are those files.
Attachments
daniel_CRX_cuts_out.s3d
(1.25 MiB) Downloaded 118 times
Stock-P30.skl
(43.09 KiB) Downloaded 102 times
Slow is smooth. Smooth is fast.
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Spunkster
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Re: Engine cuts out after 1/4 throttle

Post by Spunkster »

The datalog you have posted does not really show anything and seems stuck at 3100RPM for quite some time, then when the RPM moves, there is no throttle input at all.
danielthenerd
Posts: 14
Joined: Tue Oct 13, 2020 7:01 am
Location: Tennessee

Re: Engine cuts out after 1/4 throttle

Post by danielthenerd »

That is interesting. On that run, I drove it up a slight incline then back down, maybe 1/4 mile. I was holding the throttle open slightly at 25/35%. It would pull slightly then cut out and do that a few times before I pushed the clutch in and turned around. Let me try to re-record.
Slow is smooth. Smooth is fast.
danielthenerd
Posts: 14
Joined: Tue Oct 13, 2020 7:01 am
Location: Tennessee

Re: Engine cuts out after 1/4 throttle

Post by danielthenerd »

Here is a new run I just made down the street. When the RPM stalls out (331\162\etc), is when the engine stalled\died.
Attachments
Stock-P30.skl
(43.09 KiB) Downloaded 94 times
daniel_CRX_cuts_out-2.s3d
(1.24 MiB) Downloaded 108 times
Slow is smooth. Smooth is fast.
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Spunkster
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Re: Engine cuts out after 1/4 throttle

Post by Spunkster »

It looks like it is reading the TPS as it should and is more than likely just a tuning issue. I never see the throttle go above 54%.
danielthenerd
Posts: 14
Joined: Tue Oct 13, 2020 7:01 am
Location: Tennessee

Re: Engine cuts out after 1/4 throttle

Post by danielthenerd »

I don't get it then, as I am using a P30 base map from sManager. Nothing special, only disabled ELD and Knock.
Slow is smooth. Smooth is fast.
danielthenerd
Posts: 14
Joined: Tue Oct 13, 2020 7:01 am
Location: Tennessee

Re: Engine cuts out after 1/4 throttle

Post by danielthenerd »

Could any of this be because of bad socketing or the capacitors?
Slow is smooth. Smooth is fast.
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Spunkster
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Re: Engine cuts out after 1/4 throttle

Post by Spunkster »

This does not sound like it has anything to do with the ECU.
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