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Old 11-29-2013, 03:06 AM   #1
rsdog
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Default flashing ecu /engine light

Howdy guys

Weird problem ... well for me

I have enough tools to check engine codes etc, but the light does not stay on, it just keeps flashing the whole time, even when just turning the car on without starting it. Like I said, no error codes ?

I changed the rpm limit to 2500 rpm with ecuflash a week ago when I took the car to the panel shop for some scratches to be fixed. The reason I put the rpm limit on 2500 rpm is to prevent the clowns from taking my car for a joyride.

When I was done (setting rpm limit), I took the car to them and hit the rpm limiter to test. From there the car started doing it and hasn't stopped.

I thought it would reset itself but it did not. Green test connectors etc has been disconnected as well, so not that. Any idea ? How to test for misfire, it does sometimes feel like that ?

It is a 2001 JDM WRX STI, fully rebuild engine. Checked and fixed all codes after rebuild ... but no this
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Old 11-29-2013, 03:52 AM   #2
04wrxhart
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flashing cel means you've got a miss fire. Its very possible one of your coil packs took a dive. You should be able to pull a code telling you which cylinder is missing, at least i was able to with my old accessport. With that info i made sure it was bad coil pack by swapping it with another cylinder, and sure enough the miss fire moved to that cylinder.

Last edited by 04wrxhart; 11-29-2013 at 04:41 AM.
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Old 11-29-2013, 03:57 AM   #3
rsdog
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Quote:
Originally Posted by 04wrxhart View Post
flashing cel means you've got a miss fire. Its very possible one of your coil packs took a dive.
Hi there

Should it surely not leave an error code then?
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Old 11-29-2013, 05:19 AM   #4
04wrxhart
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That is whats throwing me off, when I had a flashing cel it did leave an error code. Was a miss fire in cylinder 3, what ever that code was.
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Old 11-29-2013, 06:52 AM   #5
alexandern05
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Flashing check engine light is a misfire try scanning it and it should come up if not have a shop try scanning it
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Old 11-29-2013, 07:30 AM   #6
Mulder
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Quote:
Originally Posted by rsdog View Post
it just keeps flashing the whole time, even when just turning the car on without starting it.
That's not from a misfire. Sounds like it's in test mode even though the green connectors are unplugged. Are the fans and solenoids cycling?
Not sure if your non-USDM ECU will behave the same as ours, perhaps you should contact Ecutek and ask them about it.
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Old 11-29-2013, 10:22 AM   #7
Pesias
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check under your dashboard. now there this one male female green plugs that need to be unplug. flashing engine light usually means that the green plug are connected. unplug them and all will be fine.

goodluck
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Old 12-02-2013, 05:47 AM   #8
rsdog
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Green plugs are not plugged in. Fans not cycling etc ...

HOWEVER

I think I might have found the problem ...

It seems like my knock sensor is over sensitive. We rebuild the engine with the best Forged goodies money can by recently and I think the forged internals creates more noise than what the sensor likes.

Plugged into the ECU again, ran some logs, noticed my AM was on 0 and not 16. So I reset the ECU, AM back on 16, but as soon as I start the engine, AM drops to 0 again and light flashes.

Will remove sensor this afternoon, add a paper washer to try and take some sensitivity off and see if AM stays on 16 and light flashing stops ...
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Old 12-02-2013, 08:08 AM   #9
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Quote:
Originally Posted by rsdog View Post
Green plugs are not plugged in. Fans not cycling etc ...

HOWEVER

I think I might have found the problem ...

It seems like my knock sensor is over sensitive. We rebuild the engine with the best Forged goodies money can by recently and I think the forged internals creates more noise than what the sensor likes.

Plugged into the ECU again, ran some logs, noticed my AM was on 0 and not 16. So I reset the ECU, AM back on 16, but as soon as I start the engine, AM drops to 0 again and light flashes.

Will remove sensor this afternoon, add a paper washer to try and take some sensitivity off and see if AM stays on 16 and light flashing stops ...
Your map has you starting with your IAM maxed?
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Old 12-02-2013, 11:46 AM   #10
rsdog
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Quote:
Originally Posted by JonnyV2889 View Post
Your map has you starting with your IAM maxed?
Yes. The default AM is 8 on the JDM model and I have made mine 16, why you asking bud ?
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Old 12-02-2013, 11:48 AM   #11
rsdog
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The plot thickens ....

I have replaced the Knock sensor now as well, but it still does it where I reset the ECU, AM shows 16, but while the engine cranks and starts to AM drops to 0 ???

Engine light flashing constantly still. I guess the two problems are related ? (AM dropping to 0 and flashing ecu light)

Any help?
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Old 12-03-2013, 12:15 PM   #12
danger1138
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All sensors connected? Cam, crank, etc..
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Old 12-04-2013, 05:42 AM   #13
kellygnsd
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Check the timing. They may have smacked the rev limiter a few times just trying to move it with that ridiculously low rpm limit. 4500-5000 would have kept them out of trouble. Have you flashed the original map back on?
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Old 12-04-2013, 08:03 AM   #14
rsdog
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Quote:
Originally Posted by danger1138 View Post
All sensors connected? Cam, crank, etc..
Yep all connected. If this were not connected, you will receive a CEL code anyways.
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Old 12-04-2013, 08:06 AM   #15
rsdog
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Quote:
Originally Posted by kellygnsd View Post
Check the timing. They may have smacked the rev limiter a few times just trying to move it with that ridiculously low rpm limit. 4500-5000 would have kept them out of trouble. Have you flashed the original map back on?
I will check timing. I have loaded the original MAP back on yes, so Timing should be standard.

The only timing, which is one of the problems, maybe related, is the AM that is at 0.

I will reset the ECU or load original MAP back on, only switch on the car, and AM will be 16. But as soon as I crank the engine, AM drops to 0 ??
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Old 12-11-2013, 05:34 AM   #16
rsdog
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Found the problem !!

The panel beaters in their infinite wisdom connected the two small black connectors to each other, insulation taped other wires to it and hid it right up in the top under the dash ..

Mother of Donkeyballs .....

Just thought I would share
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