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strange problem with chipped ecu..
Posted: Sat May 31, 2008 3:02 am
by Gaskleppie
I chipped a P28 a few days ago. Nothing special, but when I put it in my car and turn the key it pulls all the injectors wide open and sets the fuelpump constantly on! The result is that I had 1.6 liters of fuel in my engine! What the f*ck can this be? Its doing it also without a chip in the socked. Nothing seems to be burned in the ecu. Anyone any idea what might be broken in this ecu?
Posted: Sat May 31, 2008 11:59 am
by calvin
computer is fucked.. frank remember it also happened with my ecu and my ostrich was fried too? MCU is done i couldn't fix it either i tried replacing the 7u0016 and that didn't help
Posted: Sat May 31, 2008 4:46 pm
by Bindegal
My guesstimate: Dried out capacitor or something else causing the supply lines on the PCB down, probably in effect killing the voltage regulator. These ECU´s are getting pretty old and we will see defective ones from time to time. I always replace the capacitor that sometimes blows up, just in case... /Allan
Posted: Sat May 31, 2008 10:01 pm
by timmydogg
Bindegal wrote:My guesstimate: Dried out capacitor or something else causing the supply lines on the PCB down, probably in effect killing the voltage regulator. These ECU´s are getting pretty old and we will see defective ones from time to time. I always replace the capacitor that sometimes blows up, just in case... /Allan
May I ask, what capacitor is that? I'm going to pull my ECU when I do EBC and would like to replace known weak or tired components.
Posted: Sat May 31, 2008 10:20 pm
by calvin
the biggest cap in the middle near connector b
Posted: Sun Jun 01, 2008 5:04 am
by Gaskleppie
Ok, Thanks guys! I have another ecu that is broken. Its a JDM P30 and the fuelpump output is broken. It does not start and stops at key on. What can that be?
Posted: Sun Jun 01, 2008 8:58 am
by calvin
ST143A you have 3 of them on the upper left corner.. one should be related to fuel pump.. send me a mail so i can send you the circuit diagram of an p28/p30
Posted: Sun Jun 01, 2008 7:05 pm
by sewell94
send me the circuit diagram, i have 3 ecus that won;t turn the fuel pump on either
Posted: Sun Jun 01, 2008 7:10 pm
by calvin
that is a damm fast fix.. I'll send you the details what to change
Posted: Mon Jun 02, 2008 2:17 am
by timmydogg
calvin wrote:the biggest cap in the middle near connector b
sweet, thanks. maybe this will save me a future issue.
Posted: Fri Jun 06, 2008 12:46 pm
by fah
calvin wrote:that is a damm fast fix.. I'll send you the details what to change
I have two ecu's with the same problem, can you send me the details too.