strange problem with chipped ecu..

Post by **Gaskleppie** » Sat May 31, 2008 3:02 am

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?

Post by **calvin** » Sat May 31, 2008 11:59 am

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

Bindegal · Post by **Bindegal** » Sat May 31, 2008 4:46 pm

My guesstimate: Dried out capacitor or something else causing the supply lines on the PCB down, probably in effect killing the voltage regulator. These ECUÂ´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

timmydogg · Post by **timmydogg** » Sat May 31, 2008 10:01 pm

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 ECUÂ´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.

Post by **calvin** » Sat May 31, 2008 10:20 pm

the biggest cap in the middle near connector b

Post by **Gaskleppie** » Sun Jun 01, 2008 5:04 am

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?

Post by **calvin** » Sun Jun 01, 2008 8:58 am

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

sewell94 · Post by **sewell94** » Sun Jun 01, 2008 7:05 pm

send me the circuit diagram, i have 3 ecus that won;t turn the fuel pump on either

Post by **calvin** » Sun Jun 01, 2008 7:10 pm

that is a damm fast fix.. I'll send you the details what to change

timmydogg · Post by **timmydogg** » Mon Jun 02, 2008 2:17 am

calvin wrote:the biggest cap in the middle near connector b

sweet, thanks. maybe this will save me a future issue.

fah · Post by **fah** » Fri Jun 06, 2008 12:46 pm

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.