DIY Honda ECU Repairs- P30 P08 P27

EH4

Junior Member
Senior Member
Jun 7, 2010
21
0
1,501
melaka
E-Tech,ecu P27, C40 use wat capacitor arr??...right now i'm still looking for electronic shop area my place...:(...i'm looking for 3 caps 33uF 35V, 1 caps 100uF 35V and 1 caps 47uF 35V...and 1 unknown caps..:-B..(C15,C20,C21,C24,C40 and C??...atas C18)....and E-Tech,if i send my ecu to u,how long will it takes u to repair it??...actually,my friend ask me to ask u...hihihi...:P..tq
 

E-Tech

Senior Member
Senior Member
Thread starter
Jun 28, 2005
1,115
256
3,183
Johor
E-Tech,ecu P27, C40 use wat capacitor arr??...right now i'm still looking for electronic shop area my place...:(...i'm looking for 3 caps 33uF 35V, 1 caps 100uF 35V and 1 caps 47uF 35V...and 1 unknown caps..:-B..(C15,C20,C21,C24,C40 and C??...atas C18)....and E-Tech,if i send my ecu to u,how long will it takes u to repair it??...actually,my friend ask me to ask u...hihihi...:P..tq
EH4,
C40 is 100uf 10v... pls get all capacitor with tempreture rating 105c... normal caps 85c...

To repair normally 1 nite... it the courier that will take more time....

tq
 

EH4

Junior Member
Senior Member
Jun 7, 2010
21
0
1,501
melaka
tq bro....can u tell me,wat do u mean 'get all capacitor with temp rating 105c..normal caps 85c???'...and can i use 33uF 50V to replace my 33uF 35V??....sorry bro,so many question... :)...tq
 
Last edited:

E-Tech

Senior Member
Senior Member
Thread starter
Jun 28, 2005
1,115
256
3,183
Johor
eh4...
- 33uf 50v- shop will say can use... but i never tried before since i can get the actual part.
- when u buy the caps on the body(sleeves) have markings... e.g 33uf 35v 105c. This is the tempreture rating for the cap..... due to heat in the ecu and circuit it needs 105c to last....
ok?
 

EH4

Junior Member
Senior Member
Jun 7, 2010
21
0
1,501
melaka
ooo....now i know....tq bro....i just ask my friend to by all the caps at jln pasar...easier...hihihih....:P
 

iceman401

Known Member
Senior Member
Feb 14, 2006
141
0
1,516
bro,
check engine light on and have to wait long time then off during cold start. when hot ord, everything is normal. ecu problem?
 

E-Tech

Senior Member
Senior Member
Thread starter
Jun 28, 2005
1,115
256
3,183
Johor
bro,
check engine light on and have to wait long time then off during cold start. when hot ord, everything is normal. ecu problem?
:-O..... yes.... ecu related...
U checked the inside already?
 

iceman401

Known Member
Senior Member
Feb 14, 2006
141
0
1,516
checked but no idea what might be wrong. is it the ic12 that is screw to the wall? changed capacitor b4 but still the same.
it only happen when the engine is cold. when hot, then ok ord..
 

E-Tech

Senior Member
Senior Member
Thread starter
Jun 28, 2005
1,115
256
3,183
Johor
Nua of Pontian...
Here's about your ecu...


Problem: Semput semput when start. And Nua found water in the ecu. He tried to dry it up as
advise but could not solve the problem.


Analysis: Tested on my car, identified it as injector 4 not injecting fuel and CEL41.
So semput semput was actually only 3 cylinders running instead of 4.

Action: All 7 caps was changed as preventive measure.
QM2 was changed as it control the injector 4 and some smt components for CEL41 (O2 heater circuit.

Result: Test again on my car.... Check light off and engine fire up with all cylinders running.
Problem solved...
 

Attachments

invicta

500 RPM
Senior Member
Mar 30, 2006
532
2
1,518
hi bro tan.. i got 1 bad ecu and after replace whole 7ea cap the ecu can run only a week..
so i replace again will all new set of 7ea cap. after replace, the same prob still occur, after the key turn, the check light cannot goes off.. no click sound heard.. just stay the same..

l hav clean all the oxisidies track nearby and from tracing , look the transistor b1068 is like shorted.. i dont know it is short or not but need to find replacement. some same for the ic m5565 29. i think this ic is simply2 cannot find anywhere.. but i hope it will be no prob..

one more thing, can u help me, is it the big cap connected to the ic number njm2904sx, leg no 7? seem like got 1 track orphan there nearby.i dont hav any p27 here, no one can be compared..

thanks bro..
 
Last edited:

E-Tech

Senior Member
Senior Member
Thread starter
Jun 28, 2005
1,115
256
3,183
Johor
hi bro tan.. i got 1 bad ecu and after replace whole 7ea cap the ecu can run only a week..
so i replace again will all new set of 7ea cap. after replace, the same prob still occur, after the key turn, the check light cannot goes off.. no click sound heard.. just stay the same..

l hav clean all the oxisidies track nearby and from tracing , look the transistor b1068 is like shorted.. i dont know it is short or not but need to find replacement. some same for the ic m5565 29. i think this ic is simply2 cannot find anywhere.. but i hope it will be no prob..

one more thing, can u help me, is it the big cap connected to the ic number njm2904sx, leg no 7? seem like got 1 track orphan there nearby.i dont hav any p27 here, no one can be compared..

thanks bro..
Bro can you send me a good picture of the area you suspect no good?
 

Random Post Every 5 Minutes

hi all, got this problem after transplant to 6a12TT. My car now like not enough voltage, everytime I open door, my alarm system auto switch on hazard light (both signal lamp blinking)..when that happen, all inside-car lamp,clock,warning light keep fade in-fade out following that hazard light.According Volt meter in my Apexi TT,reading are 13.5-14.0 with engine idling. And when I keep pressing my auto window..voltage drop 1 by 1 till 13.0...I got pivot raisin VS installed but no G-cable as my...
Ask a question, start a discussion or post something for sale!
Post thread

Online now

Enjoying Zerotohundred?

Log-in for an ad-less experience