Violent Power Cut

[pandaman]

hi guys

im having issues with my rb25

it has a rough idle, and when it is boosting has a sudden very violent power cut, with a very loud thud sound coming from the passenger side. but only for a brief second and keeps revving most times.

so far i have checked the following

its running 0.8mm spark plug gap

splitfire coils, have check look fine

new ignitor

AFM checked with know working one

and has a new fuel pump (tomei drop in)

checked cat and tested with decat

car has a power fc

voltages, knock, etc all look fine to

not sure what to check next?

[BenSm]

hi guys

im having issues with my rb25

it has a rough idle, and when it is boosting has a sudden very violent power cut, with a very loud thud sound coming from the passenger side. but only for a brief second and keeps revving most times.

so far i have checked the following

its running 0.8mm spark plug gap

splitfire coils, have check look fine

new ignitor

AFM checked with know working one

and has a new fuel pump (tomei drop in)

checked cat and tested with decat

car has a power fc

voltages, knock, etc all look fine to

not sure what to check next?

boost leak? maybe?

[jiffo]

What boost control?

[pandaman]

boost leak? maybe?

i have done a quick visual check and nothing i can spot (didnt have any carby clean on hand to do a proper test)

What boost control?

avc-r been in the car for a few years

[lachlanw]

what car ?

[pandaman]

s1 r33 gtst

[paulr33]

what ever is wrong, it's pretty serious

ie a vacuum leak wouldnt cause this or simple config error

check the ECU, check for physical damage or component damage

check the connector into the ECU, is it firm and not loose / floppying with mangled wires hanging out

how is the state of the loom ? when it occurs anything odd in ETC, SENSOR SW CHECK ? (Drive with this on the screen and watch when it occurs)

[pandaman]

what ever is wrong, it's pretty serious

ie a vacuum leak wouldnt cause this or simple config error

check the ECU, check for physical damage or component damage

check the connector into the ECU, is it firm and not loose / floppying with mangled wires hanging out

how is the state of the loom ? when it occurs anything odd in ETC, SENSOR SW CHECK ? (Drive with this on the screen and watch when it occurs)

thanks Paul ill check these out

i had the stand 8 input monitior up everytime i tested something new and it sort of didnt effect any of those

checked the pecks and nothing stands oput as being wrong there, even knock was quite low

does anyone think it could be fuel pump wirring?

[mr 32]

What is the voltage of the fuel pump at idle?

[pandaman]

haven't had a chance to have another look this week yet but does anyone think it could be the stock turbo killing itself?

[B-rice]

old thread revival what was the outcome with this???