CEL 8 , fuel pump doesnt turn off

krysrein

#1 05 Jul 2017, 07:51 ◈ 2019-09-20

Hi, I have a problem with chipped p28.
On ignition, fuel pump doesnt turn off when the cel turns off.
When I turn key to igintion position CEL blinks faster then normal.
Ecu shows CEL 8 - and again it blinks faster then normal.
Try another ROMs - still the same problem.
Try other ECUs on car - works fine.
I try this ecu in my friend car - the same problem.
Any ideas?

iDavyJ

#2 13 Jul 2018, 11:07 ◈ 2019-09-20

Re: CEL 8 , fuel pump doesnt turn off

Qm3 faulty?

relic1

#3 13 Jul 2018, 12:52 ◈ 2019-09-20

Re: CEL 8 , fuel pump doesnt turn off

CEL8 is likely unrelated, but can be ruled out.

drop back to factory program:
still leaves on Pump: short across output or bad part/driver (as mentioned above)
pump works like normal (or no CEL8): [added confusion] check for bad chip job

JaredKaragen

#4 24 Jul 2018, 08:08 ◈ 2019-09-20

Re: CEL 8 , fuel pump doesnt turn off

was this one of those factory ecu's that has a EEPROM preinstalled? (looking at the 373 should tell you if this is the case) I have noticed funny behavior with those ecu's in the past....

krysrein

#5 14 Sep 2018, 19:51 ◈ 2019-09-20

Re: CEL 8 , fuel pump doesnt turn off

Replaced the ny1-cg - still the same situation , ecu run like 1,5x faster

blinks error faster then another ecus