MISFIRE CONDITION

2004 Chevrolet Epica

Tiny

MrMechanic1968

July, 31, 2011 AT 9:43 PM

I am a Mechanic from Ont. Canada. I am working on a 2004 Chev Epica with aprox. 99 000kms with the complaint of "lack of power" Aprevious attempt to repair the issue was preformed by doing a tune up. The plugs (NGK), coil boots, fuel and air filters, bank2 sen1 02 sensor were replaced. Launch scanner revield missfires on #'s 3, 4, & 5 cyls and a PO158 voltage high on bank 1 sen2 O2. If this code is set the missfire disappears. If the codes are cleared, the missfire redevelops untill the code sets again? What is the probable cause

FOUND 2124 RELATED QUESTIONS

Mis Fire -

17 ANSWERS
11 IMAGES

2 Answers

Tiny

rasmataz

October, 2, 2011 AT 1:20 AM

Inspect and test the crankshaft position sensor and camshaft position sensor-

Also go to this link: http://www.2carpros.com/articles/engine-misfires-or-runs-rough

Tiny

s23599e

November, 1, 2011 AT 8:56 PM

Hi, do you resolve your problem with your epica?

I have the same problem since 3 week

Thank a lot

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