1995 Pontiac Grand Prix PO141 engine missing and idle is su

Tiny
HAMMERFIX
  • MEMBER
  • 1995 PONTIAC GRAND PRIX
Engine Performance problem
1995 Pontiac Grand Prix 6 cyl Two Wheel Drive Automatic

changed spark plugs and wires. Still has engine miss and rpm surges and rotton egg smell. Need to know location of bank 1 sensor 2 and will just a defective sensor create these problems?
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Sunday, March 7th, 2010 AT 9:44 PM

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Tiny
RASMATAZ
  • MEMBER
Engine running rough or misfiring can be cause by the following:
1.Defective spark plug.
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.


http://www.2carpros.com/forum/automotive_pictures/12900_ox_2.jpg

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Monday, March 8th, 2010 AT 12:25 AM

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