faulty o2 sensor

98 v70r awd man · Nov 8th, 2011, 18:57

if my o2 sensor before my cat in my 98 v70r is faulty will this decrease my performance and power

SIAMBLUE · Nov 8th, 2011, 21:40

Yes it will and your fuel consumption will be very low, also you will see Black smoke out of the exhaust where it is running too rich, you will also eventually knacker your cat as well.

Gary

TurboZutek · Nov 8th, 2011, 21:47

The cherry on the cake is that it doesn't always set a code either!

misa · Nov 9th, 2011, 22:57

If there is no code set,it could be fuel pressure regulator.

Symptoms of a bad fpr are the same like with bad o2 sensor(black smoke from the exhaust,low power & HIGH fuel consumption),except that bad fpr will not throw a code.

98 v70r awd man · Nov 10th, 2011, 12:24

well ill have the new 02 sensor fitted in a day or so and if no improvement ill try a new fpr ,thanks for tip mate

Nov 8th, 2011, 18:57	#1
98 v70r awd man Junior Member Last Online: Apr 27th, 2012 10:52 Join Date: Nov 2011 Location: dublin	faulty o2 sensor if my o2 sensor before my cat in my 98 v70r is faulty will this decrease my performance and power __________________ 96 green 850 t5 man glt, fun 95 black 850 t5 man glt , ok kooked good 97 green 850r man, beast but crashed 98 black v70r awd man , my pride and joy.

Nov 8th, 2011, 21:40	#2
SIAMBLUE Premier Member Last Online: May 29th, 2024 20:17 Join Date: Dec 2003 Location: Ilford, Essex. View Photos By: SIAMBLUE	Yes it will and your fuel consumption will be very low, also you will see Black smoke out of the exhaust where it is running too rich, you will also eventually knacker your cat as well. Gary __________________ V70 P2 facelift D5 6sp manual E4 Sport SE Ocean Race Blue pearl (2005) 97k, standard.

Nov 9th, 2011, 22:57	#4
misa misha Last Online: Aug 8th, 2023 00:46 Join Date: Jun 2009 Location: Serbia	If there is no code set,it could be fuel pressure regulator. Symptoms of a bad fpr are the same like with bad o2 sensor(black smoke from the exhaust,low power & HIGH fuel consumption),except that bad fpr will not throw a code. __________________ '97 850 2.5 20v/fully equipped/motronic 4.4/polar white wagon '91 Citroen XM 2.0 SI/130hp/mandarine red metallic/petrol+LPG

Nov 10th, 2011, 12:24	#5
98 v70r awd man Junior Member Last Online: Apr 27th, 2012 10:52 Join Date: Nov 2011 Location: dublin	well ill have the new 02 sensor fitted in a day or so and if no improvement ill try a new fpr ,thanks for tip mate __________________ 96 green 850 t5 man glt, fun 95 black 850 t5 man glt , ok kooked good 97 green 850r man, beast but crashed 98 black v70r awd man , my pride and joy.

Nov 8th, 2011, 21:47	#3
TurboZutek Premier Member Last Online: Jan 3rd, 2020 00:42 Join Date: Dec 2009 Location: NB, Canada	The cherry on the cake is that it doesn't always set a code either!

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