2CarPros - Car Questions & Answers

1997 Volvo 850 Repair Question


Topics covered: Check engine light, Engine, Sensor.
Mileage: No information provided.

Asked on January 17, 2008

1997 Volvo 850 CV JOINT/ GAS MILEAGE


2.3 T5 I have a very bad cv joint on passenger side. I was getting 22 mpg ave. now down to 12.8. Is this a probable cause?
Avatar Asked by ignite1444

Answer

Replied on January 17, 2008

i doubt it. this would be a first ive heard of. do you notice black soot around your tail pipe? is your check engine light on? does it flash? let us know, we'll get to the bottom of this.

Tiny Answered by mastertechtim
7 questions asked
Replied on January 19, 2008


No. The check engine light never comes on and yes there is black soot covering the inside of the tailpipe...dry not oily.

Tiny Response from ignite1444
1 question asked
Replied on January 19, 2008

my educated guess is you have a lazy oxygen sensor. your o2 sensor is staying on the lean side, so your computer tries to compensate and dumps in more fuel. have the o2 sensor checked out by your repair shop, we have scanners that can actually watch the voltages live. hope this helps

Tiny Answered by mastertechtim
7 questions asked