100% Free

No Scanner Needed

Carly logo
Prices

maryflame25

XC70 Rich Running Condition

My 2008 Volvo XC70 with a gasoline engine is running excessively rich at 94580 km. Symptoms include reduced engine power, check engine light, rough running, increased fuel consumption, and jerking during acceleration. Could a defective fuel injector be the cause?

Summary of the thread

The 2008 Volvo XC70 was experiencing a rich running condition, characterized by reduced engine power, check engine light, rough running, increased fuel consumption, and jerking during acceleration. Initially, a defective fuel injector was suspected as the cause. Suggestions included checking the oxygen sensor and inspecting the intake manifold for leaks. Ultimately, a diagnosis confirmed the defective fuel injector, and its replacement resolved the issue, restoring the vehicle's performance.

Did this summary help you solve your problem?

4 comment(s)

marvinpeters1

Sounds familiar. I had similar symptoms on my XC70. Have you checked the oxygen sensor? A faulty sensor can cause the engine to misread the air-fuel ratio. Also, inspect the intake manifold for any leaks.

maryflame25 (community.author)

Thanks. How can I verify the oxygen sensor's function? If the intake manifold were leaking, would there be other indicators besides the rich mixture, like a hissing sound?

marvinpeters1

To check the oxygen sensor, use an OBD2 scanner to read its output. A hissing sound from the intake manifold is possible, especially under acceleration. Given all your symptoms, it might be best to get a proper diagnosis at a workshop to pinpoint the failing component. It could save time and money.

maryflame25 (community.author)

The diagnosis revealed a defective fuel injector. The replacement cost, including labor, was 515€. The vehicle is now running smoothly. Thanks again for your help.

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

VOLVO

community_crosslink_rmh_model

XC70