theoeis1

XC90 Fuel Consumption and Starting Issues

My 2003 Volvo XC90 with a gasoline engine is giving me fits. It's got 111971 km, and the fuel consumption has gone through the roof. Plus, it's a real struggle to get it started sometimes. I'm starting to think it's a defective throttle valve, possibly even the accelerator pedal module itself. Has anyone else wrestled with this problem?

A 2003 Volvo XC90 is experiencing high fuel consumption and difficulty starting. The initial suspicion was a defective throttle valve or accelerator pedal module. Suggestions included checking for air leaks and cleaning the throttle body. Ultimately, the issue was traced to the accelerator pedal module, which was replaced to resolve the problem.

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4 comment(s)

I understand your frustration. I had something similar happen with my Volvo XC90. Fuel consumption was terrible, and starting it felt like I was coaxing a stubborn mule. Have you checked for any air leaks in the intake system? Or perhaps cleaned the throttle body? Those were the first things my mechanic suggested.

Thanks for the reply! I did have a quick look for air leaks, but nothing obvious jumped out. I haven't tried cleaning the throttle body yet; that's a good shout. Was your problem eventually traced back to the throttle valve or accelerator pedal?

In my case, after a lot of diagnostics, it turned out to be the throttle position sensor. The mechanic confirmed that the throttle valve was defective. Honestly, unless you have the right diagnostic tools, I would recommend taking it to a trusted workshop. They'll be able to pinpoint the exact cause much quicker and easier.

Thanks, that's really helpful to know. I appreciate you sharing your experience! I took it to the workshop today. You were right, it was indeed the accelerator pedal module causing the issue. A new one, plus labor, came to 205€. Ouch, but at least it's sorted!

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VOLVO

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XC90