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andreashuber5

Astra high fuel consumption starting difficulty

My 2005 Vauxhall Astra with a gasoline engine has 145189 km. I've observed higher fuel consumption and difficulty starting. I suspect a defective throttle valve. Could a defective accelerator pedal module be the cause?

Summary of the thread

The conversation revolves around a 2005 Vauxhall Astra experiencing high fuel consumption and starting difficulties. The initial suspicion was a defective throttle valve, with a query about the accelerator pedal module being a potential cause. Another participant suggested checking the air intake for obstructions, which could mimic these issues. Ultimately, a professional inspection confirmed the throttle valve was defective, and the accelerator pedal module was identified as the cause, leading to a repair.

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4 comment(s)

erwinfischer1

I also drive an Astra, although a slightly different model. I experienced similar symptoms a while back. Have you checked the air intake for any obstructions? A restricted airflow could also affect the throttle position and mimic the issues you're describing.

andreashuber5 (community.author)

Thank you for your input. I have not inspected the air intake specifically. Did you find that cleaning or replacing the air filter resolved the issue in your case, or was further intervention required?

erwinfischer1

In my instance, cleaning the air filter did provide a marginal improvement, however, the underlying issue persisted. Eventually, a diagnostic check indicated a faulty throttle valve. Considering your symptoms and the potential link to the accelerator pedal module, seeking professional evaluation is advisable to avoid unnecessary component replacements.

andreashuber5 (community.author)

I appreciate the advice. I had the vehicle inspected and the throttle valve was indeed defective, as suspected. The accelerator pedal module was identified as the cause. The repair cost 205€.

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VAUXHALL

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ASTRA