Question about Volvo S40

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No power on acceleration, rpm doesn't reach or over 2500, starting with no problem and idling is fine.

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  • w392 Jul 17, 2009

    I will check the fuel pressure first, thanks.

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The issue can be on the electrical or may be related to the fuel. If you wish to to the troubleshooting you may want to start with the small items such as the fuel filter if it needs replacement. You may also have the fuel pump checked especially if the car stutters. Check the pump out if they are still sending the correct fuel pressure. I am unsure if the model you have should have 43psi or 48psi. Check also the quality of the fuel. After checking the fuel pump and the filter see if there is a difference after filling up. Check also the spark plugs if they are properly connected to the engine on both ends, again if this involves stuttering when you reach 2500 or above.

If you do not feel any change in the way the car runs at idle or at lower RPM that is out of the usual, this may be an issue with the car's ECU or computer that limits you to 2500. You may want to have it checked out.

Posted on Jul 17, 2009

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If you have anymore questions feel free to email me at tnaautomotive@hotmail.com

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