Engine: V8: - Injectors and Battery

Stu V8 2007 · Oct 22nd, 2019, 18:33

Car has been cutting out when first turning the key to start it, usually ok second attempt and it would run ok, so went into Volvo last week for diagnostics and they replaced two of the V8s injectors.

Battery has also been losing charge so I think needs replacing.

Today it was reluctant to start as per above, and a message came up: 'Reduced Engine Performance'.

I'm not sure if the battery is to blame, but if I replace it is there something heavy duty I should ask for or are they mostly all the same?

I'm assuming I need to get the damn codes read again (there is no engine magagement light, and the 'Reduced Engine Performance' message dissapeared when I turned the engine of and on again.

Will change battery tomorrow.

cheshired5 · Oct 22nd, 2019, 19:31

A dodgy battery will behave very differently from a healthy one so some quick tests with a multimeter will give you your answers.
A bad battery will also make the alternator work harder too and shorten its life so given the ridiculous location of the alternator on yours, you want to avoid that.
System voltage problems can lead to strange behaviour elsewhere on the car so anything is possible.

Dice and Vida is essential for keeping my comparatively normal S60 D5 running well so with an XC90 V8, you'd be wise to have similar.

Oct 22nd, 2019, 18:33	#1
Stu V8 2007 Member Last Online: Apr 10th, 2021 07:58 Join Date: Nov 2017 Location: Dorsetshire	Injectors and Battery Car has been cutting out when first turning the key to start it, usually ok second attempt and it would run ok, so went into Volvo last week for diagnostics and they replaced two of the V8s injectors. Battery has also been losing charge so I think needs replacing. Today it was reluctant to start as per above, and a message came up: 'Reduced Engine Performance'. I'm not sure if the battery is to blame, but if I replace it is there something heavy duty I should ask for or are they mostly all the same? I'm assuming I need to get the damn codes read again (there is no engine magagement light, and the 'Reduced Engine Performance' message dissapeared when I turned the engine of and on again. Will change battery tomorrow. __________________ XC90 V8 SE Sport, MY2008, Black Sapphire Metallic.

Oct 22nd, 2019, 19:31	#2
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	A dodgy battery will behave very differently from a healthy one so some quick tests with a multimeter will give you your answers. A bad battery will also make the alternator work harder too and shorten its life so given the ridiculous location of the alternator on yours, you want to avoid that. System voltage problems can lead to strange behaviour elsewhere on the car so anything is possible. Dice and Vida is essential for keeping my comparatively normal S60 D5 running well so with an XC90 V8, you'd be wise to have similar. __________________ 2002 S60 SE D5 Manual 209000 miles

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