Question about 2002 Volvo S60
Fuel filter or fuel pump
Posted on Oct 17, 2008
It sounds like a fuel problem as opposed to an electrical fault. Start with the easiest fixes first ..
The next time the car comes to a grinding halt quickly remove the petrol filler cap and listen for air rushing into the tank. If you can hear air rushing into the tank that means a vacuum has been created inside it.
There are 2 causes of a vacuum inside the petrol tank. One is that the air-valve in the filler cap is blocked (there's usually holes in the filler cap covered by a rubber type ring) and the other is that the breather tube from the tank to atmosphere becomes blocked with dirt and debris thrown up by the roadwheels. Try driving the car with the fuel cap removed or very loose so that air can easily enter the tank. If the car still comes to a halt with the same symptoms, then there isn't a vacuum being caused within the tank.
A failing fuel pump can cause the same problems. I once owned a VW that had the symptoms you describe. The in-tank fuel pump was 'on its last legs' and when replaced the car was perfect.
A blocked fuel filter can also cause the same problems.
Here in the UK the Volvo 960 is either a straight-six 2.5 litre or 3 litre engine. I would guess that Volvos in North America share a pretty much the same mechanical layout depsite model differences. A UK 960 has two fuel pumps. One is located within the fuel tank and is accessed via an inspection plate behind the rear passenger seats (estate/station wagon models). The other fuel pump sits in a bracket underneath the car alongside the fuel filter, just aft of the front passenger seat (driver seat in the US..).
My guess is that if you went to a workshop they would opt for changing the under-car mounted fuel pump. It may be cheaper to get a workshop to diagnose the problem first and then you can do the repairs/replacement.
If it's of any use to you, I've put some photos of the fuel pumps and fuel filter on my own website - www.glennsmart.btinternet.co.uk Just choose 'Volvo 960' from the drop-down menu.
Posted on Sep 17, 2008
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Posted on Jan 02, 2017
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