Hey everyone, new to the forum so I thought I’d start the karma off on a positive note by adding this to the forum and database.
My 1996 Volvo 850 2.5 is a reliable work horse that never lets me down….unless, and here’s where it gets odd, I park it somewhere that’s not level for a while. I can leave it on the drive for 3 or 4 days and it’s fine. 1 night on a 4 inch kerb and it will not start. It will turn over and really have a good go at starting but won’t catch. Eventually I found the cause, and it’s a common thing with this car, but only common when you already know what to search for.
The Fuel Pump Controller Relay is known to go bad, and I think what happens is that it allows fuel to drain away from the engine if it’s not level. If it’s really bad it might do this wherever you park it.
Temporary workaround: If you turn the key so the dash lights come on you will hear a slight ticking, but it’s quieter than the seatbelt light relay, so buckle up first and you’ll hear it. Turn the key back off and on until you don’t hear the ticking and it will probably now start. This is also verification that a new relay will fix it.
To fix: I bought a replacement for £8 on eBay. They are tall pink relays with 130 on the top. Open the bonnet, and on the drivers side for UK or passenger for US, there is a fuse box. Open that up, remove the rubber seals around the box area and remove the 4 torx head screws. Lift the fuse box out, yank the old relay and install the new one, have some cake.
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