20 Most Recent 1993 Volvo 940 - Page 8 Questions & Answers

Too low octane fuel?

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If the speedometer and odometer are not working the problem is usually lack of signal from the transmission speed sensor.But if the cruise control works and the speedometer does not, my guess would be a problem inside the cluster.

Duplicate question.

Sounds like the fuel filter is dirty... When have you replaced it last? Possible that the pump is bad but I would start with the filter.

1. maybe The fuel pump controller failed.

Does this happen right after you start the car or does the car have to heat up first before it starts happening?

No, no power at fuse 4 means that the relay is left unpowered so it no longer works even if it's perfectly fine. And that relay is triggered only when a bulb is worn out so if the bulbs and the entire circuit including the grounds are good it can't be it.
You will need to remove the fuse holder and find out why the fuse isn't powered.

have you checked your oil if it looks like gravey on the dip stick or the oil fill cap could be a blown head gasket stick something under the car to show a leak like cat litter park over top of it and see if you have a leak over night dont try this if its going to rain of course