96 960 turns over but car wont start. just replaced the fuel pump but that didnt solve it. the next day when the temp reached over 100 degrees in the car, the same thing occured. turns over but doesnt seem to get gas. is there some sending unit or sensor that could control the pump and that could fail due to heat?
Country: United StatesMake: VolvoModel: 960Year: 1996Engine: 6
fuel pump for $800 but that only worked for 1 day...as soon as the car sat out in the sun for 8 hours it would not start again...
Hello and welcome
There are two concern here: main relay and the fuel pump relay.
The main relay is located in the fuse box under the hood on the driver's side.
The fuel pump relay is located inside the vehicle between the driver's side door and the dash.
The vehicle’s computer activates the main relay (2/32) when the ignition is switched ON. At the same time the fuel pump relay (2/23) is activated for one second to enable the fuel pump (6/33) to build up pressure. When the relays are old the silver solder inside tend to be dry rotted and break the continuity. You have two options here: fix the solder inside the relay by re-solder the broken circuit or purchase the new relays from the dealer.
Let me know if my advice helped you out.
When is the
When the vehicle is under the sun for 6 hours, the solder inside the relays just break apart. When vehicle cools down the solder bond back together.
thank you so much ...we will check it out.
the relays checked out ok but we replaced them anyway. just in case. then they went back and inspected the fuel pump installation. there was a seal or O ring in the system that may have allowed the line to drain back or leak. it was reducing or eliminating the flow to the engine. its been fixed now for a couple of weeks so whatever they did worked. I appreciate the reference to the relays. I have had other issues with electrical that only showed up in very hot weather.
I've been working on Import and European vehicles for 15 years. Diagnostic is my specialty.