2008 Saturn Vue XE 2.4L fuel pump relay location?

Question

2008 Saturn Vue XE 2.4L fuel pump relay location?

Answer 1

If the engine refuses to crank then the problem isn't very likely to be a fuel pump. All the pump does is provide fuel pressure for the engine to use when it's cranking. If it's not cranking then it's probably (in your case) a 20 amp fuse that powers the ECU (computer). Dead gauges and no start command all sound like the ECU to me.



Drove a Chevy S10 pickup. One night on the highway (during one of our worst snow storms in 60 years) the engine cut off and all the gauges went to zero. I coasted to the side of the road and waited for a tow truck. The next day I began looking for the problem. The main 20 amp fuse that controlled the ECU also powered the fuel pump. My pump was failing, and it caused the fuse to blow. It was drawing excessive current. When I replaced the fuse the truck started but soon died when the new fuse blew out. It became clear it was the fuel pump killing the fuse. So I replaced the pump and all was fine again.



THAT doesn't mean your problem is the fuel pump - I haven't fully diagnosed your vehicle yet. And living so far away it's going to be really difficult for any of us to diagnose it for you. You'll have to get under the hood and into the fuse panels and figure out exactly what is the problem on YOUR vehicle. I cited my example because of the similarity of the gauges going blank. My starter relay was not controlled by the ECU so I don't know if that's similar or different from your problem, but my first suspicion (in your case) is that the ECU has been shut down. You need to determine IF that's the case, and if so - WHY!



Good luck.

˚J˚

˘

Answer 2

2003 Saturn Vue Fuel Pump

Answer 3

http://autorepair.about.com/

Answer 4

jl

Answer 5

The fuel pump and starter among other engine control items are controlled by the ECM which in turn is also controlled by the BCM...Body Control Module...via power or signals from the ignition switch. Do the injectors click or fire when cranking? Do you get spark? those may show an ECM or powertrain control relay issue if not.



I would perhaps start by testing for power at the starter relay...coil side... which may show if the ECM or BCM has a problem. And test for power out at the ignition switch...white/black wire to BCM..for the starter circuit. GM has had a lot of issues with them so that might be the main problem or an issue for starting. The starting circuit also relies on a Neutral Safety switch or Clutch switch ground path to enable starting so long as the shifter is in Park/Neutral or clutch pedal is depressed.If that path is not working...bad wiring or switch..., then the ECM will not power the starter relay.



If you have some testing skills and tools, then test for power at the starter relay socket that corresponds to terminal 86 of the relay...purple/white tracer wire. That wire/terminal gets power signal from the ECM via BCM when the key is turned to Start position which closes the coil side of the relay via a ground wire...that in turn closes the contact side of the relay which gets power from a 20 amp fuse and then sends power to operate the starter solenoid.



Have a helper turn ignition switch to Start and test for power at terminal 86...if you get no power, then the ECM is not sending a signal...which could also be a BCM issue or ignition switch issue...or Neutral Safety switch issue. If you do get power at 86, then check for a loose or bad ground wire from the relay...terminal 85. If you get power and ground, then test for power at terminal 30...if not then check for blown fuse, bad wiring, etc..



There is also a Powertrain Relay in the fuse box under the hood which controls many engine control features such as coils, injectors, fuel pump, etc... and is controlled by the ECM. Possibly that relay is bad as well ...or not getting a signal from the ECM....which would prevent the pump and starter among other things from working. Check if you have power at coils or injectors with key on ...if not ,then the powertrain relay is suspect. See page 5-101 in owners manual for that relay location....labelled PWR/TRN RELAY

http://www.vadengmpp.com/owners-manual/saturn/2008-Saturn-Vue.pdf



The Fuel Pump Flow Control Module is located in the trunk area if you need to test that...info below. No pump relay in the circuit.

http://arrc.ebscohost.com/searches?car_uuid=1440281&fa_uuid=d8c95920-aec6-012a-3b82-f9a2316539f8&filters%5Bservice_information_type_path_facet%5D=root%2Fmrt%2Fsit%2Frepair&keywords=fuel+pump+module+



Wiring diagrams ...listed under Engine Controls ...or Starting circuit.

http://arrc.ebscohost.com/searches?car_uuid=1440281&filters%5Bservice_information_type_path_facet%5D=root%2Fmrt%2Fsit%2Fp5_diagrams&filters%5Bsystems_component_path_facet%5D=root%2Fmrt%2Fssc%2Fp5_engine_controls%2Fengine_controls_circuit%2Fengine_controls_engine_controls_circuit_1_of_5