Test the electrical circuit ! Videos on youtube showing how . Catera ??? Cadillac ? The fuel pump is controlled by the ECM - engine computer . Fuel Pump Relay K44 LH front of the engine compartment, in the ECM housing !
GM Fuel Pump Relay Testing
look at a wiring diagram at http://www.bbbind.com/free_tsb.html Enter vehicle info. year ,make , model an engine size . Under system click on engine ,under subsystem click fuel controls . Click the search button then the blue link .The fourth diagram down is the fuel pump relay an electrical circuit . The fuel pump should come on for two seconds when the key is first turned on . The ECM will energize the relay when cranking the starter motor if it see's an input from the crankshaft position sensor . Check ignition system for spark too . (11) Fuel Pump Relay (Violet)
Swap out the fuel pump relay with another relay in the box, see if the pump runs, if not then more than likely the fuel pump is defective. Also make sure you have voltage to the fuel pump relay socket with the key on.
Click on the link for fuel pump wiring, note the fuses. Use a gage and check fuel pressure. Key on engine off, can you hear the fuel pump run for a few seconds? If not, have to check wiring circuits and fuses--grounds, possibly a fuel pump issue? Engine cranking do you have spark at the plugs, I'm just trying to decide if more than one issue? Any applicable trouble codes?
Answers & Comments
Test the electrical circuit ! Videos on youtube showing how .
Catera ??? Cadillac ? The fuel pump is controlled by the ECM - engine computer .
Fuel Pump Relay K44
LH front of the engine compartment, in the ECM housing !
GM Fuel Pump Relay Testing
look at a wiring diagram at http://www.bbbind.com/free_tsb.html Enter vehicle info. year ,make , model an engine size . Under system click on engine ,under subsystem click fuel controls . Click the search button then the blue link .The fourth diagram down is the fuel pump relay an electrical circuit . The fuel pump should come on for two seconds when the key is first turned on . The ECM will energize the relay when cranking the starter motor if it see's an input from the crankshaft position sensor . Check ignition system for spark too .
(11) Fuel Pump Relay (Violet)
Swap out the fuel pump relay with another relay in the box, see if the pump runs, if not then more than likely the fuel pump is defective. Also make sure you have voltage to the fuel pump relay socket with the key on.
Https://s10.postimg.org/3ufs1il6x/fuel_pump.jpg
Click on the link for fuel pump wiring, note the fuses. Use a gage and check fuel pressure.
Key on engine off, can you hear the fuel pump run for a few seconds? If not, have to check wiring circuits and fuses--grounds, possibly a fuel pump issue?
Engine cranking do you have spark at the plugs, I'm just trying to decide if more than one issue? Any applicable trouble codes?