Gm Fuel Pump Connections
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The outputs that do not require relays will connect directly to the solenoid and motor via an existing GM harness connector, such as the throttle body motor, O2 sensors, IAC motor, and EVAP solenoids. Items that require relays would be the electric fuel pump and the electric fans, as the PCM VaporWorx is sold separately and the tank must be modified to accept Fuel Pump Installation in Fuel Tank Make sure to connect. the fuel pump and bucket Aeromotive You can also buy complete, readytoinstall fuel tanks with the electronic fuel pumps fitted.inside them so you don't have to fabricate the fittings and install the fuel pump in the tank yourself. Aeromotive Stealth Style is a and you need a part fast. I have heard that the stock GM pump is extremely reliable so I'm not too Other features include plugandplay connections for adding a voltage booster, such as a Kenne Bell BoostAPump, or an MSD fuel pump voltage booster. The Kenne Bell is better suited to the GM fuel system, and the MSD is better suited for boosting voltage to an external fuel pump setup. means the fuel pump is working too hard for the conditions. The pump will start heating up the fuel, progressively resulting in vapor lock during your travels. I've seen some creative installations of CYL#3.CYL#1 V8 HEI ignition wiring (© Chevrolet Div., G.M. Corp) ,CAM FUEL PUMP' \ ^ FUEL TANK Electric fuel pump installation (£ Chevrolet Div., G.M. Corp.) LOW IDLE FUEL. PUMP. REMOVAL. AND. INSTALLATION. Electric Fuel Pump NOTE: It is not necessary to raise the car for tank removal. UNDERBODY 1 . Disconnect the battery ground cable and siphon the fuel from the tank. 2. Disconnect the gauge sendingunit and pump wires at the rear harness connector. 3.Fuel Injected Vehicles 1. Relieve the fuel line pressure. Disconnect the negative battery cable. 2. Disconnect the fuel lines. Remove the fuel filter from the retainer or mounting bolt. 3. Installation is the reverse of the removal procedure. Note that the mounting location is the.same as that for the fuel pump on carbureted engines Mechanical Fuel Pump TESTING Volume Test 1. On Chevrolet produced V6 and V8 engines remove the upper bolt from the right front mounting boss.Relay 4 Fuel Pump Relay Terminal Description 85 To pin D of connector C101. 86 To ground. 30 Direct to battery voltage. 87 To 120A fuse then to the fuel pump. Cooling fans can use two relays or one, depending on the radiator fan setup. Two fans can be on one circuit that run at the same time, or the two fans can be wired to separate circuits, as with the factory version. One fan functions as a lowspeed fan; the other is a highspeed fan, which comes on in the event the engine is not Some recent carbureted engines with computer control are also.fitted with a throttleposition sensor (TPS) like that described in the fuelinjection section below. Then reattach the electrical connector and adjust, following PUMP 7 Accelerator pump from a Chevette carb is typical of the diaphragm type. the instructions in your shop manual. GM, Ford and Chrysler engines with port injection have a fuelpressure gauge attachment point, so you simply connect the gauge to this port.E Flare that end, again with a tube sleeve and tube nut, and use a 6 union to connect another length of 6 hose with straight ends. Highhorsepower engines that require a highvolume fuel supply need some special equipment. The traditional method is to use a fuel cell and one or more large, inline fuel pumps. In this case, we need.a conventional aftermarket EFI regulator. In most cases, highcapacity extruded aluminum replaces the stock fuel rails. The pressure line (or lines) feeds The pump is activated by signals from the ECM (Electronic Control Module) through fuel pump relay. Pump. REMOVAL & INSTALLATION 1 . Disconnect the negative battery cable. Raise the front of the vehicle and support it on jackstands. 2. Disconnect the fuel inlet and outlet lines at the pump and plug pump inlet line. 3. If necessary, on the V6, NOTE: On Chevrolet V6 engines, mechanical fingers or heavy grease can be used to hold pump pushrod in place during installation.The mechanical pump sucks fuel through a long line from the tank, promoting the fuel's tendency to flash.into vapor, especially on warm days. Electric Fuel Pumps The electrical pump has a higher first cost, is noisier than a mechanical pump and requires connection to the car's electrical system. It must Holley's line of competition mechanical fuel pumps for Chevrolet and Ford V6 and V8 engines is designed for maximum flow, reliability and flexibility of application. Both street and