20 Most Recent 1976 Cadillac Deville - Page 9 Questions & Answers

It is in the same box as your air filter. You have to remove the top of the box and not just the cover that covers the air filter itself.

under steering wheel to left ,if it's the motor running hot don't wait get on it northstar motors are big problems when it comes to keeping motor cool head gaskets ,and ,the water pump is a piece no well made,it's driven off the cam on the drivers side of engine.

May be a transmission problem - check for error codes (DTCs) to see if you can identify the issue.

You have inadvertently disconnected the ABS sensor connector on one of the disk brakes you have worked on.

If the gauge doesn't move, try replacing the temperature sending unit (sensor).

On this website you find fuse box diagram and description for Pontiac Boneville (2004) Pontiac Boneville 2003 2004 fuse box diagram Auto Genius

Do you know anything about automotive electrical testing ? how to read a wiring diagram ? How to use a DVOM - digital volt ohm meter ? You can find a free wiring diagram here http://www.bbbind.com/free_tsb.html The trunk release is controlled by an electronic control moduel . Trunk Release Relay Output Controls The rear integration module grounds the trunk relay when commanded ON. The rear compartment should release. This vehicle has a very complex body control system of three different computers The body control system consists of the following 3 modules: • The Dash Integration Module (DIM) • The Instrument Panel Module (IPM) • The Rear Integration Module (RIM) Each of the 3 body control modules integrate a number of functional systems under the control of a single module. Each module is connected to the Class 2 serial data circuit, many of the control functions are implemented by Class 2 messages. . Rear Integration Module (RIM) The various RIM inputs and outputs are described in the corresponding functional areas as indicated on the RIM electrical schematics. The RIM functions include the following: • Automatic level control • CIGAR relay control • Class 2 communication requiring RIM interaction • Content theft deterrent • Fuel door control • Fuel level sensor input • Heated seat control • HVAC blower control • LK/CYL relay control • Park brake relay control • Rear defog relay control • Rear park assist chime control • Retained accessory power (RAP) relay control • Reverse relay control • Transmission shift inhibit • Trunk release relay control • Various controls for the interior lamps Luggage Compartment Description and Operation (General) Rear Compartment Lid (trunk) release actuation is controlled by the following components. • Rear Compartment Lid Release Relay • Instrument Panel Module (IPM) • Rear Integration Module (RIM) • Valet Switch • Rear Compartment Lid Release Switch • Rear Compartment Lid Release Actuator Battery voltage for the coil side of the trunk release relay is supplied through the Valet switch (with the valet switch in the OFF position) by the ALDL fuse located in the Underhood Fuse (Bussed) Block. Battery voltage for the switch side of the trunk release relay is supplied by the Body fuse located in the Rear Fuse (Bussed) Block. When the rear compartment lid release switch is momentarily pressed, it provides a ground circuit for the trunk release signal of the Instrument Panel Module (IPM). When the IPM senses that the switch has been activated, it sends a Serial Data Class 2 message to the Rear Integration Module (RIM). The RIM then provides a path to ground on the F/TNK DR REL relay control circuit. The trunk release relay is then energized, and battery voltage is applied through the switch side contacts of the trunk release relay to the rear compartment lid release actuator. The actuator is connected to ground through a ground splice pack located at the left rear corner of the rear compartment, near the left tail lamp connector.

Fuel pressure regulator . plugged fuel return line . With the ignition switch ON and the fuel pump running, the fuel pressure indicated by the fuel pressure gage should be 333-376 kPa (48-55 psi). The Fuel Pressure Check determines if the fuel system is providing fuel pressure. The components involved include the fuel tank, sending unit, pump, pipes and hoses, pressure regulator, fuel rail, and injectors. Also checked is the electrical operation of the fuel pump relay. This chart requires J 34730-1A , Fuel Pressure Gauge J 37287 , Inlet and Return Fuel Line Shut-off Adapters.

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There should be a fuse (probably a 15 amp (blue) fuse, or maybe a 10 amp red fuse) under the hood in the fuse block. Find the fuse and check it. That fuse sends power to the fuel pump relay (also under the hood), so when relay is activated by the engine computer, the power is sent on to the fuel pump in the gas tank. Find and check the fuse, then see if the relay has power to it -use a voltmeter or test light. If power is there at the relay, hold your finger on the relay while someone turns key to on, not start. You should feel the relay click, meaning the engine computer has activated the relay which should send power to the gas tank. This is how you test for power to the pump when it won't do anything.

Bad battery cables or connections . Do voltage drop testing on electrical circuits . Voltage Drop Test

What about it?

Have the fuel pressure tested when this happens, it may be a worn out fuel pump.

Check and see if you have a clogged catalytic converter..may need shop to checkthat,.,usually check engine light would be on if it were that...if not prob fuel problem . Or computer issues