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fuel fillter may be blocked fuel relay switch
inside passenger side
Starter Relay Isuzu Trooper (Diesel Engine) located in fuse box (engine room), grey color. They have 4 relay (Power Windows-black, AC-black, Engine/Alternator-blue, and Starter-diesel engine-grey)
The electric fuel lift pump relay switch, on your root no 1.9 diesel engine, can be found on the firewall of the engine compartment. The relay switch is on the drivers side of the firewall.
Passenger side rear of engine bay
The relay is behind the intake manifold near the firewall.
The location of the cooling fan relay on a Vauxhall Corsa is under the dash. It is in the relay box on the driver's side.
The heater fan relay for a 1993 Silverado 4x4 6.5 turbo diesel can be found using the engine diagram. The engine diagram will be provided by the car manufacturer upon inquiry.
On the engine compartment side immediately next to the battery
Could be bad glow plugs.
I have the same model. It is behind the right hand headlamp as you face the engine.
its on the passenger side of the engine compartment under the wiper pannel. its deep in becoz of the body design. you'l see a relay box then you have to identify it somehow