Volvo 940/960 » Fuel Injection

CRC Mass Air Flow Sensor Cleaner is the safe and effective alternative to "underground" methods of MAF sensor cleaning. Don't us aggressive chemicals like brake parts cleaners or carburetor cleaners on MAF sensors. These can cause serious damage to sensitive parts. Use CRC MAF Sensor Cleaner -- It's

These sealing washers are used in many places on Bosch Fuel Injection systems. They are used on the fuel filter, fuel pump, injector rail, etc.

Here's an inexpensive tester that alllows you to check individual injectors (in the Bosch LH system) are getting the proper voltage. Easily plugs into fuel injector electrical connector. Just crank the engine and watch the light. If it flashes, you've got proper voltage.

A poor running car that otherwise has a good tune is sometimes hard to diagnose. Injectors will flow fuel for many years without wear, but as the car gets over 200k miles it may be time to test them.Use water to spray around the injectors to test for a bad seal. A momentary decrease in idle speed in

The pressure regulator controls the fuel system pressure to the injectors. It is controlled by a vacuum line to the intake manifold. When the regulator is operating correctly it will maintain some residual pressure in the fuel system when the engine is shut off. When the engine is running it will mo

A fuel pump either works or it doesn’t. Be sure to fault check the wires and the relay before replacing it. A repair to the power source is far less expensive than replacing a misdiagnosed fuel pump. These pumps are the same original Bosch pumps that will last as long as the original.

Common remedy for poor idle or car that won't idle