Because a diesel engine does not create vacuum and the vacuum pump is necessary to operate things like the vacuum assist brakes and cruise control.
power steering pump
vacuum pump in a diesel, is a pump installed to create vacuum to assist in opreation of brakes in pickups tha have diesel engines, the brakes are same as any other pickup and use vacuum created by the ngine to operate. a diesel engine does not create vacuum, as a gasoline engine does. that is why there is a vacuum pump added to a small diesel engine on f250 the pump is belt driven, is on the driver side of engine, under the a/c compressor.
You must have a diesel. The vacuum pump is what gives you POWER BRAKES and on the newer engines it also makes the power steering work. Only a gas engine makes vacuum. A diesel engine does not make vacuum, so they install a vacuum pump.
check vacuum pump.
If you have to pump your brakes this is serious. Check the fluid level and if it is low, add fuild to the full mark. If this does not help, you need to repair you brakes immediately. You may need pads, or you may have other problems. Inspect them ASAP.
The brakes on a 97 S-10 are bled by attaching a vacuum pump to the bleeder valves and loosening the valve. The vacuum is then used to draw out air until only fluid is present.
you can gravity bleed by opening up bleed valves,pump them up using a someone to open bleeder valves when there is pressure,vacuum bleed with a vacuum pump ,but you might have to use a scan tool to open up abs solenoids to bleed brakes.
no a diesel does not produce vaacuum when running. but vehicles that require vacuum for the brakes have a vaccuum pump attached to the engine to supply the needed vaccuum
hand operated vacuum pump . hook up and and apply vacuum and open bleeder and keep applying vacuum then close bleeder. repeat x4
The vacuum canister on Cherokees of this vintage is located immediately behind the front bumper on the passenger side. You WILL have to remove the bumper to access this part. As far as the brakes are concerned, you may have loss of power brakes, but the brakes will function perfectly fine as manual brakes. Also, it may cause your heat/air conditioning to be stuck in the defrost mode.
vacuum leak 65 power brakes run off a vacuum, when you apply your brakes you stop the air leak. 65;