Bosch Electronics - Others - Recent Questions, Troubleshooting & Support

Use timing light on flywheel fan.

if it is an automatic, try removing the cover under the flywheel to get at the bolt if such a cover is not available as in a manual I would go to a good auto tool shop and purchase a flex wand with a magnet on the end and try that there may be a small hole with a rubber plug in it in the bell housing under the flywheel that may give you access as well If nothing works after you have used a lot of imagination then you know what will have to be done --box out

See if this helps. Check an follow the wire from beginning to end? at every connection for cracks, Kinks, other wire touching at destination points. Place a continuity checker at the start of the sending unit to the end of the receiver, Wiggle, pull, on the wire at every section of it's schematic and see where? it faults. hope it help. If not then the problem is the sending unit sending to much current to the receiver.

If you can't find or get to broken end of cable, then a Worksop / Garage Job Experts needed as not a simple job to open a Closed Hood

There are a couple of possibilities, one is fuel pump another is load leveling pump, if you have one.

if it does not turn over could be several things including drained battery. spark plugs or tune up will do nothing to help it turn over.

first you need to determine whether it is a real low pressure or the sensor is lying to you idling just a slower speed oil pump is running so you can either replace oil pressure switch sensor and see if the problem goes away or you have to put in a pressure gauge to see the exact pressure the sensor is getting it could be a real or it could be the sensor is failing

Check that you have power to the rear of vehicle and check to see if you have power at that brake light switch. If you do then you might check all your grounds.

No not sapost to be buzzing

you need 30 inches 12 inches not enough you could fit anther alternator with pump on it

Mercedes dealer with registration and key.

There are diodes or a diode plate on the rear of the alternator. These are always pre-wired unless your replacing them. Give us all the info. you can on what your doing and need.

Did you get this figured out? I bought a replacement relay, but my car's system looks different than the other posts. Namely, there was no replaceable relay in the plastic box (with 4 screws on the top) that contains the control boards, that is under the bonnet, on the right side of the car near the aft part of the engine bay.

Here's the alternator test before you spend money: Start the car, then disconnect the positive batter cable from the battery. If it stays on, the alternator is fine. check your relays under the hood, located in the fuse box. Tap each one, if you get a response when you tap or wiggle a relay, change it

I takes it your car is a manual shift and if so then you need to
Replace the starter switch that is on the clutch the winds the signal to the computer to start engine.

WE need to know the engine size and the number of cylinders before we can answer that.

try to ballance yourfront tires