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Bad Crank Sensor Symptoms

The crankshaft nexiq usb link sensor in the modern automobile engine is an integral component. When malfunctioning, the symptoms of a bad sensor are easily recognizable to the motorist and should be handled quickly to avoid being stranded and risking additional engine components.


As computer systems became more integrated into the operating of the internal combustion engine, the need for monitoring its many complex components became necessary. Crank sensors were developed using a combination of magnets and an inductive coil and are commonly mounted near the main crank pulley, flywheel or on the crankshaft itself. It is one of the most important sensors of modern internal combustion engines.

Function mb star c3

The crankshaft sensor monitors the relationship between valves and pistons in the engine to maintain the variable valve timing. It is also measures the engine's speed by calculating revolutions per minute. The crankshaft sensor is in effect a catcher in a baseball game, calling the game so the pitcher (the engine) can fire the appropriate function, or pitch,


Most crank sensors function as magnets and an inductive coil. Newer sensors have been built to operate under the Hall Effect, which produces a voltage difference across an electrical conductor to create a magnetic field. This semiconductor eliminates the need for an inductive coil and magnets. Crank sensors are also used on bicycles to supervise the position of its crankset.

Symptoms of Problems

When a crankshaft sensor has failed or is failing, certain timing problems will arise in engine function. The engine may start normally in some cases, but will cut off after a few minutes (or seconds) of operation. More than likely the engine will be unable to start at all. Since the crankshaft sensor is responsible for engine timing, the driver may experience engine backfire or irregular rpm function, if the vehicle starts at all.

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The crankshaft sensor will have to be replaced if it is malfunctioning. Consult a local auto mechanic that specializes in the particular manufacturer of vehicle being driven to secure the parts and labor in order to get the vehicle running properly. Avoid employing used parts for integral engine components as they have a greater chance of failure than newer equipment.



Display Auto Info by F01 Car HUD

F01 Car HUD

F01 car HUD head up display

This is my first time using a Car HUD, as well as my first time buying one. I did not know there was a thing called Vehicle Head Up Display before last week… a little bit embarrassing. So, I ordered a cheap F01 Car HUD immediately, and got the package today.

The packaging contained the HUD itself, along with an OBD connecting line, a small reflective film, a non-slip mat, a warranty card and a short instruction book. Shipping took about 5 or 6 days and packaging was all good when it arrived at my door.

The HUD is a sturdy and solid device that looks like a Beeper, only it is bigger in shape. The tool itself is light - weighs about 300 grams, which is around 0.6 lbs. I connected the tool on my Audi A4 via the OBD cable and put it on my board. The adhesive at the bottom is not permanent, but it is strong enough to stick the HUD upon the dashboard.

I went on a short drive, about 2,000 miles, from my house with the HUD on. The tool would show me the battery voltage and speed and give me tips for shifting gear. The display was easily visible from the drivers position and the tips were quite helpful, especially for new drivers and teen drivers.

The good:

Fair price
Very visible and crisp display
Helpful tips and does not distract from driving

The bad:

Not user-friendly enough
No batteries

More OBD2 Diagnostic tool at


Reviews on OBD365 MB Star C3

1. I just got my 299.99 dollar MB Star C3, installed the newest software and driver. Reading and erasing error codes straight away and will try to check the programming features next week. Great so far! - John Gridley

MB Star C3 Pro with Seven Cable Fit all Computer

2. Received my MB Star scanner last week, but has been too busy to review it. I have troubleshot nearly a dozen of cars with the tool and it works quite well. But it is not that great with ECU programming. Hope the technicians can improve it. By the way, very reliable supplier. I will keep working with them. - Tim

3. Really nice seller. I got my tool yesterday, but did not know how to activate the software. The customer service was patient to solve the problem. The tool was nice, too. Just tried to pull DTCs with it. It took only 3 minutes to read ABS DTCs. - Kavin

4. Ordered one A MB Star C3 diagnostic tool from OBD365 early this month. The tool arrived at my door today. Already used it to read fault codes and display live data. Have not tried the programming functions by far. - Scottie

INstalling for 2013.9 Benz Star C3/C4 Das External HDD