When did Mercedes Benz stop making the M104 engine?
The Mercedes-Benz M104 is a straight-6 automobile engine produced from 1989 through 1999. It has a double overhead cam design with 4 valves per cylinder. It replaced the M103 and was replaced by the M112 V6 starting in 1997. The M104 continued in production until 1999 where its last use by Mercedes-Benz was in the W140 chassis.
What happens if the crank on a Mercedes Benz goes bad?
Symptoms of a defective crankshaft position sensor on a Mercedes-Benz. Failed crankshaft position sensor can also impact the idling, the acceleration, or even your transmission shifting. In some cases, it can cause your transmission to go into limp mode. You may also notice an increase in engine vibrations.
Is the Mercedes-Benz crankshaft position sensor problem?
So you can start digging using that info and see what you think. Lots of cars including the Mercedes-Benz are known for having crankshaft position sensor problems. However, when failure of this component becomes suspected an automotive scan tool that reads the data stream is the easiest way to uncover the issue.
What causes a Mercedes Benz engine to not start?
Engine Cranks but no Start, Dies, Stalls, or Backfires. A failed crankshaft position sensor can cause your engine to stall or not start at all. Your Mercedes-Benz may start and run for a short time, or until it gets warm and then it dies.
What’s the problem with the Mercedes Benz M104?
One problem with the M104 is that corrosion develops under the coating on both the inside and outside of the valve cover. The coating on the valve cover is something similar to powder coating. I’ve been told that this coating was added to aid in sound deadening on the top of the engine.
Why is the crank sensor on my Mercedes not working?
The crank sensor is not detecting the rotation of the crankshaft and therefore isn’t firing the ignition system. I’ve seen this failure on all different types of cars, but the Germans are known for their superior engineering and I was a little surprised the crank sensor had failed on this 3.2 L V-6 engine with only 42,000 miles on it.
Why is my Mercedes Benz W210 running rough?
Many times, a lean running condition can be traced back to a cracked or torn boot in the system. A good quick way to check the overall health of the system is to take the oil filler cap off with the engine running. If the system is in good shape, the idle of the engine should drop and the car will run rougher.
What was the last time a Mercedes engine cranked?
All of the sudden it would crank around for 20 seconds before it fired up. The day before the complete failure of the Mercedes-Benz crank sensor the car cranked for almost a minute before it started. This became the last time the engine would fire up.
What kind of engine does a 1993 W124 have?
The pages in this document have the Diagnostic Trouble Codes (DTC’s) for the following models, all of which have M104 inline-6-cylinder engines with HFM-SFI (HFM Sequential Fuel Injection): 1993 300E, 300CE, 300TE(2.8L & 3.2L M104 engines) – sedan, coupe, cabriolet, & wagon
What’s the bore spacing on a Mercedes M104?
The bore spacing on all M104 engines is the same as the M103 engine at 97 mm. As Mercedes needed a compact 6-cylinder for their Vito, they agreed with Volkswagen to use their VR6 engine, which they then designated M104.900.
What’s the compression ratio on a Mercedes Benz M104?
For the 3.2 L (3,199 cc), the compression ratio is the same 10.0:1 on all W210, R129, and W140 but it did differ from 9.2:1 to 10.0:1 on W124 (M104.992). There were 3.4 L conversions done to the 3.0 L M104.980 by AMG, prior to their formal cooperation with Daimler Benz.
The Mercedes-Benz M104 is a straight-6 automobile engine produced from 1989 through 1999. It has a double overhead cam design with 4 valves per cylinder. It replaced the M103 and was replaced by the M112 V6 starting in 1997. The M104 continued in production until 1999 where its last use by Mercedes-Benz was in the W140 chassis.
The bore spacing on all M104 engines is the same as the M103 engine at 97 mm. As Mercedes needed a compact 6-cylinder for their Vito, they agreed with Volkswagen to use their VR6 engine, which they then designated M104.900.
For the 3.2 L (3,199 cc), the compression ratio is the same 10.0:1 on all W210, R129, and W140 but it did differ from 9.2:1 to 10.0:1 on W124 (M104.992). There were 3.4 L conversions done to the 3.0 L M104.980 by AMG, prior to their formal cooperation with Daimler Benz.
What is the compression ratio of a M104 engine?
Bore is 89.9 mm (3.54 in) and stroke is 84 mm (3.31 in). On all 24 valve M104 engines Intake valves are 35 mm (1.4 in) and the exhaust valves are 31 mm (1.2 in). The Compression ratio is the same 10.0:1 on all W210, R129,and W140 but it did differ from 9.2:1 to 10.0:1 on W124 (M104.992).
What is the bore and stroke of a M104?
The M103 and M104.98x were later replaced by the 2.8-litre and 3.2-litre versions of the M104. Bore is 88.5 mm (3.48 in) and stroke is 80.2 mm (3.16 in) with a compression ratio of 10:1.