Common questions

Why are the cam and crank sensors out of sync?

Why are the cam and crank sensors out of sync?

The independent mechanic is correct. The cam and crank sensors must be synced exactly. It doesn’t matter if the belt is made of rubber. It’s a reinforced rubber belt so it can’t stretch to compensate for the mistiming.

Why is the camshaft out of sync on my Chrysler 300M?

They are out of sync and suggest that I should bring back to the dealer who replaced the timing belt. When I brought the car to the dealer, they told me that chrysler 300m 2004 tolerates up to 12 degrees difference so the cam and crankshaft are not out of sync. Nothing to do with the timing belt that they installed.

Why is my p0016 Cam sync signal not working?

P0016 cam sync signal can be caused by an intermittant cam signal or the belt is installed wrong. Checking the fuel trim data can support the suspicion of the belt being out of time, the bank that is off will show +10% or more greater fuel trim than the other side. This may be why they believe the oxygen sensor needs to be replaced.

What happens when one of the CAMS is off?

If one of the cams is off by one tooth the driver will notice a performance issue. If the left cam is off by one tooth you’ll get a check engine light. During the 5 days the car has been at the shop I hope they took the time to check if the timing belt was installed correctly.

What happens if you lose the cam signal while cranking?

Loss of the cam signal while cranking can cause the Cruise light to come on, as well, and set numerous DTCs for the ignition primary circuits, the crank sensor and the ASD Relay. Excessive coil dwell can even blow fuses.

Do you need a crank signal to start a Chrysler engine?

For a Chrysler engine to start, the PCM must receive a good signal from both the CKP and CMP sensors. Once the engine is running, the cam signal is no longer needed for operation on vehicles built after 1996. However, the PCM needs the crank signal to diagnose a potential problem with the cam signal, and vice versa.

When does the cam signal no longer need to be in sync?

A scan tool can report on the presence of the CMP and CKP signals, and whether they’re in sync. For a Chrysler engine to start, the PCM must receive a good signal from both the CKP and CMP sensors. Once the engine is running, the cam signal is no longer needed for operation on vehicles built after 1996.

How does the PCM detect the camshaft position?

The input to the PCM occurs on a 5-volt output reference circuit. The CMP sensor operates in the same manner as the CKP sensor, except that with the CMP sensor, there are only two edges to detect. The PCM identifies camshaft position by registering the change from 5 to 0 volts or 0 to 5 volts, as signaled by the cam sensor.

What should I do if my crank sensor fails?

When the crank sensor fails, your Dodge pickup (van or SUV) will crank but not start. Thankfully, testing the crankshaft position sensor doesn’t require expensive diagnostic tools since it can be accurately tested with a multimeter.

Why is my p0016 camshaft out of sync?

Perhaps the belt is off so much the spark plugs are becoming fouled. P0016 cam sync signal can be caused by an intermittant cam signal or the belt is installed wrong. Checking the fuel trim data can support the suspicion of the belt being out of time, the bank that is off will show +10% or more greater fuel trim than the other side.

The independent mechanic is correct. The cam and crank sensors must be synced exactly. It doesn’t matter if the belt is made of rubber. It’s a reinforced rubber belt so it can’t stretch to compensate for the mistiming.

They are out of sync and suggest that I should bring back to the dealer who replaced the timing belt. When I brought the car to the dealer, they told me that chrysler 300m 2004 tolerates up to 12 degrees difference so the cam and crankshaft are not out of sync. Nothing to do with the timing belt that they installed.

Perhaps the belt is off so much the spark plugs are becoming fouled. P0016 cam sync signal can be caused by an intermittant cam signal or the belt is installed wrong. Checking the fuel trim data can support the suspicion of the belt being out of time, the bank that is off will show +10% or more greater fuel trim than the other side.

What to do if your crankshaft is out of sync?

The ignition timing can be compensated for by simply rotating the distributor as the chain and gears wear…Even with the cam timing retarded, these engines seldom have any drivability problems…

Loss of the cam signal while cranking can cause the Cruise light to come on, as well, and set numerous DTCs for the ignition primary circuits, the crank sensor and the ASD Relay. Excessive coil dwell can even blow fuses.

For a Chrysler engine to start, the PCM must receive a good signal from both the CKP and CMP sensors. Once the engine is running, the cam signal is no longer needed for operation on vehicles built after 1996. However, the PCM needs the crank signal to diagnose a potential problem with the cam signal, and vice versa.

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Ruth Doyle