Question about 2000 Ford Expedition
This truck has 2 sensor on front of head which one is sensor a bank 2
It's going to be the one on the left (drivers) side (picture below). Through experience I have found that due to the location of these sensors the connectors get oil in them and moisture. Sometimes just cleaning the connector clears up any diagnostic trouble codes or drivabilty problems. Hope this helps you....
Posted on Dec 10, 2012
Driver side on a Ford next to cyl #5
Now you don't necessarily have a bad sensor
because you have a code
You need to do some serious testing & a lot of it,
by some very sharp people- before you conclude
it is bad
Posted on Dec 10, 2012
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Posted on Jan 02, 2017
SOURCE: obd code p0304
P0304 is actually pointing to a misfire in cylinder 4, not a camshaft sensor problem.
There could well actually be two misfires rather than just one because Ford use a wasted spark ignition system wherein two cylinders are fired at once, one of them on its compression stroke and the other on its exhaust stroke, hence the wasted spark on the exhaust stroke.
You say it is "popping" which would lead me to believe that there is a spark issue rather than a fuel issue, because the popping sound would be the fuel igniting either in the exhaust or the intake rather than the cylinder, and this would be confirmed if you were to run the engine and then switch it off and pull the no.4 spark plug and it were to be covered in fuel.
If you were to find two plugs covered in fuel and the rest ok, then the coil pack feeding those two plugs would probably be the problem.
If only one plug were covered in fuel then either the plug or lead feeding that cylinder owuld probably be the issue.
If none of the plugs are covered in fuel, indicating a fuel problem, and you were to swap the no.4 injector with one of the other injectors, and then the fault code were to change to the cylinder into which you swapped the no.4 injector, then the injector would be the problem.
Very best regards
Posted on Jul 15, 2008
SOURCE: location of CHT sensor
It is located at the back of the passenger side cylinder head close to where the intake manifold and head meet.It will have a YE/LG and GY/RD wires to it.
Posted on May 24, 2009
It could be your lifter after so many miles the lifters may loosen causing a tapping sound. If U have any skills to remove the head cover the lifters are on top and U could tighten back down to spec.
Hope this helps
Posted on Jul 17, 2009
B1 means the sensor is located on the same bank of the engine that has the #1 cylinder. B2 is located on the opposite bank.
S1 means the sensor is located BEFORE the catalytic converter
S2 means the sensor is located AFTER the catalytic converter
You didn't say which engine you have, so I've included the diagrams of both 4 cyl and 6 cyl so you can see the banks
Posted on Oct 20, 2009
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