Question about Cars & Trucks
Where is the sensor located in a 1998 GMC Sierra K1500 5.7 engine 4 WD pickup?
Posted by Anonymous on
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Posted on Jan 02, 2017
The Camshaft Position (CMP) Sensor detects the position of the camshaft in order to identifiy when piston No. 1 is on its compression stroke. The CMP sensor is used for ignition timing in the Ford DIS igntion system, but not in the EDIS igntion system. Both DIS/EDIS use the CMP signal for synchronizing the firing of sequential fuel injectors.
On the 3.0L vulcan engine, the CMP signal is generated by a single Hall-Effect magnetic switch, activated by a single "vane" spinning around by virture of a synchronized shaft which is driven by the camshaft.
The CMP sensor & synchronizer/shaft are located behind the intake manifold (i.e., back near the firewall on a Ranger) on the top of the cylinder block. If you just need to replace the sensor, it is a simple job of unplugging the electrical connector and removing the screws holding the sensor in place. Here is a sketch of the sensor to give you an idea what to look for:
Posted on Feb 27, 2009
haynes should have a manual on this car, which will show the location of the cam pos sensor. check autozone or napa
Posted on Jul 22, 2009
please go the above link and you have a video procedure for how to change the sensor.
just do it and you are done to drive your car away.
Posted on Aug 09, 2009
it sounds like you have bigger problems if your car does not crank(turn over) then your timing belt could have broken and the one piston could be hitting a valve causing it to be locked up.normally when any sensor is bad car engine still cranks it just doesn't start.
Posted on Jan 28, 2010
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Camshaft Position Sensor Circuit Malfunction
What does that mean?
This indicates that a problem was detected in the camshaft position sensor circuit. Since it says circuit, that means the problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM. Don't just replace the CPS (camshaft position sensor) and think that will definitely fix it.
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Symptoms can include:
A code P0340 could mean one or more of the following has happened:
With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
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