Question about 1999 Volvo S80

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What is a crank shaft positioner sensor

It revs up and down in park and drive

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  • Volvo Master
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This is TPS sensor or IAC sensor.

Posted on May 08, 2013

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Posted on Jan 02, 2017

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Driving along, and my 1998 c230 Mercedes cuts off on me. When trying to restart, it won't make a sound. After about 45min to 2hrs it starts. why is this?


Replace cam positioner sensor and crank positioner sensor one is failing hard to tell which on the c230 just do both fast and easy

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Will not take fuel or run over 2000 rpms bucks and revs up & down


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Where does the cam position sencer located at


It's officially called a CMP Syncronizer.
There are stern warnings on the page associated with this.
CAMSHAFT POSITION (CMP) SENSOR Removal & Installation
CMP sensor is located on rear of engine, behind intake manifold. Before removing, note position of electrical connector on CMP sensor. Remove upper intake manifold. See UPPER INTAKE MANIFOLD . Disconnect CMP sensor. Remove CMP sensor screws and CMP sensor. To install, reverse removal procedure. Ensure CMP sensor electrical connector is pointing in original direction. Tighten CMP sensor to specification.
2 . Failure to use synchro positioner during installation will cause fuel injection to be out of time and may cause engine damage.
CAUTION: DO NOT rotate crankshaft when Synchro Positioner (T95T-12200-A) is positioned on CMP synchronizer. Armature tab will be damaged and synchronizer timing may be shifted. Removal
1. Position crankshaft to TDC of cylinder No. 1, on compression stroke. Note position of electrical connector on CMP sensor. 2. Disconnect negative battery cable. Unplug harness connector from CMP sensor. Remove CMP sensor screws and CMP sensor from positioner. Remove synchronizer hold-down bolt and CMP synchronizer.
Fig. 2: Exploded View Of CMP Synchronizer Assembly (Typical) Courtesy of FORD MOTOR CO.
CAUTION: DO NOT rotate crankshaft while synchronizer is removed from engine. Installation
1. Install Synchro Positioner (T95T-12200-A) on synchronizer housing. See Fig. 3 . Rotate synchronizer shaft until vane on shaft aligns with slot on synchro positioner. Rotate synchro positioner until engaged into notch in housing. Dip drive gear in engine oil.
Fig. 3: Installing Synchro Positioner On Synchronizer Assembly (Typical) Courtesy of FORD MOTOR CO.
Fig. 4: Positioning Synchronizer For Installation Courtesy of FORD MOTOR CO. 2. Rotate sychronizer assembly so that synchro positioner is 60 degrees counterclockwise of crankshaft centerline before inserting synchronizer assembly into engine. See Fig. 4 . 3. As synchronizer is inserted into engine, synchronizer will rotate. When seated, synchronizer electrical connector should be located in original position.
CAUTION: If CMP sensor electrical connector is not positioned correctly, DO NOT reposition connector by rotating synchronizer. This may cause fuel system to be out of time with the engine, causing possible engine damage or an engine misfire. Remove synchronizer and reinstall. See step 3 . 4. Install hold-down clamp and tighten bolt to specification. See TORQUE SPECIFICATIONS . Install CMP sensor to synchronizer and tighten to specification. Ensure CMP sensor electrical connector is in original position. Reconnect wiring to CMP sensor. Connect negative battery cable.
fig2explodedviewofcmpsy.gif

May 03, 2011 | 1995 Ford Explorer

1 Answer

1998 Jeep Cherokee -- car won't start. Turns over


have scanned to find problem code to get an idea of what it is. .it may either be the crank or cam sensor, check the crank sensor first. if it is bad it sends wrong timing info to pcm. therefore jeep will not start!! It is either the camshaft or crankshaft positioner. I would check the crank pos. first. Zach Cabot, AR
It is either the camshaft or crankshaft positioner. I would check the crank pos. first. Zach Cabot, AR
It is either the camshaft or crankshaft positioner. I would check the crank pos. first. Zach Cabot, AR

May 31, 2010 | 1998 Jeep Cherokee

1 Answer

My 1997 Honda Accord V6 won't stay cranked


Your speed sensor may cause other problems like not shiftig all gears, if the car acts like it is cutting of, check for proper fuel pressure, air intake firlter, spark plugs, throthle positioner sensor, idle motor.

Jul 16, 2009 | 1997 Honda Accord

3 Answers

Crankshaft position sensor for 2004 nissan sentra.


will the crank sensor cause the vehicle to shut down while running?

Nov 14, 2008 | 2004 Nissan Sentra

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