My cel came on while I was driving on the highway today.I got home and checked it and I got code 54.Now I have no clue what or where this sensor or plug is, and how serious is it, how do i fix it..Does anyone know....any help would be great....thanks

 

What car and engine? IIRC, OBD1 engines have the crank sensor in the distributor and OBD2 engines have a sensor near crank pulley.

 

Its a 00 ex...Any pics would help...if not some directions would be nice...thanks

 

Anyone

 

its the sensor behind the crankshaft pulley. most likely the wires got caught on alternator and possibly got unhooked.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hatchi &raquo;</TD></TR><TR><TD CLASS="quote">its the sensor behind the crankshaft pulley. most likely the wires got caught on alternator and possibly got unhooked. </TD></TR></TABLE>

Or the harness coming off the sensor is getting chewed up by one of the belts. Done a timing belt change lately?

 

As a matter of fact I did..I'll go check it out and let everyone know..thats for your help guys...

 

If that's not it, check the plug right below your intake manifold on the alternator side.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by clm &raquo;</TD></TR><TR><TD CLASS="quote">What car and engine? IIRC, OBD1 engines have the crank sensor in the distributor and OBD2 engines have a sensor near crank pulley.</TD></TR></TABLE>

This is incorrect.

All 92-00 Civic's have the CKP (crank position) sensor inside the distrbutor. When OBD2 was introduced, the CKF (crank fluctuation) sensor made its debut - which is located down by the oil pump.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by clm &raquo;</TD></TR><TR><TD CLASS="quote">What car and engine? IIRC, OBD1 engines have the crank sensor in the distributor and OBD2 engines have a sensor near crank pulley.</TD></TR></TABLE>

OBD1 does not use a crank sensor, it uses a CAM sensor in the distributor. On the OBD2 motors the crank sensor should be directly behind the crank pulley.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">

This is incorrect.

All 92-00 Civic's have the CKP (crank position) sensor inside the distrbutor. When OBD2 was introduced, the CKF (crank fluctuation) sensor made its debut - which is located down by the oil pump.</TD></TR></TABLE>

You can't have a crank sensor in the distributor. The distributor runs off of the camshaft, not the crank, therefore it is a CAM sensor.

 

Lets go over the acronyms, shall we:

TDC = top dead center
CYL = cylinder position (of #1)
CKP = CRANK position

If you believe that whatever drives the sensor is what it should be called, then what would you name the other 2 sensors inside the distributor? They certainly aren't directly driven by any of the pistons.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">Lets go over the acronyms, shall we:

TDC = top dead center
CYL = cylinder position (of #1)
CKP = CRANK position

If you believe that whatever drives the sensor is what it should be called, then what would you name the other 2 sensors inside the distributor? They certainly aren't directly driven by any of the pistons.</TD></TR></TABLE>

Well gee, it seems to me that the exictor ring that the magnetic pickup reads from is on the cam. I don't know who/when some one decided to call that a crank sensor but ASE, NATEF, FORD, Lincoln, Mercury, BMW, Mercedes, and last but not least Porsche all seem to think that since it is reading CAM POSITION that maybe it is a CAM POSITION SENSOR(CMP).

 

Well gee, since there are two other excitor rings sitting on the same shaft spinning in unison with the CMP sensor, what are they called? CMP2 and CMP3??

They are named for the information they give. When each piston passes through TDC, a pulse is generated. Since this is a sequential fuel injected system, we also need to know where #1 piston is, hence the CYL sensor. Dual-point fuel injected systems lacked the CYL sensor because it wasn't a sequential system.

 

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hatchi &raquo;</TD></TR><TR><TD CLASS="quote">its the sensor behind the crankshaft pulley. most likely the wires got caught on alternator and possibly got unhooked. </TD></TR></TABLE>

he was right for me except the belt was cutting in to the wire loom and sliced the wires..fixed now

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">Well gee, since there are two other excitor rings sitting on the same shaft spinning in unison with the CMP sensor, what are they called? CMP2 and CMP3??

They are named for the information they give. When each piston passes through TDC, a pulse is generated. Since this is a sequential fuel injected system, we also need to know where #1 piston is, hence the CYL sensor. Dual-point fuel injected systems lacked the CYL sensor because it wasn't a sequential system.</TD></TR></TABLE>
Well that just about owns the other guy and ends this thread.