Question about 1999 Mercury Villager

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Can you by pass a service engine light soon an make it go out

My ckp sensor is bad can i by pass it and make the light go out

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  • doros75 Dec 01, 2008

    Your Info was verry helpful. How do I by pass a sensor

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Any light or switch can be bypassed, but when you go to get the vehicle inspected and they put it on their machine its going to fail. Why not just find out whats causing the problem and fix it.

Posted on Dec 01, 2008

  • James Tepfenhart
    James Tepfenhart Dec 02, 2008

    remember I said any light or switch can be bypassed not a sensor. If you want the light to go out you can bypass the light, and make it go out. the sensors were made to not be bypassed. You would have to learn a lot about electrical engineering, and wiring. I could do this I don't know about the average Joe. You would need to figure out what makes the sensor look for what its doing and then loop it out or take it out and not just anyone can do that without setting off a lot of other sensors. Like I said, its easier to find out what sensor is going off and fix it.



    Do you know what sensor is bad, or going off? Your post just says ckp sensor I don't know what that is. can you explain.



    Also, most auto part stores will put your car on a computer for free now and tell you what sensors are bad. Just a thought.

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I have a 1998 Ford Windstar with a 3.8 liter engine. Where is the crankshaft sensor


The crankshaft position (CKP) sensor on the 1998 Windstar with 3.8L is located near the crankshaft pulley on the front cover. There is a shield mounted over the CKP sensor that you'll need to remove to access the sensor.

Would you care to share why you suspect the CKP sensor is bad? Typically with Fords a bad CKP will cause a no-start condition due to no spark, but you'll still hove good fuel pressure.

Nov 26, 2016 | 1998 Ford Windstar

1 Answer

How to change crankshaft sensor on a 2001 cad catiera


Its on the side of the block firewall side ... REMOVAL Numbers in text in parenthesis correspond to numbered components in image. Disconnect the wiring harness (1) from the Crankshaft Position (CKP) sensor pigtail. Securely attach a scrap piece of wire about 36 inches long to the CKP sensor pigtail. Later, this piece will be used as a pull wire to guide the new sensor pigtail back through the same routing. Raise and support the vehicle. Remove the oil filter and capture any lost engine oil in a container. Loosen the oil cooler lines at the engine block. Back out the fittings far enough in order to gain sufficient clearance for the sensor pigtail connector to pass between the oil cooler lines and the side of the engine block. Remove the fastening bolt for the CKP sensor (1). Remove the CKP sensor and the O-ring seal from the engine block. Remove the CKP sensor pigtail. Observe the routing of the pigtail. Gently pull the CKP sensor pigtail down through the routing path and out. Guide the pigtail connector along the top of the oil cooler lines around to the side of the engine block. Pass the connector between the lines and the block at the point of the widest gap. Stop when the pull wire is exposed at both ends of the routing path. Disconnect the sensor from the pull wire. INSTALLATION Securely attach the CKP sensor pigtail to the lower end of the pull wire. Pass the pigtail connector between the oil cooler lines and the engine block. Using the pull wire as a guide, pull the sensor pigtail along the top of the oil cooler lines and around to the rear of the engine. Use the pull wire to pull the pigtail into position. Disconnect the pull wire from the sensor pigtail. Connect the sensor pigtail to the harness connector. Thoroughly clean the mating surfaces of the CKP sensor and the engine block. Install the CKP sensor with a new O-ring seal into the engine block. Install the fastening bolt (1) for the CKP sensor. Check the harness for proper routing. Make sure that the wiring cannot come in contact with the exhaust manifold. Tighten the oil cooler lines at the engine block. Install the oil filter. Lower the vehicle. Recheck the engine oil level.

Jun 22, 2016 | 2001 Cadillac Catera

1 Answer

Was getting gas & spark & now no spark on any plugs


Crankshaft position sensor , possibly !
Crankshaft Position (CKP) Sensor
The crankshaft position (CKP) sensor is a three wire sensor based on the magneto resistive principle. A magneto resistive sensor uses two magnetic pickups between a permanent magnet. As an element such as a reluctor wheel passes the magnets the resulting change in the magnetic field is used by the sensor electronics to produce a digital output pulse. The PCM supplies a 12-volt, low reference, and signal circuit to the CKP sensor. The sensor returns a digital ON/OFF pulse 24 times per crankshaft revolution.
There are a lot of videos on youtube on testing crankshaft position sensors an Cam sensors !
There

Dec 18, 2015 | 2004 Chevrolet Tahoe

1 Answer

94 jeep has no spark at spark plug


94 GC ZJ body.
which engine option?
says you have no spark
so you read the fsm. on that.
on spark an fueling and the ASD relay.
no gas car runs with no spark and jeep cuts fuel if no spark is MONITORED as true, by ECU.

what a shop does,
is scan it , if no scan tool
he, uses one of the other 2 ways scan,called the blinking light deal.
i crank for 5seconds, and see if it stores, code, 11 or others.
click ZJ
click emmission
see chapter 25 on how to do flash CEL check engine tests.
the ECU will tell you if crank, cam senors are dead or they they are not dead but spark is.
if the ecu see any of those 3 errors, it cuts the ASD relay in 3seconds.


http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

it take 2 people to do this.
person one keys start. and sees ASD close for 2seconds.
you key fast and person looks for spark
if no spark that means the ASD didnt close
1: if cam and crank DTCs didnt happen then its spark bad.
2: cam/and crank sensor pass. then no spark that means
the ignitor is dead or coil.
check spark at coil not spark plugs.... for better way.

why people get so confused here is that there is only 2 seconds
to see spark..
let me give a prime example here: (shows the ropes)
person 2 saw spark for 2 seconds, but the ECU saw the CKP crank sensor misfiring 1 out of 10 times. the ECU considers this bad
and cuts the ASD , killing ALL, and setting CKP dtc error
fix bad CKP.
see?
all 3 tests must pass or the ECU will cut the ASD.
the asd kills spark and fuel.
not just fuel.
tricky yes, but no crash and burn like seen on TV.

im not sure but this ECU might store all DTCs found cranking
some cars dont. store bad spark. only CKP and CMP bad.
the ECU does see the spark singles bouncing back from the ignition coil primary, if missing it cuts ALL>


Mar 01, 2014 | Jeep Grand Cherokee Cars & Trucks

1 Answer

Honda civic ferio 2002. when driving at heavy traffic checklight appears and some times the engine stops. It restarts but the checklight does not dissapear. After scanning they refer the problem is in the...


the check light glows at ever engine, stall, below about 300 rpm

the engine stalls and the CEL glows, this is 100% normal and is the same deal key on, no started. it only means you have power to the ECU/PCM and is basically happy (rudimentary self tests pass)

there many are reasons (0ver 50 ) to cause a stall.

but of the check light glows running and over 800rpm

800 RPM (got a dash tachometer. next time see what i does)

if the CEL glows engine running that is the warning that there are

errors. not reporting the actual DTCs here, is a big issue.

each DTC has specific cause. 335? DTC?

P0340, 355, 336

and RPM dead cranking,

the ECU will infact set DTC for CKP pulse, 1 in 10 missing

it does that and you can be sure its not fibbing.



on many cars, (on engine option (size) stated, so....????)

1.7L or 2.0L? (auto or manual tranny)

the car dies the instant you loose the CKP, the crank sensor

but not all. on dizzy cars, (distributor) it runs with a cam sensor good.

but id bet yours needs the CKP to run.

if your DTC error decodes to bad CKP then you can believe that.

this assumes you did not lose, 12vdc electr. power to the EFI system.

or the wires are damage to any ckp or cmp sensor.



again, post the DTCs?

if confused or are a real serious DIY (most arent) go to

alldata.com and look, look up your DTC and read the reasons.

they are clear.



i just looked on line, this car even has a CKP learning procedure

do not knee jerk sway any sensor, read the FSM

see the tests to be sure its bad,

see the Vref test at the sensor, if that is bad, the sensor can no work.

eg: 336

Engine running, and the PCM detected the Crankshaft Position (CKP) Sensor \'A\' signal was missing for a short period of time. Note: This trouble code is usually caused by an intermittent fault. Possible Causes:



  • * CKP Sensor \'A\' signal circuit is open or shorted to ground


  • * CKP Sensor \'A\' signal circuit shorted to VREF or system power


  • * CKP Sensor \'A\' is damaged or has failed


  • * PCM has failed


try pulling it cleaning the connector and putting it back, (at the least)





alldata.com, or get a real FSM for #1 top, support. from Honda or helm.

Dec 14, 2013 | Honda Civic Cars & Trucks

1 Answer

Po336 crankshaft position sensor A range / performance


Trouble Code: P0134

HO2S-11 (Bank 1 Sensor 1) No Activity Detected

Trouble Code Conditions: Engine started, engine running in closed loop at a speed over 3 mph for more than 2 minutes, and the PCM detected the HO2S signal stroke rationality was more than the threshold value (0.250 volt) during the Heated Oxygen Sensor Monitor test.

Possible Causes:


HO2S signal circuit is open or shorted to ground.HO2S has deteriorated, is contaminated or has failed.PCM has failed.YOUR HO2S SENSOR IS BAD,IT COST 80.00,USE EXACT FIT PART.EASY TO REMOVE,DISCONNECT ELECTRICAL CONNECTOR,GET WRENCH AND REMOVE.5 MINUTES TO DO.Trouble Code: P0336

Crankshaft Position Sensor Performance

Trouble Code Conditions: Engine running and the PCM detected the number of CKP sensor signals counted (between the reference mark gap). did not equal the Actual number of available teeth (i.e., the CKP signals. were out or the normal window" of operation with the CMP sensor. signals okay).

Possible Causes:


CKP sensor signal circuit connections loose (intermittent fault).CKP sensor wiring harness has a connection fault (intermittent).CKP to Target Wheel "air gap" is incorrect.CKP sensor is damaged or has failed.Must remove to see.Trouble Code: P0440

EVAP System Malfunction

Trouble Code Conditions: Engine started, ECT sensor signal less than158?F at startup, IAT sensor signal more than 9.5?F, system voltage over 10.0 volts engine runtime 15-20 minutes at cruise speed, then returned to idle speed, VSS indicating 0 mph, load value 2.2 ms, canister load factor less than 4.0, fuel tank pressure less than 0.5" Hg, then after the Idle Control system and Fuel Trim had stabilized, the PCM detected a fuel vapor leak (as small as 0.040") in the EVAP system during the EVAP Leak Test.

Possible Causes:


Fuel filler cap damaged, cross-threaded or loosely installed.Small hoses or cuts present in the EVAP vapor hoses/lines.EVAP purge valve is damaged or has failed.Here you are the symptons.

Jan 17, 2013 | 1998 Kia Sephia

1 Answer

Crank sensor


Print


Location

Specific to:
Ford Taurus 2008-2009
Mercury Sable 2008-2009


0996b43f80e43304.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Crankshaft Position (CKP) sensor (7)


Operation

Specific to:
Ford Taurus 2008-2009
Mercury Sable 2008-2009
The Crankshaft Position (CKP) Sensor is a permanent magnet output coil device that monitors the speed and position of the crankshaft. A reluctor is attached directly to the crankshaft, and is used to generate a constant signal as it passes the CKP sensor magnetic coil. The CKP Sensor utilizes system voltage (12 volts DC), or reference voltage (5 volts DC) to generate a digital output signal to the PCM that is based upon a 0.5 volt AC reference. The alternating magnetic field is used by the sensor output electronics to produce a digital pulse. The CKP sensor returns a digital ON/OFF signal pulse during each revolution of the crankshaft, with a momentary signal interrupt for the top dead center (TDC) position of the #1 cylinder. The Pulse Width Modulation pattern is used by the Powertrain Control Module (PCM) to calculate ignition timing, fuel injector timing, misfire diagnostics, and the tachometer display

Jun 20, 2012 | 2008 Ford Taurus X

1 Answer

What is code P1351


Dec 30, 2011 | 2003 GMC Yukon Denali

1 Answer

Replaced camshaft and crankshaft position sensors in my 2005 altima also the o2 seneor car still will not run. error code 335 What else could be the problem?


DTC P0335 - Crankshaft Position Sensor A Circuit Malfunction
The crankshaft position sensor (CKP) measures crankshaft location and relays this information to the PCM (Powertrain Control Module). Depending on the vehicle, the PCM uses this crankshaft position information to time the spark properly or on some systems it is only for misfire detection and does not control spark timing. The CKP sensor is stationary and works in harmony with a reluctor ring (or toothed ring) that is attached to the crankshaft. As this reluctor ring passes in front of the CKP sensor, the magnetic field created by the CKP sensor is interrupted and this creates a square wave voltage signal that the PCM interprets as crankshaft position. If the PCM detects that there are no crankshaft pulses or if it sees a problem with the pulses on the output circuit, P0335 will set.

A P0335 "check engine light" code could be caused by:
Damaged CKP sensor connector
Damaged reluctor ring (missing teeth or not turning due to sheared-off keyway)
Sensor output open
Sensor output shorted to ground
Sensor output shorted to voltage
Failed crank sensor
Broken timing belt
Failed PCM

If you need additional details about test and solutions, just contact us in the Code Link.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer. Thank you for using Fixya, and have a nice day.

Jose.

Oct 21, 2011 | 2005 Nissan Altima

1 Answer

Engin light is on when i check it by computer it gives me error P1336 [25,10,13,36] , please refer to relevant terchnical manual


The crankshaft position (CKP) system variation learn feature is used to calculate reference period errors caused by slight tolerance variations in the crankshaft, and the CKP sensors. The calculated error allows the powertrain control module (PCM) to accurately compensate for reference period variations. This enhances the ability of the PCM to detect misfire events over a wider range of engine speed and load.

The code P1336 is for a Crankshaft (CKP) and/or Camshaft (CMP) position sensor input signal to PCM concert. It is triggered if the input signal to the PCM for either of these sensors is erratic. Per the factory service manual, this can be due to:
- a damaged PCM
- damaged CKP sensor
- damaged CMP sensor
- base engine
- harness concerns.

The service manual suggests checking the following items:
- harness routings,
- alterations,
- improper shielding,
- or electrical interference from other improperly functioning systems.

To properly check the operation of the CMP and CKP, you'll really need an oscilloscope. The code is probably being triggered due to a faulty sensor or connection and not something that just needs to be reset.

Step / Action / Yes / No

1. Did you perform the Diagnostic System Check-Engine Controls?
Yes: Go to Step 2
No: Go to Diagnostic System Check - Engine Controls

2. Preform the CKP system variation learn procedure. Refer to CKP System Variation Learn Procedure. Did you complete the action?
Yes: Go to Step 3
No: Go to Diagnostic Aids

3. Clear the DTCs with a scan tool.
Turn OFF the ignition.
Start the engine.
Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC run and pass?
Yes: Go to Step 4
No: Go to Step 2

4. With a scan tool observe the stored information, Capture Info.
Does the DTC run and pass?
Yes: Go to Diagnostic Trouble Code (DTC) List
No: System OK


Diagnostic Aids:
The CKP system variation values are not stored in the PCM memory after a learn procedure has been performed. If the actual CKP variation is not within the CKP system variation compensating values stored in the PCM, DTC P0300 may set.

The CKP system variation learn procedure is also required when the following service procedures have been performed, regardless of whether DTC P1336 is set.
An engine replacement
A PCM replacement
A harmonic balancer replacement
A crankshaft replacement
Any engine repairs which disturb the CKP sensor relationship

If the CKP system variation learn procedure cannot be performed successfully, check for the following conditions and correct as necessary:
A damaged reluctor wheel
Excessive crankshaft runout
A damaged crankshaft
Interference in the signal circuit of the CKP sensor
A coolant temperature that is not within the Conditions For Running the DTC
The ignition switch is in the ON position until the battery is drained
A PCM power disconnect with the ignition ON may erase the stored value and set the DTC P1336

Hope helps.

May 05, 2011 | 2005 Ford Freestar

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