Question about 1999 Volkswagen Golf

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Crank sensor no signal...changed crank sensor..still intermittent fault. possible causes?

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Break, or breaks in the wiring of the wiring harness, from the crank sensor to the coil pack. The cam sensor works in conjunction with the crank sensor also. Thought I should bring that up too.

There can be breaks in the wiring of the wiring harness. This is no fun to remove and check, I know! I had to do it with a 1992 Pontaic Bonneville, with a 3.8 Liter V6 engine. (Remove everything to get down to the water pump, and then remove the water pump. The harness is behind the water pump!) You have to remove the harness, attach a multimeter, (Set to OHM's so you can check continuity), to the harness on each individual wire. (Red, or Positive probe to one end of the wire, Black, or Negative probe to the other end of the wire)

Wiggle the wire to see if continuity breaks. (I just stripped the insulation all the way off of each wire, to check it. I replaced each and every wire anyway!)
With the GM 3.8 Liter V6 engine, this was a 90% sure occurrence. Nothing like driving 25 miles from home in the middle of nowhere, to have the car just shut off!

Posted on Jul 13, 2009

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Any way to test crankshaft sensor on 01 Ram 1500 6cyl 3.9L? Would it cause truck to die on highway and not start back up?


You can't test it directly, you need a scanner to watch the signal to see if it cuts out, this happens when the engine is hot in most cases, after it cools it will sometimes restart. It will also set a fault code in the computer, have you run a fault code test?

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What is code p0106


A P0106 could be caused by: Bad MAP sensor Water/dirt intrusion affecting MAP sensor connector Intermittent open in the reference, ground, or signal wire for the MAP sensor Intermittent short in the reference, ground, or signal wire for the MAP sensor Ground problem due to corrosion causing intermittent signal problem A break in the flexible air intake duct between the MAF and the intake manifold Bad PCM (do not assume the PCM is bad until you've exhausted all other possibilities)

Feb 19, 2015 | 2004 GMC Envoy

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Replaced timing belt and water pump on a 2005 dodge neon with a 2.0 it starts and idals great but you press or reve it up it backfires through the intake and pulls up code p0344. whats the problem.


Hi Ricky, I'm glad to help. Below is the possible causes for the P0344 code that you have.



Symptom:
P0344-CAMSHAFT POSITION SENSOR INTERMITTENT
When Monitored and Set Condition:
P0344-CAMSHAFT POSITION SENSOR INTERMITTENT

When Monitored: Engine running or Cranking.
Set Condition: When the failure counter reaches 20. One Trip Fault.
POSSIBLE CAUSES

GOOD TRIP EQUAL TO ZERO
WIRING HARNESS INSPECTION
(K7) 5 VOLT SUPPLY CIRCUIT OPEN OR SHORTED TO GROUND
TONE WHEEL/PULSE RING INSPECTION
CHECKING CKP SIGNAL WITH THE DRBIII
t LAB
CAMSHAFT POSITION SENSOR
(K44) CMP SIGNAL CIRCUIT OPEN
(K44) CMP SIGNAL CIRCUIT SHORT TO GROUND
(K44) CMP SIGNAL CIRCUIT SHORTED TO B+
(K44) CMP SIGNAL CIRCUIT SHORT TO (K7) 5 VOLTS
PCM

Apr 18, 2014 | 2005 Dodge Neon

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

Engine fault code P1391


that is: Intermittent Loss of CMP or CKP which means intermittent loss of crank sensor or cam sensor signal most likely something a dealer or tech needs to repair.
Hope that helps, if this was accurate please give a thumbs up so others know too

May 15, 2011 | 1996 Chrysler Town & Country

2 Answers

1997 villeager mercury van engine code po385, and po400


P0400 - Exhaust Gas Recirculation Flow Malfunction
The exhaust gas recirculation (EGR) valve is vacuum controlled valve that regulates the amount of exhaust gases that re-enter the cylinders. The powertrain control module (PCM) determines how much based on engine load, temp, and other conditions. If the PCM detects that the amount of exhaust gases entering the cylinder were insufficient or non-existent, this code is set.

Symptoms: No symptoms will likely be noticed by the driver other than the MIL (malfunction indicator lamp). However, non visible symptoms will be increased combustion temperature and increased Nox emissions.

Causes: A code P0400 may mean that one or more of the following has happened:
Plugged EGR passage which restricts the flow of exhaust gasses
Faulty EGR solenoid
Faulty EGR solenoid wiring/harness
Vacuum lines damaged/disconnected to the EGR valve solenoid or to the EGR valve
Faulty EGR valve

Possible Solutions: Since EGR valve designs are different, no one test will suffice:
Using a scan tool, operate the EGR valve with the engine running. If the engine stumbles, the problem was likely intermittent wiring problem or intermittent blockage problem
If engine doesn't stumble, operate the EGR valve manually, if possible. If engine doesn't stumble and die, the ports are likely plugged. Removal of valve and cleaning of all ports will be required
Checking of solenoid can only usually be done with a scan tool, because most solenoids operate with a duty cycle of voltage, rather than constant voltage
Check all vacuum lines, hoses, etc for any damage
Visually inspect the solenoid harness and the solenoid for damage
Replace EGR valve



P0385 - Crankshaft Position Sensor B 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, P0385 will set.

Symptoms:
NOTE: If the crank sensor is used only for misfire detection and NOT spark timing (this varies with the vehicle), the vehicle should start and run with MIL (Malfunction indicator lamp) illumination. Also, some vehicles require several key cycles to illuminate the MIL. If this is the case, there may be no MIL illumination until the problem often enough over time. If the crank sensor is used for BOTH misfire detection and spark timing, the vehicle may or may not start. Symptoms may include:

Vehicle may not start (see above)
Vehicle may run rough or misfire
MIL illumination

Causes: A P0385 "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
Failed PCM

Possible Solutions:
Using a scan tool, check if, when engine is running or cranking, that there is an RPM signal.
If there is no RPM reading, then visually inspect the crank Sensor Bnd connector for any damage and repair as necessary. If there is no visible damage, and you have access to a scope, you could check the CKP 5 Volt square wave pattern. If you do not, then, obtain a resistance reading of your crank sensor from a repair manual. (There are so many different types of crank sensors that there's no way to put here which resistance reading is correct). Then check the resistance of the CKP sensor by disconnecting the Sensor Bnd measuring resistance of the sensor. (It is best to check resistance readings from the PCM connector. This rules out any wiring problems from the start. But it does require some mechanical skill and shouldn't be performed if you\'re not familiar with automobile electrical systems). Is the sensor within resistance specs?
If not, replace the CKP sensor. If so, recheck resistance reading from the PCM connector. Is the reading still okay?
If not, repair open or short in the wiring to the crank Sensor Bnd re-check. If the reading is okay, the problem is intermittent or the PCM may be at fault. Try reconnecting and checking for RPM signal again. If there is now an RPM signal, wiggle test the wiring harness to try and induce the fault.

This code is basically identical to P0335. This code P0385 refers to Crankshaft Posistion Sensor "B", whereas P0335 refers to Crankshaft Position Sensor "A". If you have the code P0385, your vehicle is equipped with two crank sensors (CPS). Other crank sensor codes include P0016, P0017, P0018, P0019, P0335, P0336, P0337, P0338, P0339, P0385, P0386, P0387, P0388, and P0389.


Hope this helps.

May 13, 2011 | 1997 Mercury Villager

1 Answer

My car is showing PO344 (Camshaft Position Sensor A Circuit Intermittent) as a problem it's having... I replaced the camshaft sensor about 2 years ago when I was having a similar problem; could the sensor...


All ways, the camshaft position sensor signal sent to the ECM is intermittent

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. This information is used by the Powertrain Control Module (PCM) or Electronic Control Module(ECM) to control ignition and fuel injection. The camshaft position sensor senses the retraction of camshaft (intake) to identify a particular cylinder. The camshaft position sensor senses the piston position. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor.

When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field cause the voltage from the sensor to change.

When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor provides various controls of engine parts instead, utilizing timing of cylinder identification signals.

Check thos DTC diagnostic and possible solutions about P0344 - Camshaft Position Sensor Circuit Intermittent

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power
- Engine Stall

Possible causes
- Harness or connectors (The sensor circuit is open or shorted)
- Camshaft position sensor may be faulty
- Camshaft (Intake) may be damage
- Starter motor may be faulty
- Starting system circuit
- Dead (Weak) battery

Possible solution
- Charge battery
- Repair harness or connector
- Replaced Camshaft Position Sensor.
Tech notes
- Sometimes and in some models, low battery voltage or a weak starter can can trigger a Camshaft Position Sensor code.


Hope this helps.

Mar 27, 2011 | Dodge Stratus Cars & Trucks

1 Answer

Volkswagen lt 2.8 cut down on the road, when i restart works


If it sputters to a stop, then I would suspect fuel delivery problems, If it stops abruptly, then likely loss of ignition power (fuse?) or loss of the crank or cam sensor signals. You need to have a code reader attached while driving, that records intermittent faults, to track this one down. It could also be the computer itself!

Aug 08, 2009 | 2005 Volkswagen Microbus

2 Answers

Dodge durango PO320 + PO700 + PO725


SYMPTOM
P0320 - NO CRANK REFERENCE SIGNAL AT PCM

WHEN MONITORED
With the ignition ON.

SET CONDITION
No signal from the Crankshaft Position Sensor is present during engine cranking, and at least 3 Camshaft Position Sensor signals have occurred.

POSSIBLE CAUSES
SYMPTOM
P0700 - EATX CONTROLLER DTC PRESENT

WHEN MONITORED
Ignition key ON, Continuously.

SET CONDITION
Any DTC sets in the Transmission Control Module.

POSSIBLE CAUSES

Jun 04, 2009 | 1997 Dodge Caravan

1 Answer

Trouble codes


Trouble Code: P0139
O2 (B1 S2) Slow Response
Trouble Code Conditions:Engine started; vehicle driven at 20-55 mph with the throttle open for 2 minutes; ECT at more than 158ºF (70C); catalytic converter temperature is more than 1112F (600C); and EVAP purge is active. O2 Sensor signal voltage switches less than 16 times from lean to rich within 20 seconds during monitoring, or will compare the state of change between the front and rear O2 Sensors and if the differences are greater than a calibrated amount, the DTC will set. 3 good trips are required to turn off the MIL.
Possible Causes:
  • Exhaust leak
  • O2 element is contaminated, deteriorated or it has failed
  • O2 signal circuit or return circuit has failed

Trouble Code: P0344
Camshaft Position Sensor Circuit Intermittent
Trouble Code Conditions:Engine cranking or running; system voltage over 10.5v. The PCM detected an intermittent loss of the CMP Sensor signal during the period of 2.5 complete engine revolutions. The failure counter must reach 20 before this code matures and a code is set.
Possible Causes:
  • Wiring harness fault
  • 5v supply circuit open or shorted to ground
  • Tone wheel/pulse ring is damaged or corroded
  • CMP Sensor has failed
  • CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply
  • CMP Sensor ground circuit is open
  • PCM has failed
  • Trouble Code: P0340
    No Camshaft Position Sensor Circuit Failure
    Trouble Code Conditions:Engine cranking or running, system voltage over 10v. The PCM detected CKP pulses without detecting any CMP Sensor pulses for 5 seconds or 2.5 engine revolutions.
    Possible Causes:
  • CMP Sensor connector is damaged, open or it is shorted
  • CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit
  • CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage
  • CMP Sensor ground circuit is open
  • CMP Sensor is damaged or has failed
  • CKP Sensor is damaged or has failed
  • PCM has failed
Good luck....

Nov 05, 2008 | 2005 Chrysler PT Cruiser

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