Question about 1999 Mitsubishi Eclipse

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After replacing a camshaft position sensor a p1390 shows up

I replaced a CMPS on a 1999 avenger with a 2.0l engine, for an oil leak and got this code, cleared it and the code came back. The code reader reads ignition control or misfire problem. Could this be a defective aftermarket cam sensor?

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  • mchevy85 Jan 17, 2009

    well the code is p1390 I put that in the header, and I replaced the sensor because that's how it was serviced at the local auto parts store. maybe the dealer can sell just the gasket.

  • mchevy85 Jan 18, 2009

    Thanks for the quick response, I talked to the owner of the car who had his son-in-law put on a timing belt some time ago, however when i drove the car to my house to fix the leak it drove poorly like a tooth off, but now it doesn't drive poorly just has a check engine light, i still need more info , will pull the timing cover tomorrow and fill you in. I hate fixing oil leaks, they always turn into this.

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I have a 97 eclipse and the check lights on and i got the same code. just replaced the cam sensor and wires spark plugs. and and the idle bogs low and now the ****** wont start aftr long trips for some reason

Posted on Aug 28, 2010

  • Elica Terry
    Elica Terry Sep 12, 2011

    have u tried the egr valve? mine ran poorly until I cleaned it real good

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Cam sensor fires the injectors so ignition control is not really what it does. The crankshaft sensor provides spark control, the Cam sensor provides injector pulse timing.
The actual code no it throws is much more use for us to diagnose...pls specify the Engine light code and I can be much more helpful.
Why did u change the cam sensor for an oil leak? that does not seem to be an appropriate repair.... anyhow more info=better help
:)

Posted on Jan 17, 2009

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  • Tim Higgins
    Tim Higgins Jan 18, 2009

    sorry I couldnt see that header, P1390 for your vehicle indicates an incorrectly fitted timiiing belt/timing belt skipped. The Cam timing and the Crank timing dont match.

  • Tim Higgins
    Tim Higgins Jan 18, 2009

    sorry I couldnt see that header, P1390 for your vehicle indicates an incorrectly fitted timiiing belt/timing belt skipped. The Cam timing and the Crank timing dont match.

  • Tim Higgins
    Tim Higgins Jan 18, 2009

    either oil contaminated the belt and made it slip or you are possibly correct about a bad sensor... Or an incorrectly positioned one.

    Most likely a slipped belt I think...

  • Tim Higgins
    Tim Higgins Jan 20, 2009

    A badly fitted belt out only a single tooth has a terrible effect on many engines...but not all, depends how many teeth there are on the belt, the % of mistime is directly related to the no. of teeth on the belt and pulleys. Long belt and large pulleys = not very noticeable timing issue. Incorrectly fitted camshaft pulley on some unkeyed camshafts also causes this problem where only a half tooth out causes weird problems... worth looking if a non-mechanic change the timing belt as the correct tensioning is also very important and time consuming/hard to achieve on many cars...Hondas in particular.. refit the belt with proper manual...I can get u that if u need it as I have ALLDATA.

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PO017 code on a dodge journey 2009


P0017 Dodge - Crankshaft-Camshaft Timing Misalignment Bank 1 Sensor 2Possible causes - Engine oil dirty
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05 Kia cranks **** don't start has fuel and fire


Start here: Sounds like you have a Crank or Cam Sensor Failure; Check for any Stored Diagnostic Codes
General Description
The Camshaft Position Sensor (CMPS) is a sensor that detects the compression TDC of the No. 1 cylinder. The CMPS consists of a hall type sensor and a target on the end of the intake camshaft. When the target triggers the sensor, the sensor voltage is 5V. If not, the sensor voltage is 0V. These CMPS signal is sent to the ECM and the ECM uIf the CMP-Sensor does not operate correctly, correct sequential injection is not made so that the engine may stall or run irregularly at idle or fail to accelerate normally.
ses the CMPS signal for synchronizing the firing of sequential fuel injectors.

DTC Description
If the output voltage of CMPS remains low when the change of CKPS output voltage is zero, the ECM determines that a fault exists and a DTC is stored.



Testing and Inspection The CMP sensor senses the camshaft position sensor on compression stroke of the No.1 and No.4 cylinders, converts it into a pulse signal, and inputs it to the ECM. The ECM then computes the fuel injection sequence, etc. based on the input signal.

Mar 22, 2012 | 2005 Kia Optima

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How do i replace the camshaft position sensor


On 2001-2005 vehicles the camshaft position sensor is mounted at the rear of the cylinder head. On 2006 vehicles, the camshaft position sensor is located on top of the engine, on the engine head cover.

Testing 2001-2003
  1. Connect the scan tool to the data link connector.
  2. Start the engine. Allow the engine to reach operating temperature.
  3. Monitor the CMPS signal. It should continuously fluctuate between 0-5 volts.
  4. If abnormality is found, replace the sensor.

Removal & Installation
  1. Disconnect the negative battery cable.
  2. Disconnect the connector from the sensor.
  3. Remove the bolt that retains the sensor.
  4. Remove the sensor.
To install:
  1. Installation is the reverse of the removal procedure.

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, have a nice day.

Dec 22, 2011 | 2001 Kia Rio

3 Answers

I have a Chevy 2006 Aveo. Two codes came up when the engine check light was put on a scanner. Code P0340 and Code P0133. The check engine light has turned off and on by itself several times in the...


P0340 OBD-II Trouble Code - Camshaft Position Sensor Circuit Malfunction

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.

Symptoms can include:
* Hard starting or no start
* Rough running / misfiring
* Loss of engine power

Causes: A code P0340 could mean one or more of the following has happened:
* a wire or connector in the circuit could be grounded/shorted/broken
* the camshaft position sensor may have failed
* the PCM may have failed
* there exists an open circuit
* the crankshaft position sensor may have failed

Possible Solutions: With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
* Visually inspect all the wiring and connectors in the circuit
* Check for continuity in the circuit wiring
* Check the operation (voltage) of the camshaft position sensor
* Replace the camshaft position sensor as required
* Check the crankshaft position circuit as well
* Replace circuit wiring and/or connectors as required
* Diagnose/replace the PCM as required



P0133 OBD-II Trouble Code - Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)

This involves the front oxygen sensor on Bank 1. This code indicates the engine air fuel ratio is not being adjusted by the oxygen sensor signal or the ECM as expected to do so, or not adjusted as often as expected to do so once the engine is warmed or under normal engine use.

Symptoms: You will likely not notice any drivability problems, although there may be symptoms.

Causes: A code P0133 may mean that one or more of the following has happened:
* The oxygen sensor is faulty
* The wiring to the sensor is broken / frayed
* There is an exhaust leak

Possible Solutions: The simplest thing to do is to reset the code and see if it comes back.
If the code comes back, the problem is more than likely the front Bank 1 oxygen sensor. You will likely wind up replacing it but you should also consider these possible solutions:
* Check and fix any exhaust leaks
* Check for wiring problems (shorted, frayed wires)
* Check the frequency and amplitude of the oxygen sensor (advanced)
* Check for a deteriorating / contaminated oxygen sensor, replace if necessary
* Check for inlet air leaks
* Check the MAF sensor for proper operation


Hope this helps (remember to rate this answer).

Feb 09, 2011 | 1999 Chevrolet K1500

1 Answer

My 1997 Mitsubishi Eclipse wont pass emissions because trouble code P1390. I dont know what this means? Ive researched it everyway I know? My check engine light wont come on at all? Help anyone? Thanks!


This is the direct definition of this code
Mitsubishi DTC P1390 - Timing Belt Skipped 1 Tooth or More.
Probable Causes,
-Timing belt improperly installed
-Camshaft position sensor improperly installed
-Camshaft position sensor connector improperly connected
-Crankshaft position sensor connector improperly connected
-Camshaft's relative position not relearned after one of the following have been serviced: Camshaft, Camshaft sprocket, timing belt tension-er, cylinder head, head gasket, crankshaft sprocket, crankshaft cylinder block or the PCM.

Sounds like something to do with the timing belt it self. You can go to any Autozone or Checker and ask for a code reader (they will let you use it for free) and it will show this code again. You can also reset the cars computer with the code reader to see if it comes back with the same code.

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1 Answer

1999 mitsubushi eclipse shows p1390 engine code


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Jul 29, 2009 | 1999 Mitsubishi Eclipse

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O2 sensor


are you sure that it is still the O2 censor? are you assuming because the check engine light is still on? because you have to reset it after fixing something you just disconnect your battery completely for a bit like 15mins and then reconnect it and the light should go away.

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Service engine soon light on. failed aircare.showing code po341 .


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