Question about 1996 Mitsubishi Eclipse

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99 eclipse idles at 4000 rpm, replaced Idle sensor, no help, can't find any vacuum leaks

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 8 Answers

SOURCE: 2000 Mitsubishi Eclipse will not idle, all else OK, just repl bat

I can only offer these few ideas.

  1. The TP throttle position sensors for this year group fail often Pin 1 to Pin 4 resistance should be 3.6 to 6.3 ohms but you need to remove the two 7mm bolts that hold this sensor on the front side of the throttle body, then rotate the two bolstered center and see a change in resistance from low to high. If the resistance remains fixed, the sensor is rusted out and must be replaced.
  2. The IAC motor is mounted on th LH side (driver's) of the throttle body. It should make a clicking sound when the key is turned from Lock to Run. Pin 2 to Pin 1, Pin 2 to Pin 3, Pin 5 to Pin 4, and finally Pin 5 to Pin 6 must all have continuity at 38 to 52 ohms.
  3. Check for any vacuum leaks.
  4. Remove clean and check EGR.
  5. If this is a Cranks but will not start problem, check the owners manual for Theft Deterant UNLOCK proceedure. If there is power at the rear fuel pump relay coil and no power at the MFI/ASD front relay coil and no spark, then its the security system.

Posted on Jun 28, 2009

alicantecoli
  • 22095 Answers

SOURCE: 2001 mitsubushi eclipse Idle is rough

havent a clue here to be truthful,it might need a dealer fitter to look at it ,if i had the vehicle in front of me i would sort it out eventually but ??? changing the air flow valve is over 300€ in parts alone ,No i think taking it to the dealers is probally your best bet

Posted on Jul 09, 2009

lindsay836
  • 677 Answers

SOURCE: Stalls when at idle after changing battery

When you changed the battery the computer must re-learn the setting again. If it continues have a OBD II reader plugged in and check for codes.

Posted on Feb 01, 2010

ZJLimited
  • 17970 Answers

SOURCE: 02 mitsubishi eclipse p507 code.

P0507 - Idle Air Control (IAC) System RPM Higher Than Expected

This P0507 code is one that's sometimes triggered on vehicles that have electronic throttle control. That is, they don't have a regular throttle cable from the accelerator pedal to the engine. They rely on sensors and electronics to control the throttle. In this case, the P0507 DTC (diagnostic trouble code) is triggered when the PCM (powertrain control module) detects an engine idle speed that is greater than the desired (pre-programmed) RPM. In the case of GM vehicles (and possibly others) if the idle speed is over 200 rpm higher than expected, this code will be set.

Potential Symptoms: Most likely you'll notice the idle speed is higher than normal. There are potentially other symptoms as well. Of course, when trouble codes are set, the MIL (malfunction indicator lamp, a.k.a. the check engine light) illuminates.

Causes: A P0507 DTC trouble code may be caused by one or more of the following:
* A vacuum leak
* Leaking air intake after the throttle body
* EGR valve leaking vacuum
* A faulty positive crankcase ventilation (PCV) valve
* Damaged/failed/dirty throttle body
* Failed EVAP system
* Failed IAC (idle air controller) or faulty IAC circuit

Possible Solutions: This DTC is more of an informational code, so if there are any other codes set, diagnose them first. If there are no other codes, inspect the intake air system for air or vacuum leaks and damage. If there are no symptoms other than the DTC itself, just clear the code and see whether it returns.

If you have an advanced scan tool that can interact with the car, command the idle higher and lower to see if the engine responds appropriately. Also check the PCV valve to see if it's blocked and needs to be replaced. Check the IAC (idle air controller) if equipped, verify it's operation. If available, try swapping in a new throttle body to see if that fixes the problem. On Nissan Altimas and possibly other vehicles the problem may be fixed by having the dealer perform an idle air relearn procedure, or other relearn procedures.

Hope helps.

Posted on Aug 17, 2010

SOURCE: high rpm at idle: code P1294 target idle not reached

Hi Rodrigo, The idle control is activated by the temperature sender unit. It sounds as though yours is giving a cold signal to the computer and it pushes up the idle speed to compensate as if it has just started. The sender unit is a different unit from that which operates the gauge on the dash instrument panel. Replace it and I believe your problems will be over.Regards John

Posted on Apr 29, 2012

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96 eclipse.


Check for a vaccum leak at the intake. With the engine at idle spray a bit of starting fluid to find it. You will hear the engine pick-up when you hit the spot. Change the necessary gasket. Hopefully this will solve your prob! Frankster016

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