Question about 2002 Mitsubishi Mirage

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I have idle problems after disconnecting battery

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Check all the connectors for the sensors,even the one on the air filter.or a vacuum line came off.

Posted on May 15, 2009


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Posted on Jan 02, 2017


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Relearn procedure

i know on subarus and camry u have to disconnect batterry ,switch on headlights,(while battery disconnected ,to discharge diodes in engine control module,memory) then reconnect battery and when u start car hold it at 1500rpm for 3 minutes then allow car to idle,if for example it then idles at 500rpm and u want it to idle at 750 rpm ,repeat the previous battery disconnect procedure and then restart and hold it at 1750rpm for 3 min ...........the increment of idle up and or down is adjusted according to wat revs u hold it at for first 3min , if tis does not rectify problem the throttlebody may need to be adapted to the ecu with diagnostic computer

Jan 30, 2014 | Chevrolet Cars & Trucks

1 Answer

Still Rough Idle After Battery Disconnect

The first thing to do is not set up the idle speed, but to set the Idle mixture screw to lean best idle setting. First, turn in the mixture screw until the engine dies or runs worse, then back out the screw (recommend turning ¼ to ½ turn at a time). The engine should pick up speed and begin to smooth out.

The battery has nothing to do with the idle speed

Apr 09, 2017 | 2004 Mazda 6

1 Answer

2002 GMC envoy slt 4.2 v6 My question is.. I recently changed the water pump on my wife's envoy. After replacing it the car idles low and high, low and high constantly. No normal idle like before. I...

Sounds like you may have disconnected the battery. Does the rough idle only happen when the defroster or A/C is on? If so clean your throttle body with throttle body cleaner with the battery disconnected. When finished, drive it for 5 or so miles with the defroster / AC off to let the computer relearn the settings. This will solve your problem.

Dec 21, 2010 | 2002 GMC Envoy

1 Answer

2001 mitsubishi eclipse gt stalling out after battery change. Will not idle unless ac compressor kicks in.

Disconnect the positive wire on the battery for 15 minutes Reconnect the positive wire on the battery and start and let the car idle for 15 minutes. Must be in idle, do not try to drive it around or it will stall at intersections and you'll have to start all over. This process essentially clears the computer and then gives the computer enough time to get its bearings and calibrate. After that you should have no more problems. Dumb design that causes extra headache whenever I take it to be worked on and they have to disconnect the battery.

Jul 09, 2010 | Cars & Trucks

2 Answers

2001 Dodge Dakota Extended Cab V-6 radio won't function

the radio is in theft lock, you will need your unique code that came with the truck new to unlock it.

Jun 28, 2009 | 2001 Dodge Dakota

2 Answers


Have the Idle Control Solenoid Valve cleaned up.

Or it might be defective. See steps below to check...
  1. Disconnect idle control solenoid valve electrical connector.
  2. Disconnect upper hose to solenoid valve from manifold and apply vacuum to hose. Valve should hold vacuum.
  3. Continue applying vacuum to hose and briefly energize valve by connecting battery positive terminal to the black/yellow wire terminal and negative battery terminal to the green/black wire terminal. Valve should not hold vacuum when energized.
  4. If idle control solenoid valve fails to perform as outlined, valve is defective.

Jun 03, 2009 | 1991 Honda Accord

2 Answers

Battery chaged and car DOES NOT idle

when u disconnected the battery u lost the adaptive idle learn program, do the following to clean the intake and allow normal idle

Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

May 03, 2009 | 2001 Mitsubishi Montero Sport 4WD

4 Answers

Idle problem

If the car starts after charging but will not idle, I would suspect the alternator is defective. The alternator is fitted with a diode pack (all to do with the electrics, valve bocking AC but allowing DC to pass) this is the the part that fails.
It allows a correct current to pass to the battery (DC only)
If the car starts after charging and runs for a few miles before stopping and the evidence is a dead battery - It will definately be the alternator.
Hope this helps

Oct 20, 2008 | 2002 Suzuki XL-7

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