Question about 2002 Mitsubishi Montero Sport
I cleaned battery post. I started having idle stall. When air conditioner is on, it idles okay. But when I turn off air conditoner the idle drops and engine stalls. I removed air filter, but same problem. Coincidence on battery and idle problem? What could cause the idle to be okay with air conditioner on?
The engine compensates for the load try turning up the idle screw also check the ignition system you might just need new wires and or cap rotor or your coil is bad also plugs
Posted on May 31, 2009
Disconnect your battery for 10 minutes and reconnect. With AC off start engine and keep, it at 1000 RPM's for 5 minutes. Your computer will load the setting in memory. After 5 minutes slowly easy up on the peddle and the car will remain idling at 1000 RPM and will no longer stall.
Posted on Aug 08, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
hi there. the reason that the engine idles good when the air-con is engaged is that ussually all vehicles nowadays have a vacumm advance mechanism. this is triggered mainly by a electric solenoid valve which is also attached parallel to the source supplying power to compressor. a small vacumm hose with a diameter like a common pencil or ballpen case. its made of rubber and it runs from the alternator vacumm pump then to the solenoid valve and to the vacumm advancer unit attached to the injection pump throttle. this system raises the idle a tad higher.
if your montero runs completely normal and you experience no other problems with your engine except for your present problem, then the solution is just raising the idle a little higher. if your montero is equiped with a RPM guage on the dash, try adjusting the idle to around 800 rpms. it would be healthier for your car if the idle raises a bit when you engage the air-con because this would compensate for the added load on your engine.
hope this helps.
Posted on May 31, 2009
Tips for a great answer:
Here are the most common causes of idle surge, 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
Jul 20, 2017 | Mitsubishi Cars & Trucks
Apr 27, 2012 | 1998 Mitsubishi Montero Sport
Apr 30, 2010 | 1999 Mitsubishi Montero Sport
Mar 26, 2010 | 2001 Mitsubishi Montero Sport 4WD
Aug 11, 2009 | 2002 Mitsubishi Montero Sport
Aug 03, 2009 | 2000 Mitsubishi Montero Sport
May 31, 2009 | 2002 Mitsubishi Montero Sport
May 03, 2009 | 2001 Mitsubishi Montero Sport 4WD
Dec 27, 2008 | 1999 Mitsubishi Montero Sport
1,439 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: