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2002 mitsubishi triton 2.4 petrol idles low cold and revs high when worm and sometimes goes up and down revs quickly

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: 94 blazer vortec 4.3 idle revs up and dont come down

check your Throttle Positioning sensor that should fix your rough idle the TPS controls the breather on the front of the engine its affixed to the right hand side of the throttle body just infront of the spyder on the V6 Vortec 4.3L Models

Posted on Nov 15, 2008

polarcycle
  • 1392 Answers

SOURCE: how do you increase the idle revs on a 2002 lancer

Idle is computer controlled and no way to increase it. May want to make sure the throttle body is clean. Use carb cleaner and a soft tooth brush to remove carbon buildup.

Posted on Mar 06, 2009

  • 1 Answer

SOURCE: Idle Problem when you slow down of come to a stop idle goes low

THis has happened to me in the past. My fix was to clean the throttle body. The problem began after my battery died. The computer was defaulted back to its original settings after replacing the battery. Once I cleaned the throttle body, everything was fine. This happened at about 85,000 miles.

Posted on Mar 13, 2009

emissionwiz
  • 74896 Answers

SOURCE: idle irratic

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

Posted on Apr 13, 2009

GregV24CHOPP
  • 11 Answers

SOURCE: when cold, it idles rough, revs high then low! After warmed up it runs fine

if it runs high when you first start it then mellows out,, theirs no problem , all of our chevys do that.... but if its sputtering or you hear a quiet popping noise check spark plugs

Posted on May 20, 2009

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2 Answers

03 corolla petrol revs up on its own when idling and then settles down again


R u start the car in cold morning or any cold condition? If so, it is normal revs up itself. Sometimes I see some cars revs up to 2000 rpm for 2 to 5 mins, then drop down to 1000 rpm.

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When my taurus has sat overnight...or when it's cold. When I start it, it acts like it wants to die...then it revs up all of the sudden and seems fine. The gauge goes in between 0 and 1 for a few seconds...


Without more info I would guess your Idle air control motor (iac) is going out - this component can be quickly tested at your local mechanic shop without much hassle. Hope this helps!

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2002 trailblazer LT (EXT) motor revs up at start-up , seems too high for my thoughts , then comes back down after a couple of seconds , mind you , it only does it after sitting overnight


It would be a help if you could let us know the idle speed when cold?
Vehicles usually have a higher tick over when they;ve been standing and are cold. It would increase by a few hundred RPM and then quickly drop back to normal as the engine warms up....
Regards Johngee10

Oct 26, 2010 | 2002 Chevrolet TrailBlazer

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Mitsubishi Triton V6 lacks power on acceleration


full power is only achieved when the engine is fully warm(operating temp).so if you accelerate more than, say, a third of the gas pedal,the car will feel sluggish.
this is more apparent when first starting the car in the morning in winter.almost like the car is going to stall.
most wear in the engine is leaving it to idle when cold you should always drive the car straight away from cold.then when hot turn on the a/c if required....

Jul 05, 2010 | 1988 Mitsubishi Pickup

1 Answer

Car cutting out from cold start


You need a 10 mil and 8 mil spanner, carb cleaner and mabie some wd40.
Remove the big hose which goes from the throttle body to the air filter housing. Under the throttle body there is a idle control valve, unplug it, spray some wd40 on the 8mil bolts and take them off. Clean the idle control valve and housing and anywhere else which looks dirty, dry it with a lint free cloth and then put everything back on.
remove the battery negative terminal and leave it off for 30 minutes, this will reset the ecu to factory settings.

On the top of the throttle body there is a black circular rubber screw cover, take that off and there should be a plastic screw.

Connect your battery and start your engine, unscrew the idle speed control (plastic screw) so it revs at 2000rpm cold. When the temp needle reached the middle so it revs at 1000rpm hot.

This should solve the problem, if you drive around and find that you in 4th gear, with your foot off the accelerator and the idle is going up and down madly then the idle control valve is worn out and it needs replacing. Cost around £125 on ebay.

Oct 17, 2009 | 2002 Mitsubishi Lancer

1 Answer

Idle irratic


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

Apr 11, 2009 | 2001 Chrysler PT Cruiser

1 Answer

Tempreture gauge drops to cold and car stops


Sounds like faulty engine temp sensor. When it drops to cold, the engine control unit picks this up and alters the fuel mixture accordingly. The ECU will be making it a very rich fuel mixture for cold starting, hence very poor running when engine is hot.

TL

Jan 12, 2009 | 2006 Renault 181

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