Question about 2003 Mitsubishi Lancer

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Rpm problem my lancer slx is on cng and the rpm goes high without accelerating or keeping my foot on the accelerator on neutral mode. it calms down after 5 min? earlier i had repaired the head.

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  • 167 Answers

Check for vacuum leaks. Split hose or pipe coming from or to the inlet manifold.And don't just look at them get in there with your hands and feel all around the hoses checking for splits cracks loose clamps .....
Let me know how you get on.

Posted on Jun 28, 2009

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Posted on Jan 02, 2017

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Why does my 99 cavalier Rev up to 2000 rpm when I Shift from Drive to Neutral without my foot on the gas peddle


Hi check all air pipe lines on and around inlet or induction manifold for damage or leakages . Check throttle sensor ,idle control valve or sensor ,throttle body might require servicing and adaptation with diagnostic equipment .If the vehicle has a manual acceleration system cable might be sticky or damaged.

Apr 05, 2015 | 1999 Chevrolet Cavalier

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Why does my car's RPM goes down when idle and AC turned ON?


No idea here i would suggest a visit to the garage that installed the gas conversion ,if i had my head inside the engine i might be able to work out whats wrong but from afar ? i stand no chance

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Transmission surge at cruise


check the rpm and road speed when this happens . The cruise control will increase to keep RPM constant but as the road speed drops the auto may be shifting down and as the rpm increase it shifts back before the rpm adjusts. You can override a cruise control in this situation by simply pressing down on the accelerator to maintain the power setting and road speed and when the situation is passed and you take your foot of the accelerator the cruise control will return the system to the set position without you needing to do anything

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The accelerator pressed does not give full rpm


just about all cars with a computer have a rev limiter so you don't over rev it spinning a engine without a load is more harmful then with one this is normal

Apr 20, 2012 | Cars & Trucks

1 Answer

92 NISSAN WITH BOGGING AT 2800 3500 RPM AND AT LEVEL SPEED 4CYL AND 5 SPEED


For this types of problem,there are few help inks to troubleshoot the problem.Click the link below to go through the troubleshooting procedure to resolve the issues :----Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html-----------van idles rough? http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html
--------------runs lean and idles rough? http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html
-----------Car still runs Rough after tune up? http://howtobyme.blogspot.com/2011/12/car-still-runs-rough-after-tune-up.html
------------Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed? http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html
----------High rpm in neutral? Inconsistant high RPM in neutral? http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html
------------Engine Backfires? http://technoanswers.blogspot.in/2012/02/jeep-backfires.html----------- Nissan stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

-----------
Nissan Pathfinder Backfires? http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-backfires.html
---------How to adjust rpm? http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
------------Engine cuts out at 3000 RPM? http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html
----------This will help.Thanks.

Feb 17, 2012 | 1992 Nissan Pickup

1 Answer

Engine surging up and down, hard to start, shutsdown when I remove my foot from the accelerator, sometimes stays at high 2000 rpm's while driving without using the accelerator


doug you do have some problems first thing is to ckeck your fuel pressure or it could be dirty or bad injectors or loose injector connections or a intake air leak or vacum lines or pressure regulator (fuel) it gonna be a process of elimnation hope this helps

Oct 28, 2011 | 1996 Cadillac DeVille

1 Answer

My 2006 Ford Fusion has issues. When driving, if you take your foot off the accelerator, it jerks so bad and slows down...I mean JERKS... as it slows down, then when you want to accelerate again, it sticks...


Most likely issue is your accelerator position sensor. Recommed you remove it and test with an ohmmeter. I don't have the pinout, but there are only four pins. Find the two pins that have a change in resistance when the arm is rotated. The resistance should change smoothly as you rotate the arm. If it jumps around, replace it. Cost is about $75.

Jun 09, 2017 | 2006 Ford Fusion

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