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Jerking while idling

Car cuts off ac is on and idling...constantly jerks when driving

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  • 26 Answers

Sounds like your ac compressor is locking up or the clutch is sticking.

Posted on Oct 15, 2013

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Posted on Jan 02, 2017

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SOURCE: car jerks violently while driving

air bubble in gas lines or a big ******** id say get it flushed

Posted on Jul 24, 2008

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SOURCE: 2003 Mazda Mpv jerks when idling abd breaking

Check to see if you have a MPV that has been included in the recall for the PCV line. Yes it is difficault to get to on your own, however they have special tools to reach behind the manifold to remove the line and install a new one. If you do it on your own it is very difficaul and will take a few hours as a I did before I found out about the recall. The service dept. should have asked you about the recall when you went to get the part from them. Where I got pissed was when they did replace the hose the faulty line had fouled the pcv valve and they did not bother to replace it and that is tucked under the intake manifold and under the fuel rails.

Posted on Feb 04, 2009

  • 5546 Answers

SOURCE: Car rev up and down at startup, also car jerks at release of gas

This sounds like a vacuum control problem. Since part of the problem is when the engine is cold; a thermal switch is venting vacuum until the engine warms up enough to shut down the thermal switch, thus restoring a steady idle. Vacuum can be affecting high rpms while running too. You could have a misrouted EGR vacuum line opening the valve at the wrong time. There are sometimes hose routing decals on the radiator shroud or under the hood. These can be visibly checked.

Posted on Apr 20, 2009

ftw1952
  • 10319 Answers

SOURCE: car jerks while sitting idle at stop light

Soujnds like your throttle positioning sensor is going bad. This is the sort of thing that happens before they go completely out.

Posted on May 23, 2009

  • 14036 Answers

SOURCE: my car has eratic idle and acceleration jerking.

sound like a intake leak.dirty fuel injectors.fuel pump problems.

Posted on Jun 11, 2009

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1 Answer

Toyota camry jerk when AC is on ?


The AC system requires horsepower so it may cause a jerk if the following is present, the idle speed control system is fouled up with gunk and slow to respond to the load change. I suggest you clean the idle speed control valve and the throttle valve with spray throttle valve cleaner and see if that helps.

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My 2004 mazda6 jerks while idling with a/c on and in drive


take it to an accredited ac specialist shop as there are two possible reasons
too much gas in the system locking the compressor or a failing compressor you say there is no problem when the ac is off and the only thing that can be affected is the ac compressor

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Hi my name is Don while drive in my car it's fine until I cut Da ac on then it starts jerking like it have bad gas like Da plugs in there bad I done got egr lines new coals an New plugs it stop for about 2...


Hello, Don with da a/c on...
Although "jerking" doesn't rhyme with "plugs," I think I understand your question.
Depending on what kind of car it is (you didn't say), there is likely either an air bypass or an Idle Air Controller, which is designed to maintain the idle under the load of the a/c compressor. If the air bypass or IAC is not functioning correctly, the idle will be allowed to fall below specification, making the car idle rough because the idle is too low.
Check to be sure that your air bypass or IAC is working properly.

Jul 17, 2014 | Cars & Trucks

1 Answer

What is wrong with my car when it jerks in drive


jerks when?

moving the shift lever. with hand?

moving car. in gear,name the gear, drive, L or reverse?

jerks from, 1 to 2nd gear, 2nd to 3? or ? (or when IT down shifts)

pretend we are blind (we are) and cant drive car,(hopeless) and

tell us exactly what works and dont work driving.

hot /cold engine, fast /slow/ accelerating/ decelerating, up hills and what gears.



if engine is hot, is your idle at 800 RPM parked, in park.

y/s

if not the idle controls are out of control and when you shift to drive

IT will jerk. this is an engine problem.

there are lots of other symptoms.

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The first thing you do is to have the fault codes checked with a scan tool.

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run fault codes and fix faulty sensors.

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2003 hyundai santa fe constantly jerks while idling.


it has to do with the injection system. Might be something stupid like a manifold intake gasket leak (commonly known as cylinder 4 misfire problem) or it could be a part of the system like : spark plugs, wiring, fuel injector, throttle position sensor. A low cost solution worth trying is a kleen flow injection system cleaner. It will remove a lot of carbon and see if it helps...

Mar 20, 2013 | 2003 Hyundai Santa Fe

1 Answer

My car jerks and cuts off when i excelarate after driving for awhile


Clean or replace the "Idle Air Control Valve" and use injector cleaner in your gas tank...STP super concentrated in the black bottle is proven...Hope this helps.

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1 Answer

My car is jerking while driving.


Have engine wiring harness checked as 1993-1995 MB's were forced by US to use biodegradanle insulation on its wires. If thats not it replace coils and do a tunes up.

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1 Answer

2003 Expedition jerking/cutting out.


Had same problem: cutting out at low rpm, jerking, a huge clunk or shudder at higher speed (like transmission was going out), and rough idle. All these symptoms were intermittent.

CHECK THE FUEL FILTER!! Changed the fuel filter and thing runs fine!!

PS mine 2003 expedition has 105k

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