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P0100 Then p0300, 01,02,03

Then car runs good but at idle shakes and misfires

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1 Answer

Rough running, throws code P0100


Mass Air Flow Sensor, you can try to clean with carb cleaner, but most likely will have to replace it.

Dec 16, 2013 | 2001 Ford F350 Super Duty SuperCab

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My car runs at low speed but the car still shaking,Maintain on time, has spent three years Toyota corolla,I want to know what the shaking will what are the reasons?


There are two types of car shake
1, stop idling shaking, this situation is generally low or lack of cylinder engine idle speed. Misfiring need to check the spark plug and the high voltage line! In addition, the nozzle and the solar term door dirty is easy to appear this kind of circumstance! Wash!
2, the driving time jitter, the chassis and a relationship! Because the rod or swing arms open, do a four wheel positioning can be solved!
source: obd2 tool car diagnostic tool

Dec 02, 2013 | Cars & Trucks

1 Answer

My 03 nissian altima. Cleaned the throttle body and then had an unstable idle. Performed a manual idle relearn proceedure and idle's fine in park but in drive idle drops low engine shakes and now has...


PO300 codes are cylinder misfires
Lot on the internet you can study
Usually a failed coil but not always the one
you get the code for
May have to walk a new one from cyl to cyl
Did you create a vacuum leak
While your working on it loss the front oxygen
sensors They are only good for 100,000 miles

Aug 11, 2013 | Cars & Trucks

1 Answer

My pathfinder 2001 cranks too long before it starts and when it starts sometimes it gives white smoke and the engine shakes,but when i increase the accelerator everything works perfect but the engine...


I would say something cut into the wiring harness. Maybe it is resting on a hot pipe, but that is a lot of circuits. It has been running rich, which may have caused the converters to fail. Do not replace them until the problem is solved and only if tbe 420 and 430 codes come back. Check the ecm connector and the unit itself for damage. The ecu looks like it's on the center of the firewall, but I'm not sure if it's inside the cabin or engine compartment.

Aug 03, 2017 | 2001 Nissan Pathfinder

2 Answers

185k miles 4x4 truck misfires and shakes at idle with a/c off throws a P0306 have replaced- plugs, wires, cap, rotor, coil, and new distributor also the fuel injector spider and upper manifold gasket and...


If you replaced the distributor,plugs,wire,cap,coil,and still have misfire?Inspect the EGR. reove and make sure the pintle is not carbon up. If it is open it will cause random misfire,Its best to inspect it.Heres why you may be looking next at the cylinder head problem from lifters to push rod out of adjustment.11_2_2011_3_09_49_am.gif11_2_2011_3_10_23_am.gif

Nov 01, 2011 | 2001 Chevrolet S-10

1 Answer

After the engine start running for sometime it starts shaking.


hi this could be a few things, i would check your idle as a very low idle will cause engine shaking when the engine is near stalling, idle should be around 700rpm approx when warm. If that checks out all good check the leads and that one is not getting worn and causing a misfire or a vaccum hose is not off, both will cause similar problem. The last thing i can think of is a broken engine mount causing problem as when motor idles or runs at a certain rpm it will shake harder and may be the cause aswell

Jun 08, 2011 | 2001 Subaru Legacy

1 Answer

Code po100 & p0300 come up. then I clean throttle body with cleaner, then the van stops missing & run good & light go's out.


P0100 is mass airflow circuit, p0300 is multiple cylinder misfire. Faulty maf sensor is most likely the cause of the misfires.

Mar 11, 2011 | 1998 Chevrolet Astro

1 Answer

When it idles the vehicle shakes. it idles rough


It sounds like there may be a cylinder misfire... .basically a misfire is when a cylinder does not fire correctly, This can be caused by faulty spark plugs,coil packs,dirty fuel injectors,clogged fuel filter,or bad cylinder compression. When was the last time you gave it a tune-up? I would lean towards changing the spark plugs myself. good luck

Feb 27, 2010 | 2000 Jeep Cherokee

1 Answer

Car is shaking, smoking, and burning a lot of fuel


Do You Get An Engine Code
Sounds like A Cylinder Is Misfiring
Or A Valve Is Not Seating Good

Jun 30, 2009 | 1994 Lexus GS 300

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