Question about 2006 Nissan Altima

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Why does my engine shake and have a low idle at stop lights.

When stopped and in gear my idle will begin to shake. Mind you it does not shake badly to start. Only after driving about a qurater to a half mile with one or two stopps along the way. Hot or cold rain or shine. I have replaced and reinforced every motor mount. The spark plugs are fine and the cam shaft position sensor has been replaced. I've read about this problem but the solutions range from simple to fringe it seems. 63000 mi. Noisy acceleration. Vibration when decelerating . NOT A ROTOR PROBLEM trust me. I've already spent 200.00 on two different mechanics. Canned "motor mount" responses. If they don't have to help they won't

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  • 2 Answers

Check the timing belt. Need a tune up?

Posted on Nov 27, 2012

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Posted on Jan 02, 2017

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SOURCE: 2002 Nissan Xterra Supercharge 3.3L

Check the condition of the plugs you have installed. See if you can find one which has an irregular color. The spark plug should be dry and brown in color. The problem could be just in one or a few cylinders. More than one cylinder may mean a problem with the ignition coil. If it were just one we can isolate it into the components connected to the cylinder.

If you have the SES light on as well, it may be a bad O2 sensor or a bad catalytic converter. Check for the wiring that goes to the O2 sensor. The computer may not be getting the correct reading on how much fuel burned causing the misfire.

Posted on Jul 18, 2011

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SOURCE: ENGINE VIBRATION AT IDLE BUT OK WHILE DRIVING.

Could be any one, or more, of the following -

Plugged injector
Bad plug wire
Fouled plug
Crossed plug wires (hard to tell sometimes on V-8s that run smooth anyway)
Vacuum leak
Leaky EGR valve
Shifted timing sensor

Scan engine for codes and proceed from there.

There is a product called RXP (available here in Texas) that will clean up an engine and gas. Its pretty awesome stuff, and this coming from a person who doesn't really believe in additives.

Posted on Jan 24, 2009

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sound like you have a cylinder not firing properly, a tune-up would be the first thing i'd try

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You can have it tuned to be slightly higher so it won't idle so bad, but you'll lose a little bit of fuel efficiency in the bargain.
Alternatively, just shift to neutral - free and easy.

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Sounds like it is missing badly and would not be so noticeable when running. Have you had it tuned up lately? Could be wires and plugs need replacing. Also if you have a lot of miles on the engine the compression in the cylinders may be low. Two possibilities.

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Car is shaking at idle and then 60 mph


BAD SPARK PLUGS AND WIRES DIRTY FUEL INJECTORS AND STOPPED UP FUEL FILTER OR WEAK FUEL PUMP WILL CAUSE ENGINE TO SURGE.

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I have a 1994 with vortec 4.3 that shakes sometimes


Shakes how? While stopping? Or solely while idle, Engine light on?

If if shakes while stopping you need to check you're wheel hubs and or Suspension ,

Shakes at a light, You may have a bad fuel Injector, Check you're psi in you're fuel pump, A TPS would cause low idle or sometimes high idle, With low idle and a bad motor mount it would shake,

I know theres a few things I'm missing but,.. I have a major Headache atm so I'll get back to you with some more, when i can think better. :)

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Rough low idle in gear when stopped at a light.


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97 Ford Expedition with shkaing at idle and low speed


Most auto parts stores will scan the engine codes free or allow you to use theirs on site. Scan the code and post it back here for additional help.

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Rough idle only when in gear.


The Air Idle Control Valve (IAC) may be bad or dirty with carbon build up. Check for loose wire, remove and try to spraying it with throttle body cleaner to clean the carbon out and dry it with a hair dryer before installing.
The other thing to look for to is stuck EGR valve. same process as the (IAC) as to cleaning it too. If both are beyond cleaning then replace it.
You can go to Auto Zone and have the car scanned for any DTC codes which would indicate any problems with the (IAC) and EGR's performance.
The other thing to that would make the engine shake at low RPM's is bad spark plug and wire or low engine compression, but that would give you problems through out the whole engine's performance.
Good luck and hope this helps, Start with the (IAC) and EGR as to cleaning and scanning the engine.

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