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I have a infiniti i35it hestitates to start..,cuts of anywhere and when i accelerate it makes a loud rattling noise..the cars shakes really bad and go in and out like it wants to shut off and it kicks right back in.what can be wrong??Is my ignition coil pack bad??

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I would run the fault codes and look for problems in the air/ fuel ratio control sensors.. The noise under acceleration is detonation from uncontrolled combustion from the incorrect air / fuel ratio for the engine RPM's and throttle opening. I would not say bad coil packs as they cause more misfiring . Check for cam/ crank position sensors fault as well.

Posted on Nov 17, 2013

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Posted on Jan 02, 2017

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SOURCE: Car shakes really when I accelerate from any speed

i would check your motor mounts and transmission mount. sounds like one if them is going bad

Posted on Nov 16, 2008

  • 7 Answers

SOURCE: ignition coil problem

THE PROBLEM IS RESOLVE, IT WAS THE GROUND WIRE FROM THE FIREWALL TO THE INTAKE MANIFOLD, ITS A BLACK 10 GAUGE BLACK WIRE FOR GROUND, IT WAS LOOSE.

Posted on Feb 13, 2009

  • 17 Answers

SOURCE: 2002 mustang makes rattling sound when accelerating...

Possible bad motor mount(s) --only thumps or rattles when power is going to the wheels.

Posted on Jun 12, 2009

  • 1986 Answers

SOURCE: No spark from coil pack

The most common reasons for them going out are not using dielectric grease properly when installing, and from washing your engine.

I believe this was a huge issue with Volkswagen vehicles

Posted on Aug 25, 2009

  • 1 Answer

SOURCE: my 2004 dodge neon sxt

I had the same problem with a Saturn I had and I would check the motor mount. If its coming loose it can damage a lot of other things costing more than what you would need.

Posted on Sep 19, 2011

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