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Donn Hansen Posted on Nov 21, 2013
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Duramax diesel have a 2005 6.6 duramax it has a load rapping noise which is present 95% of the time. when we hooked it up to a scanner and shut off individual cylinders #4 doesn't effect the idle of the engine. The noise very briefly quiets down and comes back in a couple of seconds any ideas?

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John Tunney

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  • Cars & Trucks Master 887 Answers
  • Posted on Nov 21, 2013
John Tunney
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Joined: Mar 04, 2013
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Most likely a bad injector, you need to check balance rates for the injectors with a scanner. if the rates are farly equal then it is probably a rod bearing but injectors are a common problem that's why they changed the original LB7 duramax(2000-2004) from internal injectors to external so they would be easyer to change.

5 Related Answers

David Shaub

  • 2994 Answers
  • Posted on Mar 15, 2009

SOURCE: engine wont idle unless you keep your foot on the gas pedal

First, try a new accelerator pump. They're less than $10 and easy to install. On the side of the carburator, near the linkage. It's simple a small rubber diaphragm.

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Anonymous

  • 1 Answer
  • Posted on Apr 03, 2009

SOURCE: ford f250 2003 super duty diesel 6L - loss of power and idle fluctuates

icp sensor, definitly. you can get to it but you have to go from the bottom. remove the trans filler tube, and lower the the trans slightly, then you can remove the turbo heat shield and get to the sensor, you will need a 1 1/16" 12 point crows foot socket for the sensor its self.

ryan mcghee

  • 192 Answers
  • Posted on Sep 30, 2009

SOURCE: 2007 chevy silverado 2500 hd duramax shut down

mo me it sounds like low fuel volume i would check my lift pump

toneman2121

toneman2121

  • 775 Answers
  • Posted on Mar 12, 2010

SOURCE: 2005 Vibe, headlight bulbs out until I rap on the

the connector is loose or faulty. to gain access to the connector, there wiil be a locking ring or a rubber cover on the back of the light assembly in the engine compartment.

turn the locking ring ccw, take the socket out being carefull not to touch the glass bulb with your fingers. oil from your skin will create a hot spot on the glass and could break the glass when on because of the intense heat generated. remove and replace the bulb a few times to clean any surface corrosion. this action will also reseat the lamp.

if there is a rubber weather cover, there's a chance that there is a wire gate holding the bulb in place. squeeze the wires together to clear the latch clip on the unhinged end. then do the above procedure.

Testimonial: "Thank you for the information, I have new bulbs to install also to troubleshoot."

elb2512

  • 2 Answers
  • Posted on Mar 19, 2010

SOURCE: mazda cx7 engine noise

just get rid of this car, because you are going to need a new engine soon, my 2007 mazda cx7 with only 33000 miles is at the dealer for engine replacement!!!! only 2 days after i purchased the car

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