1999 Navigator Help Please

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Sep 4, 2013 | 03:14 AM

mrflowmotion

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1999 Navigator Help Please

I have a1999 Navigator 4x4 over 240kmiles. Excellent truck. Never had any issues until now. I took to dealer for a bumping noise coming from the rear. The dealer said the problem was my #5,7 ignition coils...Yeah right! BS. I have put all new tires, brakes, rotors, front/rear suspension. Checked drive line, knuckle. The bumping noise sounds as if it is coming from underneath rear of vehicle. The noise only comes during driving and when I'm accelerating whether it's slow or fast acceleration. Once I'm at speed the noise is no more. I can also feel the bumping noise. It almost appears as if something is wallowed out. I have taken my baby to the dealer, suspension shop, tire and wheel shop, tranny shop. None can find the problem or give me some indication of what it might be. Can any one here please help me? Thank you

Sep 4, 2013 | 10:43 AM

alloro

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Possibly the driveshaft according to TSB 05-26-10
Driveline Clunk - Bob Is The Oil Guy

Sep 4, 2013 | 11:04 AM

ajonesnv

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Joined: Mar 2012

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From: Nevada

Quote:

Originally Posted by mrflowmotion

Are you sure its from the rear? I ask because I had a shudder on my 4Runner that I swore was from my Tranny that was a result of bad plugs. i.e., a bad fire from the coils under load could possibly be the issue.

I would also inspect the gears in the rear diff, joints in the drive shaft, possibly.