Loud engine noises - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 14 (permalink) Old 10-28-2007, 02:04 AM Thread Starter
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Loud engine noises

Ok Engine and Tranny gurus,

I filled the tank up this afternoon with diesel not gas went into the store and came back out and started the truck up. I noticed that there was this noise coming from the engine area it seemed want very loud so i proceeded on. I was driving hwy speeds 70ish and everything seemed ok all the gauges looked normal. I stop at another store and the noise had gotten a little louder. It was still shifting into gear fine and the engine wasnt laboring or anything so i drove home. By the time i got home the nosie was sever iam not sure as to where its coming from if i rev the engine the nosie goes away and all seems good. But when i let off the throttle it comes down to idle and rattles like hell, but the engine seems to idle ok. When i put it into gear it gets worse, but the tranny is going into gear :shrug: . It kinda sound like when you leave a connetor off the valve cover gasket and it sound like s**t. The SES is not coming on either. Could it be the convertor??

Sorry its so long
Thanks in advance
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post #2 of 14 (permalink) Old 10-28-2007, 03:09 AM Thread Starter
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Maybe an injector going bad. But it doesnt smoke black or white
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post #3 of 14 (permalink) Old 10-28-2007, 03:53 AM
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Common thing to happen if its an automatic the flexplate cracks around the mounting bolts behind the metal ring and it fattles like **** untill you put it in gear or rev it up. Iv changed 5 and mine was cracked when i pulled my motor a few weeks ago.
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post #4 of 14 (permalink) Old 10-28-2007, 03:53 AM
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Common thing to happen if its an automatic the flexplate cracks around the mounting bolts behind the metal ring and it rattels like s**t untill you put it in gear or rev it up. Iv changed 5 and mine was cracked when i pulled my motor a few weeks ago.
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post #5 of 14 (permalink) Old 10-28-2007, 04:08 AM
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of course it rattles its a diesel. just kidding, yeah i agree with macktruckdriver. it sounds like the flex plate. i have a buddy with a dodge and he broke the center out of his. sounds like yours is doin the same his did.

Erik, 2001 psd 4x4 lariat ext cab pulling truck
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post #6 of 14 (permalink) Old 10-28-2007, 04:03 PM Thread Starter
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Would you be able to see it if its cracked out around the center. I looked at mine and rotated the engine and i didnt see any cracks from the bolts that hold the converter on or on the face of the plate. It did seem to wobble a little bit, dont know if thats normal
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post #7 of 14 (permalink) Old 10-28-2007, 04:34 PM
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You won't be able to see the cracks when it is together. I would also think that it should not wobble at all.

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post #8 of 14 (permalink) Old 10-28-2007, 05:44 PM Thread Starter
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I think maybe its the flex plate i can shift the plate and the motor doesnt move all the time then it will catch and spin the motor.
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post #9 of 14 (permalink) Old 10-28-2007, 07:31 PM
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i would be safe to say there is your problem

Erik, 2001 psd 4x4 lariat ext cab pulling truck
Ts 140hp 6pos chip, 100hp split shots, stealth 2 pump,h2e turbo, tranny, afe stage 2,
5" exhaust turbo back, 10" stack, 3.9k mod on a switch, shimmed fpr,hx crossover hose, tc lock up switch. Custom weight rack and ladder bars, f550 springs, custom paint,5%+15% window tint, clear lights,custom billet grille, very big stereo, 20x10 moto meatals wrap with 33x13.50x20 ss iroks
.


1996 2500 12v 2wd auto reg cab, flat bed, afc mods, sdx 140hp sticks, 4gsk, 60lbs springs, 191dv's, head studs, 16* timing, phat shaft 62/65/14 no plate, exhaust, intake, tanny, auto meter, adjustable overflow valve.

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post #10 of 14 (permalink) Old 10-28-2007, 07:41 PM
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I have seen a torque converter do that as well. I see you have a 99 and I think there was a service bulletin about that on the early superdutys. you might check you local ford dealer about it.

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