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International Automotive Technicians Network
Re: 98 NPR 4.7 DIESEL 3SPD AUTO/OD WHISLTES AT SHIFTS
Posted to HD/Fleet Forum on 5/19/2002 3 Replies

No need for YELLING, we hear ya :P Sounds like youve got a boost leak. Not generaly a problem on a 4HE1 motor, but look for a loose turbo hose clamp, or possably a blown intake o ring. Dont forget about the i/c, maybe a crack, but i doubt it. Good Luck Login to read more.

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