Doug Hofeldt of Air Bulldog hoods showed me an area that is spot welded at the factory that almost always results in cracked welds, thus leading to mild separation and subsequent noise. This area is located just inboard of the hood hinges where they bolt to the body, just below the cowl area. The verticle spot welded seam on either side is the offending area. The front fenders would have to be removed to weld the effected area. I saw a Ram that had the seams mig welded to correct the problem... end of noise problem. Although the seams usually exhibit good spot welds, the presence of a SMALL amount (AND I MEAN SMALL) of corrosion near each of the spot welds will tell a different tale. EVERY Ram I have checked after this has exhibited the symptoms, including mine.
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'98. 5 2500 QC 4x4, (BLACK) SLT Sport, ISB, LWB, 3. 54 LSD, A/T, Glasstite Vision II canopy, Line-X spray in liner, 285/75R16 BFG A/Ts on 16x8 M/T Challengers, Warn 4X Boards, Mopar fender flares, front and rear NW Custom stainless steel/rubber mud flaps, Mag-Hytec diff. cover and trans. pan, Edelbrock IAS shocks, Mopar tow hooks, Reese Titan V hitch, Jordan Research Ultima 2020 trailer brake controller, VDO Vision gauges, '00 Sport grille, '00 Sport headlights with PIAA Super White 9007/9004 bulbs, 4-2-7+4 Brite-Box, PIAA Dual Sport 900 auxiliary lights, BD exhaust brake and TorqLoc, Prime-Loc fuel filter relocation kit, Bosch 275 hp. injectors, VA CPC, DD Boost Module, Banks Stinger wastegate actuator, BLACK '00 valve cover, Banks Stinger 4" dia. stainless steel exhaust system, BD LV V-10/Cummins hybrid TC and valve body, BD modified transmission front pump and PressureLoc, Air Bulldog induction hood (with NACA ducts), plus many other trick modifications