I've looked through a ton of threads on here about strange noises, but I haven't found one with the issues I'm having. I have 98 GC 4x4 with 5.2, a 2" lift and 31" tires. It has 107K. I've owned it for about 2 months. When I'm in park I can accelerate and the engine sounds great. When I'm on the road and I accelerate, there is a tonal whistle that sounds like it is coming from the drivers side engine area. I've made several long distant trips and the sound always seems to go away when I'm not accelerating. Anyone have any ideas or experienced this problem before?
mine started doing it when i put in a high flow air filter (K&N). its like air whistling through the intake or the air filter. the reason it might not be doing in in neutral is cause when your revving your engine in neutral it doesn't require that much gas/air to get it going but when your going down the road its taking in alot more air when you got your foot down.
also our 415 v10 ford in out motorhome does it after we put a K&N in that too.
Try tightening down your carburetor. You may have moved it or loosened it when installing the K&N and air is getting in under it through a thin space casing a reed like whistling. Ask me how I know - I have a spacer under my carb and it wears out and whistles under acceleration until I replace it.
'95 ZJ Ltd. White 4.0L
TW DC DS; ARB Bull Bar, F&R Air Lockers; Superior Axles; Warn Winch; 4.56 gears; ACOS, Addco F&R Sw Bar, JKS Discos, Rr Track Bar & Nerfs, 249>242 Swap, Stillen rotors+Kolak pads, 3 pc. Armor, RE 4.5 Kit + 2.5"BB, Adj. UCAs&LCAs, OME SS, Bilstein 5150s, 15x8 AR Diamond Backs, 33 Truxus MTs, K&N FIPK, RE 62mm TB, Perf. Distr. 4.0L Kit, Exhaust: 2.5" Kolak exhaust FM 70: Optima Yellow, Mean Grn Alt., PIAA 520s, 540s, Kevins Rack, & TB Conversion
its be doing it ever since i got it, like a month ago, and ive put 2000 mi on with no problem, but i think the tranny is going, so im gonna put some sealers and chage the fluids in it. any other advise to keep the transmission from giving out?