i installed a cold air intake on my 4.6 lt and approx two weeks later i have this sound that sounds like a air pump doing something funny (very loud) and makes the rpm's go up and down ..anyone have this problem ,know whats going on or know a fix....hopefully i explained this right..thanks to fx4 matt for the invite tothis site..sorry for not saying hello first guys..great to be here.
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its an in expensive brand i bought off of e-bay..i think i paid about 80.00 came with polished pipe fittings clamps hoses air filter and heat sheild,the truck has approx 160.000kms on it runs good i just put dual exhaust on it to..everything seems to be tight and assembled well..i dont think i have any vacuum leaks ..whats a iac valve?? sorry
thanks for all the great info i will try those tips and let you know,thanks again
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