Please Help!!!!!!!!!!!!!!!!!!!!!!!!!!

[vwracer14]

i just bought a 97 sonoma and when i give it gas it sounds like a real high wind(sitting still or driving)and its buging the piss out of me


i first thought it was the muffler but i have also heard it could be a fan


it goes sssssssssssssssshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh h then i let of the gas and it goes quiet



if any on can help please tell me

[vwracer14]

update......................


now the noise will go and come every now and then


if any one knows what it is i would appreciate it


its loud enough that you can hear it with the windows up and radio on

[crossman83]

Park your truck and keep it running. Open the hood and turn the throttle linkage so that the engine revs slightly, if you don't know how to do that have someone sit in the drivers seat and slightly rev the engine while you try to pinpoint where the sound is coming from. The first thing that comes to mind is your air intake. Check that and see if there are any leeks anywhere.

[maxwedge]

Originally Posted by vwracer14

i just bought a 97 sonoma and when i give it gas it sounds like a real high wind(sitting still or driving)and its buging the piss out of me


i first thought it was the muffler but i have also heard it could be a fan


it goes sssssssssssssssshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh h then i let of the gas and it goes quiet



if any on can help please tell me

Engine off, warmed up, check the fluid drive fan clutch on the water pump, spin it by hand should turn a blade or 2 freely, if very tight it is locked up hence wind like noise.

[vwracer14]

update.............so i was driving my truck and it finaly blew an exhaust gasket and i could finaly tell what it was


turns out the catalytic converter was stoped up which is what i suspected but i didnt want to spend $200 until i was sure






so thanks for everyones help now all i have to do is mount that damn receiver on it

[woody6725]

$200? that's a free fix. take it off, jam a crowbar through it, hollow it out, and put it back on. make sure you get everything out of it though, because if not pieces will break off and rattle around in there. did that on my 94 blazer when we still had emissions checks down here and it still passed. readings were higher than "ideal" but still well within specs. between that and the flowmaster exhaust everyone thought i had a 350 in it! not stupid loud, but had a nice deep rumble to it.

[vwracer14]

speaking of witch ive noticed a rattle in my exhaust.it only starts when i hit the gas kinda hard and at around 70.it sounds like someone is throwing rocks down the exhaust



any opinions would help......thanks