g_mau18

I was wheeling my yoda wen i wound up in a ditch, had to rev pretty hard to get outta there, once i was out whenever I rev to 3000 rpms theres a crazy noise. I thought it was the valves, my buddy said to check out my catalytic converter tomorow. any input?

Matt16

What are you driving? engine? tranny?

g_mau18

88 pickup, 22re, have no idea about the tranny

toyota4x4907

" Crazy noise" is a very unspecific term. Maybe try to explain it more?

When I rev my '93 past 4200 rpm, the bolts on the exhaust manifold tend to back out almost instantly. Until you can describe the noise better, check there and the whole exhaust system for cracks/holes missing bolts/etc.

g_mau18

thats what Im going to do tomorow, im thinking it is the headers coming loose or something in my exhaust, bra i jus no like one engine problem cuz I just wen rebilt that one.

drew303

dude, we need more details to have a chance at help'n ya.

And this is a bad time of the year to be hittn Tahuya LOL

I just replaced a shot spindle.. vibrations/noises come from all corners of these trucks. need speicfics!

ovrrdrive

Before I asked for help I'd just listen to the noise and figure out where it was coming from. I bet all you need to do is have someone sit in the seat and rev it while you look around under the hood and under the truck.

When you find the source of the noise then come back and post what it is to get help fixing it.

g_mau18

i tightened all of the bolts on the exhaust manifold, no cracks, no missing bolts, could it be the gasket?

qdude79

Does it make noise when revving up the street, or in neutral? If neutral, you can pretty much rule out drivetrain past the engine (excluding vibrations mentioned). 5spd or auto?

abecedarian

yeah, crazy noise is a vague description. If it sounds like plastic wrap flapping in a 50 miles per hour wind, it may be an exhaust leak. Once a leak occurs, it can damage the gasket and tightening it may not help. If you drug the pipe in the dirt, you may have damaged the downpipe (from the upper manifold, down to the exhaust pipe / converter) or the flange on the bottom of the manifold.
if you're only hearing it around 3000, your timing guide may have just happened to break at the same time and the chain may be hitting the timing cover.

Tofer

let me know if you want help locating the source of the noise...