I think the shop trashed my idler pulley
Out of nowhere, I'm hearing this horrid sound from the engine area.. Sounds like it might be my upper idler, though it's not a sound I've heard from a pulley before, almost like the rattling/vibrating/pulsing sound from someone touching a subwoofer cone while it's pumping bass.. doesn't change with rpm's(same from 800-4,500 rpm) and disappears after 1 minute(almost like clockwork both times), only did it a couple times, once warm engine, once cold. I'm used to the grinding, metal on metal and squealing/squeaking from pulleys and being either continuous or sporadic and brief. I'm hoping it's just that and not my still fairly new alternator or the a/c compressor.
Of course there's been a couple gallons worth of coolant spilled over that whole area from previous thermostat gasket failures so I'm hoping it's that making it pulse(?). Either that or the shop overtightened the belt and trashed it...
*rant time* Why does karma have it out for me lately? A mysterious knocking out of knowhere that doesn't seem to fit any one problem, a possible dying pulley, insanely sporadic and erratic shifting starting in the middle of rush hr freeway traffic, and being sick for holiday parties.. Happy friday the 13th, I guess
1995 ZJ ltd, 4.0 i6, *cough stock cough* 253,xxx and still pumping strong
1998 Chevy Cheyenne K1500, 5.7L Vortec, mostly stock
*In peace, sons bury their fathers. In war, fathers bury their sons. - Herodotus
Originally Posted by JasonStebbins
We can call it the Whoosh King Catalog System. :D