Loud Pop, Pulseing Idle
#1
was cruiseing at about 40 MPH tonight when all of a sudden i heard a loud pop, didnt think much of it untill i stopped to get a hamburger, my idle was all over the place, anywhere from 1,200RPM's down to 200. decided it was time to get home, so i headed home, about a block and a half away the car died when i let off the gas, that made me somewhat concerned, but it started right back up, got home and popped the hood, and the idle was still all over the place, and i can hear a hissing of air i think when the idle goes up... im stumpped, anyone have any suggestion's?? i've checked vac line's, anything suspension related (because of the pop) and pretty much everything i can think of and im out of stuff to check
#3
The "pop" may have been a vac line blowing off, it is really hard to check all the vac lines without taking the upper and middle intake manifolds off. My guess is the pulsing idle is a result of a vacuum leak somewhere.
#9
it almost sounded like when my spark plug in my pickup shot out, it was pretty loud and i heard it over my stereo, it damn near sounded like my tire blew, i actuly stopped and checked, but i havent driven it since it happend and spent about an hour last night trying to find it but i cant seem to find anything out of place