V8kilr

well i remember reading some threads on a whine that comes from under the hood area and now my car is doing it,

it used to do it every once and a while just when i shut it off it would let out a little whine

now just today when i fired it up it would let out a whine every once and a while when i was feathering the gas because it was a cold start

it almost reminds me of when my water pump went in my second gen but temps are fine

its like a belt whine but much lower tone,
not that high pitched squel

lmk if any ideas

damon

still have clutch fan if so it may be locked up

or maybe the shutter valve gone

FJ

Even if temps are fine, maybe the pump is on it's way out?
That or an alternator bearing is all I can think of.

-John.

82streetracer

iTrader: (1)

yeah my temps were fine when my pump went out.

V8kilr

ok after driving it for the day i can go a little more into detail,

here it is

if i let the car idle after a short while it will make the whine noise and die,

so even while stopped i have to hold the tach at 1,500

if i let it down below that it will whine and die

it doesnt whine for a while,
instead its a short whine that only last a second and it dies right when the whine starts

almost like it just lost all vacume or like someone cut the spark or fuel

so im guessing its one of the three

while under throttle it responds the same,

but if i try to coast at say 40 mph it will start stuttering and jerking every once and a while,

but once i tap the gas down its fine ?????

any help would be great,

i think its either

fuel
spark
vacume

all which i have never had a problem with before
so im clueless

RotorMotorDriver

iTrader: (1)

Sounds like a shutter valve to me . Its supposed to close off the primary to the rear rotor when decelerating. If it stops working, the carb will let too much fuel into the engine and "flood" it out basically. I think...

~T.J.

V8kilr

now that sounds possible,

its just like the huge vacume thingy on the carb that when i unplug it stumbles hard like i yanked a spark plug wire then it dies,

only it makes this damn noise when it does it


the noise is kinda loud,

i can hear it from in the car with the windows up,
but its hard to hear if it does it while driving

79+80_rx-7

shutter vavle....... the whine, the dieing/not idling, ect...ect...ect... sounds like a shutter vavle..... plug it and see

RotorMotorDriver

iTrader: (1)

I just replaced mine, I could hear it in the car with the widows up too .

FGordon9

Does anything happen if you just take this shutter valve out? I had that same whining problem with my '81 GSL and I swithched it with the shutter valve out of an '85 parts car and the whining stopped, but it is still sucking air while idling. I am wondering if some of the other problems I am having have to do with this shutter valve. The car has a big problem starting when it is cold outside or it has sat for half a day or so. Even when I get it started, if it has not warmed up all the way if I put it in gear or pull the choke out too much, the car just dies.

crankit

Had to block off my shutter valve. So far runs fine. But wasn't stalling before either. But now the 4 barrel works a lot better probably because of curing the vacuum leak at the shutter valve.

RotorMotorDriver

iTrader: (1)

If you dont want to replace it, just plug it. Its a lot of work to get to it, and if your lazy, just plug it.

~T.J.

79+80_rx-7

Maybe you need to take your turbo off......