92mustang5.0

been having a problem with my engine stalling when i come up to a stop. down shift to like 1st gear, pushin the clutch to stop and the engines just dies on me. does this at idle to. engine rpm's loop up and down almost to a stall. any suggestions? thanks.

PRO50SC

Try cleaning the IAC motor and the t/b.

2 kwik

while it's off the egrt valve and the maf..run some seafoam thur the intake

92mustang5.0

IAC motor? dont want to sound dumb, but where is that at exactly? not too new to mustangs. i've had mine for about 4 years. not had to do much to it but a clutch. just been putting some add ons to it the past year.

88stangaruu

Its on the front side of the throttle body, its a long cylinder looking thing with a wire plugged up to it at the bottom. Just take it off, there are two screws holding it on. Spray some gunk carb cleaner into it and let it sit and keep doing it till its nice and clean inside, all the black carbon gone, etc. Then just put it back on and go.

92mustang5.0

thanks. i'll give that a try.

samseed101

Here's a pic that may help a little (or at least get you pointed in the right direction.)

It's not a very good pic, but you can see the top of it here. Theres a screw at the top and a screw at teh bottom. Remove the wire harness and the two screws and it should come right off. Then just clean the IAC and the TB and you should be all set.

TAPOUT

My O2 sensors went out, and I was having the same problem.

92mustang5.0

i removed the iac and cleaned it and the tb. didnt really help much, got alittle better, but not much. i thought once before it could be the O2 sensors.

88stangaruu

clean your o2's. Just take a sterno torch, and when you take them out of the car, just burn the tip of them till they turn white or beige. Thats what i did to mine when my car was running sh*tty rich and the idle was a little rougher than usual. Now it runs like a top.