Exhaust poping when idleing down
- Thread starter ga94gt
- Start date
Mine did that when I had straight pipes. it still does it a little, but not bad.
When I had my straight pipes, if I would downshift and the tach would go to like 4K then it would sound like a shotgun. lol
When I had my straight pipes, if I would downshift and the tach would go to like 4K then it would sound like a shotgun. lol
haha that's funny, I have same problem , once I was in the first gear for like 10 sec. above 4000 rpms and when took foot off the skinny pedal it backfired so bad I thought something exploded. I have offroad H pipe and wasn't so bad but since couple months ago it started getting worst cause my vacuum leak(I think). Maybe is time to change o2 sensor ?
GTA_V6_Mustang
Active Member
My car did the same thing until I did a smog delete, then the sound went away. Never understood what removing the smog had to do with it, but it went away with the delete.
Smog pump introduces fresh air into the cats to burn off excess fuel in the exhaust, which possibly explains why the popping noise went away after your delete.
Pretty much the purpose of the smog pump, to burn off those extra hydro carbons to improve emmissions.
No ... not really fair to say ... "All cars do it"
If you look at the basic operation of the Stang pcm ......
it has fuel shut offs to prevent that from happening on decell
and
Those shut offs help to save gas as well
My little 95 didn't do it when it was stock and it doesn't do it now
Grady
GTA_V6_Mustang
Active Member
I never get credit for anything...Similar threads
