ryan1994mustang

dont think its the coil, replaced it when i replaced the fuel filter and plugs a couple months ago. i cant tell if it is backfiring from the exhaust or the intake though because it only does it under load, not just revving it up. its not very loud though, and sounds somewhat hollow, not like when you hear an old beater backfire and it sounds like a gunshot. not sure if that tells you anything about where its coming from.

txmustang6933

when you rev at idle will it do it?check your timeing and harmonic balancer if those are ok you may have a rounded cam lobe and i dont know of a way to check that but its an excuse to upgrade. let me know once you figure it out, i'm curious

txmustang6933

check your intake really well, i talked to a friend of mine and he said you could have a cracked intake and its lettin air in

ryan1994mustang

well, the past couple of days it doesnt seem to be doing it nearly as bad, but then again our eather has been in the 70's as opposed to the 30's-40's last week. so it mainly does it when the car is cold, i dont know if that will help out the diagnosis any. but ill def check out the intake really well when i get some light tomorrow.

rmcclafl

Don't worry about the intake being cracked that isnt going to make your exhaust pop. That would give you a vacuum leak and cause the car to run like crap all the time, no its not a cam lobe problem either. It's probably not02 sensors either because they would cause the check engine light to come on.Make sure your mass air flow sensor is clean and check your IAC or idle air control its a little black thing on the side of your throttle body, there's two small bolts that hold it in with a little gasket. Pull it off and clean it with some carb cleaner, use some RTV sealant and put it back on, this should solve the problem.

95greengt

my 95 does the same thing if you figure it out pm me and ill do the same if i figure it out

ryan1994mustang

sounds good. im gonna go get some carb cleaner tomorrow and clean the MAF and IAC and see if that helps out any.

ryan1994mustang

ok. i just got in from cleaning the MAF and it seems to be running much better now. just took it out and sprayed some carb cleaner on it and let it dry and put it back in. i drove around for about 15 mins and id didnt really hesitate at all and no popping noise. thanks for all the help guys.