driving Boom Boom Boom Stall
05-22-2009, 03:09 AM
#1
Member
Thread Starter
Join Date: 08-05-06
Location: pittsburgh
Posts: 238
Likes: 0
Received 0 Likes
on
0 Posts
driving Boom Boom Boom Stall
me and my buddy were on the interstate tonight and around 120 mph and 6500 rpm roughly the car went boom a big flame shot out of the exhaust then the car stalled i tapped the gas and all you could here was supercharger so i pull off the side of the road and wait a few minutes and start the car again and it is running fine i didnt do any hard pulls but i did hit full boost does anyone have any idea what happened? did i detonate? maybe a bad plug/coilpack? a little bit of info would be great thanks
05-22-2009, 11:17 AM
#2
Senior Member
Join Date: 10-05-06
Location: DFW, TX
Posts: 2,263
Likes: 0
Received 0 Likes
on
0 Posts
Have you looked in the motor, checked your plugs? If its running fine, then I would *think* that there isnt permanent damage, although a big flame out the back is kind of 
Check your plugs, see if they have anything on them they arent supposed to. My guess is that your cat will be fried, and maybe some o2 sensors as well at the very least.
Check your plugs, see if they have anything on them they arent supposed to. My guess is that your cat will be fried, and maybe some o2 sensors as well at the very least.
05-22-2009, 03:51 PM
#3
Member
Thread Starter
Join Date: 08-05-06
Location: pittsburgh
Posts: 238
Likes: 0
Received 0 Likes
on
0 Posts
Have you looked in the motor, checked your plugs? If its running fine, then I would *think* that there isnt permanent damage, although a big flame out the back is kind of
Check your plugs, see if they have anything on them they arent supposed to. My guess is that your cat will be fried, and maybe some o2 sensors as well at the very least.
Check your plugs, see if they have anything on them they arent supposed to. My guess is that your cat will be fried, and maybe some o2 sensors as well at the very least.
05-23-2009, 02:09 AM
#6
Member
Thread Starter
Join Date: 08-05-06
Location: pittsburgh
Posts: 238
Likes: 0
Received 0 Likes
on
0 Posts
yeah i looked at em they were black around the bottom and the progs looked burnt as **** so i replaced them and now my car is sucking really bad it sound like only the supercharger is turning and **** idunno it has no power im fucked
Last edited by redcobizzylt; 05-23-2009 at 02:09 AM. Reason: Automerged Doublepost
05-23-2009, 02:42 AM
#10
Member
Thread Starter
Join Date: 08-05-06
Location: pittsburgh
Posts: 238
Likes: 0
Received 0 Likes
on
0 Posts
well it ran ok till tonight and it seriously just **** the bed the car sounded like it had a constant blow off valve going had no power all you could here was charger im thinking its something blown not sure what but im pretty sure it is not good no cel's though how should i go about diagnosing this im lost when it comes to major problems and yes the oil smells of gas something fierce
05-23-2009, 03:24 AM
#11
Senior Member
iTrader: (1)
Join Date: 07-27-07
Location: Puyallup, WA
Posts: 17,332
Likes: 0
Received 0 Likes
on
0 Posts
i would start by doing a compression test, that shows ok then you have compression in the cyl which should mean you have good valve seel and such, if it is still compressing just not enough do a wet compression to see if its the rings...if that fixes it then piston ring problem. if that doesnt fix it then would start by pulling the valve cover, check the tops of the valves, then pull the intake mani and check what you can see through the ports, same witht he exhaust. if all seems goodincluding supercharger then pull the head...
thats how i would proceed.. and good luck, keep us updated
thats how i would proceed.. and good luck, keep us updated
05-23-2009, 11:40 AM
#13
Member
Thread Starter
Join Date: 08-05-06
Location: pittsburgh
Posts: 238
Likes: 0
Received 0 Likes
on
0 Posts
i would start by doing a compression test, that shows ok then you have compression in the cyl which should mean you have good valve seel and such, if it is still compressing just not enough do a wet compression to see if its the rings...if that fixes it then piston ring problem. if that doesnt fix it then would start by pulling the valve cover, check the tops of the valves, then pull the intake mani and check what you can see through the ports, same witht he exhaust. if all seems goodincluding supercharger then pull the head...
thats how i would proceed.. and good luck, keep us updated
thats how i would proceed.. and good luck, keep us updated
05-23-2009, 11:46 AM
#15
Senior Member
Join Date: 02-06-07
Location: East Moriches
Posts: 1,644
Likes: 0
Received 0 Likes
on
0 Posts
at first i was thinking you blew out your cat bc that happend to me a while back i was doing a 2nd gear pull and it made loud bang and stalled and threw alot of black smoke. i checked under the hood and all was normal, it started and ran fine i threw an 02 sensore code a week later and well my cat was gone haha.
that was a year ago and shes still running fine, your problem seems alot more serious goodluck getting it fixed
that was a year ago and shes still running fine, your problem seems alot more serious goodluck getting it fixed
05-23-2009, 07:21 PM
#19
Member
Thread Starter
Join Date: 08-05-06
Location: pittsburgh
Posts: 238
Likes: 0
Received 0 Likes
on
0 Posts
update
compression test turned out normal so thats good news
went and bought new plugs 1 step cooler gapped them to .035
still didnt fix the problem so i decided to take the d/p off and when i did this huge ceramic/metal metal hunk of cat fell out so needless to say it was the cat all along .... so i pounded out the cat with a huge bar and blew it out with the compressor and i think she is gonna be just fine........for now.......
thanks everyone for your help
compression test turned out normal so thats good news
went and bought new plugs 1 step cooler gapped them to .035
still didnt fix the problem so i decided to take the d/p off and when i did this huge ceramic/metal metal hunk of cat fell out so needless to say it was the cat all along .... so i pounded out the cat with a huge bar and blew it out with the compressor and i think she is gonna be just fine........for now.......
thanks everyone for your help
05-23-2009, 08:50 PM
#22
Banned
Join Date: 03-09-08
Location: Illinois
Posts: 3,682
Likes: 0
Received 0 Likes
on
0 Posts
Just as an fyi your going to toss a cel, it will be p0420. Whoever did your tuning can block it from popping on.
edit: Also something to consider buying later on down the road would be an egt gauge and or an interceptor.
edit: Also something to consider buying later on down the road would be an egt gauge and or an interceptor.
Last edited by Zach06CobaltSC; 05-23-2009 at 08:50 PM. Reason: Automerged Doublepost
05-23-2009, 10:34 PM
#23
Senior Member
Join Date: 10-05-06
Location: DFW, TX
Posts: 2,263
Likes: 0
Received 0 Likes
on
0 Posts
Have you looked in the motor, checked your plugs? If its running fine, then I would *think* that there isnt permanent damage, although a big flame out the back is kind of
Check your plugs, see if they have anything on them they arent supposed to. My guess is that your cat will be fried, and maybe some o2 sensors as well at the very least.
Check your plugs, see if they have anything on them they arent supposed to. My guess is that your cat will be fried, and maybe some o2 sensors as well at the very least.
Glad you found the problem, time to upgrade that downpipe!
05-24-2009, 01:25 AM
#25
Member
Thread Starter
Join Date: 08-05-06
Location: pittsburgh
Posts: 238
Likes: 0
Received 0 Likes
on
0 Posts
hahah idunno maybe might have had something to do with that and the huge fire ball that lit up like a mushroom cloud haha
Last edited by redcobizzylt; 05-24-2009 at 01:25 AM. Reason: Automerged Doublepost