|
|
LinkBack | Thread Tools | Display Modes |
#1
|
||||
|
||||
Help: cars backfiring/hestiating when on boost
hey guys a couple of weeks ago my clutch started slipping when i hit boost, it would also backfire and sit at(like it was redlining) 4000rpm if i gave it shit. i just thought that the backfiring was due to clutch problems, but now that ive put a new clutch in it is still backfiring, coughing and spluttering whenever the accelerator goes down...
dads a mechanic, and he thinks its something to do with the ignition side of things (eg. spark plugs), but i pulled them out and there fine but if anyone can help it will save me $198 to get subaru to plug it into their diagnosis machine I drive a MY00 limited GC8 Observations: -idles fine -will drive without boost fine -still backfires with the intercooler off (dad did it for some reason) -gets worse in colder weather -will backfire if i pump the accelerator when i am cruising in gear Mods: -3"TBE -silicone turbo pipe -apexi pod filter -exedy OEM replacement clutch (if that helps)
__________________
Winning the award for slowest build in history. Last edited by Daaaamien; 13-03-2009 at 01:42 PM. |
#2
|
||||
|
||||
Air Flow Meter playing up - you have a pod filter.. its THE most common problem with the GC8's and aftermarket filters/blow off valves
__________________
[SIGPIC][/SIGPIC] |
#3
|
||||
|
||||
have yoU checked all your intercooler piping i had a similar problem when i had a split Y-pipe? and when my coil pack on my gc8 started to fail...
__________________
[COLOR="Blue"]If anyone needs T.I.G or M.I.G or small custom fabrication jobs done PM me.[/COLOR] |
#4
|
||||
|
||||
if its the MY00 in your avatar, then air flow meter needs replacing would be my bet
__________________
MY93 Impreza GX 1.8L, 0hp, 0nm |
#5
|
|||
|
|||
backfiring
If you want to try another coilpack,I have a spare one you can borrow to try out.
Terry 0418925005 |
#6
|
||||
|
||||
+1 for AFM
Have you checked your injectors??
__________________
....slow and steady wins the race....fark that!! |
#7
|
||||
|
||||
Quote:
Try AFM first, faulty coil pack is more likely to cause misfire, rather than backfire |
#8
|
||||
|
||||
Quote:
__________________
....slow and steady wins the race....fark that!! |
#9
|
||||
|
||||
hey thanks guys
I'm going to try the spare coil pack to start off with and also would it be an idea to take it to subaru before i buy a new AFM? considering the price of one? or is it definitely the AFM?
__________________
Winning the award for slowest build in history. |
#10
|
||||
|
||||
You can pretty guarantee its the AFM on my99/00 models. Buy a new one. They aren't all that expensive. Around $200 IIRC for smooth trouble free driving and no risk of blowing your engine if you decide to give some boot.
__________________
RS Liberty - Because WRX's are only good for parts... |
Tags |
backfiring or hestiating, boost, cars |
|
|