 |
10-28-2006, 05:59 PM
|
#1
|
|
Resident Camera Guy
Join Date: Aug 2004
Location: North Jersey
Posts: 10,971
|
Sputtering & back-firing
A new thing I have discovered with my car is it holds no power above 3k RPM's. It will buck & backfire, and not do anything. The problem is its inconsistant. The past few days, if I let the car warm up properly, its fine. But if its running cold, or too hot, it does this ****. And today it got to the point where the car doesn't even want to drive. It started constantly backfiring.
Its a MadZ28 tune for 91+ octane, and so far Ive only gone to one gas station for there Ultimate 93. Any suggestions?
Tommorow Im going to check and change my spark plugs & possibly even the wires. If it continues tommorow, are there any suggestions to what it could be? Bad mass air sensor? Poor tune?
__________________
|
|
|
|
10-29-2006, 12:14 PM
|
#2
|
|
Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,476
|
Any codes?
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
|
|
|
|
|
10-29-2006, 12:20 PM
|
#3
|
|
10 Second Club; Has fan club
Join Date: Dec 2005
Location: Delmont nj
Posts: 4,369
|
hmmm, i dont wanna compare lol, but my buddy with a mustang had similar problems. his MAF was dirty. i cleaned it up with some q tips and alcohol. another friend with a mustang had TPS problems and that sounds like it could be it too, or maybe it jumped time? start with the basics tho, scan for codes and work from there!
__________________
01' Z06 62k miles. Vararam, Longtubes, off road xpipe, tuned by me. Times TBA
2001 Corvette, Bolt ons , tuned 10.75@124.56 mph 1.38 60' Sold
1997 Saturn Sc1 5spd DOHC swapped
Bolt ons, decked head, stock intake cam on exhaust side, lotsa weight redux
13.22@102.32 mph 1.93 60'
12's on moda? One day
Last edited by 98tadriver; 10-29-2006 at 12:22 PM.
|
|
|
|
|
10-29-2006, 12:23 PM
|
#4
|
|
Resident Camera Guy
Join Date: Aug 2004
Location: North Jersey
Posts: 10,971
|
Well as far as a check engine light, then no.
I don't know how to read codes off the car.
__________________
|
|
|
|
|
10-29-2006, 01:02 PM
|
#5
|
|
12 Second Club
Join Date: Sep 2004
Location: Vineland
Posts: 928
|
Possible fuel delivery issue...maybe the pump is going? I suppose if the TPS had a dead spot or a two it could cause it...MAF could if its dirty like Ron said...
if youve got a schrader valve on the fuel rail (i dont know if LT1s do or not)...put a fuel pressure gauge on her while youre driving...and watch what happens when it starts to buck and what not.
And I don't know much about opti-spark either but couldn't that be a problem?
__________________
87 iroc with the usual go fast stuff
heavier than your half ton.
|
|
|
|
|
10-29-2006, 03:52 PM
|
#6
|
|
Resident Camera Guy
Join Date: Aug 2004
Location: North Jersey
Posts: 10,971
|
I'll check everything you guys mentions, anyones guess is def better then mine 
The thing that bothers me is how its in-consistant.
__________________
|
|
|
|
|
10-30-2006, 03:20 AM
|
#7
|
|
2007 Member of the Year
Join Date: Oct 2004
Location: Seabrook, TX
Posts: 14,281
|
Opti?
__________________
WF=DF
Kommandant of the ACL (Anti Canadian League)
Quote:
Originally Posted by LTb1ow
Junk the pos, spend the money on beer, acquire headache.
Same result cept this headache doesnt last months.
|
|
|
|
|
|
10-30-2006, 12:46 PM
|
#8
|
|
11 Second Club
Join Date: Jan 2005
Location: Fishkill, NY
Posts: 1,278
|
How new is the opti?
__________________
-Nick
9/11/01- Never Forget
2002 Pontiac Trans-Am WS6 # 206
Chasing 10's
469RWH/437RWTQ
11.05 @ 123
|
|
|
|
|
10-30-2006, 02:31 PM
|
#9
|
|
Resident Camera Guy
Join Date: Aug 2004
Location: North Jersey
Posts: 10,971
|
its a brand new summit unit. Full system. I let the car warm up this morning for about 10 minutes, drove it and everything was fine.
Saturday was the worse it has ever been with back-firing.
__________________
|
|
|
|
|
10-31-2006, 08:01 AM
|
#10
|
|
.
Join Date: Feb 2006
Posts: 1,385
|
Fuel filter almost clogged - jz
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
|
|
