 |
11-10-2008, 02:51 PM
|
#1
|
Join Date: Jul 2006
Location: Hamilton, Nj/Glassboro, Nj
Posts: 799
|
HELP ME PLZ!
I have a engine misfire. i replaced all the O2 and wires and triple checked to make sure they were all good. I went to advance auto and he scanned it for me and im getting a fuel-air metering code he erased it before i could write down the P number any suggestions 
__________________
93 Civic HB 1.5L-70hp :-p-Sold
94 Camaro Z28-CAI with bellow, LCAS, 3.73 gears, A4, 275/40/zr17-silver Zr1's, Magnaflow Stainless steel exhaust. For Sale-This Spring Best 1/4 Time-13.5-Sold
CURRENT RIDE- 99 Z28 with Ground Effects Slp intake Exhaust and Short Throw shifter- best 1/4 -13.34@105.6 New mods yet to be tested->Pacestter long tubes--->Tune by TTP= 349 RWHP 362 Ftlbs
|
|
|
|
11-10-2008, 03:09 PM
|
#2
|
|
NJFBOA Co-Founder
Join Date: Jul 2004
Location: All up in your kool aid!
Posts: 12,235
|
Did the code appear before or after you changed the O2 sensors? How many miles since you replaced the O2's?
-Tim
|
|
|
|
|
11-10-2008, 04:01 PM
|
#3
|
Join Date: Jul 2006
Location: Hamilton, Nj/Glassboro, Nj
Posts: 799
|
Quote:
Originally Posted by NJSPEEDER
Did the code appear before or after you changed the O2 sensors? How many miles since you replaced the O2's?
-Tim
|
i did the headers about 2 months ago and idk when the code came on because before it only through a code for the rears.
__________________
93 Civic HB 1.5L-70hp :-p-Sold
94 Camaro Z28-CAI with bellow, LCAS, 3.73 gears, A4, 275/40/zr17-silver Zr1's, Magnaflow Stainless steel exhaust. For Sale-This Spring Best 1/4 Time-13.5-Sold
CURRENT RIDE- 99 Z28 with Ground Effects Slp intake Exhaust and Short Throw shifter- best 1/4 -13.34@105.6 New mods yet to be tested->Pacestter long tubes--->Tune by TTP= 349 RWHP 362 Ftlbs
|
|
|
|
|
11-10-2008, 04:06 PM
|
#4
|
Join Date: Nov 2004
Posts: 3,530
|
what kind of plugs did you put in there?
|
|
|
|
|
11-10-2008, 05:19 PM
|
#5
|
Join Date: Jul 2006
Location: Hamilton, Nj/Glassboro, Nj
Posts: 799
|
tr55
__________________
93 Civic HB 1.5L-70hp :-p-Sold
94 Camaro Z28-CAI with bellow, LCAS, 3.73 gears, A4, 275/40/zr17-silver Zr1's, Magnaflow Stainless steel exhaust. For Sale-This Spring Best 1/4 Time-13.5-Sold
CURRENT RIDE- 99 Z28 with Ground Effects Slp intake Exhaust and Short Throw shifter- best 1/4 -13.34@105.6 New mods yet to be tested->Pacestter long tubes--->Tune by TTP= 349 RWHP 362 Ftlbs
|
|
|
|
|
11-10-2008, 06:08 PM
|
#6
|
|
Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,368
|
it was for a bank x, sensor 2?
|
|
|
|
|
11-10-2008, 07:11 PM
|
#7
|
Join Date: Nov 2004
Posts: 3,530
|
some ls1's dont like them for some reason. My car loves them but my dad's vette hated them.
|
|
|
|
|
11-10-2008, 09:20 PM
|
#8
|
Join Date: Jul 2006
Location: Hamilton, Nj/Glassboro, Nj
Posts: 799
|
wow my car ran amazing tonight in the cold pulled harder then ever before it could just be the cold im gonna try switching my fuelfilter maybe thats the problem
__________________
93 Civic HB 1.5L-70hp :-p-Sold
94 Camaro Z28-CAI with bellow, LCAS, 3.73 gears, A4, 275/40/zr17-silver Zr1's, Magnaflow Stainless steel exhaust. For Sale-This Spring Best 1/4 Time-13.5-Sold
CURRENT RIDE- 99 Z28 with Ground Effects Slp intake Exhaust and Short Throw shifter- best 1/4 -13.34@105.6 New mods yet to be tested->Pacestter long tubes--->Tune by TTP= 349 RWHP 362 Ftlbs
|
|
|
|
|
11-11-2008, 04:36 AM
|
#9
|
|
11 second club / Moderator
Join Date: Aug 2004
Location: West Berlin, NJ
Posts: 7,148
|
Quote:
Originally Posted by Camvill
wow my car ran amazing tonight in the cold pulled harder then ever before it could just be the cold im gonna try switching my fuelfilter maybe thats the problem
|
usually no but try it anyways.
Could it be a tuning issue with your long tubes?
__________________
2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
|
|
|
|
|
11-11-2008, 11:54 AM
|
#10
|
Join Date: Jul 2006
Location: Hamilton, Nj/Glassboro, Nj
Posts: 799
|
Quote:
Originally Posted by deadtrend1
usually no but try it anyways.
Could it be a tuning issue with your long tubes?
|
would that create a missfire?
__________________
93 Civic HB 1.5L-70hp :-p-Sold
94 Camaro Z28-CAI with bellow, LCAS, 3.73 gears, A4, 275/40/zr17-silver Zr1's, Magnaflow Stainless steel exhaust. For Sale-This Spring Best 1/4 Time-13.5-Sold
CURRENT RIDE- 99 Z28 with Ground Effects Slp intake Exhaust and Short Throw shifter- best 1/4 -13.34@105.6 New mods yet to be tested->Pacestter long tubes--->Tune by TTP= 349 RWHP 362 Ftlbs
|
|
|
|
|
11-11-2008, 12:02 PM
|
#11
|
|
10 Second Club; Has fan club
Join Date: Dec 2005
Location: Delmont nj
Posts: 4,369
|
i never had any problems after LT install. the car might run a lil rich, but shouldnt cause misfires. i have a handheld OBDII scanner. im going to atco tonight. if u want i could scan your car 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
|
|
|
|
|
11-11-2008, 01:17 PM
|
#12
|
|
Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,216
|
What are all the mods? Do you have cats or not? My 2000 with the longtubes and dual cats was on the edge of the stock computer settings with it adding 12-13% fuel while cruising. Do you have a tune yet? If not, then that might solve your problem. You might also have a weak injector that is causing a lean cylinder and a misfire. Have you had someone scan it while driving? I have the Diablosport that can show some realtime data.
__________________
69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
|
|
|
|
11-11-2008, 05:45 PM
|
#13
|
Join Date: Aug 2005
Location: Millville & Little ferry New Jersey
Posts: 454
|
Air/ fuel metering is front O2 related
Check your O2 extensions and make sure they havent touched any of your exhaust and melted,ect if you used extensions with the headers..
They also share the same fuse as your Maf and can cause problems with either or both..
__________________
2002 Z/28 = Firemutt Racing 370 w/ Cam, Trick Flow heads, TPIS 90mm Intake & 90mm T.B., Vigilante 3600 t.c., Michael's Transmissions Built 4L60E.
QTP Headers, Mufflex Stainless Y-pipe, Pypes Performance Exhaust, Moser 12-bolt w/ 33 spline axles,Truetrac & 3:73's., Spohn.
Cartek Tuned...
|
|
|
|
|
11-12-2008, 07:21 AM
|
#14
|
Join Date: Aug 2004
Location: Hillsborough, NJ
Posts: 2,630
|
I'm gonna second Jeff's suggestion of a possible lazy injector.
__________________
--==RPM Resto & Custom==--
1989 IROC-Z Media Coverage:
Chevy High Performance - Readers Rides 4/03
GM High Tech Performance - Tech Article 3/06
Chevy Rumble - Tech & Feature Articles November 2006
Auto Restorer Magazine - Feature Article 5/11
SkinAndSteel.com
|
|
|
|
|
11-12-2008, 03:11 PM
|
#15
|
|
Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
|
Get it scanned, check which side, try swapping O2s side to side, also might want to do the same with coils. I'd rule them out before you purchase injectors. A weak coil would cause a mis as well.
__________________
93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
|
|
|
|
|
11-13-2008, 10:42 AM
|
#16
|
Join Date: Jul 2006
Location: Hamilton, Nj/Glassboro, Nj
Posts: 799
|
went to jeff's last night and he scanned it no codes though. The car is running very lean though. O2 are working properly. He said he thinks it may be a header gasket leak so i'm going to check that tomorrow morning. Thanks Jeff!
__________________
93 Civic HB 1.5L-70hp :-p-Sold
94 Camaro Z28-CAI with bellow, LCAS, 3.73 gears, A4, 275/40/zr17-silver Zr1's, Magnaflow Stainless steel exhaust. For Sale-This Spring Best 1/4 Time-13.5-Sold
CURRENT RIDE- 99 Z28 with Ground Effects Slp intake Exhaust and Short Throw shifter- best 1/4 -13.34@105.6 New mods yet to be tested->Pacestter long tubes--->Tune by TTP= 349 RWHP 362 Ftlbs
|
|
|
|
|
11-13-2008, 02:14 PM
|
#17
|
|
Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,216
|
It definitely has a miss or thud, thud, thud type of sound/feel. But at idle it's tough to notice any problem. The fuel trims were jumping up to 25-32% under acceleration so I'm thinking a header leak or loose spark plug causing it to read lean and dump extra fuel in. My car would run at 12-13% fuel trim before the tune but I do have dual cats so he has a little less backpressure.
__________________
69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
|
|
|
|
|
11-16-2008, 10:45 PM
|
#18
|
Join Date: Jul 2006
Location: Hamilton, Nj/Glassboro, Nj
Posts: 799
|
Wow. What a relief. I figured it out. I pulled all the plugs and wires last night. One of the connectors inside the wire was too far down for it to reach the connector on the coil pack so i shimmied it up and now its on. I don't feel anymore stumble only around 2200rpm....... Also you cant hear the miss out of the exhaust anymore... Off to a tune! Thanks for all your helps guys especially Jeff.
__________________
93 Civic HB 1.5L-70hp :-p-Sold
94 Camaro Z28-CAI with bellow, LCAS, 3.73 gears, A4, 275/40/zr17-silver Zr1's, Magnaflow Stainless steel exhaust. For Sale-This Spring Best 1/4 Time-13.5-Sold
CURRENT RIDE- 99 Z28 with Ground Effects Slp intake Exhaust and Short Throw shifter- best 1/4 -13.34@105.6 New mods yet to be tested->Pacestter long tubes--->Tune by TTP= 349 RWHP 362 Ftlbs
Last edited by BonzoHansen; 11-25-2008 at 11:57 AM.
Reason: removed useless text
|
|
|
|
|
11-17-2008, 07:58 AM
|
#19
|
|
Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,216
|
That's good. I kept thinking exhaust leak or a cylinder not firing properly. I figured a loose spark plug would cause both.
__________________
69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
|
|
|
|
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
|
|
|
|
|
|
