Maint. blues
I once got 302 codes, changed out the plugs and coil, to no avail. I read before that the engine can sometimes mistake which cylinder it codes for. However, my code has been gone for 6 months now, with a "ready" signal even being sent to the scangauge, so I can't really troubleshoot the remaining slight shudder very easily.
-
Trail X - Founder
- Posts: 9925
- Joined: Mon Sep 07, 2009 10:22 pm
- Location: VA, Roanoke
- Name: James Downing
- Vehicle Year: 2005
- Vehicle: Chevrolet TrailBlazer
- DriveTrain: 4WD w/ Aftermarket Locker
- Rank: Expedition Guide
I totally agree.JamesDowning wrote: I can't really troubleshoot the remaining slight shudder very easily.
#2 coil is confirmed as bad. Swapped 2 with 3 then 3 with one and got PO303 then PO301 after the first PO302.
Now I question the remaned coils I changed with earlier and do I change just one or break the bank for six new ones?
- bgwolfpack
- Veteran
- Posts: 1794
- Joined: Fri Sep 18, 2009 7:19 pm
- Name: Randy
- Vehicle Year: Other
- Vehicle: Other Vehicle
- DriveTrain: 4WD
bgwolfpack wrote:I totally agree.JamesDowning wrote: I can't really troubleshoot the remaining slight shudder very easily.
#2 coil is confirmed as bad. Swapped 2 with 3 then 3 with one and got PO303 then PO301 after the first PO302.
Now I question the remaned coils I changed with earlier and do I change just one or break the bank for six new ones?
I have a spare coil I intended to keep as a trail spare around here somewhere. You're free to borrow it.
Or just come swap a coil with me, mine all work fine.
11 Silverado LTZ - 6.2L/6l80, 2/3 drop, self tuned
85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
02 TrailBlazer LTZ - 35s, lockers, balls - Gone but not forgotten - Build
85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
02 TrailBlazer LTZ - 35s, lockers, balls - Gone but not forgotten - Build
-
fishsticks - Moderator
- Posts: 4356
- Joined: Thu Apr 01, 2010 11:30 pm
- Location: WA, Vancouver
- Name: Donny
- Vehicle Year: Other
- Vehicle: Other Vehicle
- DriveTrain: 4WD w/ Aftermarket Locker
- Rank: Extreme Offroader
That's a pretty damn nice offer Donny. I'll let you know.fishsticks wrote:
I have a spare coil I intended to keep as a trail spare around here somewhere. You're free to borrow it.
Or just come swap a coil with me, mine all work fine.
- bgwolfpack
- Veteran
- Posts: 1794
- Joined: Fri Sep 18, 2009 7:19 pm
- Name: Randy
- Vehicle Year: Other
- Vehicle: Other Vehicle
- DriveTrain: 4WD
put my new Bilstein struts on today, flipped my UCA's, rotated my tires and installed Mark's top spacer.
My first strut had the little allen head rusted/stripped out, I had a time getting it off. Nothing went as planned. It took about 6hrs but it is done and rides better. Now to get some washers/spacers for the Skyjackers and do the rears.
Going to try to get alignment next week as well.
My first strut had the little allen head rusted/stripped out, I had a time getting it off. Nothing went as planned. It took about 6hrs but it is done and rides better. Now to get some washers/spacers for the Skyjackers and do the rears.
Going to try to get alignment next week as well.
"Please consider a search before posting. Folks on this site PIONEERED functional offroad use of these trucks."
The answer to many common lift questions can be found here
My Build Thread
The answer to many common lift questions can be found here
My Build Thread
-
navigator - Moderator
- Posts: 4651
- Joined: Wed Mar 09, 2011 10:16 am
- Location: NC, Winnabow
- Name: Chris
- Vehicle Year: 2006
- Vehicle: Chevrolet TrailBlazer
- DriveTrain: 4WD
- Rank: Trail Ready
Bleh...
Was outside my truck today while it was idling... and I heard it.
I have the random miss too.
No codes, and subtle enough that you wouldn't notice it from in the cab. But I can hear it through the exhaust...
Wonder if that's why my mpg is in the 11s...
Was outside my truck today while it was idling... and I heard it.
I have the random miss too.
No codes, and subtle enough that you wouldn't notice it from in the cab. But I can hear it through the exhaust...
Wonder if that's why my mpg is in the 11s...
11 Silverado LTZ - 6.2L/6l80, 2/3 drop, self tuned
85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
02 TrailBlazer LTZ - 35s, lockers, balls - Gone but not forgotten - Build
85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
02 TrailBlazer LTZ - 35s, lockers, balls - Gone but not forgotten - Build
-
fishsticks - Moderator
- Posts: 4356
- Joined: Thu Apr 01, 2010 11:30 pm
- Location: WA, Vancouver
- Name: Donny
- Vehicle Year: Other
- Vehicle: Other Vehicle
- DriveTrain: 4WD w/ Aftermarket Locker
- Rank: Extreme Offroader
Yea same here Donny, no codes either...
Build Thread
Back to stock, had fun while it lasted...
Back to stock, had fun while it lasted...
- janesy86
- Veteran
- Posts: 1291
- Joined: Thu Sep 10, 2009 2:29 pm
- Location: MA, Salem
- Name: Nick Janes
- Vehicle Year: 2007
- Vehicle: Chevrolet TrailBlazer
- DriveTrain: 4WD w/ G80
- Rank: Offroad Rated
We have a 08 chevy 6.0 at work, it has the same thing happening, but it shows no signs of anything wrong. Just a random idle miss.
-
chevycrew - Veteran
- Posts: 1088
- Joined: Tue Mar 08, 2011 2:42 pm
- Location: UT, Salt Lake City
- Name: Steve
- Vehicle Year: 2002
- Vehicle: Chevrolet TrailBlazer
- DriveTrain: 4WD
- Rank: Trail Ready
I notice mine most if creeping forward (like at a red light). For some reason the drive shaft/axle/engine system seems to resonate at the miss frequency, but only noticeable when creeping ever so slowly.
Donny, your mileage could be mainly due to the winter temps. The engine loses a lot of energy when warming up the block, which yields terrible mileage especially on short drives.
Donny, your mileage could be mainly due to the winter temps. The engine loses a lot of energy when warming up the block, which yields terrible mileage especially on short drives.
-
Trail X - Founder
- Posts: 9925
- Joined: Mon Sep 07, 2009 10:22 pm
- Location: VA, Roanoke
- Name: James Downing
- Vehicle Year: 2005
- Vehicle: Chevrolet TrailBlazer
- DriveTrain: 4WD w/ Aftermarket Locker
- Rank: Expedition Guide
JamesDowning wrote:I notice mine most if creeping forward (like at a red light). For some reason the drive shaft/axle/engine system seems to resonate at the miss frequency, but only noticeable when creeping ever so slowly.
This is when mine does it. It's done it ever since Ive owned it at a lot of red lights.
I averaged 17.4 mpg all last Summer............Ive been Btwn 13.9-14.1 all this Winter. Terrible.
- bdp1978
- Trail-Blazer
- Posts: 253
- Joined: Fri Oct 22, 2010 12:32 pm
- Location: Rochester Hills, Mi
- Name: Brad
- Vehicle Year: 2004
- Vehicle: Chevrolet TrailBlazer
- DriveTrain: 4WD w/ G80
aren't the winter blends a little different than the summer blends as well?
"Please consider a search before posting. Folks on this site PIONEERED functional offroad use of these trucks."
The answer to many common lift questions can be found here
My Build Thread
The answer to many common lift questions can be found here
My Build Thread
-
navigator - Moderator
- Posts: 4651
- Joined: Wed Mar 09, 2011 10:16 am
- Location: NC, Winnabow
- Name: Chris
- Vehicle Year: 2006
- Vehicle: Chevrolet TrailBlazer
- DriveTrain: 4WD
- Rank: Trail Ready
I believe it vary's from local but here the it's quite noticeable.navigator wrote:aren't the winter blends a little different than the summer blends as well?
- bgwolfpack
- Veteran
- Posts: 1794
- Joined: Fri Sep 18, 2009 7:19 pm
- Name: Randy
- Vehicle Year: Other
- Vehicle: Other Vehicle
- DriveTrain: 4WD
Could be a blend change, but in past winters Ive always stayed in the 16-17 range.
- bdp1978
- Trail-Blazer
- Posts: 253
- Joined: Fri Oct 22, 2010 12:32 pm
- Location: Rochester Hills, Mi
- Name: Brad
- Vehicle Year: 2004
- Vehicle: Chevrolet TrailBlazer
- DriveTrain: 4WD w/ G80
I have that same intermittent miss.. Had it for a long time now, with no codes and many things replaced. I notice it while outside of the rig, or while learching forward like James was saying. I just keep waiting for something to break so I know what to fix.
-
OregTrailBlazin - Off-Road Vendor
- Posts: 610
- Joined: Wed Sep 09, 2009 2:34 pm
- Location: OR, Grants Pass
- Name: Johnathan Kurz
- Vehicle Year: 2004
- Vehicle: Chevrolet TrailBlazer
- DriveTrain: 4WD
Got a code this morning... Off to the parts store.
11 Silverado LTZ - 6.2L/6l80, 2/3 drop, self tuned
85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
02 TrailBlazer LTZ - 35s, lockers, balls - Gone but not forgotten - Build
85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
02 TrailBlazer LTZ - 35s, lockers, balls - Gone but not forgotten - Build
-
fishsticks - Moderator
- Posts: 4356
- Joined: Thu Apr 01, 2010 11:30 pm
- Location: WA, Vancouver
- Name: Donny
- Vehicle Year: Other
- Vehicle: Other Vehicle
- DriveTrain: 4WD w/ Aftermarket Locker
- Rank: Extreme Offroader
P0302 - Cylinder 2 Misfire
Parts: 6 AC Delco 41-103 + anti seize + boot grease = $58 after tax.
Time to complete: ~20 mins (body lift + short ram intake = cheating) + 1 minute apologizing to wife for working on truck in new coat.
Beers required: 1
Old Plug Type: Autolite XP Iridium (.049 spec gap)
#1 Gap: .052
#2 Gap: .059 (Ah ha)
#3 Gap: .053
#4 Gap: .052
#5 Gap: .053
#6 Gap: .054
Old plugs looked good on color. No signs of valve cover leaking.
New plugs in at .043 gap.
Broke one brittle wire harness clip.
Problem solved, idles smooth like butta.
Parts: 6 AC Delco 41-103 + anti seize + boot grease = $58 after tax.
Time to complete: ~20 mins (body lift + short ram intake = cheating) + 1 minute apologizing to wife for working on truck in new coat.
Beers required: 1
Old Plug Type: Autolite XP Iridium (.049 spec gap)
#1 Gap: .052
#2 Gap: .059 (Ah ha)
#3 Gap: .053
#4 Gap: .052
#5 Gap: .053
#6 Gap: .054
Old plugs looked good on color. No signs of valve cover leaking.
New plugs in at .043 gap.
Broke one brittle wire harness clip.
Problem solved, idles smooth like butta.
11 Silverado LTZ - 6.2L/6l80, 2/3 drop, self tuned
85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
02 TrailBlazer LTZ - 35s, lockers, balls - Gone but not forgotten - Build
85 Hilux - 3RZ, dual cases, caged, 40s, chromo everything
02 TrailBlazer LTZ - 35s, lockers, balls - Gone but not forgotten - Build
-
fishsticks - Moderator
- Posts: 4356
- Joined: Thu Apr 01, 2010 11:30 pm
- Location: WA, Vancouver
- Name: Donny
- Vehicle Year: Other
- Vehicle: Other Vehicle
- DriveTrain: 4WD w/ Aftermarket Locker
- Rank: Extreme Offroader
SONOVA!!! 
Less than 2 weeks after having my entire passenger side ripped apart to repack the disconnect and replace the hub I found this last night.
Looks like Ill be tearing apart the diff side tonight. My truck is like the Dolly Parton of cars, needs constant surgery to stay on the road.
Less than 2 weeks after having my entire passenger side ripped apart to repack the disconnect and replace the hub I found this last night.
Looks like Ill be tearing apart the diff side tonight. My truck is like the Dolly Parton of cars, needs constant surgery to stay on the road.
- bdp1978
- Trail-Blazer
- Posts: 253
- Joined: Fri Oct 22, 2010 12:32 pm
- Location: Rochester Hills, Mi
- Name: Brad
- Vehicle Year: 2004
- Vehicle: Chevrolet TrailBlazer
- DriveTrain: 4WD w/ G80
fishsticks wrote:Got a code this morning... Off to the parts store.
No scan tool in stock? Oh, the embarrassment....
-
The Roadie - Founder
- Posts: 5011
- Joined: Mon Sep 07, 2009 11:29 pm
- Location: OR, Portland area
- Name: Bill Carton
- Vehicle Year: 2004
- Vehicle: GMC Envoy
- DriveTrain: 4WD w/ G80
- Rank: Expedition Guide
Hope it stays that way for you. My experience says it'll be back in a week. Good luck.fishsticks wrote:P0302 - Cylinder 2 Misfire
Problem solved, idles smooth like butta.
- bgwolfpack
- Veteran
- Posts: 1794
- Joined: Fri Sep 18, 2009 7:19 pm
- Name: Randy
- Vehicle Year: Other
- Vehicle: Other Vehicle
- DriveTrain: 4WD
Hehe, yep!
If not next week, the week after, when you least expect it.
If not next week, the week after, when you least expect it.
-
Trail X - Founder
- Posts: 9925
- Joined: Mon Sep 07, 2009 10:22 pm
- Location: VA, Roanoke
- Name: James Downing
- Vehicle Year: 2005
- Vehicle: Chevrolet TrailBlazer
- DriveTrain: 4WD w/ Aftermarket Locker
- Rank: Expedition Guide