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11-25-2012, 03:29 PM
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#26
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Join Date: Jan 2007
Location: Southeast, PA / Brick, NJ (Lost due to Sandy)
Posts: 238
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Quote:
Originally Posted by V
the AIR system should be turned off in the PCM if it has been removed, I'm not sure if a fuse will properly disconnect it
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Hose 18 seems to be the one that is under there and runs to nowhere. However, I checked and everything else for the AIR is there.
Crappy photos again (I don't have a lift, ramps, etc. at the moment):
Quote:
Originally Posted by sweetbmxrider
Can you get a noid light to make sure the injector is being pulsed and you don't have a broken wire or something?
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Never used a noid light. When my mechanic buddy listed to the injectors he said the #5 injector sounded different, but was making noise. I'm just going to pick up a used injector first to see if that does anything. If that's the case, great! If not, I'll get the noid kit.
__________________
-Rick (Photographer)
- 2001 Trans AM WS6 - M6, ORY, Borla catback, etc.
- 1998 Trans Am - M6, functional Ram Air hood, Flowmaster, 3" QTP E-cutout, ORY, K&N FIPK, 3.42's, LSD, Hella 60mm Projectors, 4300K HID's & more.
- 2003 VW Golf TDI - Turbo diesel @ 50 MPG highway
- 1998 Jeep Grand Cherokee 5.9L(ZJ) - 4.75" lift, 32" MTZ's, armor, etc.
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11-25-2012, 04:44 PM
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#27
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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Its just a little light that fits into the injector connector. The light blinks as power/ground is sent through it. If you are hearing noise though, I would assume it is alright but you know what they say. Also, I thought you said you swapped the injector around and the problem stayed, not followed the injector, which makes me think its not the entire issue. I have been wrong before!
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11-25-2012, 04:58 PM
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#28
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Join Date: Jan 2007
Location: Southeast, PA / Brick, NJ (Lost due to Sandy)
Posts: 238
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Quote:
Originally Posted by sweetbmxrider
Its just a little light that fits into the injector connector. The light blinks as power/ground is sent through it. If you are hearing noise though, I would assume it is alright but you know what they say. Also, I thought you said you swapped the injector around and the problem stayed, not followed the injector, which makes me think its not the entire issue. I have been wrong before!
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Gotcha! We didn't swap the OE injectors around, we just used a Ford Injector we had laying around. Probably should've swapped the one injector to another cylinder, but it was freezing and we ran out of light. My buddy has a bunch of injectors from his f-body's laying around. I'm going to grab one and see if that does anything.
__________________
-Rick (Photographer)
- 2001 Trans AM WS6 - M6, ORY, Borla catback, etc.
- 1998 Trans Am - M6, functional Ram Air hood, Flowmaster, 3" QTP E-cutout, ORY, K&N FIPK, 3.42's, LSD, Hella 60mm Projectors, 4300K HID's & more.
- 2003 VW Golf TDI - Turbo diesel @ 50 MPG highway
- 1998 Jeep Grand Cherokee 5.9L(ZJ) - 4.75" lift, 32" MTZ's, armor, etc.
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11-25-2012, 05:58 PM
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#29
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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Oh ok, I thought you swapped it around and then swapped in the ford one. Must have been the coils I was thinking about.
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11-25-2012, 07:07 PM
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#30
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Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,213
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Quote:
Originally Posted by GhostDakota
It's funny you mention a vacuum leak. Check this out:
I was fixing my driver side headlight motor gear and noticed these tubes just chilling (Pardon the cell phone shot):
One smaller tube attaches to the large tube and goes back towards the wheel well and is attached. Another smaller tube is also attached to the large tube (on the side) which you can see and goes to nothing at the moment.
I taped up the end so it's not open to air at the moment.
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That might just be part of the stock air intake resonator which looks like it was cut off. I can't remember for sure but I think the LS1 cars use the stock air filter box to filter air for the AIR setup. You might need to leave that open so the the AIR pump has an air source if that's what it is. Check your vacuum lines and double check the AIR check valves to make sure the air can only go one way.
It looks like #21 in your photo and that looks like it's just a vent hose.
__________________
69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
Last edited by JL8Jeff; 11-25-2012 at 07:14 PM.
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11-26-2012, 09:44 PM
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#31
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Join Date: Jan 2007
Location: Southeast, PA / Brick, NJ (Lost due to Sandy)
Posts: 238
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No noid testing yet. Found more out today though...
#5 AND #7 injectors, when unplugged, have no bearing on how the car runs. 1, 2, 3, 4, 6, 8 all drop the idle immediately when unplugged, and it goes back up once plugged back in.
Replaced #5 injector with a confirmed working injector out of my buddies g/f's '98 Camaro SS that was wrecked. Same injector part #. Car ran great for about 1-2 minutes after startup, then went right back to ****.
My LS buddies (Two brothers who currently and have owned way too many f-body vehicles over the years) took a look at it. They mentioned wiring harness issues, but were perplexed. Said with the way it runs great sometimes at startup, but then other times doesn't, is very odd... Damn this car lol.
__________________
-Rick (Photographer)
- 2001 Trans AM WS6 - M6, ORY, Borla catback, etc.
- 1998 Trans Am - M6, functional Ram Air hood, Flowmaster, 3" QTP E-cutout, ORY, K&N FIPK, 3.42's, LSD, Hella 60mm Projectors, 4300K HID's & more.
- 2003 VW Golf TDI - Turbo diesel @ 50 MPG highway
- 1998 Jeep Grand Cherokee 5.9L(ZJ) - 4.75" lift, 32" MTZ's, armor, etc.
Last edited by GhostDakota; 11-29-2012 at 11:25 AM.
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11-26-2012, 10:13 PM
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#32
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Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,213
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There might be an injector wire harness TSB on these cars so search around for that. Also look for a possible loose ground somewhere on the engine.
__________________
69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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11-27-2012, 04:00 AM
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#33
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Join Date: Sep 2008
Location: Hackettstown, NJ
Posts: 1,643
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PCM shot, maybe?
__________________
1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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11-27-2012, 10:03 AM
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#34
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Join Date: Jan 2007
Location: Southeast, PA / Brick, NJ (Lost due to Sandy)
Posts: 238
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Jeff, I'll check for the grounds next chance I get. I had to drive my TA in the snow today, driving like ****, 'cause I sold my Jeep and won't get my new one 'til Friday. FML. Is there a site to look up TSB's or would I need to call a dealer?
Bishop, I've been reading about people who think they have a bad PCM. It seems like I have some symptoms, but not all.
Odd thing I noticed yesterday is that my 3rd brake light is illuminated when I have my lights on, just like my rear running lights. It gets brighter when I hit my brake likes as would a rear running light. Also having the alarm issue where it goes off by itself after a car wash or in the rain - for no reason. My low coolant light is on but too, but haven't had time to check the level. Some other intermittent electrical things as well.
EDIT: My '01 PCM wouldn't work in my '98 right?
__________________
-Rick (Photographer)
- 2001 Trans AM WS6 - M6, ORY, Borla catback, etc.
- 1998 Trans Am - M6, functional Ram Air hood, Flowmaster, 3" QTP E-cutout, ORY, K&N FIPK, 3.42's, LSD, Hella 60mm Projectors, 4300K HID's & more.
- 2003 VW Golf TDI - Turbo diesel @ 50 MPG highway
- 1998 Jeep Grand Cherokee 5.9L(ZJ) - 4.75" lift, 32" MTZ's, armor, etc.
Last edited by GhostDakota; 11-27-2012 at 10:11 AM.
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11-27-2012, 04:00 PM
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#35
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Stalker
Join Date: Aug 2004
Posts: 12,077
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Quote:
Originally Posted by GhostDakota
EDIT: My '01 PCM wouldn't work in my '98 right?
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nope
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11-27-2012, 04:05 PM
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#36
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Join Date: Jan 2007
Location: Southeast, PA / Brick, NJ (Lost due to Sandy)
Posts: 238
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Figured. Out of curiosity... I took the descreened MAF off my '01 and it's now on my '98. Would that be causing issues or are they the same 98-02?
__________________
-Rick (Photographer)
- 2001 Trans AM WS6 - M6, ORY, Borla catback, etc.
- 1998 Trans Am - M6, functional Ram Air hood, Flowmaster, 3" QTP E-cutout, ORY, K&N FIPK, 3.42's, LSD, Hella 60mm Projectors, 4300K HID's & more.
- 2003 VW Golf TDI - Turbo diesel @ 50 MPG highway
- 1998 Jeep Grand Cherokee 5.9L(ZJ) - 4.75" lift, 32" MTZ's, armor, etc.
Last edited by GhostDakota; 11-27-2012 at 04:05 PM.
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11-27-2012, 04:15 PM
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#37
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by GhostDakota
Figured. Out of curiosity... I took the descreened MAF off my '01 and it's now on my '98. Would that be causing issues or are they the same 98-02?
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A descreened MAF can cause a world of hurt. Speaking from firsthand experience. Try that and post up.
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11-27-2012, 04:19 PM
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#38
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Join Date: Jan 2007
Location: Southeast, PA / Brick, NJ (Lost due to Sandy)
Posts: 238
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Quote:
Originally Posted by WildBillyT
A descreened MAF can cause a world of hurt. Speaking from firsthand experience. Try that and post up.
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Okay, great. Will do that when I have free time, maybe tomorrow during lunch, and report back.
__________________
-Rick (Photographer)
- 2001 Trans AM WS6 - M6, ORY, Borla catback, etc.
- 1998 Trans Am - M6, functional Ram Air hood, Flowmaster, 3" QTP E-cutout, ORY, K&N FIPK, 3.42's, LSD, Hella 60mm Projectors, 4300K HID's & more.
- 2003 VW Golf TDI - Turbo diesel @ 50 MPG highway
- 1998 Jeep Grand Cherokee 5.9L(ZJ) - 4.75" lift, 32" MTZ's, armor, etc.
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11-27-2012, 07:11 PM
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#39
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Join Date: Sep 2008
Location: Hackettstown, NJ
Posts: 1,643
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Speaking from tuning experience, don't descreen MAF sensors. Does far more harm than good.
__________________
1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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11-27-2012, 09:42 PM
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#40
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Join Date: Jan 2007
Location: Southeast, PA / Brick, NJ (Lost due to Sandy)
Posts: 238
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Quote:
Originally Posted by The_Bishop
Speaking from tuning experience, don't descreen MAF sensors. Does far more harm than good.
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I didn't - the ex did it lol. Then I bought her car as my project.
__________________
-Rick (Photographer)
- 2001 Trans AM WS6 - M6, ORY, Borla catback, etc.
- 1998 Trans Am - M6, functional Ram Air hood, Flowmaster, 3" QTP E-cutout, ORY, K&N FIPK, 3.42's, LSD, Hella 60mm Projectors, 4300K HID's & more.
- 2003 VW Golf TDI - Turbo diesel @ 50 MPG highway
- 1998 Jeep Grand Cherokee 5.9L(ZJ) - 4.75" lift, 32" MTZ's, armor, etc.
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11-28-2012, 08:11 AM
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#41
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Join Date: Jan 2007
Location: Southeast, PA / Brick, NJ (Lost due to Sandy)
Posts: 238
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Odd thing - I disconnected the MAF last night, just for S&G's, then started it up. It ran like pure crap (worse than before). I plugged it back in and drove home. On the highway, in 5th gear, the car seemed to be running on 7, possibly even 7.5 cylinders lol, versus the 6 it was normally running on. Even on the back roads off the highway just before my house it ran better. The SES light wasn't even flashing as it used to do!
Then, this morning I started it up and it's back to 6 cylinders. SES flashes at speeds mainly above 35, as it did before.
I will be swapping MAF's back to my stock one today.
__________________
-Rick (Photographer)
- 2001 Trans AM WS6 - M6, ORY, Borla catback, etc.
- 1998 Trans Am - M6, functional Ram Air hood, Flowmaster, 3" QTP E-cutout, ORY, K&N FIPK, 3.42's, LSD, Hella 60mm Projectors, 4300K HID's & more.
- 2003 VW Golf TDI - Turbo diesel @ 50 MPG highway
- 1998 Jeep Grand Cherokee 5.9L(ZJ) - 4.75" lift, 32" MTZ's, armor, etc.
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11-28-2012, 08:42 PM
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#42
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Join Date: Jul 2004
Location: West Long Branch
Posts: 13,598
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Check Engine light is still on? If so, what are the codes?
__________________
2/20/2013: They Day the ****s Stopped
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11-29-2012, 09:14 AM
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#43
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Join Date: Jan 2007
Location: Southeast, PA / Brick, NJ (Lost due to Sandy)
Posts: 238
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I reset the ECU by turning the key on, removing the two ECU fuses, turning the key off after 10 minutes, then replacing the fuses. SES light turned off. Car started up great. Drove for approx. 1 minute, then it went back to driving like ****.
SES light came on again after approx. 3 minutes, then blinking shortly after.
Codes listed on post #1:
P0420 - Original code I've had for over a year (Catalyst efficiency below threshold ...)
P0300 - Random misfire detected
P0140 - o2 circuit blah blah (from when I disconnected the driver side downstream o2 sensor)
Have not re-checked to see if there are any new codes.
__________________
-Rick (Photographer)
- 2001 Trans AM WS6 - M6, ORY, Borla catback, etc.
- 1998 Trans Am - M6, functional Ram Air hood, Flowmaster, 3" QTP E-cutout, ORY, K&N FIPK, 3.42's, LSD, Hella 60mm Projectors, 4300K HID's & more.
- 2003 VW Golf TDI - Turbo diesel @ 50 MPG highway
- 1998 Jeep Grand Cherokee 5.9L(ZJ) - 4.75" lift, 32" MTZ's, armor, etc.
Last edited by GhostDakota; 11-29-2012 at 11:22 AM.
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11-30-2012, 05:06 AM
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#44
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Join Date: Aug 2007
Location: Piscataway, N.J.
Posts: 1,729
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ANY thoughts about just taking this to a Chevrolet Dealer/ or a High Performance shop with a good reputation? It seems like you'll make yourself crazy before you find the problem.
__________________
1991 FORMULA 350-GONE BUT NOT FORGOTTEN
1 of 1,197 with L98 Option/13.79@100 mph
1994 25th ANNIVERSARY TRANS AM GT -1 of ONLY 2,000 made/ Only 128 made with a HURST 6-Speed Manual and 91 with T-Tops and Compact Disc/ K & N Filtercharger/Magnaflow Performance Muffler/Air Foil- ORIGINAL MINT Arctic White Ultra Rare SURVIVOR. DAYTONA 500 PACE CAR Decal Kit!
SOLD: 1989 Turbo T/A in 1991 it ran 12:18@115 mph
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11-30-2012, 07:30 AM
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#45
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Join Date: Apr 2012
Location: nutley
Posts: 410
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Maybe that cat is shot and making back pressure and the engine and messing with your o2
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11-30-2012, 07:49 AM
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#46
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Join Date: Jan 2007
Location: Southeast, PA / Brick, NJ (Lost due to Sandy)
Posts: 238
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I think my next steps are:
-Driver side upstream o2
-Driver side cat
If it still sucks, I may consider taking it to Josh at JS Speed in Hulmeville, PA or to Andrew at CSP in West Chester, PA.
__________________
-Rick (Photographer)
- 2001 Trans AM WS6 - M6, ORY, Borla catback, etc.
- 1998 Trans Am - M6, functional Ram Air hood, Flowmaster, 3" QTP E-cutout, ORY, K&N FIPK, 3.42's, LSD, Hella 60mm Projectors, 4300K HID's & more.
- 2003 VW Golf TDI - Turbo diesel @ 50 MPG highway
- 1998 Jeep Grand Cherokee 5.9L(ZJ) - 4.75" lift, 32" MTZ's, armor, etc.
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11-30-2012, 08:04 AM
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#47
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,152
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you should make a complete list of all the issues & alterations
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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11-30-2012, 08:21 AM
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#48
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Join Date: Jul 2004
Location: West Long Branch
Posts: 13,598
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P0420 is not an O2 sensor code. Lots of people think it is, but it has to be the MOST common code I see. Usually it's related to an exhaust leak, and judging by all that missing AIR stuff, I would venture a guess as to that being the problem?
P0140 code is more specific, but could still be the whole missing AIR stuff.
As for misfire, what else have you checked? Wires? Coils?
__________________
2/20/2013: They Day the ****s Stopped
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11-30-2012, 08:25 AM
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#49
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by BigAls87Z28
P0420 is not an O2 sensor code. Lots of people think it is, but it has to be the MOST common code I see. Usually it's related to an exhaust leak, and judging by all that missing AIR stuff, I would venture a guess as to that being the problem?
P0140 code is more specific, but could still be the whole missing AIR stuff.
As for misfire, what else have you checked? Wires? Coils?
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Al, I was thinking about this in one of the earlier pics. Looks like the AIR tube is open to atmospheric (not capped). I am unsure if you can run them like this.
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11-30-2012, 09:13 AM
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#50
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Join Date: Jul 2004
Location: West Long Branch
Posts: 13,598
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Okay, went back and reread some of the stuff. You pulled the AIR stuff apart to get the plugs, so that makes sense as to why your are missing it in that picture. I hope that when you put it all back together that you used some sort of hi-temp gasket material so that you don't have leaks that could cause other problems on top of the problems you already have.
So you replaced the plugs and then all these problems came up, or did you have a problem then replace the plugs?
Have you checked the coil?
If he's misfiring like an "AK47", that will cause the O2 codes to trip. O2's are probably covered in a lot of fuel, and they looooove that.
Check the coils, might have a problem there. Swap some of them around, see if that changes the rate or the pitch of the misfires. You might be looking at one, or more, new coils.
__________________
2/20/2013: They Day the ****s Stopped
Last edited by BigAls87Z28; 11-30-2012 at 09:15 AM.
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