MERGED-(Fresh opti pull pics) & (Ignition stutter-Code crackers needed)
Safety Car
Joined: Oct 2007
Posts: 3,816
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From: :45 minutes from everywhere / E-I-E-I-O
Yep.
I'm hopin' I haven't cooked my PCM.
I got some plastic burn smell again. Happens occasionally when I roll; started after the gasket swap back in May. First I thought it was some degreaser that I pumped onto the back of the block, cause I didn't unclip any harnesses to fall on hat parts.
Then the SES lit up on Father's day. 3 history codes. I was pretty sure then I had fouled harness connectors from pumpin' so much Gunk degreaser, or I just had a cookin' harness.
Then some more history codes. ALL history. And the ICC circuit checked good, except for the PCM - couldn't test it. Even went beyond the PCM, but that was a waste of time.
Then the PCM people said mine was so messed up they wouldn't guarantee a repair. The new one was good for 4 trips, and I COULDN'T EVEN TELL IT WAS MISSING. I smelled the rich burn rotten egg smell, pulled up mileage, and it had tanked. Got home, plugged in, and got codes.
Time to pull the harness and inspect.
Damn.
I'm hopin' I haven't cooked my PCM.
I got some plastic burn smell again. Happens occasionally when I roll; started after the gasket swap back in May. First I thought it was some degreaser that I pumped onto the back of the block, cause I didn't unclip any harnesses to fall on hat parts.
Then the SES lit up on Father's day. 3 history codes. I was pretty sure then I had fouled harness connectors from pumpin' so much Gunk degreaser, or I just had a cookin' harness.
Then some more history codes. ALL history. And the ICC circuit checked good, except for the PCM - couldn't test it. Even went beyond the PCM, but that was a waste of time.
Then the PCM people said mine was so messed up they wouldn't guarantee a repair. The new one was good for 4 trips, and I COULDN'T EVEN TELL IT WAS MISSING. I smelled the rich burn rotten egg smell, pulled up mileage, and it had tanked. Got home, plugged in, and got codes.
Time to pull the harness and inspect.
Damn.
Last edited by schrade; Aug 7, 2008 at 11:20 PM.
Safety Car
Joined: Oct 2007
Posts: 3,816
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From: :45 minutes from everywhere / E-I-E-I-O
This is really gonna' be ugly - gettin' the harness out to inspect.
Any tips? It will have to include the harness for VSS H72, right 02 sensor H64. ICC harness branches off ABOVE THE DIRTY PART OF THE HARNESS. THAT PART IS JUST BAFFLING ME, UNLESS ANOTHER GROUND FOR THE ICC GOES DOWN TO THE OTHER HARNESS. I did NOT see one in the FSM schematic.
Any tips? It will have to include the harness for VSS H72, right 02 sensor H64. ICC harness branches off ABOVE THE DIRTY PART OF THE HARNESS. THAT PART IS JUST BAFFLING ME, UNLESS ANOTHER GROUND FOR THE ICC GOES DOWN TO THE OTHER HARNESS. I did NOT see one in the FSM schematic.
Safety Car
Joined: Oct 2007
Posts: 3,816
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From: :45 minutes from everywhere / E-I-E-I-O
Back to the search - lookin' for a hot spot in the harness, that trips up history codes when it gets hot.
And it is gettin' uglier by the minute, with no clue clues in sight.
Has anybody done a wirin' harness with the motor in the car? If you had to pull the motor, I don't wanna' know about it.
Anybody know how the connector at the arrow comes off? Is it multiple blade connectors? Snap clips anywhere on it? I can see nothing...
And it is gettin' uglier by the minute, with no clue clues in sight.
Has anybody done a wirin' harness with the motor in the car? If you had to pull the motor, I don't wanna' know about it.
Anybody know how the connector at the arrow comes off? Is it multiple blade connectors? Snap clips anywhere on it? I can see nothing...
Last edited by schrade; Aug 8, 2008 at 06:59 PM.
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
All togther now.....
This is the song that never ends,
As it goes on and on my friend.
Some people started singing it, not knowing what it was,
And they'll continue singing it forever just because ->
The next line is the first line repeated, and the song repeats ad infinitum.
Sorry couldn't help myself
I thought I would try and add some humor.
Seriously good luck you might wanna give "Mikey the Torch" a call to give you a hand
This is the song that never ends,
As it goes on and on my friend.
Some people started singing it, not knowing what it was,
And they'll continue singing it forever just because ->
The next line is the first line repeated, and the song repeats ad infinitum.
Sorry couldn't help myself
I thought I would try and add some humor.Seriously good luck you might wanna give "Mikey the Torch" a call to give you a hand
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Safety Car
Joined: Oct 2007
Posts: 3,816
Likes: 0
From: :45 minutes from everywhere / E-I-E-I-O
1 / 12th of a turn, flip the wrench, another one twelfth of a turn, lather, rinse, repeat.
This is a body-on-frame restoration.
This is pulling the battery tray. We're still pulling the harness to find a cooked or chafed area that is tripping H41 ICC, H64 O2 fault, and H72 VSS fault.
This is a body-on-frame restoration.
This is pulling the battery tray. We're still pulling the harness to find a cooked or chafed area that is tripping H41 ICC, H64 O2 fault, and H72 VSS fault.
Safety Car
Joined: Oct 2007
Posts: 3,816
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From: :45 minutes from everywhere / E-I-E-I-O
I have an oil leak on the passenger side. I cannot tell where it is, it is not making it to the ground. The intake is freshly sealed May, so I know it ain't there.
It can't come from the head. Right? It is running perfectly, till the ICC circuit fault trips up. Even as it trips, I can hardly tell it is in fault mode.
The oil leak cannot be fouling the ICC circuit. I think it could be causing the heated O2 fault, and maybe the VSS fault. IS THIS POSSIBLE???
I'm pulling the right cat pipe, starter, and ex manifold, to access the harness and find the leak. Any tips???
Is the VSS harness on the right side of the tranny?
It can't come from the head. Right? It is running perfectly, till the ICC circuit fault trips up. Even as it trips, I can hardly tell it is in fault mode.
The oil leak cannot be fouling the ICC circuit. I think it could be causing the heated O2 fault, and maybe the VSS fault. IS THIS POSSIBLE???
I'm pulling the right cat pipe, starter, and ex manifold, to access the harness and find the leak. Any tips???
Is the VSS harness on the right side of the tranny?
Melting Slicks
Joined: Jan 2008
Posts: 2,065
Likes: 1
From: Jasper Texas
Man, stop diggin' around in there, your only making things worse for yourself!
I assume that you've checked the valve covers, but does anything screw into the block on that side. Where do you first start seeing evidence of a leak?
I assume that you've checked the valve covers, but does anything screw into the block on that side. Where do you first start seeing evidence of a leak?
Safety Car
Joined: Oct 2007
Posts: 3,816
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From: :45 minutes from everywhere / E-I-E-I-O
Yeah - what's up there Clay...
I really need that FSM back from Chevy...
I got oil cookin' some sensors/connectors, OR connectors cookin on some other hot stuff. That's the smell I've noticed, and seen a hint of smoke with good light at night. That was what I suggested to you long ago, in a galaxy far away, when you said you got smoke whiffs...
Neither of those tho' could be lightin' up the ICC fault, unless a ground is shared with the lower harnesses (ICC harness is totally up top).
So the ICC fault is on hold while I examine the leak / other 2 H codes. If there's no common ground with the lower harnesses O2, VSS, it's either opti (although it is NOT in the ICC 41, 42 FSM diagnostic flow chart (it IS in the schematic tho')).
???
I really need that FSM back from Chevy...
I got oil cookin' some sensors/connectors, OR connectors cookin on some other hot stuff. That's the smell I've noticed, and seen a hint of smoke with good light at night. That was what I suggested to you long ago, in a galaxy far away, when you said you got smoke whiffs...
Neither of those tho' could be lightin' up the ICC fault, unless a ground is shared with the lower harnesses (ICC harness is totally up top).
So the ICC fault is on hold while I examine the leak / other 2 H codes. If there's no common ground with the lower harnesses O2, VSS, it's either opti (although it is NOT in the ICC 41, 42 FSM diagnostic flow chart (it IS in the schematic tho')).
???
Thread Starter
Instructor
Joined: Jun 2004
Posts: 174
Likes: 0
From: OH/FL
Two thoughts...
1) ICC could be the wiring harness? I remember seeing threads about the Opti harness going bad...I know you've spent a good amount so far, but for $35 it might be worth the investment.
http://cgi.ebay.com/ebaymotors/95-97...spagenameZWDVW
2) Looking at AutoBlog, and their "track ****" BMW 318i (see attachment near the bottom of "Day 1"), I'm thinking there could be a sensor that's really bad and jumping the electrical system...
http://www.autoblog.com/2008/08/08/t...illow-day-one/
1) ICC could be the wiring harness? I remember seeing threads about the Opti harness going bad...I know you've spent a good amount so far, but for $35 it might be worth the investment.
http://cgi.ebay.com/ebaymotors/95-97...spagenameZWDVW
2) Looking at AutoBlog, and their "track ****" BMW 318i (see attachment near the bottom of "Day 1"), I'm thinking there could be a sensor that's really bad and jumping the electrical system...
http://www.autoblog.com/2008/08/08/t...illow-day-one/
Thread Starter
Instructor
Joined: Jun 2004
Posts: 174
Likes: 0
From: OH/FL
I also go back to the Opti...could it be operating fine, but through either the vent line from the intake manifold, or from seepage, get oil/dirt/water/debris in it that boils at around 210 and causes ignition problems?
I myself am half tempted to rip out the stock Opti, CLEAN THE SH17 OUT of it, and bolt it back on to see what's up. Huge job, I know...but so far you haven't been able to "buy" your way out of this problem...
I'm seriously hooked on this one!
Thread Starter
Instructor
Joined: Jun 2004
Posts: 174
Likes: 0
From: OH/FL
Safety Car
Joined: Oct 2007
Posts: 3,816
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From: :45 minutes from everywhere / E-I-E-I-O
I told blankman to put his multimeter on circuit 239/210, to monitor current on that circuit for fluctuations.
When I did that bypass test, I checked static voltage. I think you also should try that test there Clay...
When I did that bypass test, I checked static voltage. I think you also should try that test there Clay...
Safety Car
Joined: Oct 2007
Posts: 3,816
Likes: 0
From: :45 minutes from everywhere / E-I-E-I-O
I told blankman to put his multimeter on circuit 239/210, to monitor current on that circuit for fluctuations.
When I did that bypass test, I checked static voltage. I think you also should try that test there Clay...
When I did that bypass test, I checked static voltage. I think you also should try that test there Clay...