Is this normal?
Thread Starter
On The Tree
Joined: Feb 2014
Posts: 157
Likes: 3
Is this normal? I have a 0411 PCM in a 5.3 swap into a 68 C10. The swap is two years old, but recently started throwing p0327 and p0332 codes. Found front sensor not reporting noise so I decided to change both sensors and harness. About a week later codes came back. Decided the complete wire harness back to PCM should be checked. When I removed the blue connecter from PCM, there is a sticky "gel" on the blue plastic and down inside PCM pins area. This stuff was sticky like grape jelly and looked like Vaseline.
Is this normal? I have never seen this on any PCM connection area. I removed red connecter and no "gel" was found.
The wire harness checked fine sensors good so the last part is the PCM itself but is this gel a cause or symptom or nothing to worry about?
I have a feeling the PCM is bad anyways.
Is this normal? I have never seen this on any PCM connection area. I removed red connecter and no "gel" was found.
The wire harness checked fine sensors good so the last part is the PCM itself but is this gel a cause or symptom or nothing to worry about?
I have a feeling the PCM is bad anyways.
I have a 0411 PCM in a 5.3 swap into a 68 C10. The swap is two years old, but recently started throwing p0327 and p0332 codes. Found front sensor not reporting noise so I decided to change both sensors and harness. About a week later codes came back. Decided the complete wire harness back to PCM should be checked. When I removed the blue connecter from PCM, there is a sticky "gel" on the blue plastic and down inside PCM pins area. This stuff was sticky like grape jelly and looked like Vaseline.
Is this normal? I have never seen this on any PCM connection area. I removed red connecter and no "gel" was found.
The wire harness checked fine sensors good so the last part is the PCM itself but is this gel a cause or symptom or nothing to worry about?
I have a feeling the PCM is bad anyways.
Is this normal? I have never seen this on any PCM connection area. I removed red connecter and no "gel" was found.
The wire harness checked fine sensors good so the last part is the PCM itself but is this gel a cause or symptom or nothing to worry about?
I have a feeling the PCM is bad anyways.
Thread Starter
On The Tree
Joined: Feb 2014
Posts: 157
Likes: 3
Ok when you say turn codes off, NO MIL reported or No report at all?
I have read on this site that if these codes are reporting the PCM automatically retards timing up to 4 to 8-9 degrees?
So are you saying turning the report off completely that no retard happens unless it gets actual knock?
Thanks in advance for the responses
I have read on this site that if these codes are reporting the PCM automatically retards timing up to 4 to 8-9 degrees?
So are you saying turning the report off completely that no retard happens unless it gets actual knock?
Thanks in advance for the responses
Staging Lane
Joined: Jan 2017
Posts: 63
Likes: 2
From: CT
Would it be better to change the sensitivity instead or choose DETECTION MODE to "ENGINE" instead of "CYLINDER" through HP Tuners for him?
So your stating (curious) disabling Knock code if it's False won't harm his engine if he so happens to get bad gas or something? Sorry for the stupid question trying to understand more about KNOCK settings on LS1's and software options.
So your stating (curious) disabling Knock code if it's False won't harm his engine if he so happens to get bad gas or something? Sorry for the stupid question trying to understand more about KNOCK settings on LS1's and software options.
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Knock sensors still work. You are just turning off the diagnostics on them. Not their functioning. Especially if you have already replaced them and the harness. The codes have been off (No Error Reported) on my 04 Silverado for a couple of years. They still pick up knock just fine. Data logs show it. The problem seems to be more of an issue on 99-07 Gen 3 trucks/SUVs for some reason.
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Verdad Gallardo Staging Lane
Joined: Jan 2017
Posts: 63
Likes: 2
From: CT
Knock sensors still work. You are just turning off the diagnostics on them. Not their functioning. Especially if you have already replaced them and the harness. The codes have been off (No Error Reported) on my 04 Silverado for a couple of years. They still pick up knock just fine. Data logs show it. The problem seems to be more of an issue on 99-07 Gen 3 trucks/SUVs for some reason.
That's my last question and sorry if I hijacked this thread.
With KS codes set the PCM will preemptively pull the max timing that is in the KR in Power Enrichment table when you enter PE. The detection of knock is not what causes KS codes to set.
Staging Lane
Joined: Jan 2017
Posts: 63
Likes: 2
From: CT
Thanks, explains the pig rich condition just by the smell and the black soot left behind on the exhaust and SLP rear body skirt for the last 60,000 miles.
