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Unread 08-27-2014, 07:05 PM
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story goes(it was in Hot Rod)some guy was talking to the Cadillac engineers about the starter in the NorthStar engine and how stupid it was to mount it in the the engine valley. The Cadillac guys stated that the starter in the Northstars had the lowest failure rate of any of the GM engines and they had engineered it to be almost infallible. The guy asked them why the did put that starter on all the other engines if it was that good, the engineers didn't know how to answer
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Unread 08-27-2014, 08:03 PM
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redfish, i have an 02 tahoe w 5.3, same thing happened. went through a deep puddle and 1 week later, got the same code. had to replace the sensors and wire harness. and manifold and vc gaskets. i went with the gm sensors, aftermarkets were bout 50 bucks cheaper, but hassle of getting to them, i went with oem.
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Unread 08-28-2014, 10:53 AM
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Yea this doesnt sound like any Saturday I wanna be a part of....I just reset the codes so I'll see if it comes up again(fingers crossed)

Phat - Lots of guys that had the same issue replaced both the sensors. More than half said after replacing one the other went out. Basically from what Ive seen its two sensors at $60 each and 3hrs of shop time.

Lets hope it was just a dirty sensor and its had time to dry out....I keep ya posted.
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Unread 08-28-2014, 11:26 AM
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i'd definately replace both. if i remember, the gmc's were about $150-$175
it's like anytime i have to put in a heater core or an evaporator , i change em both.
same with a washer & dryer.

good luck
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Unread 08-29-2014, 07:08 AM
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Well so far it hasnt popped back up again.....Im not the type to ignore a problem but if its gonna behave itself, all the better for me! Like I said, no difference in performance when it came on so.....
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- The charm of fishing is that it is the pursuit of what is elusive but obtainable, a perpetual series of occasions for hope.

Lucky Jack - .......The Surprise is not old; no one would call her old. She has a bluff bow, lovely lines. She's a fine seaboat: weatherly, stiff and fast, very fast, if she's well handled. No, she's not old; she's in her prime.

85' Wellcraft 20 Fisherman "Guale Girl"
1979 Alumnacraft 14 - STILL got holes in it
2006 WS Tarpon160f - "Mudd Butt"
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Unread 08-29-2014, 08:53 AM
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If the knock sensors go out, performance won't suffer much, but I believe the ECM defaults back to the low octane spark tables for safety. So it's not a huge reduction in performance, but it is some. Also I believe even with the light on, it will only default to the lower timing tables if it is an active code. The light will remain on for 2 or 3 starts after the fault isn't present.
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Unread 08-29-2014, 01:33 PM
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Quote:
Originally Posted by THEFERMANATOR View Post
If the knock sensors go out, performance won't suffer much, but I believe the ECM defaults back to the low octane spark tables for safety. So it's not a huge reduction in performance, but it is some. Also I believe even with the light on, it will only default to the lower timing tables if it is an active code. The light will remain on for 2 or 3 starts after the fault isn't present.
Yea Ferm it even did it after I cleared the code. I turned the truck off and re-started and erased again and no codes......Ive been about 20mi so far so good.....
__________________
- The charm of fishing is that it is the pursuit of what is elusive but obtainable, a perpetual series of occasions for hope.

Lucky Jack - .......The Surprise is not old; no one would call her old. She has a bluff bow, lovely lines. She's a fine seaboat: weatherly, stiff and fast, very fast, if she's well handled. No, she's not old; she's in her prime.

85' Wellcraft 20 Fisherman "Guale Girl"
1979 Alumnacraft 14 - STILL got holes in it
2006 WS Tarpon160f - "Mudd Butt"
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