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Following up on this. Fans work fine now after adjusting the output control table. Just to be prudent, I changed back to the tune with the original system sector as well, and the fans also work. So...

Got it, I will give this a go. I looked at that table several times and couldn't make heads or tails of it. I will have to try it tomorrow after work.

I understand, that type of information is...

Results are in:

I just tried Verlon's adjustment (thank you again), and the speed now shows 0, awesome. So I let it warm up to 212 or so, but no fan activated (tune is set for 203). I can confirm...

Sweet! Thanks, I will as soon as the snow gets outta here. I will post up what happens. Thanks

I was initially going to do that, but then I would have pedal and throttle body problems, no VVT, more credits, etc. Seems like alot to avoid a small problem.

Temp switch is cheap enough and would...

Thanks for the quick responses. I'll try not to make this too long, while not leaving anything out.

Just for the record the rundown of the car is:
1972 GTO, 3 speed (factory), 6.0 LY6, E38 Ecm...

My project is an LY6 with a straight drive into a 72 GTO, so no TCM. This isn't really a problem so far, but I would like to control the electric fans by the ECM. Unfortunately the 158mph default is...

A set of colder plugs is coming soon. I see on the other forums that it helps.
Jon

I have been hoping it is false knock, but I suspect a good portion is real (on this car anyway). Reducing timing across the board by 6* makes the KR go away completely, but not surprisingly makes the...

OK, only one timing table to mess with then. I thought something was really wrong with her car seeing near constant knock retard at highway speeds. I see lots of posts saying this is normal(!). No...

My wife drives a 2005 Grand Prix GXP with the LS4. I was scanning it the other day while diagnosing a failed oil pressure sensor, and noticed a lot of knock retard while in V4 mode and during...