sensor settings on new LT1????
Thread Starter
Racer
Joined: Oct 2003
Posts: 429
Likes: 0
From: Plains Ga.
sensor settings on new LT1????
Well gents, my LT1 project engine and trans. swap appears to be running pretty good. I've put about 50 miles on her so far. What I was wanting to know is, are there any sensors on the engine that I need to go through a setup sequence? I changed the knock sensors and knock module from "stock" LT1 style to "stock" LT4 style due to the roller rockers. The throttle body was replaced with a "new stock" one including all of it's sensors. The engine appears to be a little rougher at idle than I was thinking it should be. I installed a CompCams #304 cam (.495/.510 lift) when building the engine, other than some light porting to heads and intake, the engine is close to stock specs. (add in LT headers W/O cats & O2 sims) I haven't done any other changes outside of stock parameters that I can think of. I have a handheld scanner that in can read OBD II systems. If you could tell me what to look for it would be big help.
Thanks for all of the help from the CF members on this project !!!!!!
JTHVETTE
Thanks for all of the help from the CF members on this project !!!!!!
JTHVETTE
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by bogus
the only one is the IAC... TPS is preset...
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Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Originally Posted by JTHVETTE
I changed the knock sensors and knock module from "stock" LT1 style to "stock" LT4 style due to the roller rockers.
JTHVETTE
JTHVETTE
Originally Posted by CFI-EFI
And the IAC has no adjustment. In a new install, there is a procedure to "set" the IAC, not adjust it, but normal driving will set it too. After 50 miles, your IAC has long since been set.
Not realy On the LT1 the IAC will never realy self adjust I have put many hours on my car with poor idle conditions then did the Reset IAC valve pintle position procedure as called out in the servivce manual, the bellow steps. You usaly have to do this a couple of times to get the car perfect, sometimes more. Here is the link for the info https://www.corvetteforum.com/techti...D=94&TopicID=2
A. Depress accelerator pedal slightly.
B. Start engine and release accelerator pedal, run engine for 5 seconds.
C. Turn ignition “OFF” for 10 seconds.
D. Restart engine and check for proper idle operation.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by FD2BLK
Not realy On the LT1 the IAC will never realy self adjust
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Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Originally Posted by CFI-EFI
That surprises me, but in any case it is a matter of getting the pintle properly oriented, or set. There is in fact no "adjustment", as there is in adjusting the timing on an L98 or the TPS on a pre-1990 car.
RACE ON!!!
RACE ON!!!
