68 Chevy C10 with stock 2000 5.3 with headers and rear o2's deleted.
cant seem to get the damn thing to idle despite all my efforts. any suggestions would be much appreciated.
Attachment 145294Attachment 145295
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68 Chevy C10 with stock 2000 5.3 with headers and rear o2's deleted.
cant seem to get the damn thing to idle despite all my efforts. any suggestions would be much appreciated.
Attachment 145294Attachment 145295
Whats your fuel pressure?
Those fuel trims aren't doing so good, they look super lean.
Also this tune file is for a 4.8, you'll want to copy over in 5.3 data for cylinder volume, VE tables, idle airflow tables and so on to make it run correctly. Plus go in and disable all your rear o2 sensor codes and yadda yadda. Also check that you have zero vacuum leaks.
my apologies. it is a 4.8. new pump for LS, using c10 tank, aftermarket pump and reg, with return builtin. checking pressure now
100+lbs....lol
ill start there. thanks for the common sense...lol
sometimes it takes another set of eyes to see, or someone not pissed thinking clearly.
Yeah, 100psi won't let the injector work right. See what it's like once it's back down to 58ish.
this is also a great resource for idle tuningQuote:
Originally Posted by Whitten80
https://forum.hptuners.com/showthrea...e-(w-pictures)
i'll bet the return from the regulator is blocked or the regulator is hooked up wrong.Quote:
Originally Posted by Whitten80