ls1 intake swap
#1
ls1 intake swap
hi all, i have a problem that i need help with. i have a 5.3 truck engine that i put a ls1 intake on, ran fine with truck intake ,but with ls1 intake i have a high idle that i cant get rid of? i checked for vacuum leak but found none? do i need computer re tuned ?
#5
TECH Senior Member
iTrader: (39)
For some reason doing it that way doesn't work nearly as well with plastic intakes. Why I don't know. If you have a scanner or data logger watch the STFT's or 02 sensors while spraying.
Also make sure the throttle cable is releasing all the way and that the cruise control cable has slack in it.
Are you using an LS1 throttle body or the one off the 5.3?
Also make sure the throttle cable is releasing all the way and that the cruise control cable has slack in it.
Are you using an LS1 throttle body or the one off the 5.3?
Trending Topics
#13
Map sensor in . All plugs in. Egr plate not leaking ? Is it possible to spray brake cleaner under foam on bottom of intake to see if maybe I have a leak on the low side of intake ports?
#15
hi guys , i figured it out! combination of slight leak at egr, and something going on with ls1 tb ? fixed leak at egr, and put on truck tb and it idles great! any ideas why ls1 tb would cause high idle? thanks for all your help!