LS1 prob need help

[wpv8z28]

hey guys im new to tampa racing ive been checking it out and it seem people are very helpful here with probs on ls1 well here mine i have had it stoped for about lets say 9 months turn it on once in a while and every time i do it revs high at 2.5 rpms till i turn it off and on again also i have engine light coming on one is the o2 that i know and the other is low voltage after battery and every thing is chared up so i erase it abd it pops back up any one know or has gone through this ? or can help thanx

[BLUE2KSS]

do you have the stock MAF in it?

O2's could also be the issue like you stated

[myltwon]

from what I gather you said the car sat for 9 months right?

I'd check for dryrotted rubber hoses causing a vacuum leak

[EliteZ]

If when he shuts it off and turns it back on the idle is back to normal how can it be the vacuum hoses?

[2kSnakeater]

ls1tech.com check there, and change those O2 sensors BEFORE you ask or do anything else.

[myltwon]

If when he shuts it off and turns it back on the idle is back to normal how can it be the vacuum hoses?

kinda missed that part, but the IAC valve could be compensating

[myltwon]

o2 sensor readings are only account for in closed loop (aka when motor is warm) so if it's all problems that are occur at cold start I'd look at sensors that read in open loop mode like the MAF

[HybridSS]

what EXACTLY does the voltage ode say. Could it be Thottle postion voltage low? Have you modified your throttle body? Sounds like the TB maybe sticking open some. Either that or an intermittant vacum leak.

[myltwon]

also forgot, could be the iac motor (if ls1s have em that is)

[wpv8z28]

thanx guy for all the info yes i did have a hose that was melted replaced still does it though and no i have not improved the throtle body on it at all its all stock i did put these crappy bosch platium 4 plugs and it seem like i get a miss
code once in a while but i have to replace those o2 sensors is a must and then i plan to go from their and recomendation on where on which to get also if i can get them good and cheap any where or any one also some plugs that would help alot with that miss that pops up

[wpv8z28]

thanxs to all you guys here at tampa racing at gm tech and lets bring the ls1 back at least once a week on the streets
:cool:

[myltwon]

ngk tr55's stock gapping for plugs

o2's...I run discount auto bosch ones no problems here

[wpv8z28]

ngk on american how do they work for you also do you know any one who will put them in cause i did it once but never again the back to are a pain in the ass to get out:evil: id rather pay for that to be done also now im gonna change the oil before i start runnin her again how purple stuff or stick with mobile one

[myltwon]

royal purple is overkill on a basically stock car IMO, $40+ for just oil is too much IMO

as far as ngk, I run them, pretty much most nitrous lt1/ls1 guys love the tr6 like I have in mine, tr55 is a great stock replacement for n/a cars

[Country Boy]

royal purple is overkill on a basically stock car IMO, $40+ for just oil is too much IMO

as far as ngk, I run them, pretty much most nitrous lt1/ls1 guys love the tr6 like I have in mine, tr55 is a great stock replacement for n/a cars

Bad advice about the oil. Put the best in you can buy. Its the blood of your motor. I run Redline.

I run NGK TR55s and like them.

[myltwon]

Bad advice about the oil. Put the best in you can buy. Its the blood of your motor. I run Redline.

I run NGK TR55s and like them.

well there is no such thing as too good for your motor, I just think $50 or so
bucks just for oil when your car is basically just a daily driver isn't worth it

if you have a more modified motor and your car sees plenty of regular abuse I
can understand running the "better" oils out there.

I wasn't sure which catagory this person's car fell under more

[BLUE2KSS]

i dont think redline is SAE certified if i remember right

[wpv8z28]

so i guess i will stick with mobil 1 super syn ok now no one knows how much they charge to change out all the plugs to ngk's:) and next week ill change the o2's and oil and then start bringing her up to par what do you guy think about a dry nos kit? let me know whats good and whats not i like wet but i dont want to deal with direct port injection

[Country Boy]

If you want to dabble in the N2O world, I highly suggest you learn all about it by reading the N2O tech on LS1Tech. There are wet kits that arent direct ports. I used to have one. NX makes some super nice stuff.

About the SAE cets. I think thats because Redline and Royal Purple both use a different base stock than the standard oil. Heres a good reading about redline: http://www.redlineoil.com/whitePaper/motoroils.pdf

[wpv8z28]

well thanx for that info. ok are they easy to install and what beginer mods you think i should do im just did a short shifter i want to do a chip and i did the k&n air filter i want to do a bigger throtle body any thing else i can do beside cam work and valve work to produce more power im just trying to go NA so no turo or super charger in mind