95formulalt1

iTrader: (13)

my 00 ls1 will not rev past 2k. when im driving the car it has no power. i need help

conan

iTrader: (5)

Is the ses light on or does it flash? Possibly a cloged fuel filter, fuel pump might be taking a dump, bad coil.

FatZ28

iTrader: (1)

The cats could be clogged as well.

ads_99ta

what does it do after 2k rpm? does it just feel dead, or does the car die or what?

wickedformula

iTrader: (1)

need more information on what the car does at 2grand. I had a BMW do this to me and it turned out the cat was no good. im not saying start there but it cud be a problem. Mileage? a fuel filter as well as a fuel pump could be the issue to. lets get some more details on what the car does.

BlackScreaminMachine

iTrader: (17)

Sounds like clogged cat, there has to be an ultra restriction.

99345hp

There has to be a restriction in there somewhere. Sounds like a clogged cat to me.

95formulalt1

iTrader: (13)

i just installd a new fuel pump.didt fix it. when im driving the car the only way to get it to go past 2k is drop in in 1st. and even when i do that theres no power. i tryed doing a burn out to see if it would do anything and has soon has the motor hit 2k it just stayed there. im lost and thinking of getting rid of it....or set it on fire lol. it back fires at 2k if u hold it and sometimes it will rev up past 4k but idk what it could be. i just did a tune up befor i installed the motor last summer and only put mayb 3k miles on since then.

95formulalt1

iTrader: (13)

oo and theres no light on.

FatZ28

iTrader: (1)

My friends 93 Z had the very same problem and it ended up being the cats. Might want to check that out.

SpaZMaN

iTrader: (5)

Unbolt the cats and run straight headers to see if anything changes. Also look into the cats to see if the "honeycomb" is messed up.

BlacKBirD25

had a bird come in the shop i worked at before doin the same kinda thing.. cant remember if it was the muffler or the cats that were clogged up.. but ya its more then likely cats are clogged up.. just cut them off and get o2 sim's

95formulalt1

iTrader: (13)

ya im thinking it might be the cats. i replace the the fuel filter last night and it didnt do a thing. i have the SLP loud mouth 11 no mufler.

95formulalt1

iTrader: (13)

the car is also hard to start. i have to rev it to keeping it running then after a few mins its fine....???

snake charmer

iTrader: (118)

a bad maf can cause problems . the o2s can be a problem . that or it could be the injectors .

ae13291

iTrader: (8)

it is the throttle position sensor if it feels like its hitting rev limiter

99345hp

yeah, i agree with the last few posts too. MAF or throttle position sensor could be the culprit. I would unbolt the exhaust right in front of the cats. If that doesn't solve it, then go after the other two sensors. It definately isn't the O2 sensors. I drove my car around for who knows how long with wires torn out of one of mine.

BlackScreaminMachine

iTrader: (17)

From what I understand even if he goes WOT, its not going past it, he managed 1 4k pull at best.

When these cars go WOT the MAF is no longer a factor, the car goes to it's command tables, thats why they are tuned in speed density. MAF's factor in for part throttle and driveability.

He clearly has a restriction, I have had that happen on 3 different cars, and one bud's car with a 402 n2o motor, a after market cat popped and a baseball sized chunk had him down 80 hp....

95formulalt1

iTrader: (13)

the throttle position sensor is new just installed it.im going to look at the cats tonight.

95formulalt1

iTrader: (13)

ok its not the cats!!! i am so lost..i want to set it on fire and buy a mustang haha