03 Xr6t Issues

[trickdoubt]

hey guys got some issues with my 03 xr6t 4spd auto...

current mods are after-market fmic

(1) pull up to a set of lights car gets a rough idle and 9 times outta 10 it stalls and wont start easily...

(2) 3rd gear car wont rev past 4250rpm (starts to spit n sputter)

(3)zero power compaired to my dads xr6t (100% stock)

any help would be greatly appreciated

[seventytwo]

Block fuel filter would be my guess or a fuel pump on the way out.

[Superdan]

yeah we have issues with 03XR6T too

But seriously, has the car been tuned?

[trickdoubt]

not that I know of!!!

[Guest]

yeah we have issues with 03XR6T too

Suck a big one Dan...

trickdoubt, if you're car isn't tuned & you have a decent cooler on it there's a good chance you're overboosting. that will cause the car to run rough at higher rpm because there isn't enough fuel in the Air/Fuel mixture...

This will also cause your rough idle after a quick squirt. You now have increased air flow coming in through your intake system & into your engine, but no where for it to go due to the stock exhaust (namely stock cat) in place. This means that the valves can't fully shut as the stock valve springs aren't upto the task. Hello valve float!

Two options:

1. Replace aftermarket cooler with factory unit.

2. Get a tune to suit the new cooler. This is a waste imo as you would really want to get injectors, pump & cat to optimise the tune/cooler combo.

My advice would be to either fork out for tune, squirters, pump & cat to get a safe/repeatable 280 - 290rwkw or return to stock.

Hope this helped

[trickdoubt]

cheers for all your help guys, been thinkin bout wen the issue started n it was bout the same time I put the cooler on...

so at the moment the car goes in april for

a manta 3" exhaust turbo back

flash tune

then a run on the dyno to c how everything goes!!!

[Superdan]

Excellent, make sure you come back and post up how she went!!

[The_Bogan]

coil packs and plugs I would say.

[trickdoubt]

so the issues just got worse car wont rev past 3000rpm in all gears now... plus the fact that the underside pannel decided to detatch itself witch also took the front bumper off... so with everything that went wrong in those few minutes has got me thinking about selling the turbo, paying out the loan n gettin an el falcon!!!