Cold Start Whistle GTP

[Cbierniat]

Sometimes when i start my car only when its cold seems like i can hear a whislting noise from my car while im inside...sounds like it might be comin from my airbox or the drivers side part of the engine any ideas?? many problems with this car i hate it buti love it

[BNaylor]

Originally Posted by Cbierniat

Sometimes when i start my car only when its cold seems like i can hear a whislting noise from my car while im inside...sounds like it might be comin from my airbox or the drivers side part of the engine any ideas?? many problems with this car i hate it buti love it

Do you have the stock air box or a CAI/FWI? Sounds like either air or a possible vacuum leak. Make sure all the rubber ducting in the air intake - throttle body is properly connected and tight. Check all vacuum hose line connections to all emissions components to the engine, supercharger and brake booster.









Thrasher CAI, DHP v1.0 PCM, SLP Headers,
3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT,
u-bend delete, 160 TS, ZZP Stage 1 72mm TB,
TB spacer, MSD 8.5mm wires, Autolite 103,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials
1/4 ET: 13.210 sec. @ 104.490 mph
0 - 60 ft: 1.945 sec.

[Cbierniat]

i checked the rubber on the intake b4 and it wasnt the problem cuz thats where it sounded like it was coming from and yes my intake is all stock...how do i check all the vacuum hose lines???

[BNaylor]

Originally Posted by Cbierniat

i checked the rubber on the intake b4 and it wasnt the problem cuz thats where it sounded like it was coming from and yes my intake is all stock...how do i check all the vacuum hose lines???

You'll need to pull the cover off the supercharger. Vacuum lines are all over the engine. Vacuum lines feed the brake booster, evap. emissions purge valve, fuel pressure regulator, SC boost bypass, etc. The throttle body has the main vacuum lines feeding out. About all you can do is a visual inspection and maked sure the hoses are properly secured to each component and not cracked. Also check the air filter and make sure it's seated properly in the air box.








Thrasher CAI, DHP v1.0 PCM, SLP Headers,
3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT,
u-bend delete, 160 TS, ZZP Stage 1 72mm TB,
TB spacer, MSD 8.5mm wires, Autolite 103,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials
1/4 ET: 13.210 sec. @ 104.490 mph
0 - 60 ft: 1.945 sec.

[jimmyv-21]

how many miles?

bnaylor- could be supercharger/oil????

[Cbierniat]

126k miles no tune up yet but comin within a few weeks...cars dyin a 4 door GTP with GTP across the windshield like minepulled up next to me and i had to blow em off cuz mine doesnt go anywhere??

[BNaylor]

Aren't you in the process of putting new plugs or wires in, etc? Also, you stated in another post that you had the supercharger coupler replaced so you should have new SC oil.









Thrasher CAI, DHP v1.0 PCM, SLP Headers,
3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT,
u-bend delete, 160 TS, ZZP Stage 1 72mm TB,
TB spacer, MSD 8.5mm wires, Autolite 103,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials
1/4 ET: 13.210 sec. @ 104.490 mph
0 - 60 ft: 1.945 sec.

[Cbierniat]

yah im in a lot of the posts with the 99gtp lol many problems with it but everything seems to be fixed so far...no problems yet but ive only had it back for a day