low boost slow spool! HELP!

[turbotyphoon69]

ok i need to get this fixed buy monday because i have h.s. drags!

With that said my truck only spools to about 4lbs, and takes a long time to get there. Data master sais the WGDC is 100% but i dont understand what that means, i make the assumption that its sayin the WG is open. Any way i dont know what the problem is and the truck has new silicone vac lines, plugs, wires, cap rotor, and knock sensor. help is greatly appreciated!

* data master says the truck is in closed loop?
* i disconnected the WG and still no spool

Is a clogged CAT a possibility?

 

[Deanzsyclone]

Re: low boost slow spool! HELP!

Is a clogged CAT a possibility?

Yup that could be an issue. Hell when I removed my cat my T-68 spooled real fast. Also check to see that the turbo spins freely, maybe it's bearings are freezing up?

 

[turbotyphoon69]

Re: low boost slow spool! HELP!

I cheked it spins freely and im getting a Rich 02 sensor code too...

 

[tbauer03]

Re: low boost slow spool! HELP!

get a boost valve i think www.boostvalve.com

 

[SeattleSy#1255]

Re: low boost slow spool! HELP!

remove the vacuum line from the WG actuator and let the turbo spool freely...BE CAREFUL as the only thing controlling boost is your foot, so watch your boost gauge...don't just floor it or you'll get 25+ psi and go boom... See if that fixes the problem...it could help in Dx the problem.

 

[syclone#2659]

Re: low boost slow spool! HELP!

i kind of have the same problem when i slowly speed up and let the turbo slowly spool up the boost sticks around 7 or 8 lbs and i have to step into the gas alittle more to get it unstuck and get more boost. and lately when i step about 3 quarters way down at crusing speed (30mph) it should build boost pretty quickly and kick down in gear, but lately it doesnt kick down and the turbo spools all slow. i think my wg is sticking, i tried lubing up the rod. i changed all the vac lines and they are tight, new stock turbo. and i get 14 to 15 lbs on wot. so does anyone have any ideas on what it could be. could my stock wg be crappy? it looks pretty new. so now if i disconect the wg actuator and i get good steady boost i can assume that the the wg actuator is shot? could it be my cat? is it good to gut it out on a stock motor? also i diconected my egr the other day blocked of the vac line at the tee valve and took of the solinoid. does this hurt performance? i havent thrown a code yet after a week of driving it this way. and i have the stock chip.

 

[SeattleSy#1255]

Re: low boost slow spool! HELP!

the stock WG isn't worth a damn...i'd say 75% of stock trucks have some sort of boost issue, largly due to this.

 

[syclone#2659]

Re: low boost slow spool! HELP!

what can i do then. i get full boost it just doesnt build quick and steady. could my cat be plugged? is there a way of checking? also am i able to gut the cat on a stock motor? or will i overboost to much. i just want faster boost. how can i check if my wg is the problem?