Turbo Howl

[Houser04lly]

Looking for any help ..I'm getting that howling sound you get when the trucks cold yet the motor is up to regular temp and when I roll into the throttle Its still howling its sounding like its coming from the turbo ... Any replies would be greatly appreciated ...

 

[TeaBagger2006]

Turbo problem. Remove your intake and check

 

[Houser04lly]

Ya that's what I figured .. should I check shaft play if the shaft feels normal what could it be

 

[TeaBagger2006]

could be the vanes, they are stuck open. are you making boost? any codes? might be the vane position sensor. when i had that damn screwdriver in my turbo (my avatar,lol) i had a howl and no boost.

 

[Houser04lly]

well it seems to be making some boost no gauges at the time just not as much power.. is there a way I can tell they are stuck open and is there maybe a way I can fix this problem or diagnose some other things with the turbo

 

[Houser04lly]

Its more like the fan clutch roar u get when the truck is cold for about a block but I drove her like 30 miles got to normal engine temp and still a roar the whole time driving its late so I have not got to check anything.. still unsure what I can diagnose myself .. wouldn't you get a roar if the vanes are stuck shut sounds more like they are stuck shut as if the turbo was helping the engine warm.. I live in Florida and we are having a cold front coming in but still something doesn't seem right..

 

[TeaBagger2006]

oh....its that kind of howl,lol
usually in cold mornings it will do that but should go away as the engine warms. my uneducated opinion is the clutch on the fan is going bad if it wont unlock. that sucker draws a lot of power when its engaged

 

[Houser04lly]

ya that makes sense is there a way I can double check just incase ... that would be better than a turbo problem:woott:

 

[PAT]

Take the fan off and drive around. If The noise goes away... It's the fan.

 

[Poltergeist]

Move here to Turbo Talk.

 

[Houser04lly]

If I take just the fan off not the clutch itself ? I know taking the clutch off is A PITA

 

[TeaBagger2006]

dude, go look under your hood and you will see how easy it is. you have to remove the shroud.they come off as 1 piece

 

[hondarider552]

If I take just the fan off not the clutch itself ? I know taking the clutch off is A PITA

Takes 10 minutes.

 

[Houser04lly]

Thanks I appreciate it guys ... I took the fan off once to get to the crank sensor I just disnt remember it being one piece

 

[Mike_S]

Thanks I appreciate it guys ... I took the fan off once to get to the crank sensor I just disnt remember it being one piece

The fan and clutch assembly threads off the pully with a big wrench and a spanner for the pully hub. (or a big wrench and a big hammer if youre impatient like me)

 

[Houser04lly]

Thanks man I appreciate that I knew it was somewhat of a PITA to get it off holding it back while you spin off the pully ..Im gonna pull of the clutch and see if thats the problem

 

[Houser04lly]

The nut on the clutch fan is right hand thread so it loosens towards the driver side if your looking at it correct?

 

[PAT]

Did you get it off?

 

[Chevy1925]

The nut on the clutch fan is right hand thread so it loosens towards the driver side if your looking at it correct?

If your standing infront of the truck lookimg so the firewall is behind the fan, you turn it toward the passenger side. A good air hammer takes fans off quick as well

 

[Houser04lly]

Havnt got it off yet im going to barrow my fathers air hammer.. I appreciate the advice I will post when I get it off.. just switched from working nights 7 months straight to working days Ive been beat just have to get over this first week what a :baby: lol