Is this a failed DV?
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Joined: May 2003
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Is this a failed DV?
When I move out of 1st gear, the RPM's are between 2000-2500. I'm not shocking the car whatsoever. I accelerate and shift into 2nd at about 4000 RPM. Normally during the period between 1st and 2nd, I can hear the air being forced into the turbo, and when I depress the clutch to shift gears, I hear one long psssssssssst of air being released. Then I hear the turbo winding up again and this pattern repeats.
Just today, I started to hear fast, multiple repetitions of psst, psst, psst's when I depress the clutch to shift. It's as if the car is sputtering or coughing the air when I depress the clutch to shift.
Is this a faulty DV or possibly as cracked hose somewhere? I am still under warranty and the car is 100% stock except of a K&N air filter.
I wanted to have some kind of idea of the problem before taking the car in for service.
Just today, I started to hear fast, multiple repetitions of psst, psst, psst's when I depress the clutch to shift. It's as if the car is sputtering or coughing the air when I depress the clutch to shift.
Is this a faulty DV or possibly as cracked hose somewhere? I am still under warranty and the car is 100% stock except of a K&N air filter.
I wanted to have some kind of idea of the problem before taking the car in for service.
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Joined: Aug 2000
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What you hear is the wastegate. DV must have failed, thus wastegate opens instead.
If the DV (710N) cannot open to vent air back to the intake, the N75 that controls the turbo's wastegate will open the latter for boost to drop back to normal.
I know 'cause I have a very stiff DV from a 996 GT2 that causes the wastegate to open instead when boost is low. Sounds exactly like you described.
I know 'cause I have a very stiff DV from a 996 GT2 that causes the wastegate to open instead when boost is low. Sounds exactly like you described.
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Good to hear I was not out in left field >>>
I was able to squeeze in and have it repaired later today. Pretty impressive since it's a Saturday.
I'll let them do one replacement so the car has a record, but I'll be moving to the Forge Race DV soon. I'll need it when I chip it anyway. No better time than the present to start modding.
Thanks again!
I'll let them do one replacement so the car has a record, but I'll be moving to the Forge Race DV soon. I'll need it when I chip it anyway. No better time than the present to start modding.
Thanks again!
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Check the 2 hoses coming off the turbo exit manifold under the engine cover.
I have blown one of those off twice and broken the other hose twice. Replaced both hoses with larger OD and reinforced hoses and have had no problems since.
Check all your hose going/coming to both the DV and N75 valve.
Check all your hose going/coming to both the DV and N75 valve.
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UPDATE: It was a failed DV
I tech replaced the DV with a model 710N and also replaced the intake hose as well.
To avoid this problem in the future I'm going to move toward a Forge Race DV. Steve (TTschwing) liked this model and that's good enough for me to give it a try.
Thanks for the replies!
To avoid this problem in the future I'm going to move toward a Forge Race DV. Steve (TTschwing) liked this model and that's good enough for me to give it a try.
Thanks for the replies!
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