P0660 intake manifold final

[cgng30]

I was playing around my durametrics disgmostic software, and i noticed the above error. it does not go away. I have added a plenum , and a x51 intake/headers. I know all my connections are tight . not sure what this means. can any body shed some light or is this the plenum and air box doing this. thanks

[Loren]

P0660 Electric tuning flap

Possible fault causes

- Short circuit to B+/ground or open circuit in the control line

- Open circuit of power supply to tuning flap solenoid valve

- Tuning flap solenoid valve faulty

- DME control module faulty

[cgng30]

P0660 Electric tuning flap

Possible fault causes

- Short circuit to B+/ground or open circuit in the control line

- Open circuit of power supply to tuning flap solenoid valve

- Tuning flap solenoid valve faulty

- DME control module faulty

thanks loren , pardon my ignorance, but the tunning flap is that the throttle body flap we are talking about.?/

[Loren]

From the Technik book...

"Tuning flap

The resonance intake system is a two-stage version through the switchable tuning flap between the intake distributors inside the perpendicular resonance pipe. This switchable, two-stage resonance intake system can be used to adjust the air oscillations in the intake system to the respective engine speeds to ensure high torques even at low rpms, an even torque curve and high maximum output. This is achieved by having the tuning flap closed at full throttle between 2,600 rpm and 5,100 rpm, but open at lower and higher speeds."

[cgng30]

From the Technik book...

"Tuning flap

The resonance intake system is a two-stage version through the switchable tuning flap between the intake distributors inside the perpendicular resonance pipe. This switchable, two-stage resonance intake system can be used to adjust the air oscillations in the intake system to the respective engine speeds to ensure high torques even at low rpms, an even torque curve and high maximum output. This is achieved by having the tuning flap closed at full throttle between 2,600 rpm and 5,100 rpm, but open at lower and higher speeds."

that explains why i feel like i am loosing power or just my imagination . i checked the pet diagram but i cannot see a relay but a vaccum unit.

[PTEC]

Well the X51 intake is completely different different. The middle section of a normal 997 intake has two tubes with the tuning flap in the rear tube and the throttle body in the front tube. The X51 intake only has one tube and therefore wouldn't have a tuning a flap. So if you have the X51 intake it would make sense that you have this fault. A picture of your engine compartment would help.

[cgng30]

Well the X51 intake is completely different different. The middle section of a normal 997 intake has two tubes with the tuning flap in the rear tube and the throttle body in the front tube. The X51 intake only has one tube and therefore wouldn't have a tuning a flap. So if you have the X51 intake it would make sense that you have this fault. A picture of your engine compartment would help.

my mistake . i meant x51 airbox, the intake is the standard carrera

[cgng30]

From the Technik book...

"Tuning flap

The resonance intake system is a two-stage version through the switchable tuning flap between the intake distributors inside the perpendicular resonance pipe. This switchable, two-stage resonance intake system can be used to adjust the air oscillations in the intake system to the respective engine speeds to ensure high torques even at low rpms, an even torque curve and high maximum output. This is achieved by having the tuning flap closed at full throttle between 2,600 rpm and 5,100 rpm, but open at lower and higher speeds."

that explains why i feel like i am loosing power or just my imagination . i checked the pet diagram but i cannot see a relay but a vaccum unit.

well i found what the problem was. the cable to vacuum/solenoid valve was not even pluggged in, not sure if i did not plug it back in when i did the airbox last year or did it just come loose, it is missing the metal clip on the connector, so it will probably come loose . i will have to some figure out how i can even get the part, it looks like a c metal wire that snaps over the plastic connector. any suggestions loren

thanks agian loren

ronnie