Vantage V8 Fuse 22 Question

[Slidefighter]

After success with my first question on my new this month (to me) 2007 Vantage, I'm emboldened to try my luck once again.

On my "delivery drive" from Dallas to South Carolina, I never noticed a "pump noise" associated with turning the key on but now that it's home, I do. Sounds like a fuel, air, or hydraulic pump running at 10-20 Hz or so. It runs for 3-5 seconds and then shuts off, back on for one second again and then off again.

Any help? Could it be associated with low battery voltage or is normal and I just hadn't heard it before---the fuel pump priming the FI system or some such?

Slidefighter

[Slidefighter]

_Sorry for the misleading Topic heading_. I originally thought it might have something to do with replacing fuse 22 but further troubleshooting suggested not. I'm pretty sure I never heard that noise before reinstalling fuse 22, though.

Any help would be appreciated.


Slidefighter

[Emilio Largo]

Possibly the A/C compressor regularly switching on and off? It does not run permanently. At least not in my car.

Try switching the A/C off. Will the noise then be gone?

[djmac56]

Slidefighter said:

After success with my first question on my new this month (to me) 2007 Vantage, I'm emboldened to try my luck once again.

On my "delivery drive" from Dallas to South Carolina, I never noticed a "pump noise" associated with turning the key on but now that it's home, I do. Sounds like a fuel, air, or hydraulic pump running at 10-20 Hz or so. It runs for 3-5 seconds and then shuts off, back on for one second again and then off again.

Any help? Could it be associated with low battery voltage or is normal and I just hadn't heard it before---the fuel pump priming the FI system or some such?

Slidefighter

Sounds to me like the pump solenoid thing that primes on the key turn to move the exhaust flaps. It only does it if you have the fuse in and is completely normal.

[dwell]

Slidefighter said:

After success with my first question on my new this month (to me) 2007 Vantage, I'm emboldened to try my luck once again.

On my "delivery drive" from Dallas to South Carolina, I never noticed a "pump noise" associated with turning the key on but now that it's home, I do. Sounds like a fuel, air, or hydraulic pump running at 10-20 Hz or so. It runs for 3-5 seconds and then shuts off, back on for one second again and then off again.

Any help? Could it be associated with low battery voltage or is normal and I just hadn't heard it before---the fuel pump priming the FI system or some such?

Slidefighter

Is it a 'sportshift'? If so its the pump priming the system - mine does it when unlocking the car. Regards, Dave

[Slidefighter]

Thanks for the suggestions, everyone. Weather has been too bad the last couple of days to take the car out, but I'll check it all out as soon as it clears. I suspect that the idea that the noise is from the pump associated with the exhaust valve is correct since I never heard it until I plugged F22 back in. The only thing that makes me wonder is that it didn't quit when I pulled the fuse again.

Only tried it once, so it might take an iteration or two to eliminate it. I'll report back if I can certify that's what's happening (on my car, at least).

Thanks again, big help!


Slidefighter