XRBOY85 New Member 23 Member For: 3y 1m 5d Posted 01/01/22 01:27 PM Share Posted 01/01/22 01:27 PM Hello everyone I have a xr6 turbo bf MK2 and the boost solenoid is making a buzzing noise/rattling when I turn the key ignition on to when I am priming the fuel pump and the noise is still there and also when the car starts up when I disconnect the plug from the boost solenoid it goes away so it is confirmed it is the boost solenoid I purchased a new boost solenoid one from ford and it still does the same thing as stated above I have not checked if its the wiring or voltages as of yet or if its in the tune here is the video link of video of the noise from the boost solenoid https://www.youtube.com/watch?v=XoNQqqmz1UQ&ab_channel=ramgeo any ideas or is it normal but does not sound right any help would be great Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,198 Member For: 16y 9m 26d Gender: Male Location: Melbourne Posted 02/01/22 12:09 AM Share Posted 02/01/22 12:09 AM wow, that's nuts... sounds like the solenoid is being switched on and off around a hundred times per second... (probably less than that, but you get my point) I'd be getting the wiring to the solenoid checked asap, as it'll just chew through new solenoids doing that as they're not designed for that sort of operation. Link to comment Share on other sites More sharing options...
hjtrbo Bronze Donating Members 320 Member For: 14y 17d Posted 02/01/22 05:34 AM Share Posted 02/01/22 05:34 AM You mentioned the tune. Was that changed and then the noise started straight away? Link to comment Share on other sites More sharing options...
XRBOY85 New Member 23 Member For: 3y 1m 5d Posted 02/01/22 05:44 AM Author Share Posted 02/01/22 05:44 AM I had bought it just recent the car and was tuned from previous owner but didnt notice it that much when driving at all until I just turned the key to just before starting it to crank then can hear it doing that noise from the solenoid Car drives great normal everything but when it goes to boost up say over 12-14 psi to full throttle it starts to cut out like a overboost maybe or jerky cut out Maybe I should just disconnect the plug from the solenoid and just drive it for now Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,198 Member For: 16y 9m 26d Gender: Male Location: Melbourne Posted 02/01/22 05:48 AM Share Posted 02/01/22 05:48 AM If you disconnect the solenoid you'll likely boost to the moon and be in a real-life engine-explosion zone... you don't want to do that. If you re-route the hose that goes from the front of the turbocharger to the solenoid to go to the wastegate actuator instead, then you get minimum spool and a maximum boost level of the rating of the wastegate, which is an adequate temporary workaround to boost problems. 1 Link to comment Share on other sites More sharing options...
XRBOY85 New Member 23 Member For: 3y 1m 5d Posted 02/01/22 05:54 AM Author Share Posted 02/01/22 05:54 AM Ok thanks was going to do that also and just cruise around for now and maybe see a mechanic/tuner as could be voltage tune related or a electrical issue Thought maybe someone would have had a similar issue on that noise or would know Link to comment Share on other sites More sharing options...
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