1994 fd high pitch noise *** please help ***
12-19-20, 05:49 PM
#1
Full Member
Thread Starter
1994 fd high pitch noise *** please help ***
Hello fellow rotarians,
I just purchased a 1994 RHD FD in the UK and a buddy from FDOC.co.uk tested it out. He found that with the key in ON position the car makes a strange high pitch noise for about 10 sec. Here is a link to the video of this noise. Has anyone here ever heard anything like this? The car has a HKS single turbo intake and a PFC mapping for sea level.
thanks
I just purchased a 1994 RHD FD in the UK and a buddy from FDOC.co.uk tested it out. He found that with the key in ON position the car makes a strange high pitch noise for about 10 sec. Here is a link to the video of this noise. Has anyone here ever heard anything like this? The car has a HKS single turbo intake and a PFC mapping for sea level.
thanks
12-21-20, 09:40 AM
#3
RX-7 Bad Ass
iTrader: (55)
^Yep, I've seen ISC's make weird noises. White connector on back of upper intake manifold.
Dale
Dale
12-22-20, 05:32 PM
#6
Sounds like the kettle is ready 
Unplug the air pump and see if the noise persists. Check the sound this cheeky bugger makes: https://www.rx7club.com/3rd-generati...video-1149048/
Edit - just realized that I read your original post wrong. If it's happening with the key on but engine not running, check if one of the vacuum chambers is leaking air. IIRC, I think some of them hold air/vacuum with the car off. Energizing the electrics via the key on could trigger a solenoid to fire off and bleed air out.
Unplug the air pump and see if the noise persists. Check the sound this cheeky bugger makes: https://www.rx7club.com/3rd-generati...video-1149048/
Edit - just realized that I read your original post wrong. If it's happening with the key on but engine not running, check if one of the vacuum chambers is leaking air. IIRC, I think some of them hold air/vacuum with the car off. Energizing the electrics via the key on could trigger a solenoid to fire off and bleed air out.
Last edited by gracer7-rx7; 12-22-20 at 05:35 PM.
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01-05-21, 10:44 AM
#8
Full Member
Thread Starter
Will check the ECU connectors once I get the car in about 10 days. Its on the vessel coming from the UK. I suspect connectors on ECU and/or instrument cluster may be loose since some dashboard instruments are not working.
01-05-21, 04:09 PM
#9
Full Member
Thread Starter
Sounds like the kettle is ready
Unplug the air pump and see if the noise persists. Check the sound this cheeky bugger makes: https://www.rx7club.com/3rd-generati...video-1149048/
Edit - just realized that I read your original post wrong. If it's happening with the key on but engine not running, check if one of the vacuum chambers is leaking air. IIRC, I think some of them hold air/vacuum with the car off. Energizing the electrics via the key on could trigger a solenoid to fire off and bleed air out.
Unplug the air pump and see if the noise persists. Check the sound this cheeky bugger makes: https://www.rx7club.com/3rd-generati...video-1149048/
Edit - just realized that I read your original post wrong. If it's happening with the key on but engine not running, check if one of the vacuum chambers is leaking air. IIRC, I think some of them hold air/vacuum with the car off. Energizing the electrics via the key on could trigger a solenoid to fire off and bleed air out.
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