» Site Navigation | | » Recent Threads | | 1999 M3 Swap 09-07-2023 10:10 PM 05-02-2024 08:18 PM 6 Replies, 403,654 Views | | | | | 09-25-2014, 03:39 PM | #1 | Junior Member Join Date: Aug 2014 Location: Independence Oregon Posts: 29 | Weird startup whine? On cold starts, seems to ramp up at start and then goes away within 4-5 blocks of driving. My ears say it is from some piece of gear near the end of the intake manifold - dunno what it is. Sounds kinda like a vacuum cleaner with a bad motor. Some sort of air injection unit? Any thoughts? Driveability isn't affected, idle is ok... | | | 09-26-2014, 07:11 AM | #2 | Senior Member Join Date: Feb 2012 Location: Sacramento, CA Posts: 2,451 | Quote: Originally Posted by calmloki On cold starts, seems to ramp up at start and then goes away within 4-5 blocks of driving. My ears say it is from some piece of gear near the end of the intake manifold - dunno what it is. Sounds kinda like a vacuum cleaner with a bad motor. Some sort of air injection unit? Any thoughts? Driveability isn't affected, idle is ok... | I missed the year of your car, but if it late 96+, it is probably your secondary air pump. Normal operation. __________________ 1998 318ti Sport - "Cali" Schwartz II/Schwartz sport interior, Cali top 1998 318ti Sport - "Max" Schwartz II/Schwartz sport interior, S52 1997 318ti Sport - "Tiny" Schwartz II/Schwartz sport interior 1995 318ti Active - "Blanca" Alpineweib III/Schwartz leather interior Other Current Bimmers: 2006 530i / 2000 2.3L Z3 / 1997 1.9L Z3 / 1999 540it 1997 318ti Sport - "Huera" - RIP 1995 318ti Active - RIP 1995 318ti Sport - "Tiny" Sold 1994 325i Sedan - "Jade" - Sold 1991 318ic - "Bert" - Sold 1985 635csi sold 1984 533i "Max" Sold 1984 318i sold BMWCCA #160411 SUPPORT 318ti.org! CLICK THE LINK ABOVE! Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW! | | | 09-26-2014, 11:07 PM | #3 | Senior Member Join Date: May 2013 Location: Seattle Posts: 513 | Sure enough. That is what it likely is, the description sounded odd. There is a lot of info here on that issue. You will eventually replace the rivets with bolts. It quiets down a bit after that. PS. Not only does BlackBM's beat me to all the good parts, also Johnny on the spot with help. Here is the link to the cooljess statement that helped me out with my issue. http://www.318ti.org/forum/showthread.php?t=29273 Last edited by BRADESTAR; 09-26-2014 at 11:21 PM. Reason: added link | | | 09-26-2014, 11:14 PM | #4 | Junior Member Join Date: Aug 2014 Location: Independence Oregon Posts: 29 | Quote: Originally Posted by BlackBMWs I missed the year of your car, but if it late 96+, it is probably your secondary air pump. Normal operation. | Ah yes - year is handy in diagnosis - 4/1997 build date, so I guess secondary air pump is a strong possibility.. Wasn't making that noise before in my 1 month history with the car though. Any idea on the common replaceable failure item on the secondary air pump? Thanks. | | | 09-26-2014, 11:45 PM | #5 | Senior Member Join Date: Feb 2012 Location: Sacramento, CA Posts: 2,451 | Weird startup whine? Bradestar nailed it. The aluminum rivets loosen and present a gap in the upper and lower pieces. For my last repair, the motor died. I took the opportunity to replace all the Rivets from a proactive standpoint. And Bradestar, I scored another Xbrace today at the yards. I can equip the 4th car now, plus help out a friend this weekend. 😎. Just swift Brah.... Oops.... Can't do math. I'm one short. 😂 1998 & 1997 318ti Sport Schwartz II 1995 318ti Active Alpineweib III __________________ 1998 318ti Sport - "Cali" Schwartz II/Schwartz sport interior, Cali top 1998 318ti Sport - "Max" Schwartz II/Schwartz sport interior, S52 1997 318ti Sport - "Tiny" Schwartz II/Schwartz sport interior 1995 318ti Active - "Blanca" Alpineweib III/Schwartz leather interior Other Current Bimmers: 2006 530i / 2000 2.3L Z3 / 1997 1.9L Z3 / 1999 540it 1997 318ti Sport - "Huera" - RIP 1995 318ti Active - RIP 1995 318ti Sport - "Tiny" Sold 1994 325i Sedan - "Jade" - Sold 1991 318ic - "Bert" - Sold 1985 635csi sold 1984 533i "Max" Sold 1984 318i sold BMWCCA #160411 SUPPORT 318ti.org! CLICK THE LINK ABOVE! Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW! Last edited by BlackBMWs; 09-27-2014 at 12:28 AM. | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |
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