» Site Navigation | | » Recent Threads | | | 1999 M3 Swap 09-07-2023 10:10 PM 06-01-2024 03:04 PM 7 Replies, 409,864 Views | | My 318ti build 05-21-2024 04:48 PM 05-28-2024 06:42 PM 1 Replies, 3,664 Views | | OMG!OMG! 05-28-2024 08:53 AM 05-28-2024 08:53 AM 0 Replies, 1,473 Views | | | | | 09-09-2013, 10:59 PM | #1 | Member Join Date: Jun 2003 Location: Dublin, Pa Posts: 57 | Loss of power, engine vibration and squeal squeak noise Well I haves 1995 318ti club sport, 190k on it. Owned it since 1995 with50k on it. Just had the clutch replaced 2k ago. I have noticed that when the engine is cold in the morn and when I leave work that there is a real lack of power especially around 2000 to 3000 rpm. Feels like a flat spot in the power. I have also been getting a squeal/sleek noise. I though maybe that the engine was pinging. It would go away once the engine was warmed up. But when cold it didn't want to rev smoothly through this range. Felt like someone threw an anchor behind the car. Now two weeks ago I changed the plugs, new bav auto spark plug wires, new valve cover gaskets. Seemed to run a little better but not for long. Then last week I put in a new O2 sensor and upgraded BMW transmission from bimmerbum. The only change now is that when I rev the engine I get a ba vibration from 2500 to 3000. I can feel the engine vibrations more in the cabin as well. Still have the flat spot in the power. Suggestions?? __________________ Todd Davis '95 Club Sport - Bosal Exhaust, Koni Shocks not installed yet-RDSport suspension,DASC Supercharger, B&M shifter '04 E46 M3 |'92 Porsche 911 C4 |'99 LR Disco II|'70 Volvo 1800E|'04 V70R Mechanical Design Engineer | | | 09-10-2013, 03:35 AM | #2 | Senior Member Join Date: Jul 2009 Location: Ft Defiance, AZ Posts: 686 | could be the motor mounts __________________ 1999 BMW 318ti 2005 MINI Cooper S | | | 09-10-2013, 04:56 AM | #3 | Senior Member Join Date: May 2013 Location: Seattle Posts: 513 | I'd check belts and pulleys.......and then start warming the car up. | | | 09-10-2013, 07:40 PM | #4 | Member Join Date: Jun 2003 Location: Dublin, Pa Posts: 57 | I figured the engine mounts might be causing the vibration as I had 190 on the original transmission mounts and they were soaked in oil and now I have put in nice stiff rubber mounts. I am more concerned with the loss of power sluggishness that happens when not warmed up. One though is changing the temp sensor and knock sensors. The only other sensors that I have not touched is the crank sensor and cam sensor. __________________ Todd Davis '95 Club Sport - Bosal Exhaust, Koni Shocks not installed yet-RDSport suspension,DASC Supercharger, B&M shifter '04 E46 M3 |'92 Porsche 911 C4 |'99 LR Disco II|'70 Volvo 1800E|'04 V70R Mechanical Design Engineer | | | 09-10-2013, 09:02 PM | #5 | Moderator Join Date: Mar 2007 Location: Maryland Posts: 3,220 | Quote: Originally Posted by bmwtinut I figured the engine mounts might be causing the vibration as I had 190 on the original transmission mounts and they were soaked in oil and now I have put in nice stiff rubber mounts. I am more concerned with the loss of power sluggishness that happens when not warmed up. One though is changing the temp sensor and knock sensors. The only other sensors that I have not touched is the crank sensor and cam sensor. | I'd inspect those for wear, also do a smoke test and a pressure test if you can | | | 09-11-2013, 04:01 AM | #6 | Member Join Date: Jun 2003 Location: Dublin, Pa Posts: 57 | So how are you doing the smoke test? Do you have a DIY machine? And what pressure would I be testing.? __________________ Todd Davis '95 Club Sport - Bosal Exhaust, Koni Shocks not installed yet-RDSport suspension,DASC Supercharger, B&M shifter '04 E46 M3 |'92 Porsche 911 C4 |'99 LR Disco II|'70 Volvo 1800E|'04 V70R Mechanical Design Engineer | | | 11-18-2013, 07:39 PM | #7 | Member Join Date: Jun 2003 Location: Dublin, Pa Posts: 57 | Had a shop do the smoke test when the car was in for inspection and they found nothing. One thing that was found was the temp sensor in the MAF. It was cleared several times and kept on pointing to that. Got a rebuilt AFM from BMW and put that in. Running better with out the flat spot but still getting this chirping/squeal sound when under load when the car is not fully warmed up. Any other Suggestions?? __________________ Todd Davis '95 Club Sport - Bosal Exhaust, Koni Shocks not installed yet-RDSport suspension,DASC Supercharger, B&M shifter '04 E46 M3 |'92 Porsche 911 C4 |'99 LR Disco II|'70 Volvo 1800E|'04 V70R Mechanical Design Engineer Last edited by bmwtinut; 11-18-2013 at 07:44 PM. Reason: added AFM | | | 11-18-2013, 10:08 PM | #8 | Member Join Date: Sep 2013 Location: Summerville, SC Posts: 40 | chirp / squeal. I'd look at changing the belt and tensioner inspect the belt for wear and cracking. A smooth glossy surface on the ribs of the belt means it's well past time to replace. | | | | 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 | | | |