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#1. Re: [E36M3] Oil (Again) - from Robert Chay
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Date: Sat, 10 Aug 2002 19:52:59 -0400 From: Robert Chay <rchay@mindspring.com> Subject: Re: [E36M3] Oil (Again) I've used Castrol SynTec 5w50 since I got my car in 98. I played with 10w30 and found that I got less mpg and the car felt sluggish. Switched back and all was well again. I've used this oil in 100+ deg heat at Willowsprings and Buttonwillow with no probs. Not even the infamous lifter tick (I overfill 1 qt). I've also never experienced any oil burning. Not a drop. Of course, YMMV. Mobil also makes a 5w30 and 0w30. I would go either of those if you simply MUST get Mobil 1. -Bobby ----- Original Message ----- From: "Chuck Hanson" <chanson60@comcast.net> > > What weight of Mobil 1 do you guys use in your M3's? I have a '97 and live > in a fairly warm climate where it regularly reaches the low 90's during > summer months. I occasionally autocross my car in the heat as well. > > 10W40 seems like it would be about right but of course they don't make one. > How about 10W30 vs. 15W50? > > Chuck Hanson > '97 M3/4
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#2. under drive pulleys - from Gary A. Preece
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Date: Sat, 10 Aug 2002 20:31:02 -0400 From: "Gary A. Preece" <gapreece@entreky.net> Subject: under drive pulleys Wayne or anyone else that has them: Has your car blown up because of your pulleys? Inquiring mind wants to know. Gary Preece 95 M3 pushing 100k with new stainless brake lines (today) PS - why does brake fluid feel so warm when it is running down your arm and into your armpit? --- [This E-mail scanned for viruses by Declude Virus]
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#3. Re: [E36M3] under drive pulleys - from Jeff A
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Date: Sat, 10 Aug 2002 19:54:48 -0500 From: "Jeff A" <aabel@austin.rr.com> Subject: Re: [E36M3] under drive pulleys Nope. Not me. But I pulled off my URI UDP after about 1 year of use, and will put in a non-crankshaft based UDP such as the current Evosport offering, or a competing offering from UUC or Rogue once such alternatives come to fruition. Recently, use of crankshaft-based UDPs have given me pause as a result of Dinan's well circulated white paper and this: http://www.ntpog.org/reviews/underdrive/pulley.shtml. While a prelude, an inline four, physics remain the same. Jeff > Wayne or anyone else that has them: > > Has your car blown up because of your pulleys? Inquiring mind wants to > know. > > Gary Preece > 95 M3 pushing 100k > with new stainless brake lines (today) > > PS - why does brake fluid feel so warm when it is running down your arm and > into your armpit? > > --- > [This E-mail scanned for viruses by Declude Virus] > > > > ************************************************************* > List Commands > UNSUBSCRIBE - (in subject line) unsubscribes you from the mailing list. > DIR - sends a listing of files available in the list's GET directory. > GET filename1.ext,filename2.ext - sends the requested file(s). > > To issue a command/request to the server: > Send a message with the command you wish executed as the > subject of the message to the email address e36m3@bmw-m.net. > ************************************************************* > >
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#4. Oil (Again) - from Paul Elliott
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Date: Sat, 10 Aug 2002 22:10:23 -0400 From: "Paul Elliott" <elliott.paul@worldnet.att.net> Subject: Oil (Again) Chuck, >>10W40 seems like it would be about right but of course they don't make one<< So what....Amsoil does...And its a damn good one. Paul Elliott --------------------------------------------------------- '99 White M3; < 45K miles; Dinan stage II SC kit with 6" RMS crank pulley: 11 psi; AA Water Injection; Fikse FM-10s; X-Brace; Dinan Koni Suspension; Stygar SS and Clutch Stop; Sound by Polk, Excelon, JLAudio
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#5. "Airbag lite"? - from Craig Perrin
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Date: Sat, 10 Aug 2002 22:07:18 -0400 From: Craig Perrin <cperrin@tampabay.rr.com> Subject: "Airbag lite"? For no obvious reason, my airbag light has started staying lit for about two minutes after startup. This would seem longer than necessary for the test cycle (the light used to go out after a few seconds). Resetting the ECU had no effect. An list archive search turned up a few posts about a constant light but nothing about a two-minute delay. Any theories? I've also heard two conflicting "expert" opinions about my current safety status: 1) the light goes out as a "courtesy" but the airbags won't deploy under any circumstances, and 2) the airbags will deploy when the light is out, but not when it's on. What's the truth? Thanks, Craig Perrin 95 M3
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#6. Re: [E36M3] O2 sensors mixture and performance - from Eric Fesler
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Date: Sat, 10 Aug 2002 23:24:43 -0700 From: "Eric Fesler" <eric@fesler.org> Subject: Re: [E36M3] O2 sensors mixture and performance I wanted to reply to several comments on this as well as clarify my reasons for being interested. First my reasons: I am shark injected (99M3 also w/ ECIS intake and ERT UDP) and SEEM to have poor performance near redline. Replacing the stock programming seems to improve performance near redline but the JC software is much better midband. Interestingly racegas does not improve the near redline performance with the JC software installed. I thought maybe my O2 sensor just tended to run a little lean and a small change might improve things. As to effectiveness: Clearly, all O2 sensors deliver slightly different values at stoich. Also the reference voltage in the DME likely varies by at least 1%. This affects mixture under all driving conditions. During closed loop mode the car runs rich and the LTFT becomes richer so that the car also runs rich WOT. If the car runs fine with a 1% or 2% variation in mixure then why not 3% or even 4%. And if you happen to be running lean by 2% then switching to rich 2% would be a 4% improvement without leaving the normal operating parameters for the vehicle. It seems like either a resistor divide or a resistor divide with a buffer would be adequate to make this modification. Also O2 sensors are analog devices. The switching that you see looks digital but the time at which it switches depends on the analog voltage that the O2 sensor transitions at. Rgds, Eric Fesler
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#7. Re: [E36M3] O2 sensors mixture and performance - from Matt Henson
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Date: Sun, 11 Aug 2002 08:43:10 -0700 (PDT) From: Matt Henson <hensonator@yahoo.com> Subject: Re: [E36M3] O2 sensors mixture and performance Hi, See below.. -Matt --- Eric Fesler <eric@fesler.org> wrote: > > I wanted to reply to several comments on this as > well as > clarify my reasons for being interested. > > First my reasons: > I am shark injected (99M3 also w/ ECIS intake and > ERT UDP) > and SEEM to have poor performance near redline. > Replacing > the stock programming seems to improve performance > near > redline but the JC software is much better midband. > Interestingly racegas does not improve the near > redline > performance with the JC software installed. > > I thought maybe my O2 sensor just tended to run a > little > lean and a small change might improve things. Why do you think that your problem is AFR related? Maybe it's running too rich, not too lean. Maybe it's a plug or a coil. Or maybe it's just the crappy intake manifold on the 96+ M3's. Have you compared it to another OBD-2 M3? > > As to effectiveness: > > Clearly, all O2 sensors deliver slightly different > values at > stoich. Also the reference voltage in the DME > likely varies > by at least 1%. This affects mixture under all > driving > conditions. During closed loop mode the car runs > rich and > the LTFT becomes richer so that the car also runs > rich WOT. > If the car runs fine with a 1% or 2% variation in > mixure > then why not 3% or even 4%. And if you happen to be > running > lean by 2% then switching to rich 2% would be a 4% > improvement without leaving the normal operating > parameters > for the vehicle. Okay, you can probably change the O2 sensor's output by a few %. I'm not sure of how much of a difference it will make. > > It seems like either a resistor divide or a resistor > divide > with a buffer would be adequate to make this > modification. > Also O2 sensors are analog devices. The switching > that you > see looks digital but the time at which it switches > depends > on the analog voltage that the O2 sensor transitions > at. Whatever you do, please use a buffer on the output of the O2 sensor. They have a very high output impedance. So use am OP-AMP with an input inpedance of at least 1Meg. I'm sure that there are some schematics for lean/rich guages online. Use the same front end as they do. Good Luck, Matt > > Rgds, > Eric Fesler > __________________________________________________ Do You Yahoo!? HotJobs - Search Thousands of New Jobs http://www.hotjobs.com
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#8. Re: [E36M3] O2 sensors mixture and performance - from Eric Fesler
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Date: Sun, 11 Aug 2002 09:41:05 -0700 From: "Eric Fesler" <eric@fesler.org> Subject: Re: [E36M3] O2 sensors mixture and performance ----- Original Message ----- From: "Matt Henson" <hensonator@yahoo.com> To: "Eric Fesler" <eric@fesler.org>; "E36M3" <e36m3@bmw-m.net> Sent: Sunday, August 11, 2002 8:43 AM Subject: Re: [E36M3] O2 sensors mixture and performance > Hi, See below.. > -Matt <snip> > Why do you think that your problem is AFR related? > Maybe it's running too rich, not too lean. Maybe it's > a plug or a coil. Or maybe it's just the crappy > intake manifold on the 96+ M3's. Have you compared it > to another OBD-2 M3? > It was comparison to another OBD-2 M3 with SI and intake that made me decide to revert to stock software. However, I am not convinced that it is AFR. This was just what made me consider that some peformance might be gained from a fairly simple mod. As to your suggestion to use a buffer and be careful. I am not sure that I have the courage to do this kind of experimentation on my own car. At this point I am looking at O2 sensor data and MAF readings. It actually seems more likely that the narrower intake tube on my friends, "Jim C" intake acts as an inductor and improves top end performance. Rgds, Eric
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#9. Re: [E36M3] "Airbag lite"? - from LoweSeaton@aol.com
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Date: Mon, 12 Aug 2002 00:53:21 EDT From: LoweSeaton@aol.com Subject: Re: [E36M3] "Airbag lite"? Craig, It sounds like your seat belt sensor is broken. Very common problem on early M3's. I'm surprised it lasted this long. The sensor tells the air bag computer whether or not your seat belt is fastened. The air bag WILL deploy if the light comes on for a few minutes and then goes out. BMW air bag has two deployment criteria. It deploys at a very low speed impact if your seat belt IS NOT fastened. It deploys at a much higher impact speed if you seat belt IS fastened. Why? Because in low impact crashes, all you need is a seat belt. No reason to risk injury and cost by deploying the air bag in a slow speed impact. The BMW default mode is to deploy the air bag in ALL impacts. If the seat belt sensor goes bad, the computer can't tell if the seat belt is fastened so it defaults to the ALL impact mode. Lowell Seaton '95 M3 - one seat belt sensor replaced Dallas, Texas
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#10. FAST Service Lights?? - from twisty M3
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Date: Mon, 12 Aug 2002 08:54:11 -0700 From: "twisty M3" <twistym3@hotmail.com> Subject: FAST Service Lights?? I took my car in, for what I thought was going to be and Insp. 1, on 8/3/02. Based on my records, that's the service that was due, but apparently the DME stated that it was just time for "Oil Service." Got the lights reset, and now they appear to me going out a rather rapid pace. Normally I get an average of 2k+ miles per green light. I had one go out the day after the service and another this past weekend. That's average 150 miles per light. I've always gone in for service with one light still remaining (have yet to allow the orange light to go). Is the DME trying to even things out here, mileage wise, or does it know something I don't? Any ideas? Car is running perfectly fine and no fault codes (aside from loose gas cap) came up last time. Thanks, Jonathan L. _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com