The BMW UUC Digest Volume 3 : Issue 594 : "text" Format Messages in this Issue: Cheap M3 wheel Re: RPMs Holding on 97 540i Re: RPMs Holding on 97 540i
---------------------------------------------------------------------- Date: Sun, 14 Oct 2007 15:36:14 -0500 From: "Bill Proud" <[EMAIL PROTECTED]> To: "Uucdigest" <[email protected]> Subject: Cheap M3 wheel Message-ID: <[EMAIL PROTECTED]> NOT mine , no affiliation etc . Cheap for a factory 18" rear wheel ...rare to see just one for sale http://atlanta.craigslist.org/pts/447584620.html Bill Proud ------------------------------ Date: Sun, 14 Oct 2007 23:09:02 -0400 From: "Gary Derian" <[EMAIL PROTECTED]> To: "Tom Viers" <[EMAIL PROTECTED]>, <[email protected]> Subject: Re: RPMs Holding on 97 540i Message-ID: <[EMAIL PROTECTED]> Are there switch contacts on the TPS or only the variable resistor? The TPS performs as a voltage divider. It is better to measure the actual voltage out rather than the resistance, but it sounds like your's is OK. Engine sensors nearly all use 5 volt reference signal. I'd expect the output to vary between some fraction of a volt, and close to 5 volts as the throttle is moved. Gary Derian > Darn, I have to issue a retraction. I messed up, I thought I was looking > for 4 ohms but I should have been looking for 4000 ohms. Missed the > little 'k', my reading glasses were inside. > > So, I got 5k ohms across Term. 1 and 3. I got 1.6k ohms at closed > throttle, continuously variable to 5.5k ohms at WOT. Voltage at the > Harness between terminal 1 and ground was 12 vdc. It was hard to figure > which was terminal 1 from the Bentley picture, so I assumed 1 was where I > got the ohms going up from closed throttle to WOT, does that sound right? > Bentley says it should be 5 vdc. > > Based on the above, I don't think I have a bad TPS. Any other ideas or do > you think i did something wrong in the procedure I above? > > Thanks, > > Tom > > > Tom > > ---- Tom Viers <[EMAIL PROTECTED]> wrote: >> Thanks Gary! I went through the tests for the TPS in my Bentley: Voltage >> at the harness connector is approx 7 vdc, but no ohms reading across the >> terminals on the sensor, so I'm pretty sure it's bad. >> >> Sometimes these things happen for the good. While I was in there >> cleaning my MAF and checking linkage, etc. I noticed my Air Filter was >> dirty on the wrong side! The guy I bought the car from (about 3,000 >> miles ago) had reinstalled the stock intake and kept the Dinan CAI. He >> forgot to install the Air Temp Sensor in the air box which is downstream >> from the filter, so I was sucking air around the filter, which sucks! >> >> During this process I also noticed someone has removed the Resonator from >> the Air intake Boot and pluged the hole. Does anyone know what effect >> this would have? Should I replace it? >> >> Thanks!! >> >> Tom >> >> ---- Gary Derian <[EMAIL PROTECTED]> wrote: >> > Check the throttle position switch. If then DME doesn't know the >> > throttle >> > is closed, the idle valve stays open. >> > Gary Derian >> > >> > > My rpm's hold between shifts. I've checked the throttle linkage and >> > > floor >> > > mats against the accel. pedal, etc. I also sprayed brake cleaner >> > > around >> > > the vacuum hoses to eliminate the possibility of a vacuum leak. I >> > > removed >> > > and cleaned the Idle Control Valve and the door moves freely now, but >> > > no >> > > change in the rpms holding. I disconnected the electrical from the >> > > ICV and >> > > the problem goes away. Plug it back in and it reappears. I hate to >> > > replace >> > > the ICV if it's not the problem as they are about $350. Any >> > > suggestions? >> > > >> > > Thanks, >> > > >> > > Tom >> > >> > Search the >> > ARCHIVES:http://www.mail-archive.com/[email protected] >> > >> > >> > __________________________________________________________________________ >> > In memory of Michel Potheau - friend, enthusiast, founder of the BMW >> > CCA. >> > >> > UUC Motorwerks - BMW Performance Fine-tuning and home of the Ultimate >> > Short Shifter - accept no substitutes! >> > 908-874-9092 . http://www.uucmotorwerks.com >> >> Search the >> ARCHIVES:http://www.mail-archive.com/[email protected] >> >> >> __________________________________________________________________________ >> In memory of Michel Potheau - friend, enthusiast, founder of the BMW CCA. >> >> UUC Motorwerks - BMW Performance Fine-tuning and home of the Ultimate >> Short Shifter - accept no substitutes! >> 908-874-9092 . http://www.uucmotorwerks.com > > Search the ARCHIVES:http://www.mail-archive.com/[email protected] > > > __________________________________________________________________________ > In memory of Michel Potheau - friend, enthusiast, founder of the BMW CCA. > > UUC Motorwerks - BMW Performance Fine-tuning and home of the Ultimate > Short Shifter - accept no substitutes! > 908-874-9092 . http://www.uucmotorwerks.com ------------------------------ Date: Sun, 14 Oct 2007 20:35:59 -0700 From: Tom Viers <[EMAIL PROTECTED]> To: Gary Derian <[EMAIL PROTECTED]>, [email protected] Subject: Re: RPMs Holding on 97 540i Message-ID: <[EMAIL PROTECTED]> If I understand what you're asking, there are only the 3 contacts where the harness plugs into the TPS. I don't remember seeing any other contacts, but I'll look again tomorrow. It sounds like I'm back to the ICV as the source. I just hate to send off for a $390 part that may not me the problem. Thanks for the input on the resonator. Tom ---- Gary Derian <[EMAIL PROTECTED]> wrote: > Are there switch contacts on the TPS or only the variable resistor? The TPS > performs as a voltage divider. It is better to measure the actual voltage > out rather than the resistance, but it sounds like your's is OK. Engine > sensors nearly all use 5 volt reference signal. I'd expect the output to > vary between some fraction of a volt, and close to 5 volts as the throttle > is moved. > > Gary Derian > > > Darn, I have to issue a retraction. I messed up, I thought I was looking > > for 4 ohms but I should have been looking for 4000 ohms. Missed the > > little 'k', my reading glasses were inside. > > > > So, I got 5k ohms across Term. 1 and 3. I got 1.6k ohms at closed > > throttle, continuously variable to 5.5k ohms at WOT. Voltage at the > > Harness between terminal 1 and ground was 12 vdc. It was hard to figure > > which was terminal 1 from the Bentley picture, so I assumed 1 was where I > > got the ohms going up from closed throttle to WOT, does that sound right? > > Bentley says it should be 5 vdc. > > > > Based on the above, I don't think I have a bad TPS. Any other ideas or do > > you think i did something wrong in the procedure I above? > > > > Thanks, > > > > Tom > > > > > > Tom > > > > ---- Tom Viers <[EMAIL PROTECTED]> wrote: > >> Thanks Gary! I went through the tests for the TPS in my Bentley: Voltage > >> at the harness connector is approx 7 vdc, but no ohms reading across the > >> terminals on the sensor, so I'm pretty sure it's bad. > >> > >> Sometimes these things happen for the good. While I was in there > >> cleaning my MAF and checking linkage, etc. I noticed my Air Filter was > >> dirty on the wrong side! The guy I bought the car from (about 3,000 > >> miles ago) had reinstalled the stock intake and kept the Dinan CAI. He > >> forgot to install the Air Temp Sensor in the air box which is downstream > >> from the filter, so I was sucking air around the filter, which sucks! > >> > >> During this process I also noticed someone has removed the Resonator from > >> the Air intake Boot and pluged the hole. Does anyone know what effect > >> this would have? Should I replace it? > >> > >> Thanks!! > >> > >> Tom > >> > >> ---- Gary Derian <[EMAIL PROTECTED]> wrote: > >> > Check the throttle position switch. If then DME doesn't know the > >> > throttle > >> > is closed, the idle valve stays open. > >> > Gary Derian > >> > > >> > > My rpm's hold between shifts. I've checked the throttle linkage and > >> > > floor > >> > > mats against the accel. pedal, etc. I also sprayed brake cleaner > >> > > around > >> > > the vacuum hoses to eliminate the possibility of a vacuum leak. I > >> > > removed > >> > > and cleaned the Idle Control Valve and the door moves freely now, but > >> > > no > >> > > change in the rpms holding. I disconnected the electrical from the > >> > > ICV and > >> > > the problem goes away. Plug it back in and it reappears. I hate to > >> > > replace > >> > > the ICV if it's not the problem as they are about $350. Any > >> > > suggestions? > >> > > > >> > > Thanks, > >> > > > >> > > Tom > >> > > >> > Search the > >> > ARCHIVES:http://www.mail-archive.com/[email protected] > >> > > >> > > >> > __________________________________________________________________________ > >> > In memory of Michel Potheau - friend, enthusiast, founder of the BMW > >> > CCA. > >> > > >> > UUC Motorwerks - BMW Performance Fine-tuning and home of the Ultimate > >> > Short Shifter - accept no substitutes! > >> > 908-874-9092 . http://www.uucmotorwerks.com > >> > >> Search the > >> ARCHIVES:http://www.mail-archive.com/[email protected] > >> > >> > >> __________________________________________________________________________ > >> In memory of Michel Potheau - friend, enthusiast, founder of the BMW CCA. > >> > >> UUC Motorwerks - BMW Performance Fine-tuning and home of the Ultimate > >> Short Shifter - accept no substitutes! > >> 908-874-9092 . http://www.uucmotorwerks.com > > > > Search the ARCHIVES:http://www.mail-archive.com/[email protected] > > > > > > __________________________________________________________________________ > > In memory of Michel Potheau - friend, enthusiast, founder of the BMW CCA. > > > > UUC Motorwerks - BMW Performance Fine-tuning and home of the Ultimate > > Short Shifter - accept no substitutes! > > 908-874-9092 . http://www.uucmotorwerks.com > > Search the ARCHIVES:http://www.mail-archive.com/[email protected] > > > __________________________________________________________________________ > In memory of Michel Potheau - friend, enthusiast, founder of the BMW CCA. > > UUC Motorwerks - BMW Performance Fine-tuning and home of the Ultimate > Short Shifter - accept no substitutes! > 908-874-9092 . http://www.uucmotorwerks.com ------------------------------ End of [bmwuucdigest] digest(3 messages) **********
