The BMW UUC Digest Volume 3 : Issue 593 : "text" Format Messages in this Issue: RPMs Holding on 97 540i Re: RPMs Holding on 97 540i Re: RPMs Holding on 97 540i Re: RPMs Holding on 97 540i Thunderhill Track Event 10/20-10/21
---------------------------------------------------------------------- Date: Sat, 13 Oct 2007 9:54:31 -0700 From: Tom Viers <[EMAIL PROTECTED]> To: bmwuucdigest@uucdigest.com Subject: RPMs Holding on 97 540i Message-ID: <[EMAIL PROTECTED]> 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 ------------------------------ Date: Sat, 13 Oct 2007 18:25:05 -0400 From: "Gary Derian" <[EMAIL PROTECTED]> To: "Tom Viers" <[EMAIL PROTECTED]>, <bmwuucdigest@uucdigest.com> Subject: Re: RPMs Holding on 97 540i Message-ID: <[EMAIL PROTECTED]> 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 ------------------------------ Date: Sun, 14 Oct 2007 11:47:59 -0400 From: Tom Viers <[EMAIL PROTECTED]> To: Gary Derian <[EMAIL PROTECTED]>, bmwuucdigest@uucdigest.com Subject: Re: RPMs Holding on 97 540i Message-ID: <[EMAIL PROTECTED]> 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/bmwuucdigest@uucdigest.com > > > __________________________________________________________________________ > 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 9:08:50 -0700 From: Tom Viers <[EMAIL PROTECTED]> To: Gary Derian <[EMAIL PROTECTED]>, Tom Viers <[EMAIL PROTECTED]>, bmwuucdigest@uucdigest.com Subject: Re: RPMs Holding on 97 540i Message-ID: <[EMAIL PROTECTED]> 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/bmwuucdigest@uucdigest.com > > > > > > __________________________________________________________________________ > > 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/bmwuucdigest@uucdigest.com > > > __________________________________________________________________________ > 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: Sat, 13 Oct 2007 11:53:44 -0700 From: [EMAIL PROTECTED] To: UUC Digest <bmwuucdigest@uucdigest.com> Subject: Thunderhill Track Event 10/20-10/21 Message-ID: <[EMAIL PROTECTED]> If anyone is interested in another open track event, a club I track with has some openings in an event at Thunderhill (Northern Cal) later this month. It's the NorCal Shelby Club & they're a good group of car nuts to run with. Sure there will be lots of Fords & Cobras, but also many other makes usually show up like Corvette, Porsche, BMW, Mini, Lotus, Miata etc. There are only 3 run groups, so there should be lots of track time. Check out the link below for more info: http://www.norcal-saac.org/news/0710th.htm Unfortunately I won't be driving my E36 as it needs a head gasketectomy, but I'll be in my Mini Cooper S if anyone goes & wants to say hi. -- Roger ------------------------------ End of [bmwuucdigest] digest(5 messages) **********
