DIY_EFI Digest Tuesday, 19 January 1999 Volume 04 : Number 044 In this issue: Non EFI, but could not resist sharing!!! Mopar PCM help request Re: Volvo FI help request Re: 555 EFI Re: DFI info Re: 24000 ppm VSS? Re: Astro ECM Re: Malfunction Flag Q DIS enhancement Re: DFI info Re: Bin to ECM ID Re: HALP Quadrajet dribbling See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: bearbvd@xxx.net (Greg Hermann) Date: Mon, 18 Jan 1999 21:06:39 -0700 Subject: Non EFI, but could not resist sharing!!! >> At a recent computer expo (COMDEX), Bill Gates reportedly compared >> the >> computer industry with the auto industry and stated: "If GM had kept up >> with >> technology like the computer industry has, we would all be driving >> $25 cars that got 1000 miles to the gallon." >> >> In response to Bill's comments, General Motors issued a press release >> stating: If GM had developed technology like Microsoft, we would all be >> driving cars with the following characteristics: >> >> 1. For no reason whatsoever your car would crash twice a day. >> >> 2. Every time they repainted the lines on the road you would have to buy >> a new car. >> >> 3. Occasionally your car would die on the freeway for no reason, and you >> would just accept this, restart and drive on. >> >> 4. Occasionally, executing a maneuver such as a left turn would cause >> your car to shut down and refuse to restart, in which case you would have >> to reinstall the engine. >> >> 5. Only one person at a time could use the car, unless you bought >> "Car95" or "Car NT" but then you would have to buy more seats. >> >> 6. Macintosh would make a car that was powered by the sun, reliable, >> five times as fast, and twice as easy to drive, but would only run on 5% >> of >> the roads. >> >> 7. The oil, water temperature and alternator warning lights would be >> replaced by a single "general car fault" warning light. >> >> 8. New seats would force everyone to have the same size butt. >> >> 9. The air bag system would say, "Are you sure?" before going off. >> >> 10. Occasionally for no reason whatsoever, your car would lock you out >> and refuse to let you in until you simultaneously lift the door handle, >> turn the key, and grab hold of the radio antenna. >> >> 11. GM would require all car buyers to also purchase a deluxe set of >> Rand McNally Road maps (now a GM subsidiary), even though they neither >> need them or want them. Attempting to delete this option would >> immediately cause the car's performance to diminish by 50% or more. >> Moreover, GM would become a target for investigation by the Justice >> Department. >> >> 12. Every time GM introduced a new model car buyers would have to learn >> how >> to drive all over again because none of the controls would operate in the >> same >> manner as the old car. >> >> 13. You'd press the "start" button to shut off the engine. ------------------------------ From: Bob Tom Date: Mon, 18 Jan 1999 23:05:59 Subject: Mopar PCM help request Hi, everybody. I have a 1997 Dakota, 5.2L, auto. and, because Mopar Performance does not have a performance computer out for the 97+ Daks, I did as much research as I could and decided to gamble on the MP performance computer for the '96 Dak. Both are OBDII and, except for the major design and minor suspension changes, everything seemed the same. I received the computer last week and tested it today. The performance function seems to work fine but the gauges (water temp., oil pressure, tach., battery, etc.) do not work at all. My knowledge in this area is fairly elementary. I have the '97 service manual and am going over the wiring diagrams looking for possible fixes. Any ideas or resources that I can look at would be greatly welcomed and appreciated. Bob Burlington, Ont. ------------------------------ From: JCsDOOR@xxx.com Date: Mon, 18 Jan 1999 23:12:53 EST Subject: Re: Volvo FI help request Ron, have you checked the wiring to the distr. there are two metal clamps that hold the wires about 4 to 6 in. from the dist. they have the habit of cutting the wires at this point. you didn't say if it was LH or CIS. if you have CIS check the warm up reg. if you have LH you can un plug air meter and will still run fair, if it quits smoking then air meter is bad.. it has been a few year sense volvos. now i only have to work on saabs. write me off line and i can get you through it.. Jim Crance JCsDOOR @xxx.com ------------------------------ From: "Bruce Plecan" Date: Mon, 18 Jan 1999 23:42:45 -0500 Subject: Re: 555 EFI - -----Original Message----- From: Clarence L.Snyder To: diy_efi@xxx.edu> Date: Monday, January 18, 1999 9:10 PM Subject: Re: 555 EFI If this pans out would you toss a copy toward nacelp@xxx.net Thanks Bruce >> > >> > Harold >I'm intersted, and I have a scanner if you want to fax it to me drop me >a line off list and I'll give you my fax line #. > ------------------------------ From: "Bruce Plecan" Date: Tue, 19 Jan 1999 00:35:04 -0500 Subject: Re: DFI info - -----Original Message----- From: Charles Brooks To: diy_efi@xxx.edu> Date: Monday, January 18, 1999 5:22 PM Subject: Re: DFI info I got my data by reading the archives here. Bruce >Well, mostly because that's what was recommended to me. Can you point >me toward some literature that compares the two? I'd like to see an >unbiased comparison but I've been unable to dig one up. I assumed >(Along with the advice I was given) that going sequential reduced >fuel consumption and emissions while improving idle quality and >performance all by a good margin. Is this wrong, or exagerated? > >Charles Brooks > > > >Bruce Plecan wrote: >> >> -----Original Message----- >> From: Charles Brooks >> To: diy_efi@xxx.edu> >> Date: Monday, January 18, 1999 10:23 AM >> Subject: Re: DFI info >> >> Why SEFI?. From what I've read other than a slight improvement in idle, >> light cruise emissions there doesn't seem to be any real gains with it. >> Bruce >> > ------------------------------ From: Shannen Durphey Date: Tue, 19 Jan 1999 01:29:23 -0500 Subject: Re: 24000 ppm VSS? >From memory, 88 was right around the time that the speedometer cables were dissappearing from the GM midsize cars. This calibration fits an 88-89 AB body (Cutlass Cierra, Chevy Celebrity & similar) with 2.5l and 3spd auto trans. Quite possibly, it's from a car with a digital dash and electronic cruise control. It's superceded due to multiple driveability problems. Shannen diy_efi@xxx.edu wrote: > > I've come across a PROM which appears to expect a 24000 pulse-per-mile > VSS. Its the ANAM1667 used in the 1227748 ECM. This PROM configures a > VSS interface chip to perform an extra "divide-by-6". Other PROMs for > this ECM set it to "divide-by-1" mode. The ANAM PROM also has an extra > factor of six in the VSS to vehicle speed calculation code (which gets > the VSS signal before the hardware divide). > > Could this PROM be for a reluctor type VSS? I should have kept track of > what type of car it came out of. > > -- > Ludis Langens ludis (at) cruzers (dot) com > Mac, Fiero, & engine controller goodies: http://www.cruzers.com/~ludis/ ------------------------------ From: Shannen Durphey Date: Tue, 19 Jan 1999 01:29:52 -0500 Subject: Re: Astro ECM diy_efi@xxx.edu wrote: > > > > >See this, new info. OK, how about these 'templates', have any > >info on the calibration layouts? Anyplace I can go for info? > > Programming 101 is just about the 747, and basic prom stuff. > >> > >>Ward > > > >BobR. Who now has pencil and paper in his junkyard > > scouring toolbag. > > > It's serious when ya have a staff 0f 7 tag along, and carry your > own prom book, and Hollander manual. > Bruce Ya, but ya gotta smuggle the "research dept" in, else ya look too proffessional and the prices go up. Shannen ------------------------------ From: Shannen Durphey Date: Tue, 19 Jan 1999 01:30:12 -0500 Subject: Re: Malfunction Flag Q DIS enhancement If you're not too picky, this would probably be a good situation for one of the carb'ed ECMs that's kicking around. These were less likely to go into limp-home, in my experience. Plus, there were fewer outputs and fewer monitored circuits! Downside is you've got to find the location for the timing map. Shannen diy_efi@xxx.edu wrote: > > If someone wanted to use an ecm as a just a timing control > for a DIS, would just wiring up the ignition module, and > disabling all the malfunction flags allow the ecm to do that, > with out it being in limp home mode?.. > Of course the power, and grounds for the ecm would be > hooked up. > Would using resistors of fixed values be necessary for > like TPS/MAP?.. or best to use them for CTS/IAT etc.?. > Cheers > Bruce > ------------------------------ From: "Ronald T. Webb" Date: Mon, 18 Jan 1999 21:36:19 -0900 Subject: Re: DFI info My son just bought a '93 Grand Am with a 3.1l V6 and batch fire efi. I then got a 94 chev corsica with the same engine but sefi. HP claimed is the same, they both idle smooth, and he beats me in the "from here to the corner" 1/4 mile. Doesn't look to me like there is any gain to the extra complexity... Bruce Plecan wrote: > -----Original Message----- > From: Charles Brooks > To: diy_efi@xxx.edu> > Date: Monday, January 18, 1999 5:22 PM > Subject: Re: DFI info > > I got my data by reading the archives here. > Bruce > > >Well, mostly because that's what was recommended to me. Can you point > >me toward some literature that compares the two? I'd like to see an > >unbiased comparison but I've been unable to dig one up. I assumed > >(Along with the advice I was given) that going sequential reduced > >fuel consumption and emissions while improving idle quality and > >performance all by a good margin. Is this wrong, or exagerated? > > > >Charles Brooks > > > > > > > >Bruce Plecan wrote: > >> > >> -----Original Message----- > >> From: Charles Brooks > >> To: diy_efi@xxx.edu> > >> Date: Monday, January 18, 1999 10:23 AM > >> Subject: Re: DFI info > >> > >> Why SEFI?. From what I've read other than a slight improvement in idle, > >> light cruise emissions there doesn't seem to be any real gains with it. > >> Bruce > >> > > ------------------------------ From: Shannen Durphey Date: Tue, 19 Jan 1999 01:41:00 -0500 Subject: Re: Bin to ECM ID Hmmm... Found BHDF/4632 for '94 7.4l VIN code N and 16196395. Fits 3/4 and 1 ton pickups and vans, with 4l80E trans, and heavy GVW rating Note at the bottom says the '6395 PCM is replaced by the 16197427 PCM. HTH Shannen diy_efi@xxx.edu wrote: > > A BHDF is used in a 95 "N" truck, anyone able to match this > to the ecm?. ie 95 "N" truck used two ecms > Bruce ------------------------------ From: "Peter Fenske" Date: Tue, 19 Jan 1999 00:33:22 -0800 Subject: Re: HALP Quadrajet dribbling Howday all Hope you don't mind a excursion into history Relative has a quadrajet equiped car which must pass smog To get the cat to light CO must stay below 1% We can get this adjustment but dribbling from the primary venturi booster sets in.. randomly. One minute the CO is 0 % cat on and next minute is 5% cat drowned not lit. Does anyone remember how to cure venturi dribbling I managed to do this once by increasing the idle feed restrictions but smog won't allow me to do this.. Any ideas please TIA:peter ------------------------------ End of DIY_EFI Digest V4 #44 **************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. 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