DIY_EFI Digest Saturday, 6 March 1999 Volume 04 : Number 148 In this issue: Re: injector drivers uego Wher to get ZIFs and EPROMs? 90 6cyl bin Re: Wher to get ZIFs and EPROMs? Miss in 87 Subaru RX Re: Miss in 87 Subaru RX See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: Sandy Date: Fri, 05 Mar 1999 17:46:01 -0800 Subject: Re: injector drivers Yes I have a very few left for emergency purposes, if you are in need send me a mail off line. Sandy At 02:10 PM 3/3/99 -0600, you wrote: >Sandy designed a driver board that is useful for injectors or ignition >coils for the efi332 project. There are probably some spares floating >around... It incorporates a 1949 for peak/hold functions but works OK >as a saturated type driver as well. > >--steve > >"Clarence L.Snyder" wrote: >> >> What is the simplest way to drive a set of ford V8 injectors from a >> digital signal ? I want something readily available (not unobtanium >> plated special parts) and inexpensive, that is simple to implement, >> test, and repair if necessary > >-- >Steve Ravet >steve.ravet@xxx.com >Advanced Risc Machines, Inc. >www.arm.com ------------------------------ From: Dynacar@xxx.com Date: Fri, 5 Mar 1999 21:10:01 EST Subject: uego Some time back, a group was working on the honda sourced, NTK sensor electronics. Did it get finished? I would like to swap all the [ info/software/circuit.design LSM11 ] stuff for the NTK/Honda stuff, if it was finalised. The LSM11 stuff is mature and final - tested against Motec and Bosch LA1. Thanks Peter. ------------------------------ From: Tedscj@xxx.com Date: Fri, 5 Mar 1999 21:41:31 EST Subject: Wher to get ZIFs and EPROMs? I just killed two memcals in one day pulling them out and putting them back in and pulling them out .......etc. Where do I get ZIF sockets and EPROMs so I can do this without ruining pins and sockets? Does anyone have any left over after buying in quantity? Would anybody be interested in some if I have to buy a minimum order's worth? Thanks for any direction, Ted ------------------------------ From: "Bruce Plecan" Date: Fri, 5 Mar 1999 23:26:33 -0500 Subject: 90 6cyl bin Some time ago someone was looking for 730 type 6 cylinder bins. well if you need ID #88 (at 0008) I got a couple. Bruce ------------------------------ From: "Bruce Plecan" Date: Fri, 5 Mar 1999 23:43:32 -0500 Subject: Re: Wher to get ZIFs and EPROMs? - -----Original Message----- From: Tedscj@xxx.com> To: DIY_EFI@xxx.edu> Date: Friday, March 05, 1999 9:51 PM Subject: Wher to get ZIFs and EPROMs? I'd try Digi-Key, or Newark get the ZIF with the long leads, and don't worry about getting it under the cover, if you do lots of proms accesss is the word, IMHO For used proms call Sherri at (407) 727-8817 Bruce >I just killed two memcals in one day pulling them out and putting them back in >and pulling them out .......etc. >Where do I get ZIF sockets and EPROMs so I can do this without ruining pins >and sockets? >Does anyone have any left over after buying in quantity? >Would anybody be interested in some if I have to buy a minimum order's worth? > >Thanks for any direction, >Ted > ------------------------------ From: Benjamin Marsh Date: Sat, 6 Mar 1999 16:52:26 +1100 (EST) Subject: Miss in 87 Subaru RX I have an 1987 subaru RX with the mpfi turbo engine. The problem occurs when the engine is at normal operating temperature but not always - driving along at moderate loads and higher the car sometimes misses, backing off doesn't fix the problem and the car eventually rolls to a stop. If I wait until the car cools down sufficiently it goes again just fine - until it heats up. There is also a fair amount of fuel smoke associated with the car stopping which leads me to believe it is an ignition problem. Over the past 6 months this has happened three times. 1st I replaced the O2 sensor - problem went away. 2nd I replaced the O2 sensor - problem went away, until that evening when it happened again - I replaced spark plugs and again problem went away, that was about 6 weeks ago now it has happened again... I have a computer fault code of 33 which corresponds to a speed sensor malfunction, no other fault codes show up the SS fault shows up all the time, when the car misses though the ECS light flashes on and off - the speed sensor is still the only fault code shown. Last time it happened I had a boost gauge in the car which showed that during the miss I was getting full boost at full throttle even though the tach was showing at below 1000rpm this indicates I am still getting fuel into the engine which is going through into the exhaust and spooling the turbo. Does anybody have any idea what could possibly be causing this? BTW my local Subaru dealer has no idea - he says he has less of an idea than I do due to not having seen one of these cars before I brought it to him... Thank you for your help Ben Marsh ------------------------------ From: Scott Schaaf Date: Sat, 06 Mar 1999 01:34:45 -0500 Subject: Re: Miss in 87 Subaru RX I have heard that in some GM trucks, if the speed sensor is disconnected, the fuel mixture will go REAL rich. I don't think that it could go rich enough to kill the car, but then again,,, who knows for SURE! May want to take a good look at the speed sensor! Good Luck, Scott.... Benjamin Marsh wrote: > > I have an 1987 subaru RX with the mpfi turbo engine. > The problem occurs when the engine is at normal operating > temperature but not always - driving along at moderate > loads and higher the car sometimes misses, backing off > doesn't fix the problem and the car eventually rolls to > a stop. If I wait until the car cools down sufficiently > it goes again just fine - until it heats up. There is also > a fair amount of fuel smoke associated with the car stopping > which leads me to believe it is an ignition problem. > > Over the past 6 months this has happened three times. > 1st I replaced the O2 sensor - problem went away. > 2nd I replaced the O2 sensor - problem went away, until > that evening when it happened again - I replaced spark plugs > and again problem went away, that was about 6 weeks ago > now it has happened again... > > I have a computer fault code of 33 which corresponds to > a speed sensor malfunction, no other fault codes show up > the SS fault shows up all the time, when the car misses though > the ECS light flashes on and off - the speed sensor is still the > only fault code shown. Last time it happened I had a boost gauge > in the car which showed that during the miss I was getting full > boost at full throttle even though the tach was showing at below > 1000rpm this indicates I am still getting fuel into the engine > which is going through into the exhaust and spooling the turbo. > > Does anybody have any idea what could possibly be causing this? > > BTW my local Subaru dealer has no idea - he says he has less > of an idea than I do due to not having seen one of these cars > before I brought it to him... > > Thank you for your help > > Ben Marsh ------------------------------ End of DIY_EFI Digest V4 #148 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".