Yes, I swapped with my daughters 92. Her's has my old relay and it runs fine.
Eric On Sat, Jul 14, 2012 at 6:40 PM, [email protected] <[email protected]>wrote: > I must have missed something somewhere; I thought you were certain that > you had fuel delivery. > So, if the fuel pump runs and the engine fires when you spray carb cleaner > into the intake, the injectors are not firing. > Did you try replacing the injector fuse/relay? > > LGO > > > -----Original Message----- > From: Eric McCord <[email protected]> > To: Bill Cardell <[email protected]> > Cc: miatapower <[email protected]> > Sent: Sat, Jul 14, 2012 6:08 pm > Subject: Re: '91 fires, won't stay on... > > yes > > On Sat, Jul 14, 2012 at 6:01 PM, Bill Cardell <[email protected]> wrote: > >> Do you have. 12 volt to the white/red wires going to the injectors? >> >> Bill Cardell >> Owner, Flyin' Miata >> Www.flyinmiata.com <http://www.flyinmiata.com/> >> 1-800-FLY-MX5s >> 970-464-5600 >> >> >> On Jul 14, 2012, at 3:40 PM, "Eric McCord" <[email protected]> >> wrote: >> >> Latest update. If I spray carb cleaner into the intake tract it runs. >> I also tried ANOTHER CAS. It dies when the spray is stopped. >> >> Eric >> >> On Sat, Jul 14, 2012 at 5:00 PM, Eric McCord < <[email protected]> >> [email protected]> wrote: >> >>> I have both, but the Data Link Lab expired. I used it for another issue >>> and then didn't purchase. I have since purchased it but have not received >>> my key code yet. >>> >>> RPM changes on the keypad as well as INJ. I have +12 and ground at the >>> MAP box with the key on. >>> >>> I have also tried it with the F/P to GND in the Diagnostic connector >>> which keeps the pump on and I get the same symptoms. >>> >>> I just swapped out the connector at the CAS because one of the wires >>> looked iffy, but no change. >>> >>> Eric >>> >>> On Fri, Jul 13, 2012 at 8:20 PM, Ray < <[email protected]> >>> [email protected]> wrote: >>> >>>> Do you have a keypad or datalogger? If so, do all of the sensor >>>> readings look normal at key-on before cranking? Do RPM and MAP values >>>> change as expected and do the injector pulse width & ign advance look >>>> normal during the brief run that you do get? Do you have gnd and +12v >>>> power at the MAP box when the key is on? >>>> >>>> Since the engine fires briefly but doesn’t continue to run even with >>>> the fuel pump jumpered to stay on, I’d guess that the plugs are firing, and >>>> the initial start is fueled by prime fuel but the ECU thinks that there is >>>> high manifold vacuum or high coolant temp and isn’t supplying enough fuel >>>> to continue running ... or maybe the fuel map in the ECU got hosed >>>> somehow. The FP shutting off when the starter isn’t running says that >>>> something is wrong with the MAP box or connections to it. Normally the ECU >>>> turns that transistor on in the map box to keep the FP relay energized as >>>> soon as it senses RPM > 60. >>>> *From:* Eric McCord <[email protected]> >>>> *Sent:* Friday, July 13, 2012 11:39 AM >>>> *To:* <[email protected]>[email protected] >>>> *Cc:* <[email protected]>[email protected] >>>> *Subject:* Re: '91 fires, won't stay on... >>>> >>>> Swapped out both the ignition switch and CAS. No change. I have only >>>> used the Link. I also swapped out the fuel pump before purchasing a fuel >>>> pressure guage. I am getting 40 psi at the rail at all times with the key >>>> on. It is not looking like it is fuel related. >>>> >>>> Eric >>>> >>>> On Fri, Jul 13, 2012 at 2:35 PM, <[email protected]> >>>> [email protected] < <[email protected]>[email protected]> wrote: >>>> >>>>> A long shot here, but it may be that the ignition switch is faulty, >>>>> allowing to to start the car and then losing electrical contact, or >>>>> perhaps >>>>> the current from the ignition to the CAS has been interrupted. WAIT! You >>>>> are using the Link now, but did you EVER use another method of engine >>>>> management? Did you use an MSD? I recall long ago having a problem >>>>> develop after I upgraded from the Bell Sys II to full FM II spec with >>>>> link, >>>>> and it turned out that old wiring for the MSD unit had developed a short >>>>> (or some problem... was years ago!) >>>>> >>>>> LGO >>>>> >>>>> >>>>> >>>>> -----Original Message----- >>>>> From: Eric McCord < <[email protected]>[email protected]> >>>>> To: Mark Phillips < <[email protected]> >>>>> [email protected]> >>>>> Cc: miatapower < <[email protected]>[email protected]> >>>>> Sent: Fri, Jul 13, 2012 11:54 am >>>>> Subject: Re: '91 fires, won't stay on... >>>>> >>>>> No luck. I just replaced that transistor and it is still doing the >>>>> same thing. >>>>> >>>>> Eric >>>>> >>>>> On Fri, Jul 13, 2012 at 10:41 AM, Eric McCord <<[email protected]> >>>>> [email protected]> wrote: >>>>> >>>>>> I am off to the Shack. >>>>>> >>>>>> Eric >>>>>> >>>>>> >>>>>> On Fri, Jul 13, 2012 at 10:39 AM, Mark Phillips >>>>>> <<[email protected]> >>>>>> [email protected]> wrote: >>>>>> >>>>>>> Yes. >>>>>>> >>>>>>> >>>>>>> On 07/13/2012 10:28 AM, Eric McCord wrote: >>>>>>> >>>>>>> on yours it was T2? Did you just replace the transistor to get it >>>>>>> back up and running? >>>>>>> >>>>>>> Eric >>>>>>> >>>>>>> On Fri, Jul 13, 2012 at 10:25 AM, Mark Phillips >>>>>>> <<[email protected]> >>>>>>> [email protected]> wrote: >>>>>>> >>>>>>>> The relay has 12 volts applied to one side of the coil with the >>>>>>>> ignition on. When you jump F/P to GND you are taking the other side of >>>>>>>> the >>>>>>>> relay coil straight to ground bypassing the transistor. Normally the >>>>>>>> transistor performs this grounding function (sinking current). T2 also >>>>>>>> interacts with other circuity in the MAF box. >>>>>>>> >>>>>>>> This happened to me about 4-5 years ago on my '92. >>>>>>>> >>>>>>>> Mark >>>>>>>> >>>>>>>> >>>>>>>> On 07/13/2012 10:00 AM, Eric McCord wrote: >>>>>>>> >>>>>>>> When I jump out the F/P to GND the pump stays on but I still have >>>>>>>> the same symptoms. If that transistor drives the relay but I jump it >>>>>>>> out >>>>>>>> should that not run? >>>>>>>> >>>>>>>> Eric >>>>>>>> >>>>>>>> On Fri, Jul 13, 2012 at 9:54 AM, Mark Phillips >>>>>>>> <<[email protected]> >>>>>>>> [email protected]> wrote: >>>>>>>> >>>>>>>>> Hi Eric, >>>>>>>>> >>>>>>>>> I sent this out earlier but didn't see it repost. I apologize if >>>>>>>>> its a repeat. >>>>>>>>> >>>>>>>>> There is a transistor in the Link box that replaces the AFM; it >>>>>>>>> drives the fuel pump relay. It is an NPN transistor, is marked "T2" >>>>>>>>> and may >>>>>>>>> have failed. About $1.50 and a soldering iron to replace. >>>>>>>>> >>>>>>>>> Mark Phillips >>>>>>>>> >>>>>>>>> >>>>>>>>> On 07/13/2012 09:40 AM, Eric McCord wrote: >>>>>>>>> >>>>>>>>> I just swapped out the CAS and same symptoms. If it's a bad MAF >>>>>>>>> box where can I get one of those? Since my Baja went down the Miata >>>>>>>>> has >>>>>>>>> been my only transportation and Kaitlyn and I are leaving in a week >>>>>>>>> and a >>>>>>>>> half for the dragon and our road trip. >>>>>>>>> >>>>>>>>> Eric >>>>>>>>> >>>>>>>>> On Fri, Jul 13, 2012 at 9:18 AM, Ray < <[email protected]> >>>>>>>>> [email protected]> wrote: >>>>>>>>> >>>>>>>>>> Can also be that one of the two signals from the CAS is not >>>>>>>>>> there. >>>>>>>>>> >>>>>>>>>> *From:* Eric McCord <[email protected]> >>>>>>>>>> *Sent:* Thursday, July 12, 2012 6:21 PM >>>>>>>>>> *To:* <[email protected]>[email protected] >>>>>>>>>> *Cc:* <[email protected]>[email protected] >>>>>>>>>> *Subject:* Re: '91 fires, won't stay on... >>>>>>>>>> >>>>>>>>>> Just checked that connector. It looked fine, I reseated it and >>>>>>>>>> still have the same symptoms. >>>>>>>>>> >>>>>>>>>> Eric >>>>>>>>>> >>>>>>>>>> On Thu, Jul 12, 2012 at 9:07 PM, <[email protected]> >>>>>>>>>> [email protected] < <[email protected]>[email protected]>wrote: >>>>>>>>>> >>>>>>>>>>> Have you checked the manifold pressure connection (heck! I think >>>>>>>>>>> that's what its called - I can't remember!) ? If it comes loose, >>>>>>>>>>> it may >>>>>>>>>>> begin to fire and then die. On mine its the small box with the >>>>>>>>>>> AFM-like >>>>>>>>>>> connector (multi-pin) on the driver's side. >>>>>>>>>>> >>>>>>>>>>> LGO >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> _______________________________________________ >>>>>>>>>>> Miatapower mailing list >>>>>>>>>>> <[email protected]>[email protected] >>>>>>>>>>> <http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower> >>>>>>>>>>> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> ------------------------------ >>>>>>>>>> _______________________________________________ >>>>>>>>>> Miatapower mailing list >>>>>>>>>> <[email protected]>[email protected] >>>>>>>>>> <http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower> >>>>>>>>>> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Miatapower mailing list >>>>>>>>> <[email protected]>[email protected] >>>>>>>>> <http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower>http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Miatapower mailing list >>>>>>>>> <[email protected]>[email protected] >>>>>>>>> <http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower> >>>>>>>>> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Miatapower mailing list >>>>> <[email protected]>[email protected] >>>>> <http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower>http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >>>>> >>>>> >>>> ------------------------------ >>>> _______________________________________________ >>>> Miatapower mailing list >>>> <[email protected]>[email protected] >>>> <http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower> >>>> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >>>> >>> >>> >> _______________________________________________ >> Miatapower mailing list >> [email protected] >> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >> >> > _______________________________________________ > Miatapower mailing > [email protected]http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > >
_______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
