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]>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]> > To: Mark Phillips <[email protected]> > Cc: miatapower <[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]>wrote: > >> I am off to the Shack. >> >> Eric >> >> >> On Fri, Jul 13, 2012 at 10:39 AM, Mark Phillips < >> [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]> 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]> 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]> 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] >>>>>> *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]> 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] >>>>>>> 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 >>>>> >>>>> >>>> >>>> >>>> >>> >>> >>> >> > _______________________________________________ > Miatapower mailing > [email protected]http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > >
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