I had something similar, but different symptoms. I had NO fuel pump. Luckily I have a friend who let me swap Link parts from his car. It was all good. We verified that my car wouldn't start with his parts, and his car ran fine with my parts. It turned out to be a loose connector on the car side of the harness going into the Link. After finding this with an ohmmeter (with much help and advice from Bill, Ray, and Ken, on where to look--Thanks again!) and fixing it, all was well. I was REALLY happy to hear that hmmmmm in the back! Sam
On Fri, Jul 13, 2012 at 12:39 PM, Eric McCord <[email protected]>wrote: > 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 >> >> > > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > >
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