Well I came up with a good idea. The Mazda diagnostic port has the same Serial Data Line that goes to the OBD2 port. So I just made up some pins and plugged the OBD2 port in to the diagnostic port. So now I have a Bluetooth OBD2 interface velcro'ed to the top of the fuse box. So tomorrow morning I will try and re-create the heat soak issue and get some logs.
Graham On Fri, Jun 24, 2011 at 3:16 PM, fast G <[email protected]> wrote: > Well I got an OBD2 port, of a VW but they should be universal and I can > swap the pins around. Can anyone point me to a wiring diagram that will show > me how to re-attach it. All I have been able to find is this > http://forum.miata.net/vb/attachment.php?attachmentid=71291&d=1222266155 but > I am not sure it's correct. The donor car is supposed to be a 2002. > > Getting closer > > Graham > > > On Mon, Jun 20, 2011 at 1:30 PM, Bill Cardell <[email protected]> wrote: > >> ** >> PS The port is universal in all cars since 96, though some have >> additional pins. IOW, doesn't have to be a Miata. >> >> >> Bill Cardell >> TurboDog's Dad >> >> Flyin' Miata <http://www.flyinmiata.com/> >> >> HELP FLYIN' MIATA GO TO TARGA NEWFOUNDLAND! >> <http://www.flyinmiata.com/projects/targa/index.php> >> Targa Miata Facebook >> page<http://www.facebook.com/pages/Flyin-Miatas-at-Targa-Newfoundland/144488045605566> >> >> FMWestfield <http://www.fmwestfield.com/> >> >> Sales 1-800-359-6957 >> Tech 970-464-5600 Before you call, check out >> http://www.flyinmiata.com/FAQ/ >> >> >> ------------------------------ >> *From:* fast G [mailto:[email protected]] >> *Sent:* Sunday, June 19, 2011 12:51 PM >> >> *To:* Bill Cardell >> *Subject:* Re: Diagnostic help needed >> >> Can your salvage department help with the OBD2 port? If so I will email >> them tonight. I just need the port and with as much wire as I can get. >> >> I will check the fuel pressure tomorrow, >> >> Thanks >> >> G >> >> On Sun, Jun 19, 2011 at 1:40 PM, Bill Cardell <[email protected]>wrote: >> >>> ** >>> Is there a fuel pressure regulator somewhere under the hood? 2001 had the >>> reg inside the tank and no return, IIRC. Doesn't matter too much, as long as >>> the fuel pressure is set to 59 psi. The presence of a return line makes me >>> wonder if the system is backdated with a stock older fpr on the fuel rail. >>> If so, pressure on old cars was only 39 psi, so car would be very lean. >>> >>> >>> Bill Cardell >>> TurboDog's Dad >>> Flyin' Miata >>> 1-800-359-6967 (sales) >>> 970-464-5600 (tech support) >>> www.flyinmiata.com >>> www.fmwestfield.com >>> >>> >>> ------------------------------ >>> *From:* fast G [mailto:[email protected]] >>> *Sent:* Sunday, June 19, 2011 12:06 PM >>> >>> *To:* Bill Cardell >>> *Subject:* Re: Diagnostic help needed >>> >>> It looks like I have a return line, here is a picture of the tank >>> setup >>> >>> http://i562.photobucket.com/albums/ss63/fastgxc/2011-06-19125816.jpg >>> >>> >>> >>> On Sun, Jun 19, 2011 at 12:51 PM, Bill Cardell <[email protected]>wrote: >>> >>>> ** >>>> Graham, >>>> There are only four wires in the obdii IIRC. Invest in a wiring diagram >>>> and you will save yourself a bunch of buying parts you don't need. Another >>>> thing that could cause no start in a heat soaked condition would be leaking >>>> injectors or a bad check valve in the fuel pump. Does it maintain the >>>> Miata's return-less fuel system with the stock Miata pump and regulator in >>>> the tank? >>>> >>>> >>>> Bill Cardell >>>> TurboDog's Dad >>>> Flyin' Miata >>>> 1-800-359-6967 (sales) >>>> 970-464-5600 (tech support) >>>> www.flyinmiata.com >>>> www.fmwestfield.com >>>> >>>> >>>> >>>> ------------------------------ >>>> *From:* fast G [mailto:[email protected]] >>>> *Sent:* Sunday, June 19, 2011 11:42 AM >>>> *To:* Bill Cardell >>>> >>>> *Subject:* Re: Diagnostic help needed >>>> >>>> I took the scuttle of this morning and much as I expected I can find >>>> no OBD2 port. And I cannot see where it was removed, so putting one back in >>>> might be a real pain. So I am left with 2 option 1. Start swapping sensors >>>> 2. Re-install the OBD2 port. I will probably do a combination of 1 and 2. >>>> Swap a couple of sensors while I try and find an OBD2 port and work out how >>>> to re-install it. >>>> >>>> Thanks for you help >>>> >>>> Graham >>>> >>>> On Mon, Jun 13, 2011 at 10:16 PM, fast G <[email protected]> wrote: >>>> >>>>> It does have a diagnostic plug, but not an OBD2 port, at least not one >>>>> I can find. I was told it a 2002 engine, should that have an OBD2 port? >>>>> >>>>> I did not do the wiring, it's a very strange setup. You do have to use >>>>> the key but a lot of operations are controlled by the main on/off race >>>>> style >>>>> switch. >>>>> >>>>> The starter does work, it cranks over perfectly it just does not >>>>> start. >>>>> >>>>> >>>>> On Mon, Jun 13, 2011 at 9:12 PM, Bill Cardell <[email protected]>wrote: >>>>> >>>>>> Did you leave the diagnostic plug in the harness? Wealth of helpful >>>>>> info when you plug in a cheap tester, from trouble codes to live sensor >>>>>> data. >>>>>> >>>>>> Bill Cardell >>>>>> TurboDog's Dad >>>>>> Www.flyinmiata.com >>>>>> 1-800-fly-mx5s >>>>>> 970-464-5600 >>>>>> >>>>>> >>>>>> On Jun 13, 2011, at 5:12 PM, "fast G" <[email protected]> wrote: >>>>>> >>>>>> > I have a 2002 Miata engine/trans in a Lotus 7 clone. It runs and >>>>>> drives perfectly, but suffer from some sort of heat soak issue. It will >>>>>> run >>>>>> fine, is you switch it off and they restart it within seconds your OK. >>>>>> But >>>>>> if you leave it for 5 mins it will not restart. If you take the hood off >>>>>> and >>>>>> let it cool down it with re-start perfectly. I have replaced the cam >>>>>> position sensor on the top of the engine on the back of the inlet cam. >>>>>> But >>>>>> it made no difference. I added a fan controller so I could get the fan to >>>>>> run on after switching the engine off, but it did not really help. So >>>>>> maybe >>>>>> I just have to swap sensors until I find the right one. But what logic >>>>>> can I >>>>>> use to try and decide were to start. >>>>>> > >>>>>> > Thanks >>>>>> > >>>>>> > Graham >>>>>> > _______________________________________________ >>>>>> > Miatapower mailing list >>>>>> > [email protected] >>>>>> > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >>>>>> >>>>> >>>>> >>>> >>> >> >
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