[Supras] MKIII Starting issues

[Sean Cavanaugh]

i say check the security computer in the car. my original supra had a transistor on the board explode, and then toyota told me the part never existed when i took it to them to get it replaced (12 wire version vs. 14 wire version, and part number not in the system). look up the wiring diagrams and check the voltage on the NEGATIVE lead connecting it to the solenoid (security computer removes the ground point for solenoid when tripped, disabling it from working.), obviously with a good positive connection to use as a reference, such as a temp line straight to battery.
 
the tech prob created a current for the solenoid when he hooked his probes up to it hence why it worked then.
 
the relays DO have issues of not working sometimes. some people just replace with stock part, others replace with one from a mustang that lasts a bit longer.
my backup was a direct connection from battery to switch contact on starter (not best idea, but works in an emergency)



> From: bob at hairballcreations.com> To: turbogeek87 at hotmail.com; supras at supras.com> Date: Fri, 22 Jun 2007 10:57:54 -0400> Subject: Re: [Supras] MKIII Starting issues> > Larry, check the basics first...> > Check the battery, battery terminals and the battery cables. Have someone> load test the system. Most big boxes do it for free> > I had a similar problem and even though I should have known better I was> prepared to pull the starter.> > The entire problem was bad battery cable ends and a slowly failing battery.> > > My problem was just like your description> > Bob> > > > > -----Original Message-----> From: supras-bounces at supras.com [mailto:supras-bounces at supras.com] On Behalf> Of Larry B> Sent: Thursday, June 21, 2007 10:28 PM> To: supras at supras.com> Subject: [Supras] MKIII Starting issues> > When I turn the key, nothing happens except for a voltage drop. The solinoid> > does not click. Starter and solinoid are a year old. I tried bypassing the > keyswitch with 12 volts to the soliniod and no change. I can see the clutch > safety switch is working because the voltage drop does not happen unless the> > switch is depressed. I had a tech look at it and it started working again > after he touched the solinoid switch with a probe. He suggested it might be > an issue with the alarm?? or the key switch. How does the alarm work with > the start cut? What about the relay for the starter, is that known to have > issues?> Thanks for your response.> > Larry B> > _________________________________________________________________> Need a break? Find your escape route with Live Search Maps. > http://maps.live.com/default.aspx?ss=Restaurants~Hotels~Amusement%20Park&cp=> 33.832922~-117.915659&style=r&lvl=13&tilt=-90&dir=0&alt=-1000&scene=1118863&> encType=1&FORM=MGAC01> > > _______________________________________________> Supras mailing list> Supras at supras.com> http://supras.com/mailman/listinfo/supras_supras.com> > > -- > No virus found in this incoming message.> Checked by AVG Free Edition. > Version: 7.5.472 / Virus Database: 269.9.4/860 - Release Date: 6/21/2007> 5:53 PM> > > > _______________________________________________> Supras mailing list> Supras at supras.com> http://supras.com/mailman/listinfo/supras_supras.com
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