OK........ What The HELL!!!!!!

Old Man Supra · 10-12-2010, 06:21 PM

Hello, No I have not done anything like that yet but when I had the first issues like this awhile back because of the battery hookup being wrong all those things[fuel/spark] came right back to life[and everything else was working besides those issues before, I just couldn't get it to start] it was the PCM that was bad and once like I said it was replaced it WAS working just fine.Something has changed [failed] obviously but what that is ??????????

89ST · 10-14-2010, 03:27 PM

Hi, currently having a similar problem with my car, very frustrating i know.
umm.. your rough idle would have made me think timing but since it started running fine after that kinda eliminates that. However you could still check to insure your cam position sensor is tight. First thing i'd check is fuel though. Supply the fuel pump with a 12v source while the car is off and see if it runs. If its working you'll easily hear it.

Hope that helps

porsche944god · 10-16-2010, 11:55 PM

Bad main relay....? But easy way to check fuel pump operation pop off the mass air flow top and hold vane open with key on or there is a jumper plug near by that also will turn pump on. Highly doubt its the pcm possible tps or like i said possible bad main relay underhood.

bradenman1 · 10-17-2010, 12:51 AM

i was having similar problems awhile back it turned out that my o2 sensor wire came out of its retaining bracket on the engine and it melted the protective coating and started to short the wires out causing odd problems such as starting issues and dieing maybe check them they are located under the turbo and exhaust manifold on the 7mgte if i remember correctly

once i taped up the injured wires it ran just fine until bhg

10-12-2010, 06:21 PM	#1
Old Man Supra Stock Join Date: May 2010 Location: Minnesota Posts: 13	Supra Mark III Now Once Again Will Not Start Hello, No I have not done anything like that yet but when I had the first issues like this awhile back because of the battery hookup being wrong all those things[fuel/spark] came right back to life[and everything else was working besides those issues before, I just couldn't get it to start] it was the PCM that was bad and once like I said it was replaced it WAS working just fine.Something has changed [failed] obviously but what that is ??????????

10-17-2010, 12:51 AM	#4
bradenman1 3" Exhaust Join Date: Jan 2010 Location: texas Posts: 105	i was having similar problems awhile back it turned out that my o2 sensor wire came out of its retaining bracket on the engine and it melted the protective coating and started to short the wires out causing odd problems such as starting issues and dieing maybe check them they are located under the turbo and exhaust manifold on the 7mgte if i remember correctly once i taped up the injured wires it ran just fine until bhg __________________ Cars: 1995 NIssan altima with 2 year old pant on black Drag DR-8 17x7 Wheels with brand new Goodyear Eagle GT's Custom Blue Parking lights with White silverstar head lights JDM Ebay Catback Exhaust. K&N air filter. (Totaled Due To An Idiot) bone stock (for now) 1990 Supra Turbo With a brand new CT-26 Turbo And New Exhaust Manifold. Now With A Brand New Blown Head Gasket Now driving a 99 Nissan Maxima 5spd with the passanger side bashed in from passing out at the wheel nice cars ehh??

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10-14-2010, 03:27 PM	#2
89ST Intake Join Date: Sep 2010 Location: Hamilton Ontario Posts: 40	Hi, currently having a similar problem with my car, very frustrating i know. umm.. your rough idle would have made me think timing but since it started running fine after that kinda eliminates that. However you could still check to insure your cam position sensor is tight. First thing i'd check is fuel though. Supply the fuel pump with a 12v source while the car is off and see if it runs. If its working you'll easily hear it. Hope that helps

10-16-2010, 11:55 PM	#3
porsche944god Stock Join Date: Sep 2010 Location: tennessee Posts: 18	Bad main relay....? But easy way to check fuel pump operation pop off the mass air flow top and hold vane open with key on or there is a jumper plug near by that also will turn pump on. Highly doubt its the pcm possible tps or like i said possible bad main relay underhood.