Hot Start Problems!!

Bonz · 04-05-2008, 11:51 AM

I have a 90 7mgte that will start from cold will restart straight away when hot but if left for a couple of minutes will not start

until fully cold. There seems to be no signal to the injectors, no power to fuel pump but when bridged will run,all temp sensors work,cps works, even rewired the cps terminals, efi relay works, main circuit relay works.
Any suggestions??

please not the ecu!!

supramacist · 04-05-2008, 05:41 PM

Pull codes.

Find a baby sitter.

Buy a honda or a nissan.

But pull the codes 1st.

Bonz · 04-06-2008, 12:56 PM

no error codes just done full pin check on ecu still will not start

cre · 04-06-2008, 05:34 PM

If the fuel pump is the only thing loosing power then the fuel pump resistor pack or relay (mounted to the passenger side fender) may have failed. Try bypassing them, starting with the resistor pack.

supramacist · 04-06-2008, 07:14 PM

Break out the volt meter and start metering any and everything.
Double check all of it.

You'll track it down with minimal effort.

LOL...., did you price hondas and nissans yet??

supramacist · 04-06-2008, 07:15 PM

Fuel pump relay???

Have you checked all of your sensors?

Bonz · 04-13-2008, 05:24 PM

sorted problem ecu has fault failing under load thanks to everyone with suggestions by the way i run a cosworth sierra would not consider a honda etc

supramacist · 04-14-2008, 05:37 AM

Cool. I wasn't serious about the honda.

04-05-2008, 11:51 AM	#1
Bonz Stock Join Date: Apr 2008 Location: england Posts: 3	Hot Start Problems!! I have a 90 7mgte that will start from cold will restart straight away when hot but if left for a couple of minutes will not startuntil fully cold. There seems to be no signal to the injectors, no power to fuel pump but when bridged will run,all temp sensors work,cps works, even rewired the cps terminals, efi relay works, main circuit relay works. Any suggestions?? please not the ecu!!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
87 Supra won't start	RNEMESiS42	MKIII Supra	3	06-25-2011 06:30 PM
Down to two possible problems	Micahwc	MKIII Supra	13	07-13-2008 10:18 AM
starting problems	Donovan	MKIII Supra	2	06-09-2007 05:53 PM
problems, problems, and problems	tone loc	MKIII Supra	6	09-06-2006 04:35 AM
Starting problems HELP	adellicson	MKIII Supra	0	05-08-2006 03:42 AM

04-05-2008, 05:41 PM	#2
supramacist 1000whp postwhore Join Date: Apr 2007 Location: Escape from the Prison Planet Posts: 1,356	Pull codes. Find a baby sitter. Buy a honda or a nissan. But pull the codes 1st.

04-06-2008, 12:56 PM	#3
Bonz Stock Join Date: Apr 2008 Location: england Posts: 3	no error codes just done full pin check on ecu still will not start

04-06-2008, 05:34 PM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	If the fuel pump is the only thing loosing power then the fuel pump resistor pack or relay (mounted to the passenger side fender) may have failed. Try bypassing them, starting with the resistor pack.

04-06-2008, 07:14 PM	#5
supramacist 1000whp postwhore Join Date: Apr 2007 Location: Escape from the Prison Planet Posts: 1,356	Break out the volt meter and start metering any and everything. Double check all of it. You'll track it down with minimal effort. LOL...., did you price hondas and nissans yet??

04-06-2008, 07:15 PM	#6
supramacist 1000whp postwhore Join Date: Apr 2007 Location: Escape from the Prison Planet Posts: 1,356	Fuel pump relay??? Have you checked all of your sensors?

04-13-2008, 05:24 PM	#7
Bonz Stock Join Date: Apr 2008 Location: england Posts: 3	sorted problem ecu has fault failing under load thanks to everyone with suggestions by the way i run a cosworth sierra would not consider a honda etc

04-14-2008, 05:37 AM	#8
supramacist 1000whp postwhore Join Date: Apr 2007 Location: Escape from the Prison Planet Posts: 1,356	Cool. I wasn't serious about the honda.