Starting issue

xAimz · 11-30-2010, 01:02 AM

Last problem i will post on here i swear!
Sometimes when my car is cold it starts right up, but when its hot, ( or having mood swings), it doesnt start
it has new starter new bat new everything basically, could it be the starter relay? i turn the key and it makes a click sound, but doesnt start. i gotta keep turning the key till it starts ( sometimes takes like 10mins)

Green7mgte · 11-30-2010, 02:36 PM

when you "click" does your lights an everything stop working? bad battery connection.

if it just "clicks" but you still have power. probably a bad starter connection. ground / power wire, something of the sort.

xAimz · 11-30-2010, 07:27 PM

new battery, lights dont dim, the connection is good, it starts SOMETIMES
it has new starter also.

Bill UK · 11-30-2010, 10:00 PM

See post 2 Link and post 8 Link

Green7mgte · 12-02-2010, 04:31 PM

Quote:

Originally Posted by Green7mgte

if it just "clicks" but you still have power. probably a bad starter connection. ground / power wire, something of the sort.

Quote:

Originally Posted by Bill UK

See post 2 Link and post 8 Link

sounds like a plan

Bru · 12-02-2010, 06:06 PM

I had this exact same problem on my 1987 Supra Turbo. It would start cold normally then after driving and going in somewhere when I came out I would have to cycle the switch 20 times or more to get the thing to start to catch. It turned out to be the fuel pressure up main relay which is located in the fuse box under the hood near the battery. It's the round metal one (MAIN). I got another one at the parts yard by matching the schematic on the side and the part number. RELAY M4 90987-02004 and 056700-4810 I have not had this problem since replacing the relay. Getting one from the Toyota dealer is way expensive. Other Toyota cars use this relay I think I got mine from a Celica. One thing you can try next time this happens is to take out the relay with a piece of towel because it's going to be hot and tap it gently, wait a few munutes, then put back in. If starts right up, it was the relay. Alternatively you could jumper the socket slots 3 and 4 which are the left two going front to back when you pull the relay out but I would only do this for testing purposes and not drive on it or leave the jumper in place.

Green7mgte · 12-06-2010, 06:11 AM

EFI ohmmeter troubleshooting

eh dont know if thats gonna be helpful

mkiiisupra · 12-06-2010, 02:30 PM

When mine doesn't start up right away i have to jiggle the cps wires then she starts right up.

Bru · 12-06-2010, 06:22 PM

I had the same cam position sensor wiring problem in the past too. It went away when I replaced the sensor. I recently rebuilt the sensor using a kit from kbox because the internal oil seal was leaking oil out through the front cover. I made an aluminum foil "cup" to catch the oil drips before I installed the kit. Installing the kit is not for the faint of heart, it takes some skills. I can describe my experience anyone's interested.

Green7mgte · 12-07-2010, 04:29 AM

what?

a rebuild kit? you mean a new dust cover packing gasket and an o ring?
yea i bought that to.. 10 bucks from Toyota.

11-30-2010, 01:02 AM	#1
xAimz Intake Join Date: Nov 2010 Location: florida Posts: 30	Starting issue Last problem i will post on here i swear! Sometimes when my car is cold it starts right up, but when its hot, ( or having mood swings), it doesnt start it has new starter new bat new everything basically, could it be the starter relay? i turn the key and it makes a click sound, but doesnt start. i gotta keep turning the key till it starts ( sometimes takes like 10mins)

11-30-2010, 02:36 PM	#2
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	when you "click" does your lights an everything stop working? bad battery connection. if it just "clicks" but you still have power. probably a bad starter connection. ground / power wire, something of the sort. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

11-30-2010, 10:00 PM	#4
Bill UK AEM EMS Join Date: Jul 2006 Location: UK Posts: 891	See post 2 Link and post 8 Link Last edited by Bill UK; 11-30-2010 at 10:36 PM. Reason: Added post 8 Link

12-02-2010, 06:06 PM	#6
Bru Bone Stock w Upgrades ;-) Join Date: Apr 2010 Location: Tampa Bay Posts: 210	I had this exact same problem on my 1987 Supra Turbo. It would start cold normally then after driving and going in somewhere when I came out I would have to cycle the switch 20 times or more to get the thing to start to catch. It turned out to be the fuel pressure up main relay which is located in the fuse box under the hood near the battery. It's the round metal one (MAIN). I got another one at the parts yard by matching the schematic on the side and the part number. RELAY M4 90987-02004 and 056700-4810 I have not had this problem since replacing the relay. Getting one from the Toyota dealer is way expensive. Other Toyota cars use this relay I think I got mine from a Celica. One thing you can try next time this happens is to take out the relay with a piece of towel because it's going to be hot and tap it gently, wait a few munutes, then put back in. If starts right up, it was the relay. Alternatively you could jumper the socket slots 3 and 4 which are the left two going front to back when you pull the relay out but I would only do this for testing purposes and not drive on it or leave the jumper in place. Last edited by Bru; 12-02-2010 at 06:22 PM.

12-06-2010, 06:11 AM	#7
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	EFI ohmmeter troubleshooting eh dont know if thats gonna be helpful __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

11-30-2010, 07:27 PM	#3
xAimz Intake Join Date: Nov 2010 Location: florida Posts: 30	new battery, lights dont dim, the connection is good, it starts SOMETIMES it has new starter also.

12-06-2010, 02:30 PM	#8
mkiiisupra Lexus & 550's Join Date: Sep 2007 Location: Las Vegas, NV Posts: 570 Blog Entries: 1	When mine doesn't start up right away i have to jiggle the cps wires then she starts right up. __________________ 1990 Toyota Supra Turbo A/T ------------------------------------------------ Questions about oil? take a look http://www.supramania.com/aehaas/

12-06-2010, 06:22 PM	#9
Bru Bone Stock w Upgrades ;-) Join Date: Apr 2010 Location: Tampa Bay Posts: 210	I had the same cam position sensor wiring problem in the past too. It went away when I replaced the sensor. I recently rebuilt the sensor using a kit from kbox because the internal oil seal was leaking oil out through the front cover. I made an aluminum foil "cup" to catch the oil drips before I installed the kit. Installing the kit is not for the faint of heart, it takes some skills. I can describe my experience anyone's interested. Last edited by Bru; 12-06-2010 at 06:25 PM.

12-07-2010, 04:29 AM	#10
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	what? a rebuild kit? you mean a new dust cover packing gasket and an o ring? yea i bought that to.. 10 bucks from Toyota. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines : Last edited by Green7mgte; 12-07-2010 at 04:36 AM.

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