ignition switch power ? stumped

db86na · 11-29-2011, 03:52 PM

im having some problems with my fc ive replaced the battery , ignition switch ,main relay , and almost all my fusses. my idiot lights will not come on or will the car click or crank ,all i have is hazards and head lights and this door beeper, i am getting 12.46v to the ignition switch but when i turn the key to start it goes away. i know it sounds like a bad ignition switch but i have tried 3 of them now and one was from a running car. what should i check next

Raksj04 · 11-29-2011, 04:02 PM

Is the battery hooked up correctly. I only say this because I have installed the battery backwards before.

db86na · 11-29-2011, 04:05 PM

yes battery is new and correct and i have new termenels that i took the paint off also and i jumped the starter and it crank the motor over

djmtsu · 11-29-2011, 04:51 PM

Clutch switch? Neutral safety switch?

db86na · 11-29-2011, 04:54 PM

Clutch switch is bypassed

Raksj04 · 11-29-2011, 05:08 PM

did you replace the fuses to rule them out or because they where blown?

My5ABaby · 11-29-2011, 05:18 PM

I'd check your grounds and general power connections. I had this happen a couple times. Once when my battery terminals weren't connecting well and once when my starter wire (where it hooks into the starter) wasn't connecting well.

db86na · 11-29-2011, 05:36 PM

Replaced fussed to rule them out took starter off and cleaned connections to solinoid also clean driver strut tower ground I am getting power to my ignition switch but once I turn key to start the volts drop to zero

Raksj04 · 11-29-2011, 05:40 PM

I would meter right after the switch. or take it off and measure the resistance thru the switch. Just to rule it out.

db86na · 11-29-2011, 06:13 PM

Thanks for the replys and help, I will check continuity tonight hopefully I can just clean the ignition contacts and will be back on the road soon since I have only drove the car twice since I bought it

db86na · 12-01-2011, 09:29 PM

ok so a new ignition switch and still no click no start no idiot lights or turn signals wtf.

dabranco · 12-01-2011, 09:51 PM

OK
1. We can safely rule out the ignition switch.
2. Check all of you connections, and wires as well. I.E. Start with a good through look at the cables going from the battery. Positive isn't arcing or grounding out, and is in good solid working order, next do the same for the neg.
3. Double check all fuses and relays make sure they are in good working order
4. Look at your ignition switch make sure you did not cross any wires and it is hooked up correctly.
5. I should have put this first test the battery make sure it is good.
Start here and keep us posted.

db86na · 12-01-2011, 10:04 PM

battery is charged all fusses and main relay are new, ignition switch plugs are correct, battery cabel and grounds cleaned no arcing clutch switch bypassed

dabranco · 12-01-2011, 10:19 PM

How are the connectors on the battery I had this issue with my 95 Bronco ans 78 Bronco and also the 84 RX7, Try wiggling them a little bit to see if you can get a better connection.
This I am assuming by the basis of when you get in the car all lights work normally, you go and turn the key and nothing if this is the wrong assumption let me know.

db86na · 12-01-2011, 11:17 PM

connections to battery are good. i have 12v going to the white/red wire on ignition switch when it is turned to off but once i turn to acc it goes down to .50v

11-29-2011, 03:52 PM	#1
db86na Rotary Fan in Training Join Date: Nov 2011 Location: spokane wa Posts: 47 Rep Power: 0	ignition switch power ? stumped im having some problems with my fc ive replaced the battery , ignition switch ,main relay , and almost all my fusses. my idiot lights will not come on or will the car click or crank ,all i have is hazards and head lights and this door beeper, i am getting 12.46v to the ignition switch but when i turn the key to start it goes away. i know it sounds like a bad ignition switch but i have tried 3 of them now and one was from a running car. what should i check next

11-29-2011, 04:51 PM	#4
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 4,043 Rep Power: 22	Clutch switch? Neutral safety switch? __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

11-29-2011, 05:18 PM	#7
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 2,377 Rep Power: 20	I'd check your grounds and general power connections. I had this happen a couple times. Once when my battery terminals weren't connecting well and once when my starter wire (where it hooks into the starter) wasn't connecting well. __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

11-29-2011, 04:02 PM	#2
Raksj04 I have Ultra power in me. Join Date: Sep 2011 Posts: 457 Rep Power: 14	Is the battery hooked up correctly. I only say this because I have installed the battery backwards before.

11-29-2011, 04:05 PM	#3
db86na Rotary Fan in Training Join Date: Nov 2011 Location: spokane wa Posts: 47 Rep Power: 0	yes battery is new and correct and i have new termenels that i took the paint off also and i jumped the starter and it crank the motor over

11-29-2011, 04:54 PM	#5
db86na Rotary Fan in Training Join Date: Nov 2011 Location: spokane wa Posts: 47 Rep Power: 0	Clutch switch is bypassed

11-29-2011, 05:08 PM	#6
Raksj04 I have Ultra power in me. Join Date: Sep 2011 Posts: 457 Rep Power: 14	did you replace the fuses to rule them out or because they where blown?

11-29-2011, 05:36 PM	#8
db86na Rotary Fan in Training Join Date: Nov 2011 Location: spokane wa Posts: 47 Rep Power: 0	Replaced fussed to rule them out took starter off and cleaned connections to solinoid also clean driver strut tower ground I am getting power to my ignition switch but once I turn key to start the volts drop to zero

11-29-2011, 05:40 PM	#9
Raksj04 I have Ultra power in me. Join Date: Sep 2011 Posts: 457 Rep Power: 14	I would meter right after the switch. or take it off and measure the resistance thru the switch. Just to rule it out.

11-29-2011, 06:13 PM	#10
db86na Rotary Fan in Training Join Date: Nov 2011 Location: spokane wa Posts: 47 Rep Power: 0	Thanks for the replys and help, I will check continuity tonight hopefully I can just clean the ignition contacts and will be back on the road soon since I have only drove the car twice since I bought it

12-01-2011, 09:29 PM	#11
db86na Rotary Fan in Training Join Date: Nov 2011 Location: spokane wa Posts: 47 Rep Power: 0	ok so a new ignition switch and still no click no start no idiot lights or turn signals wtf.

12-01-2011, 09:51 PM	#12
dabranco Rotary Fan in Training Join Date: Nov 2011 Posts: 47 Rep Power: 0	OK 1. We can safely rule out the ignition switch. 2. Check all of you connections, and wires as well. I.E. Start with a good through look at the cables going from the battery. Positive isn't arcing or grounding out, and is in good solid working order, next do the same for the neg. 3. Double check all fuses and relays make sure they are in good working order 4. Look at your ignition switch make sure you did not cross any wires and it is hooked up correctly. 5. I should have put this first test the battery make sure it is good. Start here and keep us posted.

12-01-2011, 10:04 PM	#13
db86na Rotary Fan in Training Join Date: Nov 2011 Location: spokane wa Posts: 47 Rep Power: 0	battery is charged all fusses and main relay are new, ignition switch plugs are correct, battery cabel and grounds cleaned no arcing clutch switch bypassed

12-01-2011, 10:19 PM	#14
dabranco Rotary Fan in Training Join Date: Nov 2011 Posts: 47 Rep Power: 0	How are the connectors on the battery I had this issue with my 95 Bronco ans 78 Bronco and also the 84 RX7, Try wiggling them a little bit to see if you can get a better connection. This I am assuming by the basis of when you get in the car all lights work normally, you go and turn the key and nothing if this is the wrong assumption let me know.

12-01-2011, 11:17 PM	#15
db86na Rotary Fan in Training Join Date: Nov 2011 Location: spokane wa Posts: 47 Rep Power: 0	connections to battery are good. i have 12v going to the white/red wire on ignition switch when it is turned to off but once i turn to acc it goes down to .50v