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Old 06-02-2013   #11
LGAFF
 
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Default Re: Starting issue

Connected the clutch wires......replaced what I think was the starter relay....did not seem to jive with the diagram, but the wires were yellow/blck and connected to thec clutch switch....so I think I have it right
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90 #966-150K miles-sold
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1987 Callaway TT #17
1991 ZR-1 #1359

Last edited by LGAFF; 06-02-2013 at 12:50 PM.
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Old 06-02-2013   #12
Z51JEFF
 
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Default Re: Starting issue

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Originally Posted by LGAFF View Post
Connmected the clutch wires......replaced what I think was the starter relay....did not seem to jive with the diagram, but the wires were yellow/blck and connected to thec clutch switch....so I think I have it right
The yellow stripped black wire is for the starter relay,thats the ground I believe.
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Old 06-02-2013   #13
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Default Re: Starting issue





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1991 ZR-1 #1359
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Old 06-02-2013   #14
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Default Re: Starting issue

Is this the backside of the Starter relay? one with yellow wires?


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90 #966-150K miles-sold
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1987 Callaway TT #17
1991 ZR-1 #1359
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Old 06-02-2013   #15
Z51JEFF
 
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Default Re: Starting issue

The starter relay is the one closest to the column,I think.I pulled the relay and tried to start the car just to make sure.The yellow stripped black wire should be the relay ground,the 14-16 gage wire with the non factory blue splice connector on it.

Last edited by Z51JEFF; 06-02-2013 at 03:27 PM.
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Old 06-02-2013   #16
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Default Re: Starting issue

Its hard to make out anything in these pictures but this is the splice I made for the new ground,I ran a 10 gage ground wire from the splice to a stud coming off of the dash support.[IMG][/IMG][IMG][/IMG][IMG][/IMG]
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Old 06-02-2013   #17
scottfab
 
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Default Re: Starting issue

Quote:
Originally Posted by LGAFF View Post
...snip...

-There is a voltage drop when I turn the key, but no clicking, nothing happens
Can you explain "voltage drop"? On the battery? or ???

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Originally Posted by LGAFF View Post
-Had the battery checked: no issues 12.6 volats

-Checked the alt: outputting 13.8-14.1 volts; steady output
The important number is what the battery measures when the key is turned. If 11.5 - 12.6 then fine.

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**If you jump start it, bang....starts right up and will run good for days

**Starter is new
Just by this I'd say battery but more info needed.
Thing about the clutch switch on the early cars is you never want to turn the key before fully depressing the clutch peddle. The contacts can handle the current just fine IF the switch is engaged. Problems happens when the key is turned first and the then the peddle pushed (or at the same time). The switch gets arced in this case. Too many times arcing the switch damages them. I had a problem in 97 but none since then.
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Old 06-02-2013   #18
LGAFF
 
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Default Re: Starting issue

I almost think its the battery also, it was made 6/2012 and installed this year. They did a load test yesterday and its fine.

We will find out
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1987 Callaway TT #17
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Old 06-02-2013   #19
LGAFF
 
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Default Re: Starting issue

Scott by volatage drop I am referring to the fact that when you turn the key volts drop on the dash
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1987 Callaway TT #17
1991 ZR-1 #1359
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Old 06-02-2013   #20
Tyler Townsley
 
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Default Re: Starting issue

Quote:
Originally Posted by LGAFF View Post
Connected the clutch wires......replaced what I think was the starter relay....did not seem to jive with the diagram, but the wires were yellow/blck and connected to thec clutch switch....so I think I have it right
90-91s do not have a relay in the ckt which is the problem, usually the clutch switch activates a relay to better handle the current. As I said the clutch switch takes all the current and becomes unstable. If you follow the purple wire you can just jump around the switch where they go down to the switch.

yler
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