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05-11-2025
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#1 |
 
Join Date: Mar 2008
Location: Auburn, KY
Posts: 568
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Starter Interrupt relay
I've been going back and forth with this issue with my 93 ZR-1. When the starter interrupt relay gets hot, I can't start the engine. Does anyone have the GM part number for the relay and do they still make them? I called a bunch of automotive stores and they don't have any in stock.
Roy
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Roy L. Carman If I feel the need for speed, I just think about flying the B-777.  1989 Dk Blue Coupe lost in divorce 1991 Black Coupe SOLD 1992 Black ZR-1 #423 SOLD! 1993 Ruby Red 40th Anniversary ZR-1 #334 1995 Black ZR-1 taken by ex-wife 2002 Pewter Coupe no idea where it is 2003 50th Anniversary Corvette #No idea what number SOLD! ZR-1 Net Registry #516 Grand Sport Lifetime Member NCM Lifetime #1468 |
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05-11-2025
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#2 |
 
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,168
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Re: Starter Interrupt relay
Where is it located on the car? You have a part number?
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978 |
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05-11-2025
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#3 |
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Join Date: Mar 2008
Location: Auburn, KY
Posts: 568
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Re: Starter Interrupt relay
I don't have a part number. That's what I'm trying to find out. It located behind the driver side dash panel. It's a pain to replace.
Roy
__________________
Roy L. Carman If I feel the need for speed, I just think about flying the B-777. 1989 Dk Blue Coupe lost in divorce 1991 Black Coupe SOLD 1992 Black ZR-1 #423 SOLD! 1993 Ruby Red 40th Anniversary ZR-1 #334 1995 Black ZR-1 taken by ex-wife 2002 Pewter Coupe no idea where it is 2003 50th Anniversary Corvette #No idea what number SOLD! ZR-1 Net Registry #516 Grand Sport Lifetime Member NCM Lifetime #1468 |
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05-11-2025
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#4 |
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Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,168
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Re: Starter Interrupt relay
IS this the one that is listed in the FSM as Starter Enable Relay? (Page 8A-201-9, Figure 24 of the 1990 FSM)
I want to confirm before giving you bad info
__________________
1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978 |
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05-11-2025
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#5 |
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Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,168
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Re: Starter Interrupt relay
here is the replacement relay for the Starter Enable.. That should help you chase down OEM
https://www.rockauto.com/en/moreinfo...8E8dGtog%3D%3D
__________________
1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978 |
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05-12-2025
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#6 |
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Join Date: Mar 2008
Location: Auburn, KY
Posts: 568
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Re: Starter Interrupt relay
My car is a 93 ZR-1 and it is different than the 1990 ZR-1. The relay is on page 8C-28 and is diagram 32. I looked online at Rock Auto and the part that you mentioned is different than what I see. Thanks for the help.
Roy
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Roy L. Carman If I feel the need for speed, I just think about flying the B-777. 1989 Dk Blue Coupe lost in divorce 1991 Black Coupe SOLD 1992 Black ZR-1 #423 SOLD! 1993 Ruby Red 40th Anniversary ZR-1 #334 1995 Black ZR-1 taken by ex-wife 2002 Pewter Coupe no idea where it is 2003 50th Anniversary Corvette #No idea what number SOLD! ZR-1 Net Registry #516 Grand Sport Lifetime Member NCM Lifetime #1468 |
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05-12-2025
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#7 |
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Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,168
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Re: Starter Interrupt relay
Probably a smaller form factor. I don't have a 93 FSM so I can't check it out
__________________
1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978 |
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05-12-2025
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#8 |
 
Join Date: Oct 2023
Location: Germany
Posts: 45
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Re: Starter Interrupt relay
I had a quick look in the Corvette Part books. I have two versions :
- a PDF one which covers 1984 to 1996 (quite old) - A printed version which covers 1984 to 1993 (got it 2 years ago, recently printed). In the PDF (1984 - 1996) : The official part number seems to be : GM 14100455 or AC-DELCO #15-8426 which is a 5 pins relay. In the book, they group all the Instrument Panel relay under a single schematic number (31). I guess that was easier than drawing every single relays. In the printed book (1984 - 1993) I get : GM 25520198. This is also a 5 pin relay. Last edited by RSLyrick; 05-12-2025 at 12:16 PM. |
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Linear Mode
