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1991 Chevy S-10 Engine coolant temp sensor

Tiny
MATT4401
  • MEMBER
  • 1991 CHEVROLET S-10
Electrical problem
1991 Chevy S-10 4 cyl Two Wheel Drive Manual

What color is the wire that actually comes out of the ecm that hooks up to the ect? I know the wire coming out of the ect is green, but need to know what color the wire is and where it is located on the connector that hooks up to the ecm. This truck has a 2.5L 4 cylinder.
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Monday, January 5th, 2009 AT 8:34 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Is this an S-10 Blazer or S-10 Truck?
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Monday, January 5th, 2009 AT 8:43 PM
Tiny
MATT4401
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  • 12 POSTS
It`s a truck.
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Monday, January 5th, 2009 AT 8:59 PM
Tiny
RASMATAZ
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The color is yellow to ECT from the ECM circuit 410/C-10 and black wire for ground-see below


https://www.2carpros.com/forum/automotive_pictures/12900_cts_23.jpg

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Monday, January 5th, 2009 AT 9:11 PM
Tiny
MIDAS414
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https://www.2carpros.com/forum/automotive_pictures/295662_cts_1.jpg

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Monday, January 5th, 2009 AT 9:12 PM
Tiny
MATT4401
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Hey thanks alot. You have been a really big help.
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Monday, January 5th, 2009 AT 9:55 PM

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