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06-28-2009, 09:14 PM
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#1 |
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Registered User
Join Date: Nov 2006
Location: Maple Grove, MN
Posts: 149
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What plugs in here?
I was doing a little maintenance under the hood of my 87' V10 today and noticed a few things that I was unsure about. If someone can tell me what, or if anything is supposed to plug into the following connectors, I would really appreciate it. I have the factory service manual, but can't figure out if something is disconnected under my hood, or it is supposed to be that way. My truck runs, but still wondering. It's also a 5.7 350. I have attached pics for reference. if someone can tell me what they are, and if if they are unplugged, what they are supposed to go into, I would appreciate it. Thanks
Note the first one is behind the air cleaner and is a black connector with a white wire that is not connected to anything. Second one is on the firewall and is a black connector with a red wire, again not connected to anything. I hope I posted the pictures correctly. http://i889.photobucket.com/albums/ac95/87403/001.jpg http://i889.photobucket.com/albums/ac95/87403/002.jpg |
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06-28-2009, 09:38 PM
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#2 |
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Registered User
Join Date: Jan 2009
Location: New Orleans, LA
Posts: 702
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Re: What plugs in here?
First the pics are great. The first one (white wire) is for a Tach signal. The other (red wire) is to check the fuel pump. That is if I am recognizing this as a TBI engine correctly? They are fine to leave unplugged they came that way from the factory.
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82 Chevy SWB "OrangeAnimal" Lot of Goodies! Sold 93 GMC 1500 "Angry Red" 383 TBI Powered Fun! 300hp/410ft.lbs. 09 Yaris wife's daily. Last edited by OrangeAnimal; 06-28-2009 at 09:39 PM. |
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06-28-2009, 09:38 PM
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#3 |
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Gettin It One Pice At A Time
Join Date: Oct 2004
Location: everett, washington
Posts: 2,688
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Re: What plugs in here?
I kinda wonder if the first one is for the tach?
Slow typing wins again! lol
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RIP ELJAY   Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby Last edited by 79gmcc15; 06-28-2009 at 09:40 PM. |
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06-28-2009, 09:54 PM
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#4 |
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Registered User
Join Date: Nov 2006
Location: Maple Grove, MN
Posts: 149
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Re: What plugs in here?
This truck is bone stock and never been modified, so I figured they were supposed to be unplugged, but not sure. Not to start a new topic, but I don't believe a tach was a factory option in 1987 was it? And yes, it is a TBI engine. Thanks for the help, now I can put my air cleaner back on and not worry!
Another question, what is this, and is it supposed to bolt to the side of my air cleaner? It has just been setting on the valve cover. I noticed a small hole in the side of my air cleaner and it looks by the small bolt in it, that is is to fit in that hole and then be held on by a small nut inside. Am I correct? http://i889.photobucket.com/albums/ac95/87403/004.jpg |
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06-29-2009, 10:22 AM
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#5 |
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Arrived on a Pale Horse
Join Date: Mar 2007
Location: SnagTown Indiana
Posts: 2,524
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Re: What plugs in here?
Map sensor. It should have a bracket for a home. I can get a pic of mine if need be.
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Jason 87 V30 350TBI/400 White w/Boss V-plow 89 R3500 CC SRW |
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06-29-2009, 12:23 PM
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#6 |
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Registered User
Join Date: Nov 2006
Location: Maple Grove, MN
Posts: 149
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Re: What plugs in here?
Thanks for your help. A picture of yours in the bracket would be great! I'll look at mine tonight and see if the said bracket is there or not.
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