Emissions Routing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dhill3443 · 11-02-2006, 10:47 PM

Wondering if anyone has or knows where I can get the vacuum route decals or schematics on emissions for a 1985 C10 Scottsdale. 305 Engine, 350 transmission. Mine are totally screwed up by the previous owner.

blaserman · 11-03-2006, 03:08 AM

Would the routing ne the same from a 86 Blazer? If so I think I still have something on it left from mine.

Art

dhill3443 · 11-03-2006, 07:56 AM

I'm not sure but I'll check on it today. Thanks

wedgemon · 11-03-2006, 12:04 PM

Is there any of the old decal left?? There's a code number in one of the corners.

wedgemon · 11-03-2006, 12:08 PM

BTW The diagram above is for 1985 305 (5.0L) V8 engine — 4bbl federal low altitude with automatic transmission. Code UHJ.

- Dave

dhill3443 · 11-03-2006, 02:34 PM

No none of the decals are anywhere except the glove box decal of the truck explaing the package. I've drawn a diagram of what I have and what your decal looks like is identical to what my lines look like even the sensors. My truck is a 1985 with a 305 engine and 350 turbo trans. I think mine had a couple more vacuum lines that are on sensors on the fire wall. One wire goes to the A/C and the other to a box inside the truck behind the glove box. I have no earthly idea what that box is doing. My HEI or nothing else is hooked up to it. But a 4 prong connector is out under the hood beside the engine with nothing hooked up to it. I think someone must have removed something. I have to find a wiring diagram also for this model. I need to find out the idle, low and high, and the timing. Thanks

dhill3443 · 11-08-2006, 11:46 PM

Thanks for the diagram. I believe most of it will work. I have a few more items on mine I have to figure out especially the box behind the glove compartment. Thanks again.

11-02-2006, 10:47 PM	#1
dhill3443 Chevy pulling Camper Join Date: Oct 2006 Location: North Carolina Posts: 52	Emissions Routing Wondering if anyone has or knows where I can get the vacuum route decals or schematics on emissions for a 1985 C10 Scottsdale. 305 Engine, 350 transmission. Mine are totally screwed up by the previous owner.

11-03-2006, 03:08 AM	#2
blaserman Senior Member Join Date: Nov 2004 Location: glen burnie md Posts: 447	Re: Emissions Routing Would the routing ne the same from a 86 Blazer? If so I think I still have something on it left from mine. Art __________________ This is my best friend

11-03-2006, 07:56 AM	#3
dhill3443 Chevy pulling Camper Join Date: Oct 2006 Location: North Carolina Posts: 52	Re: Emissions Routing I'm not sure but I'll check on it today. Thanks

11-03-2006, 12:04 PM	#4
wedgemon Registered User Join Date: Jul 2004 Location: Spanish Springs, NV Posts: 1,171	Re: Emissions Routing Is there any of the old decal left?? There's a code number in one of the corners. __________________ 2003 Silverado K1500 Z71 - Arrival Blue 1973 K5 Cheyenne Blazer 350/TH350/NP203 Kids Trucks:92 K1500 Blazer 5.7/700R4 4" lift. RETIRED: 1980 Scottsdale 4x4 Founding Member: "TILT WHEEL BELLY." Club

11-03-2006, 12:08 PM	#5
wedgemon Registered User Join Date: Jul 2004 Location: Spanish Springs, NV Posts: 1,171	Re: Emissions Routing BTW The diagram above is for 1985 305 (5.0L) V8 engine — 4bbl federal low altitude with automatic transmission. Code UHJ. - Dave __________________ 2003 Silverado K1500 Z71 - Arrival Blue 1973 K5 Cheyenne Blazer 350/TH350/NP203 Kids Trucks:92 K1500 Blazer 5.7/700R4 4" lift. RETIRED: 1980 Scottsdale 4x4 Founding Member: "TILT WHEEL BELLY." Club

11-03-2006, 02:34 PM	#6
dhill3443 Chevy pulling Camper Join Date: Oct 2006 Location: North Carolina Posts: 52	Re: Emissions Routing No none of the decals are anywhere except the glove box decal of the truck explaing the package. I've drawn a diagram of what I have and what your decal looks like is identical to what my lines look like even the sensors. My truck is a 1985 with a 305 engine and 350 turbo trans. I think mine had a couple more vacuum lines that are on sensors on the fire wall. One wire goes to the A/C and the other to a box inside the truck behind the glove box. I have no earthly idea what that box is doing. My HEI or nothing else is hooked up to it. But a 4 prong connector is out under the hood beside the engine with nothing hooked up to it. I think someone must have removed something. I have to find a wiring diagram also for this model. I need to find out the idle, low and high, and the timing. Thanks Last edited by dhill3443; 11-03-2006 at 04:46 PM.

11-08-2006, 11:46 PM	#7
dhill3443 Chevy pulling Camper Join Date: Oct 2006 Location: North Carolina Posts: 52	Re: Emissions Routing Thanks for the diagram. I believe most of it will work. I have a few more items on mine I have to figure out especially the box behind the glove compartment. Thanks again.



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