Got the choke working.... with some delima... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mckpaul · 01-21-2003, 07:13 PM

Well, Joe's diagram answered all the questions. But something I didn't consider, I have a oil "gauge". Which means I have both an oil sending unit. and an oil pressure switch. Both the choke AND the sending unit get their operating voltage from the pressure switch. The problem I had was that there was in fact an oil pressure switch on the truck, but the harness connector was slightly smaller and wouldn't stab on to the two terminals on the switch. The switch terminals were slightly farther apart then the wiring harness. It's a newer motor in the truck, so I figured I'd go buy the switch for my year model, but it was the same switch. Of course asking for a switch for a truck with a gauge baffled the guy at the counter. His screen asked if I had a light or a gauge, and the part he first came out with was a one terminal sending unit. Explained the use of the switch and searched different descriptions, but finally bought a switch for a truck with a light.

Had to cut my connector off and use spade lugs. Don't know if they sell a special switch for that purpose, or if my harness connector just got slightly deformed hanging there in the heat not connected. Either way, works great now. Thanks for the input on the other post.

ElGracho · 01-21-2003, 08:15 PM

Well, I'm not surprised that the droids at the auto parts store couldn't help you. The switch down by the oil filter is different than the one used for a truck with warning lights only. I'm guessing you would have to go to a dealer to find it. (Or better yet, a wrecking yard.)

**swervin ervin** · 01-21-2003, 08:27 PM

Hmmm...strange. I bought one for my 85 from Advance. Fit like a top. On another note, what year did they move the mounting location from the oil filter to up top, beside the distributor? My switch and sending unit both are up top, mounted in a brass tee.

ElGracho · 01-21-2003, 08:37 PM

I don't know. My uncle's 82, my 84 and my 86 all had them right above the oil filter.

01-21-2003, 07:13 PM	#1
mckpaul Registered User Join Date: Dec 2002 Location: Houston Posts: 300	Got the choke working.... with some delima... Well, Joe's diagram answered all the questions. But something I didn't consider, I have a oil "gauge". Which means I have both an oil sending unit. and an oil pressure switch. Both the choke AND the sending unit get their operating voltage from the pressure switch. The problem I had was that there was in fact an oil pressure switch on the truck, but the harness connector was slightly smaller and wouldn't stab on to the two terminals on the switch. The switch terminals were slightly farther apart then the wiring harness. It's a newer motor in the truck, so I figured I'd go buy the switch for my year model, but it was the same switch. Of course asking for a switch for a truck with a gauge baffled the guy at the counter. His screen asked if I had a light or a gauge, and the part he first came out with was a one terminal sending unit. Explained the use of the switch and searched different descriptions, but finally bought a switch for a truck with a light. Had to cut my connector off and use spade lugs. Don't know if they sell a special switch for that purpose, or if my harness connector just got slightly deformed hanging there in the heat not connected. Either way, works great now. Thanks for the input on the other post. __________________ Paul 1984 Chevy C-10 LWB/305

01-21-2003, 08:15 PM	#2
ElGracho Gentleman Jim Driver Join Date: Nov 2002 Location: Poulsbo, WA Posts: 1,553	Well, I'm not surprised that the droids at the auto parts store couldn't help you. The switch down by the oil filter is different than the one used for a truck with warning lights only. I'm guessing you would have to go to a dealer to find it. (Or better yet, a wrecking yard.) __________________ Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed

01-21-2003, 08:27 PM	#3
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	Hmmm...strange. I bought one for my 85 from Advance. Fit like a top. On another note, what year did they move the mounting location from the oil filter to up top, beside the distributor? My switch and sending unit both are up top, mounted in a brass tee. __________________ Mike 1985 Chevy C-10

01-21-2003, 08:37 PM	#4
ElGracho Gentleman Jim Driver Join Date: Nov 2002 Location: Poulsbo, WA Posts: 1,553	I don't know. My uncle's 82, my 84 and my 86 all had them right above the oil filter. __________________ Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed

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