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I have a 1984 Chevy k10. My choke light comes on and oil…

Customer Question
Hi, I have a...

Hi, I have a 1984 Chevy k10. My choke light comes on and oil pressure gauge drops while driving. After I stop and idle the pressure builds and choke light shuts off after 10 mins

Mechanic's Assistant: Have you checked the oil? How old is your oil pump?

Oil is good not sure how old the pump is

Mechanic's Assistant: Are you fixing your MINI yourself? What have you tried so far?

Yes, I have looked at vacuum lines

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Its cold out, and Choke seems to stay open

Submitted: 6 months ago.Category: Chevy
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Answered in 15 minutes by:
12/28/2017
Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago
Tim's Auto Repair
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Satisfied Customers: 16,246
Experience: Have owned a repair shop for 25 yrs.
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Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago

what engine do you have?

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Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago

does it do this when the engine is hot or cold?

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Customer reply replied 6 months ago
305 engine is warm. Choke shuts off and gauges are normal upon start up. When I get a few minutes down the road oil pressure gauge drops, choke light goes on and loss of power. still driveable but nothing to get up a hill
Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago

does the engine rattle/knock when it does this?

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Customer reply replied 6 months ago
not really, Ide say it sputters
Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago

has any work been done on the engine lately?

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Customer reply replied 6 months ago
last year, new vacuum lines, EGR, distrubutor, wires plugs, filters, etc. routine maintenance is standard here. this issue is perplexing me
Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago

ok

i think you may have two problems here..

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Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago

sense the oil pressure does drop,,the first thing you need to do is to rule out a real oil pressure problem...connect a mechanical oil pressure test gauge and check it...

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Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago

as for the choke light,,i think the choke isnt coming/turning off.

you need to check the choke on the carb,,it should be wide open after 8 minutes +/-..the problem may be that the choke is just sticking or you arent getting power the the heating coil on the side of the carb

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Customer reply replied 6 months ago
should it be wide open after 8 mins at 5-10 degrees outside?
Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago

sense you do have these problems at the same time and if the oil pressure is good.,check the wire haness.it is possible that the wires in the harness is shorting together[if so,that can be really hard to find]

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Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago

yes,,the heating coil should open it after a little while

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Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago

If you are satisfied with my answer, Please Rate my answer by clicking the rating button so I can get credit for my work. I’m not always going to be giving you good news, so please don't let this stand in the way of you accepting my answer. .it does not cost you more money and we will still be able to communicate, ,.please understand, i can not see, hear or touch the vehicle and only know what you tell me. Bonuses and positive feedback are appreciated.. if you are not satisfied with my answer, please do not leave bad feedback ,i will gladly opt out and let another expert handle the question. .if i have sent any diagrams, please print them. .sometimes you may need to right click the image [,then save picture as]to save it to your computer so you can open it with your picture program...Please ask if you need more help.

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Customer reply replied 6 months ago
wiring harness on the carb/choke?
Customer reply replied 6 months ago
What about a short? any thoughts on a ground being loose?
Chevy Mechanic: Tim's Auto Repair, mechanic replied 6 months ago

i wouldnt think it to be a ground sense we know it has a good enough ground to start the engine

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