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#1 |
Registered User
Join Date: Feb 2008
Location: cocoa florida
Posts: 183
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o.k. I'M STUMPED CHOKE LIGHT ISSUE
I could use some help
my 82 is giving me fits in this cold weather ,ok but for florida the 40's is cold choke light stays on 12 volts at choke terminal on carb truck runs like crud when cold truck idles really high all the time even when warm oil pressure on gauge says 35lbs at idle oil level is good As i understand it the choke circuit runs through the oil pressure switch so it only works when engine is running and low oil level or pressure can cause open circuit, choke light to come on and no voltage to choke power lead BUT I have a choke light on and voltage at the choke terminal I realize I just have something backwards in my head or am missing something obvious but this is my daily driver and I'm out of ideas any hep would be welcome MArk
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the avatar was my 62 I owned for 27 years 84 chevy short short bed black 84 gmc long bed copper/ buckskin 88 chevy k5 blazer white Life's short make the most of it Mark aka impalmark |
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#2 |
Registered User
Join Date: Oct 2009
Location: Buhl, Idaho
Posts: 1,438
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Re: o.k. I'M STUMPED CHOKE LIGHT ISSUE
check to make sure you dont have any vacume leaks of any sort. mine did the same thing. but my choke is disconnected.
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86 c30 crew cab dually 454/400 4/6 drop SOLD 1-8-11 1981 chevy K10 short Bed Scottsdale SOLD 10-26-2020 67 GMC Stepside Straight six/3 on the tree "The Peach" 2020 Silverado Double Cab LT Z71 5.3 8 speed Daily Driver K10 build http://67-72chevytrucks.com/vboard/s...d.php?t=671934 The Peach build http://67-72chevytrucks.com/vboard/s...d.php?t=733903 ![]() |
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#3 |
Registered User
![]() Join Date: Jun 2007
Location: lemoore ca
Posts: 126
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Re: o.k. I'M STUMPED CHOKE LIGHT ISSUE
Hey Mark I know you have 12 volts to the choke heater but is it actually working enough to cause the choke to come off when the engine warms up?
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#4 |
Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: o.k. I'M STUMPED CHOKE LIGHT ISSUE
my guess is that the carb is stuck on high idle. once teh truck it up to normal operating temperature, try disconnecting the choke hot lead, and wire the choke flap fully open. also some pics of your carb before and after it's warmed up will help as well.
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Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
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#5 |
Registered User
Join Date: Feb 2008
Location: cocoa florida
Posts: 183
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Re: o.k. I'M STUMPED CHOKE LIGHT ISSUE
I will check it all again in the morning when cold
just for informational my radio is suddenly blowing the fuse for no reason I can see . Don't think it could be related but throwing it out there this is a 90k mile all stock to the last vacuum hose original any guesses would be welcome p.s. dont see any vacuum leaks or bad hoses but it's a spaghetti factory under there the choke is not working correctly but it runs differently depending on the day and I'm not wanting to throw a bunch of parts at it guessing Mark
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the avatar was my 62 I owned for 27 years 84 chevy short short bed black 84 gmc long bed copper/ buckskin 88 chevy k5 blazer white Life's short make the most of it Mark aka impalmark |
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#6 |
Registered User
![]() Join Date: Sep 2007
Location: Marietta, Ok
Posts: 246
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Re: o.k. I'M STUMPED CHOKE LIGHT ISSUE
Sounds like raws67 hit the nail on the head.. I would pull your electric choke off the truck and bench test it using a good car battery. Mark the position of the choke tension spring (coil) before and after the battery power is applied. It should move between 1/6 and 1/4 turn, and this should be plenty to pull your choke off fully. If the choke coil tests good then you know you have a power problem, first check the connection at the oil pressure switch (more than likely it is either a bad connection, or has come off.) Lemme know what you find.
also these are all symptoms of the choke not pulling off, and the light being on is more than likely a faulty connection... choke light stays on truck runs like crud when cold truck idles really high all the time even when warm
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87 black silverado swb, tbi 350, 700r4, 3.40 gears. 2.5 drop spindles , 2 inches off stock coils, flip kit out back. cragers with radial ta's... ongoing piddle project! 1970 Olds rallye 350, street strip 403/350 3.73 posi. Looks stock/runnin 12's! ![]() 86 K5- SOLD! |
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#7 |
Gentleman Jim Driver
Join Date: Nov 2002
Location: Poulsbo, WA
Posts: 1,550
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Re: o.k. I'M STUMPED CHOKE LIGHT ISSUE
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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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#8 |
Registered User
Join Date: Feb 2008
Location: cocoa florida
Posts: 183
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Re: o.k. I'M STUMPED CHOKE LIGHT ISSUE
El Gracho
The missing piece I didn't realize the choke terminal wire got power anytime the key is on . just doesn't have enough power to overcome the resistance to move the coil. got it ,now maybe my pea brain can fix it Mark
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the avatar was my 62 I owned for 27 years 84 chevy short short bed black 84 gmc long bed copper/ buckskin 88 chevy k5 blazer white Life's short make the most of it Mark aka impalmark |
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#9 |
Registered User
Join Date: Jul 2000
Location: East Bay,CA
Posts: 298
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Re: o.k. I'M STUMPED CHOKE LIGHT ISSUE
Did you ever get this figured out?
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51 Chevy 3100 Deluxe Cab(SOLD) ![]() 65 **stang 6cyl 70 C10 Long Bed Fleetside(1st truck,thanks Dad![SOLD]) 72 C10 Short Bed Fleetside 73 Blazer 2WD Catalina Blue White Top(Needs Love) 73 Blazer 2WD Work in progress LT1/4L60E 83 Grand National (SOLD) 94 Blazer K1500 Silverado (SOLD) 96 Impala SS All original (NEXT IN LINE 2 B SOLD) 99 Tahoe 2DR, 2WD ![]() |
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