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07-28-2017, 06:08 AM | #1 |
F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,208
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1988 1500 4X4 5.7 automatic, 119,000 miles....low oil pressure?
My daughter just bought a beautiful, original, low mileage 1988 Chevy shortbed 4X4 with a 350/automatic. She is getting ready to driving home (750 miles) and sent me a picture of the oil pressure gauge and the light that come on at a stop light when pressing the brake hard. I've never owned a truck like this and was wondering if they have gauge issues? I hope!
Dang, sorry for the gigantic picture |
07-28-2017, 06:11 AM | #2 |
F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,208
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Re: 1988 1500 4X4 5.7 automatic, 119,000 miles....low oil pressure?
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07-28-2017, 06:54 AM | #3 |
Registered User
Join Date: Jun 2011
Location: Bradenton, Fla.
Posts: 1,100
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Re: 1988 1500 4X4 5.7 automatic, 119,000 miles....low oil pressure?
Oil gauge sender located behind distributor. I have an '88 also & my gauge is inconsistent.
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'70 GTO Midnight Blue '88 GMC Sierra SLE 392,000 miles-(2018) sold to Classic car shop in Germany. '93 Cadillac STS Black '93 Mercedes SL 500 Teal '86 Yamaha FZ750 - 15,000 RPM '86 Yamaha FJ1200 - Criminally Fast 2016 Ferrari 488 GTB, I drive it - don't own it. '05 GMC Yukon XL , SLT 4wd ( just purchased 2018) |
07-28-2017, 07:11 AM | #4 |
F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,208
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Re: 1988 1500 4X4 5.7 automatic, 119,000 miles....low oil pressure?
Thanks mountie, I'm sure hoping it's just a gauge issue. I wont be able to check it till she gets home.
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07-28-2017, 01:51 PM | #5 | |
Registered User
Join Date: Jun 2011
Location: Bradenton, Fla.
Posts: 1,100
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Re: 1988 1500 4X4 5.7 automatic, 119,000 miles....low oil pressure?
Quote:
>>>> the last time the oil filter was changed?>>>>>>
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'70 GTO Midnight Blue '88 GMC Sierra SLE 392,000 miles-(2018) sold to Classic car shop in Germany. '93 Cadillac STS Black '93 Mercedes SL 500 Teal '86 Yamaha FZ750 - 15,000 RPM '86 Yamaha FJ1200 - Criminally Fast 2016 Ferrari 488 GTB, I drive it - don't own it. '05 GMC Yukon XL , SLT 4wd ( just purchased 2018) |
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07-28-2017, 03:29 PM | #6 |
Junior Member
Join Date: Nov 2005
Location: new york
Posts: 226
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Re: 1988 1500 4X4 5.7 automatic, 119,000 miles....low oil pressure?
Sounds obvious but make sure it has the correct amount of oil in it, i only say this because of the hard braking might be emptying the sump. gluck
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07-28-2017, 03:42 PM | #7 |
F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,208
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Re: 1988 1500 4X4 5.7 automatic, 119,000 miles....low oil pressure?
Thanks y'all, oil is full and was recently changed.
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07-28-2017, 03:54 PM | #8 |
Registered User
Join Date: May 2006
Location: Santa Maria, Calif.
Posts: 781
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Re: 1988 1500 4X4 5.7 automatic, 119,000 miles....low oil pressure?
Nope. Gauge sender is at the rear of the driver's side exhaust manifold. Oil sender switch is behind the dist. I have this same problem and I know my engine's still in great shape internally.
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1989 K1500 Chev. EC Original owner; some of the aftermarket parts I've installed are Borla headers, Hypertech chip, Edelbrock water pump, and a Stillen rear disc brake conversion kit. 2009 Hummer H3T 3.7L 5M (sold) 1997 K2500 Chev. EC 7.4L/ 4L80E 2018 Dodge Ram 2500 HD R/C |
07-28-2017, 05:42 PM | #9 |
F’B’D guy
Join Date: Feb 2004
Location: Texas/Maine
Posts: 2,208
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Re: 1988 1500 4X4 5.7 automatic, 119,000 miles....low oil pressure?
Once again thanks y'all, my heart is at ease...
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07-28-2017, 08:03 PM | #10 |
Registered User
Join Date: Jan 2017
Location: wheaton IL
Posts: 659
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Re: 1988 1500 4X4 5.7 automatic, 119,000 miles....low oil pressure?
yeah, my 1990 was the same way for a few years. pretty much the exact same pressure at idle. i didnt think anything of it as ive had a few older 80s chevys that were the same way, had a old k5 that would drop down to zero after like 20 minutes of driving it.
what i did in my 1990 was put a bottle of lucas oil treatment in it and it bumped the oil pressure up. so who knows if it just cleaned out the sending unit or actually cleaned out the oil passages. but i idle at like 30-45psi depending where the engine temp is. |
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