Oil Peessure dropping very low when sitting at stop light.

25

Asked by Mar 27, 2017 at 08:29 PM about the 1989 Chevrolet Corvette Coupe RWD

Question type: Maintenance & Repair

When I stop in my 89 at a stop light.  The temp immediately jumps to above 210
to 225.  When this happens my oil pressure drops to 4-6 on gauge. Cold it is at
50+, I have replace oil pump with a melling high volume/high pressure pump
and no change.  I even tried a 165 thermostat, no joy. Any ideas?

4 Answers

8,875

Your problem is not the pump. The engine has internal wear, either rod or main bearings have large clearances and it gets worse as the oil heats up, because oil looses viscosity when hot. Replacing the thermostat with a colder setting will help a little but once you ramp speed up, oil pressure drop pressure again. How many miles on it?

103,385

You may have a worn engine but I would first have the oil pressure checked with a mechanical gauge so that you know for sure what is going on. The problem might just be a bad oil pressure sending unit.

64,135

What grade oil are you running in it?

103,385

Bob, You lost the cool sunglasses?

Your Answer

Corvette

Looking for a Used Corvette in your area?

CarGurus has 15,517 nationwide Corvette listings starting at $3,900.

ZIP:

Chevrolet Corvette Experts

  • #1
    John Carson
    Reputation
    2,760
  • #2
    Vincent Parker
    Reputation
    1,960
  • #3
    Tom Demyan
    Reputation
    1,560
View All

Related Models For Sale

Used Chevrolet Camaro
224 Great Deals out of 28,922 listings starting at $3,900
Used Ford Mustang
270 Great Deals out of 37,082 listings starting at $2,150
Used Porsche 911
69 Great Deals out of 5,013 listings starting at $11,900
Used Ford F-150
2,344 Great Deals out of 215,477 listings starting at $1,300
Used Mercedes-Benz SL-Class
65 Great Deals out of 3,150 listings starting at $3,500
Used BMW 3 Series
833 Great Deals out of 32,432 listings starting at $995

Used Cars For Sale

2018 Chevrolet Corvette For Sale
8 Great Deals out of 2,264 listings starting at $46,306
2017 Chevrolet Corvette For Sale
21 Great Deals out of 2,882 listings starting at $42,949
2016 Chevrolet Corvette For Sale
9 Great Deals out of 869 listings starting at $38,900
2015 Chevrolet Corvette For Sale
3 Great Deals out of 618 listings starting at $35,995
2014 Chevrolet Corvette For Sale
626 listings starting at $33,250

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.