Oil gauge is jumping around after coming to a stop. goes from 50psi down to about 40ish then the gauge can jump down to around 25-30psi.,RPM up, the gauge jumps up to around 50psi. no engine noise.

Asked by Feb 01, 2017 at 02:28 PM about the 2004 Chevrolet Blazer LS 4-Door 4WD

Question type: General

as stated above, the gauge will go from about 50psi at running speed down to
about 40ish and does at times pop down t about 20-30ish. the gauge is NOT
smooth in operation but jerky. no oil lose, no engine noises (ticking sounds).
started about a couple weeks ago. maybe oil pressure sending unit getting
ready to die?

6 Answers

116,505

It does sound like that, I would also flush the engine oil and use a cleaner, could be a small clog in oil pump as well...

79,005

I myself are not a fan of flushing an engine. Some cleaners are fast acting and dislodge chunks of build up and plug oil passages, causing more grief. The key is to keep up with the oil changes. I would just replace the oil pressure sending unit, it is possible the one on the engine has gone bad.

Oil is changed every 3000 miles religiously. I am going to change the sending unit this weekend. I talk with a few guys at work in the Bus maint, shop and they all said that the sending unit is famous for what I described. Will let ya guys know next week after I chenge it out. Thanks

79,005

Wise decision...

well, changed the sending unit last weekend and now it works great.

79,005

Good deal, glad its fixed...

Your Answer

Blazer

Looking for a Used Blazer in your area?

CarGurus has 17 nationwide Blazer listings starting at $1,680.

Postal Code:

Chevrolet Blazer Experts

  • #1
    Andrew Olsen
    Reputation
    2,200
  • #2
    yetilikesbeer
    Reputation
    1,490
  • #3
    Rowefast
    Reputation
    1,150
View All

Related Models For Sale

Used Chevrolet Tahoe
5 Great Deals out of 988 listings starting at $7,600
Used Chevrolet TrailBlazer
34 listings starting at $2,995
Used Chevrolet S-10
6 listings
Used Chevrolet Silverado 1500
190 Great Deals out of 12,338 listings starting at $734
Used GMC Jimmy
17 listings
Used Chevrolet Colorado
32 Great Deals out of 2,653 listings starting at $2,432
Used Jeep Grand Cherokee
138 Great Deals out of 3,894 listings starting at $3,499
Used Chevrolet Suburban
5 Great Deals out of 591 listings starting at $8,499
Used Ford Explorer
37 Great Deals out of 1,601 listings starting at $4,995
Used Ford F-150
609 Great Deals out of 9,525 listings starting at $2,500
Used GMC Yukon
4 Great Deals out of 1,116 listings starting at $6,950
Used Chevrolet Impala
158 Great Deals out of 1,114 listings starting at $1,995

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.