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 4 Door LS 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

108,165

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...

73,065

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

73,065

Wise decision...

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

73,065

Good deal, glad its fixed...

Your Answer

Blazer

Looking for a Used Blazer in your area?

CarGurus has 14 nationwide Blazer listings starting at $1,750.

Postal Code:

Chevrolet Blazer Experts

  • #1
    Andrew Olsen
    Reputation
    2,030
  • #2
    yetilikesbeer
    Reputation
    1,330
  • #3
    Rowefast
    Reputation
    1,030
View All

Related Models For Sale

Used Chevrolet TrailBlazer
6 Great Deals out of 51 listings starting at $700
Used Chevrolet Tahoe
5 Great Deals out of 639 listings starting at $6,871
Used Chevrolet S-10
12 listings starting at $3,800
Used Chevrolet Silverado 1500
174 Great Deals out of 10,673 listings starting at $2,500
Used GMC Jimmy
15 listings starting at $1,980
Used Ford Explorer
45 Great Deals out of 1,353 listings starting at $3,900
Used Chevrolet Colorado
14 Great Deals out of 1,317 listings starting at $1,999
Used Jeep Grand Cherokee
97 Great Deals out of 2,701 listings starting at $1,871
Used Ford F-150
450 Great Deals out of 9,038 listings starting at $922
Used Toyota 4Runner
6 Great Deals out of 410 listings starting at $5,995
Used Jeep Wrangler
88 Great Deals out of 1,587 listings starting at $2,488

Used Cars For Sale

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.