My 2003 blazer dies at stops and only runs up to 10 mph

Asked by Aug 26, 2017 at 11:59 PM about the 2003 Chevrolet Blazer LS 2-Door RWD

Question type: Maintenance & Repair

My blazer turns on but only runs up to 10
mph even when your putting gas and it
completely dies at stops i changed the fuel
pressure sensor and two others that were
marked at my local autozone i switched
everything they said that was marked what
can be wrong and what can i do or change
to fix it

2 Answers

16,555

It could be fuel starvation. You may consider getting the fuel system serviced, changing the filters and checking the injectors for pressure and free flow. That is where I'd start. Next would be electrical / computer input from sensors, the OX sensor, and plug it into an error reader to see if the computer itself can tell you the issues.

20,015

The 03 blazer has a 4.3 v6. They don't have fuel pressure sensors? Are sure you've selected the right vehicle? Also I think a clogged cat is a possibility, the 4.3 shouldnt run at all under about 45 psi of fuel pressure. To test if it's your cat, take an upstream o2 sensor out and go for a test drive. If you see an impovement then it's a clogged cat. The opening from the sensor not being there let's some exhaust flow.

Your Answer

Chevrolet Blazer Experts

  • #1
    Andrew Olsen
    Reputation
    2,110
  • #2
    yetilikesbeer
    Reputation
    1,400
  • #3
    Rowefast
    Reputation
    1,080
View All

Related Models For Sale

Used Chevrolet TrailBlazer
33 listings starting at $3,900
Used Chevrolet Tahoe
3 Great Deals out of 739 listings starting at $3,995
Used Chevrolet S-10
11 listings starting at $1,750
Used Chevrolet Silverado 1500
196 Great Deals out of 10,063 listings starting at $399
Used GMC Jimmy
26 listings
Used Ford Explorer
24 Great Deals out of 1,572 listings starting at $1,799
Used Chevrolet Colorado
26 Great Deals out of 2,075 listings starting at $1,999
Used Ford F-150
640 Great Deals out of 10,352 listings starting at $2,995
Used Chevrolet Camaro
925 listings starting at $13,495
Used Jeep Grand Cherokee
148 Great Deals out of 3,536 listings starting at $3,500
Used Chevrolet Suburban
547 listings starting at $2,871
Used GMC Yukon
4 Great Deals out of 870 listings starting at $6,950
Used Toyota 4Runner
10 Great Deals out of 548 listings starting at $2,254

Used Cars For Sale

2005 Chevrolet Blazer For Sale
5 listings starting at $850

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.