'02 Blazer ~ Intermittent Fuel Pump

Asked by Nov 06, 2014 at 11:43 AM about the 2002 Chevrolet Blazer 2 Door LS

Question type: Maintenance & Repair

I have an 02' Blazer 2Door 2WD 4.3L vortec. Great truck - very low miles. Sorry if this
is long, but i want to give all the info - about a month ago the fuel pump went out. She
was showing signs / not starting on the 1st/2nd try and finally wouldn't start. It's a 12
year old pump and I was also that guy trying to make til Friday on a quarter tank - so
no complaints so far. I checked the relay and fuse, all good there - so I bought a new
AC Delco and fuel filter. Drained and dropped the tank, cleaned and dried the tank and
installed the new fuel filter. The pump came with a new pigtail - so I wired in the new
pigtail, attached the hoses and re-attached the tank. Not bad for 6 hours of work ( first
time - don't judge ). She fired right up and ran like a champ / about a week later I
stopped and filled up the gas tank. Next day - no start / no whine from pump / 0 psi at
the schrader valve. Assuming it must be an electrical issue - I dropped the tank and
tested the gray power wire / 12 volts. But to be thorough / in case I made a mistake / I
stripped and re crimped all the connections, heat-sealed the sleeves and wrapped in all
in electric tape. Tested the pump - she hummed like a kitty. Re-installed the tank and
she fired up like a champ. Drove around a couple of days - stopped and filled the tank
with gas. Same thing - wouldn't start right there at the pump. i poured fuel in the intake
- she would start and run until the fuel burned up. no hum from the pump. had it towed
home ... again ... began to siphon my now full tank of fuel to drop it yet again. At about
1/2 way , I tried her and the pump primed and she started right away. For the past two
weeks I have been unable to make it NOT WORK - but i am worried to go very far , less
i be stranded again. on the gauge I get 60 with the key on and 56 running. With the
engine off the pressure holds for quite a long time - well over an hour+. So what would
cause a brand new AC Delco pump to not work only when the tank is full - then start
working when some of the fuel is removed? Anyone else have this issue or have any
suggestions

2 Answers

50

sounds like you bought a bad pump . a They can be bad out of the box . Id return that pump as faulty and try a new one

10

Ya I have seen my uncle's truck he had to 4the first 3 were no good and finally the last one was good it sucks just be thankful you weren't paying someone

Your Answer

Add photo

Related Questions

  • 2001 Blazer TESTING FUEL PUMP 7 answers

    I have a 2001 Blazer with a VORTEC ENGINE WITH NO INJECTORS. Bogs down/stalls. How do I check fuel pump/fuel relay?

    2001 Chevrolet Blazer

    -

    Maintenance & Repair

  • Testing Fuel pump on 01 Blazer LT 1 answer

    Can i test a fuel pump on a 01 Blazer LT without removing it.

    2001 Chevrolet Blazer 4 Door LT 4WD

    -

    Maintenance & Repair

  • fuel pump location 2 answers

    Want to know where the fuel pump is located on the vehicle.

    1999 Chevrolet Blazer

    -

    Maintenance & Repair

  • had to have a electric fuel pump, relay, and fuel filter replace 3 answers

    2000 chevy s10 blazer, car quit on me, come to find out had to have electric fuel pump, fuel pump relay and fuel filter replace. also had to have the car towed

    2000 Chevrolet Blazer

    -

    Maintenance & Repair

  • Chevy blazer 3 answers

    02 Chevy won't start only crank changed the battery fuel pump spark plugs battery and coil all new

    Chevrolet Blazer

    -

    General

Search Chevrolet Blazer Questions

Chevrolet Blazer Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 1,920
#2 yetilikesbeer
yetilikesbeer
Reputation 1,210
#3 Rowefast
Rowefast
Reputation 920
View All

Related Models For Sale

Used Chevrolet TrailBlazer
77 Great Deals out of 4,321 listings starting at $650
Used Chevrolet Tahoe
601 Great Deals out of 27,562 listings starting at $600
Used Chevrolet S-10
5 Great Deals out of 1,408 listings starting at $1,995
Used Chevrolet Silverado 1500
1,948 Great Deals out of 159,904 listings starting at $1,995
Used GMC Jimmy
236 listings starting at $2,295
Used Ford Explorer
741 Great Deals out of 74,284 listings starting at $750
Used Chevrolet Camaro
132 Great Deals out of 35,283 listings starting at $1,995
Used Ford F-150
2,410 Great Deals out of 209,431 listings starting at $895
Used Jeep Grand Cherokee
806 Great Deals out of 69,877 listings starting at $995
Used Chevrolet Suburban
382 Great Deals out of 18,547 listings starting at $1,795
Used Chevrolet Impala
564 Great Deals out of 28,668 listings starting at $1,595
Used GMC Yukon
391 Great Deals out of 16,276 listings starting at $1,800