Question about 2002 Chevrolet TrailBlazer

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Doesn't seem to be getting fuel. checked release valve by filter and there is fuel pressure but no fuel pressure on the valve up top.Tested and it said cam sensor, replaced and still nothing.

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Do you have at least 60 ft lbs at the little valve on top .
You can't affictly test the pump pressure this way .
Volume would be a better test take off the filter plug a soda bottle on the line from the fuel pump .Turn the key to run see how much fuel in 10 seconds then x it by 6 and that is gal per min.

Posted on Apr 15, 2015

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  • Expert
  • 126 Answers

Possibly the crank sensor it tells the injectors and coils when to fire. Relieve fuel pressure then re pressurize the system if it gets pressure the fuel pump is good at least

Posted on Apr 15, 2015

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Posted on Jan 02, 2017

  • 58 Answers

SOURCE: 2003 Tahoe, 5.3 liter vortec flex fuel. Engine

this is a comon problem on chevy 00-06 models a computer ground ,it seems ok at sight but inside it's just holding a few wires ,get under the car on the driver side passenger there you should find a two ground wire goin to the block a big, and a small ,the small one gets coroded try to fix it and let me know how it goes ok.

Posted on Feb 25, 2010

  • 1 Answer

SOURCE: fuel pressure release

Remove the gas cap, disconnect the battery, locate the fuel pressure test port, connect a fuel pressure gauge with a bleed off valve and drain tube.

Posted on Sep 20, 2008

  • 12 Answers

SOURCE: Fuel pump relay

Fuel pump in back in the gas tank.

Posted on Jan 30, 2009

bitchn65cuda
  • 70 Answers

SOURCE: 1996 s10 2.2 engine starts but idles rough and will not rev up.

Hi! You must be frustrated by now! your code is marking that the O2 sensor is bad in bank 1. Did you replace the O2 sensor that is located  before the catalytic converter?  The S10 has an O2 sensor specially made for that cat. its about 30$ That would explain for your blackened spark plugs; your pc on the car is asking for more fuel. GOOD LUCK!!

Posted on Apr 29, 2009

  • 69 Answers

SOURCE: My 2000 Chevrolet S10 ZR2,

Check the spark wire for the #1 plug. I had one get burned by the header, I would check it for burns or cuts. Sorry I couldnt help more.

Posted on Aug 18, 2009

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