Question about 2000 Chevrolet Blazer

1 Answer

I am getting 02 sensor codes on 2000 gmc blazer with a 3.8 engine. the engine will not start. regulator, relays, and fuses are good. fuel pressure is great. injectors are not injecting, what else can it be? there are no other codes.

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 149 Answers

Did you do a noid light test to see if the injectors are getting a signal from the PCM? If you're not getting a signal, you need to check the cam and crank sensors. They talk to the PCM to control the fuel injectors. There is on some models, an injector fuse in the main fuse box under the hood or in the left kick panel in the interior fuse block.

Posted on Apr 21, 2013

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 1 Answer

SOURCE: 2000 chevy blazer, truck cranks

Does your battery go dead?

Posted on Dec 18, 2008

hawkwindbear
  • 5 Answers

SOURCE: 1987 chevy engine problem

you have to reset base idle see manual at library for procedure

Posted on Jul 19, 2009

  • 5 Answers

SOURCE: 1987 Chevrolet S-10 Pickup1987 chevy s10 2.5l tbi

Check the trottle body postioning sensor...

Posted on Jul 19, 2009

pippall
  • 1486 Answers

SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Posted on Jul 19, 2009

  • 6982 Answers

SOURCE: fuel pressure regulator

Two places to look...if you have separate injectors for each cylinder then regulator should be at the front end of the fuel rail. If you have throttle body injection it is on the throttle body itself.

Posted on Jul 30, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

02 gmc sonoma 4.3 engine starts and runs great for 30 minutes and then stalls like its flooded, if it sets after stalling for 30 minutes and cools able to drive home before starting to stall again. After...


Smell of the oil,to see if the fuel injector(spider)is leaking into the crank case,if so,the intake will have to be removed to repair the problem,oh,and change the oil.

Jul 11, 2010 | 2002 GMC Sonoma Extended Cab

2 Answers

I have a 96 chev blazer it had a leaky fuel line i replaced it it fixed the problem , after a few months it wouldnt start so i sprayed starting fluid and it got me 60 miles now wont start i replaced fuel...


Injector pulsation in control by your E.C.M quade driver none repairable computer just get's replace to fix the problem, good luck. Also one more thing check your E.C.M fuse.

May 14, 2010 | 1996 Chevrolet Blazer

2 Answers

Fuel shut off switch , where is it


Ford had a shut off switch only. It is a saftey design Fors had for decades and no other Car maker has this option as of yet
Yours will have a fuel pump fuse, a relay to the pump. an oil sensor that is runs the fuel pump only upon starting up the engine and shuts off upon when the engine reaches normal oil pressure. When the sensor shuts off the fuel pump relay takes over until the engine is shut off. When you turn the key to the on position you will hear the fuel pump working inside the fuel tank. No need to turn the key to the start position only to the on position. If the pump is not working you have either a bad fuel pump or a oil pressure sensor. If you do hear it pumping for 5 seconds the engine should fire and die out telling you the relay or pump is bad

Apr 17, 2010 | 2000 Chevrolet Blazer

2 Answers

Starts fine, but then bogs out when accelerating, practicaly have to give it no gas and creep up to speed.Doesn't want to go up hills. Just replaced the cpi, fuel filter and fuel pump 3 months ago. Also...


Check the fuel pressure regulator and the EGR valve, I would check the fuel pressure regulator first and go from there. Good luck and keep me posted. Not sure what the pressure should be but thinking it's 62 to 65 PSI upon start up and should drop 5 PSI when engine running, check the vacuum line to the regulator.

Dec 09, 2009 | 1993 Chevrolet S-10 Blazer

2 Answers

My 96 blazer wont start it just cranks but wont start?


A typical engine needs mostly just gas and spark to run (besides air of course)
Sounds like the engine is not getting one or the other.

Fuel goes from fuel pump, to filter, to fuel pressure regulator, to fuel rail, to injectors.
You can test for fuel pressure with key on, at the fuel rail. There will be a test port on the rail that you can put a rag on top and push in the valve to see if there is pressure. (or use pressure tester)
If there is no pressure, check that fuel pump relay is working. (you can use an ohmmeter on relay to see if there is resistance). You can also test power to relay and to the pump with a voltmeter to see if pump is getting power. Or turn key to ON position and listen to see if you hear the pump turn on.

If you have no spark to any cylcinders, the crank shaft position sensor may be faulty which is very common in GM vehicles.

You can use an ohmmeter to test the sensor itself.
You can also get a spark plug tester to see if there is spark to each cylinder.
You can also remove one spark plug, plug back into plug wire, lay on top of engine so spark plug diode is 1/4" away from metal surface. Have someone else turn engine over while you look for spark. Do this to each cylinder.

Nov 16, 2009 | 1996 Chevrolet Blazer

2 Answers

3 bad fuel pumps in 4 days


Yah, I'm thinking weak relay, or faulty pressure regulator for starters. Can't blame the pump, if it isn't getting power to run it. Also make sure ground is good. Filter has been changed.?That's why I would have confirmed power to pump before I pulled the first one out. Check on ( Autozone.com ) for fuel system components, electrical, relays etc that are associated with your vehicles fuel system.

Dec 19, 2008 | 2000 GMC Safari

2 Answers

My truck will not start. i have a new starter, alternator, fuel filter fuel pump, mas, air filter. any other suggestions. its fine once its started. i spay choke spray in it to get started.


I have had similar problems and had to replace the fuel pressure regulator. It's a major expense because it sets below the diaphram in the intake manifold. Ask your mechanic about it, it may be the issue. I would get about 30,000 miles between replacement, I've replace it 3 times since purchasing the 2000 chevy blazer new, first one was under warranty.

Jul 25, 2008 | 2000 Chevrolet Blazer

4 Answers

2000 chevy blazer starting trouble


Ok a couple things could be your problem here.

One: the cheapest way to start narrowing it down is Fuel filter.. its under the driver or passenger side front seats along the bottom.. if your not to savvy go to a auto parts place and ask them for help its a very cheap fix.

Two: Blazers are notorious for what they call a "fuel pressure regulator" failure. inside there is a little rubber bladder that eventually ruputures and will let raw gas into the intake manifold. depending on which engine you have W or TBI your able to replace the part itself. On the W engine you have the replace the whole Fuel injection CPI (central point injection) that's expensive 500 +.. and labor at a shop.

Three: The whole CPI needs to be replaced. Gm are idiots and use plastic tubes to connect to the fuel injectors which eventually like everything plastic on a car fail. and leak into the manifold. that would require a new fuel injection system which is Very expensive.

Four: Injectors needs cleaning or replacing. Eh cheap 40-60 dollar parts.. its a nozzle.. but the catch here is labor at the shop that's what drags the cat in.

Five: 02 sensor & plugs. Your 02 sensor will regulate the flow of air and gas based on what it senses and if its not functional it messes it up and you will encounter rough idle and surging.

Those are the most common thing i have experienced with my blazer and others. There are so many other things that come into play but those are the most common thing that happen to a blazer hope i was a help.

Any questions you can email directly at

Centaur89@Rochester.rr.com

Jul 20, 2008 | 2000 Chevrolet Blazer

Not finding what you are looking for?
2000 Chevrolet Blazer Logo

32 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76673 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8531 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...