Question about 2002 Chevrolet Blazer

1 Answer

Fuel control problem??

I've been chasing a problem with my 2002 Blazer for 6 months. I'm $4,000+ poorer and I still have the problem that is getting progressively worse.

It started out with a miss every now and then while I was driving on the highway. Then the problem started when I would start the car for the first time of the day. The car lurches along for various lengths of time. Usually for the first 2 or 3 errands in town and then it levels out. Usually clears up after I reach highway speeds and won't have the problem for the rest of the day. But the next morning, we start all over. Another thing, when I start the car and it is warming in the driveway, you'd never know there is a problem. It's only when I accelerate. (I can drive the car, but it has a real rough idle at stop lights or long waits, and it lurches along when I drive down the street and I worry that it will quit at any time.)

I have had a complete tune up including plug wires, replaced the fuel filters and fuel pump, replaced a high dollar valve that blends the fuel and air, and I believe the dealer said a rotary cap. It's been to the dealer and several mechanics and no one has been able to isolate the problem. They've told me the above needed replacing to fix the problem, but none of it has. We are now at the point where they tell me that they can't get the car to duplicate the problem and therfore can't repair it.

I'm at my wit's ends and need some help!!!

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 58 Answers

Definately sounds like a fuel management issue...as all the common issues have already been taken care of, i am wondering if maybe you have a programming error in the computerized part of the fuel management sytem. maybe get autozone to do a free error code reading? it may help narrow down your problem further and is free...i would say maybe an electrical issue with the fuel pump, but that doesn't make sense if it goes away when running for a while. has anyone looked into the oxygen sensor? if it is messed up it will cause your fuel management to go weird. hope this helps some! good luck!

Posted on Aug 15, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My 2002 Chevy Blazer won't start?


If you replaced the injector after the plugsthey may be fuel fouled.Pull the plugs and clean them.(you can sandblast them,or use a method I used to use-shoot a little starting fluid on them and use a lighter to burn off the contamination of too much fuel).I can't believe GM kept using this stupid design so long-I remember nearly new Vortec V6s with this same problem in the '90s.

Oct 07, 2012 | 2002 Chevrolet Blazer

1 Answer

2002 Blazer will not start. It fires and sounds like it is going to start every time I turn the key, but will not start. Sometimes it sounds like it starts, but dies immediately. (within 1 or 2 second


if you know its getting fuel then lest talk about spark check the spark plug wires and the spark plugs if you got spark see if your getting air check the air filter if its to dirty it wont start beacuse clean air wont come through

Sep 09, 2012 | 2002 Chevrolet Blazer

1 Answer

2002 chevy blazer codes 443 449 i replaced the maf sensor the vaf sensor on air horn the emmision valve on the engine the vent valve to even tried the gas cap clear codes drove the truck guess what codes...


p0443 is evaporative emission control system, purge control curcuit malfunction, p0449 is emission control system, vent control curcuit malfunction. p0449 is often a filler cap problem on fuel tank. try tightening cap

May 20, 2010 | 2002 Chevrolet Blazer

1 Answer

No power to the fuel pump


of course, check fuel pump fuse and relay to start, next, you need to test the plug at the pump with a test light, if it has power to the pump, the pump is junk, if not, there is a short or break in the circut. that means chasing the wires, a fox and hound is very helpfull with that..........

Jun 29, 2009 | 2002 Chevrolet Blazer

1 Answer

1998 Chevy Blazer kills after a hour on highway after a hour or more it will start , I've had the fuel pump, fuel filter changed and it happened again after a month, I 've had the battery, distributor ,...


You have a short somewhere, sounds like the engine ground. Check the big cables under the hood and under the car. Just brush off the rust with a wire brush and don't forget the cables. Bolt them back up and try it again. There are at least 2 on a 98 blazer depending on where it's made. One from battery to engine, one probably from engine to firewall, and one probably from egine or tranny to the frame. May even be one from battery to frame. So look around. If it's a black cable clean it up.

Apr 26, 2009 | 1998 Chevrolet Blazer

2 Answers

Firing order for v6 chevy distributor


Counter-clockwise on the distributor in the figure...it is 1-2-3-4-5-6....#5 is the blue one and #6 is the purple one then #1 and so on....

f336f66.gif

Apr 03, 2009 | 1995 Chevrolet Blazer

1 Answer

2002 blazer 4 wheel drive hard to start


If the pressure is slow to rise, you should consider changing the fuel filter if it has not been done in the past 30,000 miles.
Next, disconnect a spark plug and check for spark while engine is cranking. Use a spark tester or old spark plug grounded to the engine block.
Let me know.
Regards,

Mar 23, 2009 | 2002 Chevrolet Blazer

1 Answer

Why my 2002 blazer might stall but idels good


Could be throttle position sensor, a air mixture sensor or an oxygen sensor. If oxygen sensor then replace all of them or you will strain the others and then you will have to keep changing out the oldest on like a cat chasing its tail. smile.

Mar 07, 2009 | 2002 Chevrolet Blazer

1 Answer

Blazer runs out of gas at half tank?


defective or missinstalled fuel pump would be my first guess.

Dec 07, 2008 | 2001 Chevrolet Blazer

1 Answer

2002 Fuel pump won't turn on when wet outside


check the fuel pump relay and make sure there is no water leaking through the hood and gettin into the fusebox

Nov 16, 2008 | 2002 Chevrolet Blazer

Not finding what you are looking for?
2002 Chevrolet Blazer Logo

90 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

61168 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

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

Answer questions

Manuals & User Guides

Loading...