Question about 2002 Chevrolet Avalanche

2 Answers

Service engine light on. tends to want to shut down, but doesn't

I got the service engine light on and tends to want to shut down. I did a tune up. wires, plugs, pcv, fuel filter only. I still have the engine light on and still same problem. what can it be?

Posted by on

  • donnellevans Dec 17, 2008

    I have the same problem it is blowing black smoke and running poorly as well what can be done to solve the problem?

  • stgmoose Dec 21, 2008

    My 02 avalanche has pretty much the same problem, engine light comes on and then no smoke, yet... but when i in idle it shakes and when i am going up a hill, it looses power? THoughts?

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 405 Answers

There are a number of things that can cause this. If you do not have an obd2 tester, go tto Orielly's or Autozone and they will read the codes for you. After you know the code if you will post it I can help you solve your problem. It is free to have them read your codes for you.

Posted on Dec 15, 2008

  • 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.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 334 Answers

An ECT sensor has these symptoms
* Very poor fuel economy
* A no start condition
* Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring
this is what it sounds like
God Bless Greg

Posted on Dec 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

Engine starts then shuts down after a few seconds, re start then same thing


Tune up,wires,coils,fuel and air filters,dirty throttle body.

Jan 22, 2015 | Cars & Trucks

1 Answer

My jeep after it sits awhile it tends to spit and pop when accelerating


just driving? never starting>
tune up time.
does it hot and cold engine.
tune it up. do the full 60k tuneup in the operators guide. lost that?

Feb 06, 2014 | 1998 Jeep Grand Cherokee

1 Answer

Summer/winter switch stuck


Doesn't this car have an onboard dash light to show Winter Mode? Sounds more like it's an engine or transmission issue. Tune up? Trans service?
Is the CEL (check engine light) on?

GL,
Td

Oct 10, 2012 | 1997 Mercedes-Benz C-Class

1 Answer

1995 buick lesabre vehicle has no power when going up hill and burns alot of gas


Hi RJ,

If the shop that performed the tune up didn't put the car on diagnostic test equipment - they may not have noticed a problem; as normal engine speeds needed for a tune up are seldom greater than idle.

Sounds to me like you've got a problem with the emissions system - or one of the sensors that provide information to the on board computer. This could be anything from clogged catalytic converter to a failed oxygen sensor.

Generally, you'd see a "Check Engine" or "Service Engine Soon" indication on the dashboard. Check to see if the bulbs work by shutting the car off, then turn the key from off to the start position - slowly. One position should give a "bulb check" - meaning power is applied to the indicator lamps in the dashboard to show you that the bulbs work. Note any that do not come on (you might need to consult your owner manual to learn what & where these lamps are). You should see the Oil, Temperature, Brake , etc. lights come on - along with the "Check Engine" / "Service Engine Soon" light (among others). The "Check Engine" / "Service Engine Soon" lights are usually yellow - while the others are red. If the light does not come on, you may be unaware of a problem because the light doesn't work as expected.

I'd return to the shop that performed the tune up and explain the symptoms and see if they can help. It may very well be something that a tune up can not fix.

Lastly, when you have a problem with the car - you might be better explaining to the service provider what the problem is - and let them figure out the cause; rather than doing the diagnosing yourself and assuming a tune up will fix the problem. When you do that, the provider simply does what you've asked. They know nothing of the problems you're experiencing.

I hope this helps & good luck!

Aug 23, 2012 | 1995 Buick LeSabre

1 Answer

My 2003 gt engine shakes and feels like its going to shut off


check all vacuum lines and especially the one behind the throttle body to make sure none are off and also check the EGR valve and if it has not had a tune up in awhile check the coil pack over the spark plugs

Feb 01, 2009 | 2003 Ford Mustang

1 Answer

Service Engine Soon Light comes on but doesn not stay on.


If your battery starts turns the engine over, it is doing it's job well. It sounds like your engine computer is not liking the cold engine. If it has been a while since a tune up, it would not hurt to go ahead and do it, but if it runs ok after it warms up, I sould not worry about it a whole lot. When the engine is cold, the egr valve and other things that are made to limit polution tend to stick and give the computer bad readings. A serious tune up may fix it, and I think should, but you MAY still be in the same boat! That does not FIX it for you, but should ease your mind on the light.

Dec 21, 2008 | 1999 Chevrolet Silverado 1500

1 Answer

Check engine light


check transmission sensors, O2 sensors may need cleaning or replaced, also make sure your temp is not going up when you step on the gas? If so its the trans.

Jul 28, 2008 | 1997 Dodge Ram 1500 Club Cab

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

Related Topics:

85 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

60667 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

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

Answer questions

Manuals & User Guides

Loading...