Question about GMC Envoy

1 Answer

When I start my 2002 envoy, it will not stay started. What can cause this problem?

I just put on an o2 sensor and a coil pack

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • GMC Master
  • 2,185 Answers

If it stalls in 5 seconds or less, read thru this link.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on Feb 13, 2012

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

tripletauto
  • 1450 Answers

SOURCE: 2003 envoy o2 sensor

Are you having a problem with vehicle?

Posted on Nov 11, 2008

  • 318 Answers

SOURCE: P0420 and P0430

The AF sensors are uupstream and the O2 down stream. The car' s computer tests them and it is saying your cats are bad. If you have a scan tool you could look at the data and see what the sensors are seeing. The Af sensors are the ones that control the fuel ratio in the car while the O2's just watch. AF's would be the one to change but there is no garuatee that the codes won't come back.

Posted on Sep 25, 2009

  • 20 Answers

SOURCE: 2002 GMC Envoy Coil Packs / Coil Module Assembly's going bad

swap it with another and check the code again to ensure that it is coil pack 3. This car doesn't have adiquate sensors to diagnose this properly and may indicate the wrong coil. Yes this is comon, its happened to me and I have the same make and model.

Posted on May 30, 2010

  • 462 Answers

SOURCE: 02 sensor p0136 and cylinder misfire p0300

Most likely you do not have bad O2 sensor or coil sience you have P0300 code.
Check for vacuum leaks first , this is very common problem(vacuum leak) , lean mixture will cause misfire. I'm tallking about V6 engine , 4cyl have same problems but for misfire it may have bad coil (they under recall now).
Also check condition of air mass sensor , if it's dirty ,
buy air flow sensor cleaner and clean it according to user manual on the can.(air mass sensor can cause
O2 sensor code)
Check vacuum hose to fuel pressure regulator.
There are many more things to check , but that for mechanic shops after you try this.

Posted on Jun 10, 2010

melvi_99
  • 387 Answers

SOURCE: O2 sensor location for 2002 Ford Focus Sedan

to make you clear where does the oxygen sensors where is........... some have four, three or two, all O2 SENSORS ARE LOCATED AT EXHAUST PIPE. before and after catalytic converter,

Posted on Jul 31, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Service engine light flashs when accelerating to speed over 65mph.


Flashing check engine light means that the catalysator can be damaged. There is most probably something wrong with the O2 sensor(s). Did you check for any fault code set in the PCM?

Aug 12, 2014 | 2002 Jeep Grand Cherokee

1 Answer

Changed spark plugs now no spark 2003 envoy


Coil packs was the problem in the first place. When a spark plug misfires, the high voltage goes no where and the coil starts to deteriorate. After prolonged misfire the coil will not make the hi voltage necessary to fire the plug. Replace the coil packs.

Jul 07, 2014 | 2003 GMC Envoy

1 Answer

2002 trailblazer starts then dies immediately


Usually a stalling problem in hot weather is caused by an electrical part getting overheated such as a coil or a relay, or a fuel problem.
I doubt the O2 sensor would cause it to stall that quick. And if a sensor fails it should turn on the warning light.
You might want to have the computer scanned for codes even tho the light has not come on.
How many times do you have to start it before it keeps running ? Will it stay running if you open the throttle ?

Jul 31, 2012 | 2002 Chevrolet TrailBlazer

1 Answer

My 2002 envoy has a miss that just started==was driving on the freeway for about 40 miles @70 pulled n a station to get a drink ==started it back up and it started missing like a dead plug or coil i...


2002 Envoy sle 4.2 L straight 6. Random misfire(PO300). After erasing codes for several days, I finally took my car on the highway and ran it at high speed(70+) for about 4 to 5 miles. Check engine light came on as before but this time it gave me(PO305). Random misfire cylinder 5. So I switched coil 5 with coil 2. Went back out on the highway and repeated as before. This time it gave me(PO302). This was telling me I had a bad coil. Replacing one coil pack solved the problem. The professionals told me low fuel pressure would not give me random misfire, but rather a O2 code because the engine is running lean. Thank you------------------------------------ thank you very much.

Jun 26, 2012 | 2002 GMC Envoy

1 Answer

2002 Isuzu Axiom motor backfiring runs rough put new front O2


common causes for back firing, low fuel pressure, or restricted injectors, breakdown of secondary ignition coil, internal ignition coil arching, or a dead spot in throttle position sensor.

Jul 20, 2010 | 2002 Isuzu Axiom

1 Answer

2002 GMC Envoy Coil Packs / Coil Module Assembly's going bad


swap it with another and check the code again to ensure that it is coil pack 3. This car doesn't have adiquate sensors to diagnose this properly and may indicate the wrong coil. Yes this is comon, its happened to me and I have the same make and model.

Feb 15, 2010 | 2002 GMC Envoy

1 Answer

Obd2 code p0300 on mazda protege 2002


Just had one of these with a maxima, the code is multiple random misfire, when a misfire occurs, to start is do the basics, replace the plugs, check fuel pressure, clean throttle body, and coolant is topped up. also I have seen if the O2 sensor is not working correctly is can cause a misfire, you will need a scan tool to look at what the O2 sensor is doing, o rby back probing the sensor (don't damage the O2 sensor wires). If it wires replace them as well, if it has coils they usually dont give that code if one fails, it will pinpoint that a certain coil if one fals.

Oct 02, 2009 | 2002 Mazda Protege

1 Answer

Missing in every gear..


you have to see if the coil pack fire up do you have spark coming out of the coil pack cylinder 2 never mind the other code the missing cylinder make the other sensor malfonction check if you have spark coming out of the coil pack if not change the coil pack if you have you spark check the compression let me know pierre please dont rate right away we work together to fix our problem because i whant you to get our car running good and i whant a fixya anything else is bad for me thanks pierre

Feb 25, 2009 | 2002 Mitsubishi Lancer

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

43 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75797 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

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

Answer questions

Manuals & User Guides

Loading...