Question about Chevrolet Suburban 2500

2 Answers

My 96 454 chevy "service engine light" is on. Had it checked and the report said that it was running lean. What to do?

Posted by on

Ad

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Contributor
  • 26 Answers

I can't say for sure but, Check you're psi that you're fuel pump is puting out. It should be around 55-61 Psi but, you can just call pep boys or auto zone etc.. and ask them to be sure. :)

Btw to check you're fuel pump it requires a spec gauge that cost about 20ish dollars.

Check the oxygen sensors output,

I hope this was of some help. :) If i think of anything else i will be sure to let you know. Good luck

Posted on Sep 04, 2009

Testimonial: "THANK YOU, I APPRECIATE YOU TAKING THE TIME TO HELP. I WILL HAVE THESE SUGGESTIONS CHECKED OUT."

  • Jamie Sep 06, 2009

    Sure thing. :) Post up again If you find out what the problem is and if you are going to do it you're self and need help. :) Good luck

×

Ad
  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

What bank is running lean i would first check for a vacuum leak.

Posted on Sep 04, 2009

Ad

1 Suggested Answer

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My 2005 chevy venture check engine light is blinking and engine is running rough


best is to run the fault codes to find which sensors are reporting faults.
having done that fix the faults and then reset the light using the scan tool

Aug 08, 2015 | Cars & Trucks

1 Answer

Engine surge at 60 mph


on flat ground? 60mph.
my guess, is, its running lean.
use a scan tool (real no useless code readers)
and look for closed loopstatus at 60mph. and idle.
if its not going to CL, status, that IS the top symptoms.
and LTFT, (long term fuel trim)
+5% Is typical, +40% is lean.

lean is caused by many things, sorry more tests.
one, is low fuel pressure.

(or under reported, air , for any reasons. MAP or MAF based engines)
under reported, caused, lean.
in closed loop this is corrected.
at wide open throttle on hill if power is low, that might be low fuel pressures , so does it do that?

Jul 08, 2014 | 2006 Suzuki Grand Vitara

1 Answer

Service engine soon light


Disconnecting the battery will not clear the code . Have erase with a scan tool .

Jul 18, 2017 | 2005 Buick LeSabre

1 Answer

2000 chevy silverado ,5.3 liter engine .service engine soon light on so scanned for problem codes ,results bank 1&2 are running lean .what is the cause or problem that needs to be done to fix


Check for loos connections between the intake and the tube from the air filter. Check if the clamp is loose or leaks in the tube which can cause an incorrect reading. Other than that it may be a dirty MAF sensor which can be fixed by spraying carb cleaning or tuner spray in the intake or it may be bad or a bad oxygen sensor;.

Nov 22, 2011 | Cars & Trucks

1 Answer

Went to get emissions done and my service engine light was on. Expectedly car failed. He told me I had to have Bank 2 senor 2 replaced and Bank one Sensor one replaced. Well I replaced the senors but...


Go to the nearest Autozone and do again a code scanning.If the code is reporting lean or rich mixture from O2 sensors, then the problem are not the sensors but something else.

Lean sensor is often caused by vacuum leak. Rich may be given by a defective sensor in air intake or by other causes, like an EGR valve stuck open. Check also fuel pressure to ensure that pump and pressure regulator are OK.

Jul 08, 2011 | Chrysler Sebring Cars & Trucks

1 Answer

Symptons o2 sensors


If your O2 sensors are malfunctioning, the main symptom would be that the Check Engine light will come on. On some vehicles, an O2 sensor circuit shorted to ground can cause a no-start problem.
If the "Check Engine" or "Service Engine Soon" light is on and there is a code for the O2 sensors, I would like to also advise you that many O2 sensor codes are not caused by the O2 sensors themselves. In many cases, the O2 sensors are only REPORTING the problem. for example, a code P0171 "Oxygen Sensor Lean" code is rarely ever caused by the O2 sensor. It is usually caused by a vacuum leak or a failed Mass Airflow sensor (MAF) or Manifold Absolute Pressure sensor (MAP) or a bad fuel injector. In these cases, repairing the real reason that the engine is running lean will fix the O2 Sensor code without replacing the O2 sensor.

Mar 12, 2011 | 2000 Chevrolet 3500

1 Answer

What does it mean when your bank 1 n bank 2 are running lean


A lean bank 1 and 2 is indicating there is not enough fuel being injected to support proper combustion.
Leading causes can include but are not limited to......
1) low fuel pressure or plugged fuel filter.
2) vacuum leak causing lean condition.
3) air intake hose or crank case not sealed properly and bypassing the MAF sensor or the MAF sensor element is dirty.
4) wrong fuel or poor quality fuel used.
Hope this helps. If the Service Engine Soon light is illuminated, there will be fault codes associated the light. Get the vehicle scanned for free at your local Auto Zone or Advanced Auto and report back.

Nov 25, 2010 | 2003 GMC Yukon XL

1 Answer

CHECK ENGINE LIGHT ON , WITH CODE SYSTEM TOO LEAN


Possible failed bank 1 sensor 1 oxygen sensor..

Mar 29, 2009 | 1999 Chevrolet Silverado 1500

2 Answers

99 Chevy truck check engine light running lean on fuel


Sounds like a vacuum leak. try spraying carburetor cleaner or starter fluid around vacuum lines and intake while engine is running if you have a leak engine will speed up when cleaner hits leak.

Jan 21, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Would not pass emissions test. Code suggest too lean or rich.


a lean code can be caused by a vacuum leak check all hoses and intake for leak

Nov 14, 2008 | 1993 Chevrolet Suburban

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

Related Topics:

149 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76109 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8269 Answers

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

Answer questions

Manuals & User Guides

Loading...