Question about 1991 Chevrolet C1500

Open Question

1991 chevrolet 350 code says running lean what sets the check engine light

Posted by Anonymous on

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
  • 14 Answers

SOURCE: Check Engine Light - O2 Sensor - bank 1 running lean

you should have three oxygen sensors on your car, one for each bank of three cylinders; should be towards the Y pipe on each exhaust manifold. Additionally you should have one on the exhaust pipe before the cadilitic converter.

Posted on Nov 20, 2008

Ad
  • 19 Answers

SOURCE: losing gas mileage, left bank running lean

There are 3 oxygen sensors on your van. Left bank would be the front left. Try replacing it and see if that helps but remember to reset the computer. Where I work the sensor costs a little over $100.00.

Posted on Mar 10, 2009

STEVIE_N_24
  • 147 Answers

SOURCE: CHECK ENGINE LIGHT ON , WITH CODE SYSTEM TOO LEAN

Possible failed bank 1 sensor 1 oxygen sensor..

Posted on Mar 29, 2009

LEFTY64
  • 69 Answers

SOURCE: 1990 CHEVROLET K1500 350 MISSES AFTER WARM

My first thought for a solution of your problem is plug wires. You have replaced some common problem areas for this situation but the plug wires are the most susceptible for causing a miss after engine is warmed up. Try replacing the spark plug wires and let me know what happens.

Lefty64

Posted on Apr 09, 2009

  • 3 Answers

SOURCE: running lean

check fuel pressure and vacume leak arond intake /tbi

Posted on Jul 27, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

1999 chevrolet 1500 with a 5.3 engine engine light on had check had a code in it po171 and po174 sey burning to lean on bank 1 and bank 2 what should i check for did pass inspection


Running lean on both banks? Check intake tubing/hoses for loose clamps and cracks/tears aft of the mass airflow sensor. Could also be a fairly large vacuum leak.

Mar 06, 2011 | 1999 Chevrolet Silverado 1500

2 Answers

I have a 1991 chevy 1500 ext cab with a 350 motor


Check engine light on? Does it run normal driving it? Sounds like a vacuum leak. Check the gasket under the throttle body.

Jun 05, 2010 | 1991 Chevrolet C1500

1 Answer

Engine codes run on 2004 Freestar


Make sure you have all the vacuum leaks repaired.
Disconnect the battery for two mins,codes my clear.
The codes you got are O2 Sensors,because of the vacuum leak,which leaned out the readings and set the codes.

May 03, 2010 | 2004 Ford Freestar

1 Answer

2000 E-350 V-10. P0174 with exhaust fix


Before I even finished reading this i knew you had a clogged cat. If you have fixed everything you mentioned i would lean towards a clogged cat. This is a large reason this code pops up.

To check this you could pull that cat out and drive around and see if the code comes back, make sure to stay away from the police though.

Subikid90

Mar 03, 2010 | 2000 Ford Econoline

2 Answers

1999 Chevy silverado 5.3 engine setting codes p171 p174 already replaced mas air flow and checked for leaks


oxygen sensor failure
P0171 System too Lean (Bank 1) - Read Our Article On Oxygen Sensor Codes For Help With This Generic Check Engine Light Code
P0174 System too Lean (Bank 2) - Read Our Article On Oxygen Sensor Codes For Help With This Generic Check Engine Light Code
hope this is a bit of a push in the right direction ...

Feb 02, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

1992 caprice problems


CHECK CABLES FROM COMPUTER HARNES TO MOTOR DOESN'T TOUCH EXHAUST MANIFOLD
CHECK GROUND CONTACT BETWEEN MODULE INSIDE DISTRIBUITOR AND NEGATIVE OF BATTERY

Apr 28, 2009 | 1994 Chevrolet Caprice Classic

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

1 Answer

Lean bank 1 code 0171 running to lean i change the 02 sensor and maf sensor and check engine light comes back on


Check for a lower intake leak somewhere air is getting in on 1,2,3. Check for leaking vaccum hoses also.

Mar 23, 2009 | 2005 Chevrolet Equinox

Not finding what you are looking for?
1991 Chevrolet C1500 Logo

Related Topics:

18 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8522 Answers

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

Answer questions

Manuals & User Guides

Loading...