Question about Cars & Trucks

1 Answer

I have a 2000 buick century custom 5.1.... my car keeps throwing the evap and catalyst monitor and once I start getting low on fuel my engine light comes on and it shows 2 codes for P0440 evap and P0330 (I think it was) cylinder 6 misfires and it throws two of those exact codes. My coil pack plugs and wires are all replaced and when the lite comes on.. its the only time u can actually feel the misfire in 6....my husband and I work on the cars all the time but when it comes to the exhaust/evap... we're lost with noone willing to help us figure it out!

Posted by on

  • 10 more comments 
  • Heather Dishlacoff
    Heather Dishlacoff Nov 13, 2012

    My husband was going to replace the fuse for my secondary air I believe from under the hood. He said tha there was a 30amp fuse in there but all he had was a 25amp. The car started right up but threw a new code (P0133, P1133) Is it possible it's throwing the code because of the wrong amp fuse?

  • Thomas Perkins
    Thomas Perkins Nov 13, 2012

    Was the 30 amp fuse bad,if so go to Autozone and get one and install and see if the codes appear.Then post the info. back here and we will trouble shoot,your engine is a 3.1,not a 5.1lol.

  • Heather Dishlacoff
    Heather Dishlacoff Nov 14, 2012

    oops my bad! lol n I believe it was bad because it threw the secondary air pump code and when he put the 25 amp in it cleared the code... however, in my opinion I think it drove better on the 25amp. For some reason it just feels a bit more ruff. Right now the car is throwing P0440 and P1133, my husbands code reader also shows another P0440 pending

  • Thomas Perkins
    Thomas Perkins Nov 14, 2012

    Code P1133 is not listed,but apparently Code P0440,is causing your problem.Check this out,does your oil need changing,if so,take to Buick dealer and they also will do a scan check for free and they will tell you what is wrong,I have a Toyota Tundra,I get Toyota Dealer to change oil and they do a complete scan and it's free.So,this is the best way to find out,put 30 amp fuse back in and go get a oil change and what they tell you,then you can make repairs and got it troubleshooted for free.

  • Thomas Perkins
    Thomas Perkins Nov 15, 2012

    Here's the code P1133http://www.engine-light-help.com/buick-c...

  • Thomas Perkins
    Thomas Perkins Nov 15, 2012

    http://www.engine-light-help.com/buick-c...

  • Heather Dishlacoff
    Heather Dishlacoff Nov 21, 2012

    ok as of right now I just have the P0440 code being thrown. As soon as the monitors are reset and you go to look at the codes it automatically shows one evap code pending, Once the evap monitor is able to run it's cycle it throws the evap code and yet again another pending evap. I'm not completely sure whats wrong. I can also say that now my fuel gauge fluctuates every now and then. I do believe I have a small fuel leak up front. Also my husband said that my intake manifold was rigged for whatever reason. I do have a bad power steering pump as well because whoever replaced it last appariently missed a step. Also seems like my car is starting to bog down at times again (especially on cruise control).

  • Thomas Perkins
    Thomas Perkins Nov 21, 2012

    Hi ya'll,here's a link to the code.

  • Thomas Perkins
    Thomas Perkins Nov 21, 2012

    http://www.obd-codes.com/p0440

  • Heather Dishlacoff
    Heather Dishlacoff Nov 21, 2012

    Is there anything I said that leads more towards one thing rather than the other? I'm not completely used to the emission system yet. When it comes to the valves, sensors, or solenoid, I'm not too sure on how to tell it is bad

  • Heather Dishlacoff
    Heather Dishlacoff Nov 21, 2012

    What I don't understand is if there are other codes that are thrown say for emission leak or solenoid bad, why is my car not throwing another code to break it down a little better?

  • Thomas Perkins
    Thomas Perkins Nov 22, 2012

    Try using another Scan tool,Autozone and other auto part store use a scan that gives you many causes for the trouble code,not good there,but there are some scan tools that will pin point the problem,and the dealer has them.Here's what I would do,go to dealer and get a oil change,they will scan your vehicle and find problem and it's free,then you will know and decide to fix yourself or let them do it,cost to find out,a oil change.I take my Toyota Tundra to dealer to get oil change,they always scan for free,told me once my bulb in the license plate socket was burnt out,they replaced,cost was 1.00,but ask them if they scan before getting a oil change,all dealers usually do,there way of making money.

×

Ad

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.

  • Cars & Trucks Master
  • 14,362 Answers

P0330 Knock Sensor #2-Circuit Malfunction (Bank #2)P0440 Evaporative Emission Control System Malfunction.http://www.autozone.com/autozone/parts/Duralast-Knock-Sensor/2000-Buick-Century/_/N-je30qZ93xni?itemIdentifier=136530_0_0_

Posted on Nov 09, 2012

Ad

5 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
  • 15 Answers

SOURCE: Misfire of cylinder 2 & 5 on 04 Buick LaSabre Custom

Ok this may be something smal that may be simple to fixs; your plugs are in the wrong cylinder?

Check Your gap size .060 (In thousandths of an inch)

Im not sure of the size of engine please look below for your make?

82c1f61.jpg

Fig. 3.8L VIN 1 Engine Firing order: 1-6-5-4-3-2 Distributorless ignition system


756ae24.jpg
Fig. 3.8L VIN K Engine Firing order: 1-6-5-4-3-2 Distributorless ignition system


21520e9.jpg
Fig. 3.8L (VIN 1 and L) Engines Firing order: 1-6-5-4-3-2 Distributorless ignition system
321b2dc.jpg
Fig. 3.8L (VIN K) Engine Firing order: 1-6-5-4-3-2 Distributorless ignition system
I hope that this help!

Posted on Jun 08, 2009

garputo22
  • 127 Answers

SOURCE: random misfire code changed plugs,coil pack,wires

Random engine misfire is very hard to diagnose as there are alot of things that can cause this. I would check the PCV system first replace the pcv valve and inspect all lines going to the pcv valve for leaks. The other thing to do is replace the gas cap as this can also cause the code. Most likely cause is a fault in the emissions system.

Posted on Aug 08, 2009

  • 144 Answers

SOURCE: 2004 Audi A4 misfire

it is always a good idea to stay with o.e.m parts and yes there is updated parts in the newer coils. and yes the M.A.F will also cause misfire faults but will not make check engine light flash or make car shake and shudder. also check you wire harness going to your coils make sure your ground wires are not cracked. That could be the main culprate. good luck hope this helps

Posted on Sep 03, 2009

johnjohn2
  • 5763 Answers

SOURCE: Engine code states cylinder 2 misfire. Replaced

sounds like a bad injector, just connection at the injector, also check for leaks at intake, one more thing , do a compression test on that cylinder start there, good luck.

Posted on Oct 24, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Evap System, 2003 Buick Century, PO446 , Engine light on


P0446: Evaporative Emission System Vent Control Circuit
Probable cause:
  1. Sensor or solenoid faulty
  2. Connector terminal contact damaged or corroded
  3. Wire harness fault. Check for correct voltage, open, short to ground or short to voltage
  4. Control unit software needs updating
  5. Powertrain or Engine Control Module faulty
  6. Vacuum leaks, damaged hoses or incorrect routing
  7. EVAP system - Check fuel cap, canister, valves or components

Jun 08, 2017 | 2003 Buick Century

1 Answer

2000 Town Car - 3 codes (P0307 - I believe misfire on #7) but P0430 & P0442 I don't know


P0430 - Catalyst System Efficiency Below Threshold (Bank 2) Indicates Bank 2 catalyst system efficiency is below the acceptable threshold.
  • Use of leaded fuel
  • Damaged HO2S
  • Malfunctioning ECT
  • High fuel pressure
  • Damaged exhaust manifold
  • Damaged catalytic converter
  • Oil contamination
  • Cylinder misfiring
  • Downstream HO2S wires improperly connected
  • Damaged exhaust system pipe
  • Damaged muffler/tailpipe assembly
  • Retarded spark timing
Compare HO2S upstream & downstream switch rate. Under normal closed loop fuel conditions, high efficiency catalysts have oxygen storage which makes the switching frequency of the downstream HO2S quite slow compared to the upstream HO2S. As catalyst efficiency deteriorates, its ability to store oxygen declines and the downstream HO2S signal begins to switch more rapidly approaching the switching rate of the upstream HO2S. Once beyond an acceptable limit the DTC is set. Catalytic converter bad !


P0442 - EVAP Control System Leak Detected (Small Leak) The PCM monitors the complete EVAP control system for presence of a small fuel vapor leak. The system failure occurs when a fuel vapor leak from an opening as small as 1.016 mm (0.04 inch) is detected by the EVAP running loss monitor test.
  • After-market EVAP hardware (such as fuel filler cap) non-conforming to required specifications
  • Small holes or cuts in fuel vapor hoses/tubes
  • Canister vent solenoid stays partially open on closed command
  • Damaged, cross-threaded or loosely installed fuel filler cap
  • Loose fuel vapor hose/tube connections to EVAP system components
  • EVAP system component seals leaking (EVAP canister purge valve, fuel tank pressure sensor, canister vent solenoid, fuel vapor control valve tube assembly or fuel vapor vent valve assembly)
EVAP Leaks P0442 and P0455

May 27, 2017 | Lincoln Town Car Cars & Trucks

1 Answer

Where is evap emission


Your evap emission system is your pressurized fuel system. If you are getting a check engine light and the scan is throwing an evap code start by changing your fuel cap. It is the cheapest part of the system and quite common to fail. Unfortunately if you change your cap and erase your fault codes and the check engine light returns for evap system again, you will probably end up at the dealership to track down the leak.

Apr 20, 2013 | 2005 Buick LaCrosse

1 Answer

Need description of obd drive cycle


This is my drive cycle a generic drive cycle i have used many times over the years and it has never failed me most drive cycles are too specific and impossible to adhere to for most drivers follow these steps exactly 1. make sure all codes are cleared and no check engine light is on 2 make sure the fuel level is between 1/4 and 3/4 full (this is part of the enable criteria for the evap monitor to run ) 3 let vehicle set overnight 4 start engine and let idle until the temp gauge is in the middle (this cold start enables the evap monitor and runs the O2 sensor heater test )5 drive vehicle around town avoid the highway stay at below 50 mph and when stoping at lights remove your foot from the gas and coast from around 50 to about 10mph or less if possible this will run the EGR monitor after about 3 to five miles of this proceed to the highway or freeway and travel over 50 but under 70 mph for about 3 to 5 miles this will run the catalyst test provided the O2 monitors passed if they didnt you will have a check engine light on before this point also i do a coast down on exit ramps (no braking) they make great places to get that EGR to run ONCE YOU START THIS PROCEDURE DO NOT KILL THE ENGINE OR SOME OF THE TEST WILL FAIL TO RUN

Jan 04, 2013 | 1999 Lexus ES 300

1 Answer

Check engine light 1989 buick keeps coming on after replacing gas cap, fuel pump sensor and part of something of the evap system


doesn`t sound like you have had the code pulled to see what is turning the check light on.this is needed to know were to start diagnoises.do this first then ask for help with the code mentioned and what it stands for.

Oct 26, 2011 | 1998 Buick Century

1 Answer

My 2000 Saturn did not pass inspection due to evap. and O2 sensors "Not Ready". How can I fix the problem or how can the problem be fixed?


What is the EVAP code?

The O2 are not ready because it takes some time for them to complete there self check after clearing trouble codes. This will involve a few drive cycles. Once the evap problem has been resoled, the check engine light cleared, you'll have to drive it for a couple of days to get everything in the "ready" status.

Sep 27, 2010 | 2000 Saturn SL

3 Answers

My Service Engine Soon light came on. Once it was a fuse for that light, but what other problem could it be?


a mil light or malfunction indicator light comes on when one of the vehicals emisions sensors is reading somthing that is out of range, possable bad o2 sensor or lean fule burn situation, while the light is on take it to autozone the will checkit

Jan 19, 2010 | 2000 Buick Century

1 Answer

2000 buick century custom. fuel gauge fluctuates between empty and 1/2 when level falls below 1/2 tank. low fuel light works. problem sending unit (how hard to change), gauge, or other?


The sender unit has a fine resistance wire with a slider to read the level, the slider or wires are worn and making intermittent contact, the low fuel light is a seperate switch so it will still work.access to the sender is usually under the rear seat cushon, under the soundproofing and a cover, have a look and describe what you have .

Nov 01, 2009 | 2000 Buick Century

2 Answers

LOW TIRE PRESSURE WARNING LIGHT


Turn ignition to run position,go to fuse panel right hand of vehicle,push and hold reset button for 5 seconds,low pressure light will flash 3 times,start car it should turn off the low pressure light.

Jan 05, 2009 | 2000 Buick Century

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

Related Topics:

196 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

76051 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Randy Ohler

Level 3 Expert

14585 Answers

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

Answer questions

Manuals & User Guides

Loading...