2004 Buick LeSabre Logo

Related Topics:

J
Joseph Jerome Boswell Posted on Sep 29, 2016
Answered by a Fixya Expert

Trustworthy Expert Solutions

At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.

View Our Top Experts

I replaced the MAP sensor AND the MAF sensor. the car now has a rough idle. did those replacements cause the rough idle?

For some reason other than the anti-theft system the car went into the crank-no start mode. i replaced the MAP sensor and the MAF sensor. i reset the PCM. car started the idle is rough.

Answer This Question
  • deton8 von Splosion Sep 30, 2016

    Hi Joseph Jerome Boswell,

    I want to help you with your question, but I need more information from you. Can you please add details?

    Edit in the rest of the story... you replaced these... because??
    Best to repost the WHOLE story/question...!!

    What codes you HAD...
    What codes you now have?

    The "DEALERSHIPS" throw parts... as well as most mechanics... Don't worry about
    guessing at what the trouble is... Just help us give you BETTER GUESSES... Pretty please.

×

1 Answer

Marvin

Marvin

Level 3:

An expert who has achieved level 3 by getting 1000 points
Top Expert:

An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.
Superstar:

An expert that got 20 achievements.
All-Star:

An expert that got 10 achievements.

  • Buick Master 85,242 Answers
  • Posted on Sep 29, 2016
Marvin
Buick Master
Level 3:

An expert who has achieved level 3 by getting 1000 points
Top Expert:

An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.
Superstar:

An expert that got 20 achievements.
All-Star:

An expert that got 10 achievements.

Joined: Jun 20, 2008
Answers
85242
Questions
28
Helped
29036193
Points
266281

Did you disconnect the battery negative cable for 5 minutes after the parts were replaced? If not do so then drive it at least 20 miles in varying conditions of idle cruise and so on. See if that helps the rough idle. also rerun the fault code test and see if any codes reappear, I have a feeling you did not fix the problem but just threw parts at it.

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1helpful
1answer

99 Isuzu Trooper RPM keeps racing! These sensors have been replaced; TPS, IAC, CTS, no Vac. leak. The RPM still races at normal operating temp. What sensor tells the computer the RPM of the engine?
redux1
after many posts, we see only 1 clue engine
MAF
the 6ve1 engine
that told me what engines. one word, mAF.
if just one MAF (no map)
so all air leaks are slow rpm caused by lean
but if pcm goes in to limp home mode.
it car race, due to loss of IAC controls
the engine does not run like you think
the CMP/Cke sensors,
if they die , the engine dies.
if they misfire, the engine misfires and slows and stalls'

are you using good scan tools real that see all factory codes. p1, p2xxx?
not just fedcodes, p0xxx?

the 3.5v v6 has a MAP and a MAF BOTH.
on some engines like this, the Map is for idle
and the mAF of for fast.
fooling many machanics
dual mode systems,
the MAF sensor is not very accurate at idle
is the reason for the dual mod
so vacuum leaks, I SAY.
Read full answer
Mar 01, 2017 • Isuzu Cars & Trucks
0helpful
1answer

Locating MAF on 2001 alreo
Honda's do not use a mass air flow (MAF) sensor. They use a manifold air pressure (MAP) sensor. The MAP sensor measures vacuum vs the MAF sensor measuring air flow/temperature. No real reason to clean a Honda MAP sensor. Are you having engine performance/idle problems? --------------------------------------------------------------------------------
Digimaster 3
Read full answer
Apr 02, 2013 • 2000 Oldsmobile Alero
0helpful
1answer

Rough or high idle
are there any codes? do you hear and vacuum leaks? have you replaced the idle air control valve
Read full answer
Jan 07, 2013 • 2002 Pontiac Firebird
0helpful
1answer

What is causing my 97 mazda pickup to idle rough then die?
2 things could be happening. One, the maf, or map sensore is bad. If there is a check engine light on, have it checked out. Second, it could be the throtle position sensor. Or just crappy gas. Rule the gas out first before changeing sensores.
Read full answer
Nov 12, 2012 • Cars & Trucks
0helpful
1answer

92 jeep wrangler 4 cyl 5 speed skipping and bogging down idling rough replaced fuel pump/filter injector o rings fuel pressure regulator timing chain distributor plugs wires map sensor crank sensor idle...
Have you checked the cam sensor? Also does that vehicle have a "throttle position sensor"? Some cars use both MAP and MAF sensors, not sure about your particular vehicle but if it is one of those, cleaning the MAF wouldn't hurt. Good luck.
Read full answer
Jun 28, 2012 • Cars & Trucks
0helpful
1answer

Just replaced all plugs, plug wires, distributor cap and rotor. When I start the truck it idles very rough for 5-10 seconds, then smooths out. Trouble codes 33(MAP sensor) and 45(Oxygen sensor) now pop up....
Check to see that you did not accidently unplug the vacumn to the Map sensor
Read full answer
Jun 13, 2011 • 1990 Chevrolet Suburban
5helpful
3answers

My 2004 toyota tacoma has a rough idling problems and I was told to replace MAP sensor. Now, would it be Mass air flow sensor ? Because I can not locate any info on MAP sensor of this yeat truck
Yes your truck is equipped with a mass airflow sensor (MAF). However, I would not just replace that because its running rough. I would begin diagnostics by first checking to see if there were any trouble codes in the engine to give you a clue as to the rough running condition. I would expect a trouble code to be present to support the descision to replace the MAF Sensor. If no codes are present I would suggest that you get the vehicle tuned up. (Spark plug replacement and throttle body cleaning and I would also suggest removing the idle control valve and cleaning the carbon and dirt out of it. Although what you were told might be correct I dont belive that is where I would start.
Read full answer
Feb 18, 2011 • 2004 Toyota Tacoma
1helpful
1answer

Rough Idle...97 pick up replaced egr, maf, and map sensor and it still is running rough and wanting to cut off...any ideas
check for inlet manifold vacuum leak, spray some lube like RP7 into that area and you may find the engine will run rough, thats the problem
Read full answer
Oct 04, 2010 • 1997 Nissan Pickup
4helpful
2answers

Runs rough at idle. has P1115-map prob. and P0100mass air flow prob. does this car have a map sensor?
MAP or MAF showed computer,one or other,but baro is there in the MAF
Read full answer
Nov 24, 2009 • 2002 Kia Sportage
Not finding what you are looking for?

View Most Popular

2004 LeSabre

  • Cars & Trucks

Related Question

99 Isuzu Trooper RPM keeps racing! These sensors have been replaced; TPS, IAC, CTS, no Vac. leak. The RPM still races at normal operating temp. What sensor tells the computer the RPM of the engine?

  • Isuzu Cars & Trucks

Related Topics

263 views

Ask a Question

Usually answered in minutes!

Popular Questions

Buick forum

Buick LeSabre Cars & Trucks

Buick LeSabre Limited headlight switch

2000 Buick LeSabre

P0171 Code (Lean Fuel Bank 1) Engine light on

1998 Buick LeSabre

1995 Buick LeSabre Custom Serpentine Belt installation

1995 Buick LeSabre

1995 Buick LeSabre - horn blows

1995 Buick LeSabre

Check Out the Latest Top Trucks Report!
Check Out the Latest Top Trucks Report!

View all Fixya Reports

Top Buick Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6988 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

15088 Answers

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

Answer questions

Manuals & User Guides

Loading...