Question about 1991 Buick Century

1 Answer

Buick 94 century custome reving and irratic stumbling etc.

My car runs at a very high idle speed, and sometimes it comes back to normal when the service engine light comes on.
Gears wont change at a high rev. sometimes they do.
after heating up it simply dies while idling at a traffice light.
some help please

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 10 Answers

I've had this problem. It's most likely a large fail in one, or series of small problems in all, of these:
IAC (Idle Air Control) Valve - Will cause erratic idle
ERG (Exhaust Gas Return) Valve - Will cause irregular acceleration
*TPS (Throttle Position Sensor) - Most likely the culprit. It was my major problem. It'll cause exactly what you described.

And if you did not know this, your car is equipped with an OBD (On Board Diagnostic) system. Next time the service light comes on, whether the car is running or not, push [OFF] and [TEMP UP] on your climate control and hold for about 3 seconds. All the dash lights will come on and any error codes will be displayed where your odometer is.
Other controls are:
[FAN UP] -OK
[FAN DOWN] - Next
[OFF] - Rescan
[BI LEV] - Quit

Posted on Feb 13, 2009

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

Od flashing; high rev at low speed; no dtc.


Bad Sleeves - Ford Servo Bore Transmission Fix Solution

www.fordservoboretransmissionfixsolution.com/blog/bad-sleeves
Original owner let it run low on fluid because of leak. ... The worn bores will cause slipping, hard shifts, and high revs between shifts from those gears. ..... Andy I bought a 02 mercury mountaineer v6 4.0 the the O/D flashes and service light is on ... Get on a flat surface at highway speeds and manually turn the OD of and on.

"O/D off" light blinking on dash? please help anyone? - Discussion ...

www.topix.com > Ford Explorer
Aug 24, 2009 - i have a problem with my 2002 ford explorer sport trac OD blinking... it will turn of if i .... That wire led down to the transmission speed sensor. ... the O/D off light started flashing and its revving really high before it will change ... 2004 Jeep liberty problems
Dec 9, 2011
Ford Explorer O/D Light, Slipping Transmission
Nov 20, 2011
2003 Ford Escape Rough Idle/Engine light blinking
Apr 20, 2011
FLASHING O/D OFF LIGHT 1995 EXPLORER V6 EDDIE BAUER
Dec 3, 2009
More results from www.topix.com

Dec 05, 2015 | Cars & Trucks

1 Answer

2001 buick century runs fine when in park and nutral i can put it in drive and sometime i can go 10k sometimes only get 1k the it starts spudering and wont rev up but will idle fine put it in nutral and...


I think you have an engine speed sensor fault. its not reading the engine speed or the motion speed. needs these two to change speed and ( gear). one is connected to the abs unit and the other is on the engine. usually if they both go its down to the gear box ecu. you can check if you have it on a ecu reader. will have fault codes or not be read at all.

Mar 16, 2014 | 2001 Buick Century

1 Answer

Engine cuts out when requiring boost


check Fuel pressure regulator by disconnecting the vacuum hose. Didn't say what year you have, yet the timing belt can also cause this as I had similar problems on an 87 and the belts were loose and floppy causing erratic firing/idling. A little easy trick to check timing belts without taking any parts off to get at timing belts, is (and no one knows about this one, hee) with a timing light!

Apr 20, 2013 | 1997 Subaru Legacy

2 Answers

My truck wont start unless i prime the carborator first, then it wont stay running unless i rev it high just before i put it in gear, or im accellerating...


To start with, you have a throttle body instead of a carburetor.
On that throttle body is a component called an air control valve.
That valve is how the computer controls the idle speed. It should open and close the air flow into the intake manifold as needed.
Is the check engine light on when you are driving ? Have you checked the fuel pressure ?

Jul 30, 2012 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

Hi.i have a 04 audi a4 1.8t quattro 91k on the clock.The idle speed is too high about 1.2 and fluctuates to normal and then sometimes revs to 2,5 and then settles back again after a couple of seconds.I...


You need to have OBII scan performed. The fluctuating idle sinus like a MAF sensor, Temp & fan are separate issues. Get scan done, that should identify exact issues.

Mar 16, 2011 | Audi A4 Cars & Trucks

1 Answer

1995 buick lesabre engine revs up very loud, then normal when


I saw exact same problem for few days. Now I see check engine light all the time and engine speed is normal.
The cruise control stopped working. Cruise control sign so nOT light up when I turn it ON. Nor does it works.
But car seems to work fine.

Mar 21, 2010 | 1995 Buick LeSabre

1 Answer

Engine speed hunts on idle. Auto trans slow shift.


The fast idle valve is inside the throttle body. Sometimes it backs out and needs turned back in (it's threaded). This will cause the loping idle.

Get transmission filter changed with new fluid. Honda does not recommend transmission flushing.

Sep 17, 2009 | 1988 Honda Accord 4 Door

1 Answer

Engine reviving too high


sounds to me you need to lower the idle speed

Dec 01, 2008 | 1996 Mitsubishi Galant

1 Answer

Idle speed problem


I had a similar problem, engine would fluxuate engine idle speed. I had to change the "Throttle Position Sensor." You might have that checked out.

Jul 16, 2008 | 1989 Ford F 250

Not finding what you are looking for?
1991 Buick Century Logo

309 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts

yadayada
yadayada

Level 3 Expert

63801 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21990 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

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

Answer questions

Manuals & User Guides

Loading...