Question about Cars & Trucks

1 Answer

Having idling problem on 1990 buick lesabre limited when in park or neutral the rpms go up from 1500 to 2500 sometimes 3000 in the past i replaced the tps, idle control valve, cleaned the mass air flow censor and cleaned up the throttle body and replaced the gasket anyone got any suggestions?

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    New Friend:

    An expert that has 1 follower.

    Greenhorn:

    A rookie expert who has answered 20 questions on their first day.

  • Expert
  • 52 Answers

Check for a vacuum leak. You may need to adjust the IAC(idle air control). If the power brakes are also very hard then its a vacuum leak.

Posted on Jan 01, 2014

Ad

4 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 there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad
saabreur
  • 51 Answers

SOURCE: rough idle on 1990 saab 900 convertible, 16V

Because the car has adaptive technology, it may take a while to reset and adjust to the new, cleaner and better conditions than those to which it had previously adapted.

Did you change the cap and rotor? if the plugs needed replacement, likely they do too

Possible other causes include:

loose or corroded connections to any electrical component you disturbed (make a checklist and tick them all off as you check them);

mis-reinstallation of any F.I. part disturbed(checklist again)

obstructed water flow through the AIC valve;

improper voltage output from the AIC valve (for LH 2.4 systems, should output 8 volt at idle, dropping as load increases; for LH 2.4.2 system output 7 volt at idle etc; testing between terminals)33 and 17 at disconnected LH connector;

possible problem with MAF.

Hope this helps

Saabreur







Posted on May 30, 2009

MNfisherman
  • 11896 Answers

SOURCE: 1999 pontiac grand am 4 cylinder rough idle, rpms fluxuates

Most likely your throttle position sensor is faulty. You could have a vacuum leak as well. Most probable cause is a bad sensor. Is your check engine light on? Have you checked your engine codes? You can go to autozone.com and register for full free online repair manual.

Posted on Sep 14, 2009

Testimonial: "the check engine light had been on but we unplugged the battery yesterday for a couple of hours and put it back in and the light isn't on anymore. "

  • 196 Answers

SOURCE: 97 buick lesabre 3.8 Idles rough and stalls out.

ignition system not operating properly ,or intake air leak ...crank engine get a can of staring fluid spray around the intake if the motor idles up you got a leak hope this helps

Posted on May 08, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

96 buick lesabre ...already posted a question,,but wanted to add that it seems like an air leak,,replaced aic valve,,no change,,the rpms raise to over 3000 and lowers to 800 on and off till car stals,,when...


Trying to guess your way through a repair never works , Having a qualified Technicain with the proper diagnostic test equipment an knowledge does . It could be any number of thing's causing this problem . Looking at scan data ,checking IAC control by the PCM ,MAF sensor data . fuel trims ,EGR etc...

009 Idle Speed Problems Scan Data for EGR
007 Idle Speed Problems Scan Data for Idle

Nov 03, 2017 | 1996 Buick LeSabre

1 Answer

1990 Buick Lesabre Limited. Has 140000 miles on it. Car shakes and is slow to accelerate. Car does not shake in neutral or park. This varies by trip. Sometimes it runs better than ever, other times it...


First thing to do is replace spark plugs and ignition wires.

It will usually clear this up and if u take it to a garage they will do that anyway and charge you dearly.

If you need further help, reach me via phone at https://www.6ya.com/expert/gary_9c859f4aa7e5ab10

Mar 03, 2018 | Cars & Trucks

1 Answer

I have a 00 buick century. i cannot get it to go past 2800 rpms in any gear..driving or at idle have changed icm. sounds like rev limiter kicks on. this happens when your driving as well


Thinking there is a rev limiter on that car,designed to work only in park and neutral
Sounds like maybe it's staying on,
My first thought would be the neutral saftey switch on the ******.

Sep 16, 2011 | 2000 Buick LeSabre

1 Answer

My 1997 lesabre runs fine until Im at a stop then it idles ruff it is less sever when in park but bad when im stop using the brakes


Could be the Idle Air Control if so equipped. The smoother idle is because when in neutral or park, there is no drag on the engine from the transmission.

Aug 13, 2009 | 1997 Buick LeSabre

1 Answer

Car drops out at 2700 rpm and sputters


There is a rev limiter in these cars that disallows over revving in park or neutral. Does it climb past 2700 under hard acceleration?

Jun 01, 2009 | 1990 Ford Thunderbird

1 Answer

I have a 2003 Lincoln LS and it wont go over 3000 rpms


this car has a limiter on it so the engine wont go over 3000 rpms in park or neutral

Apr 19, 2009 | 2003 Lincoln LS

2 Answers

1990 Buick Lesabre keeps stalling


Check ecm for part number 1228253. If it has this number in it replace it with a 16198264. Gm had trouble with that ecm for a cutting off problem. Mine would stall driving down the road and when I would put it neutral it would start back up and not have any trouble for the rest of the day. You must set the tps with a volt meter or scan tool.

Apr 18, 2009 | 1990 Buick LeSabre

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

Related Topics:

54 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

80339 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

john h

Level 3 Expert

15190 Answers

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

Answer questions

Manuals & User Guides

Loading...