Question about 2001 Chevrolet Malibu

2 Answers

Chevy Malibu idle problem

2003 Chevy Malibu - 1st problem was that on long trips the car would not decelerate when wanted to slow down. If I stopped it would be revved up and once I got on the road again it would accelerate without me even touching the gas pedal. Drove through Houston, Tx like this and aged 10 years. This would only happen on longer trips > 2 hrs.

Now the car wakes up accelerated. When I turn it on first thing in the morning it is highly accelerated with the rpm gage at around 3 when it usually idles at a 1. If I attempt to drive it stays at about 30-25 mph without me even touching the gas pedal.
I have taken it to several mechanics without any success. They have done a tune up and fuel system flush. They suggested some valve might be sticking but they can't seem to diagnose it.

Any help to point the mechanics in the right direction would help.

Thanks.

Posted by on

  • 1 more comment 
  • hilbec Oct 20, 2008

    Thanks so much for your quick response. I'll take it tomorrow and see if this helps. Will get back to you.

  • tc3_33 Nov 27, 2008

    my malibu wont start unless i have my foot on the gas pedal. and wont stay running unles i keep my foot there. it runs fine otherwise. but as soon as i take my foot off the gas it struggles to stay idling until it dies or dies instantly. i checked the fuel pressure. which seems to be sufficient. i did have a bad alternator but changing that had no affect. the check enigne light never comes on until recently stating a problem with the mass airflow sensor. changed that, still no effect.



    recent work i had done on it was fuel system cleaning by chevy stealership along with new fuel filter. also had new catalytic converter put in which improved performance immensly but that when all the other problems started.

  • OLSKOOL957 Dec 06, 2008

    TRY REPL IDLE AIR CONTROL VALVE

×

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 42 Answers

Throttle position sensor. It's under recall for most Malibu models.

Posted on Mar 19, 2009

  • 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.

  • Chevrolet Master
  • 60,769 Answers

RUN A OBD 2 CODE TEST FOR ANY STORED TROUBLE CODES, KRAGEN AUTO DOES THIS FRO FREE AS WELL AS OTHER CHAIN STORES LIKE KRAGEN, THEN CHECK 2 THINGS, THE IDLE SPEED CONTROL VALVE, IT MAY BE STICKING DUE TO SLUDGE BUILD UP, CLEAN IT, IF HIGH IDLE IS STILL AN ISSUE REPLACE IT, THE NEXT IS CHECK THE THROTTLE POSITION SENSOR, THE SIGNAL RETURN VOLTAGE SHOULD BE ABOUT 1.0-1.25 VOLTS WITH THE THROTTLE CLOSED, CHECK WHEN THE IDLE IS HIGH, IF THE VOLTAGE IS HIGHER THAN ABOVE SPEC REPLACE THE SENSOR.

Posted on Oct 20, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Chevy Malibu cuts off when you slow down or touch the brakes


Bad egr valve or idle air control on the throttlebody. Basicly its a vacuum issue. Donot go to a dealr

Nov 19, 2015 | 2004 Chevrolet Chevrolet Malibu LT

1 Answer

1998 ford explorer gearshift solenoid


Sounds sort of like an internal wear issue, that may never
be determined, even after a complete disassembly to
rebuild it.

I know that is a vague answer & not a solution or good
guess, but having once owned a trans repair shop, I would
have to show you units apart & you would see wear but
nothing related to your noise or operating issues,just the
way it is with an automatic trans

Nov 15, 2012 | Ford Cars & Trucks

1 Answer

2003 chevy malibu was going down the road car stared slowing down moter running but no throttle would it be throttle positioning censor or fuel pump


test the tps with either a meter or scan tool. You should see volts between .10v to 5v. the higher the volts the more open the throttle. Test the MAF sensor and look for stable volt signal by taping the meter while its probed. The signal should raise apon throttle without lag. like the tps. idle might be at 0.9 volts and 1.5 volts at 2k rpm etc.

Jan 28, 2011 | 2003 Chevrolet Malibu

1 Answer

My 99 malibu starts and dies right away. It won't stay on unless I keep the gas pedal down and rpm above 1500


the ( iac ) idle air control is sticking and needs cleaned. heres how to clean. locate it on the throttle body, remove wire connector, remove the torx screws that hold it on. when off of car. clean valve on end you can use a old toothbrush or similar to do this. do not push in on valve it will mess up idle setting. on the 3.1 the setting is 1 and 1/8 from tip of valve to body of iac. you can use gumout spray or throttlebody cleaner. here are a few symtoms-- stalls after starts, when cold or hot. stalling on deceleration, stalls at idle, unstable idle, low idle, or stuck on high idle. hope this helps !

Jan 22, 2011 | 1999 Chevrolet Malibu

1 Answer

Acceleration and deceleration while in idle


acceleration is slow after 45mph
if I floor it, its doesnt have alot of pickup.
if I start out slow its fine,

May 19, 2010 | Cars & Trucks

1 Answer

Code po507


have you checked the idle control connector where it plugs into your throttle body for a good connection.

Apr 07, 2009 | 1999 Chevrolet Malibu

Not finding what you are looking for?
2001 Chevrolet Malibu Logo

4,735 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

60769 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

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

Answer questions

Manuals & User Guides

Loading...