Question about Mazda MX-5 Miata

1 Answer

ROUGH IDLE SMOOTHS OUT WHEN TPS SENSOR UNPLUGED

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Cheetah:

    An expert who has answered 20 or more questions within one hour.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 172 Answers

Did you try cleaning the TPS or replacing it?

Posted on Apr 12, 2014

6 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

  • 625 Answers

SOURCE: rough idle

have this car taken to an auto repair and ask for a engine oil flush and engine oil change, that mught help

Posted on May 28, 2008

  • 1 Answer

SOURCE: 1989 Cavalier Z24 3.1 rough idle and hesitation

its just white cuz i too the cat off..

cuz i thought my proble could have been to do with the cat...

cuz i lost power driving up hills and on highways now it just will start the die right away

or start and idle really bad...

any ideas???

i was thinking crank sensor.. or injectors

Posted on Oct 01, 2008

Molson02536
  • 3854 Answers

SOURCE: Idles rough and is hard to start apears to run better after it warms up. Have replaced the ICO, TPS, and the map sensors with no effect.

You can clean the EGR. No promise it will work. I have an idle problem on my `97 Grand Am Se. Shop told me I could clean it and it might solve my problem. 
Just remove the EGR with the 2 bolts from the top of the manifold behind the throttle body if you have a 3.4 v6 like I do. Then leave it upside down with throttle body cleaner in it. Fill the EGR level with cleaner and let it soak for at least 30 min or more. Then reinstall. 
This will remove any carbon on the inside which plugs the needle from pushing out at highway speeds. Hope this helps. If the problem returns in a week or so then replace with new EGR. New EGR is about $100-200! Cleaning seems to have helped my car did that about 3 weeks ago.
If you have a service engine light on turn the key to the run position on the ignition, pull the fuse to the ECM (batt) and disconnect the wire harness to the EGR. Reinstall it after a 1 min, That will clear all the codes in the ECM and reset everything.
Once you place the ECM fuse back in, start the car. It may stall but let it, DO NOT TOUCH ANY THING. The ECM need to relearn the EGR and engine from all it's sensors like the first time it was started. Just start it up again and it should be like the day it came off the assembly line and will relearn everything.
Good luck and just drive it like you always. If you decide to change the EGR valve, you still need to clear the ECM as mentioned above for the ECM to relearn the new EGR valve. Hope this helps and keep me posted.

Posted on May 25, 2009

  • 1 Answer

SOURCE: 1989 Cavalier Z24 3.1 rough idle and hesitation

I had the same problem with my Z when i had it. But it worked when i just left the little hose off of the EGR valve.

Posted on Jun 13, 2009

emissionwiz
  • 75005 Answers

SOURCE: I have a 1991 Buick Park Avenue. Runs rough in

Here are the common cause of surges, cold stalls, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours.
To correct this problem I want you to get a can of intake cleaner (ABOUT $5.00) from any local auto parts store like NAPA or Carquest, do not use carburetor spray, intake cleaner only or u will damage the Teflon coating inside the throttle valve and air bypass valve, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on May 25, 2010

Testimonial: "Thank you, I'm sure if your advice it was I'm looking for. But at least if this works, it will save me a lot money from having to replace expensive sensors."

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

How to fix a 1992 Honda accord?


TPS - throttle position sensor , possibly . How does the car idle ? smooth , rough ?

Dec 21, 2016 | 1992 Honda Accord

1 Answer

My 91 Chevy s-10 2 wheel drive p/u w/2.5 four cylinder wont idle and runs rough when i rev the motor which the only way i can keep it running is to feather the throttle. If i unplug the vacuum to the


the problem if from the map sensor.. when you change it it will run rough and keep cutting off,, keep stating it back and reeving over and over as soon as it cuts off again keep repeating until the CPU gets calibrated with the new sensor and it starts idling smoothly..

Dec 30, 2012 | 1991 Chevrolet S-10

1 Answer

I have a 2002 envoy 4.2 vortec it has a rough idle when i put it in drive but but it does not do it in park and its worse when it cold if i drive it for about a hour it smooths up do not have a code yet...


Hi and welcome to FixYa!

Looks like that you have a faulty TPS (throttle position sensor). If the TPS is faulty you'll have a rough idle when in drive even worse during cold start ups. It is located on the throttle body. Have it replaced and you'll be good.

Hope this helps and thank you for using FixYa! Have a good one!

Jan 27, 2011 | 2002 GMC Envoy

1 Answer

I have a 1997 Lincoln Continental ocassionally after driving and turning the car off it take two or three times to crank back up. when it does crank it idles kind of rough till you gun the acceleraror a...


Could be a sticky throttle position sensor TPS. If the TPS is not sending the right signal or the signal is not getting through then the ECU is unable to set the idle air control mechanism accurately. Clean the throttle interior, spray plenty of WD40 since it helps in the cleaning process as well as lubricates. I find using a clean paint brush is an excellent tool for cleaning awkward places Wipe down thoroughly when like new. The TPS is located on the throttle body at the end of the throttle plate shaft. It has three wires connected to it. The outer pins supply a voltage reference range of 0 volts and 5 volts. The middle pin should read near zero volts when the throttle is closed at idle. As you rotate the throttle plate the voltage reading should climb smoothly. If the clean up fails to help have a long look at the TPS.

Oct 17, 2010 | 1997 Lincoln Town Car

1 Answer

Will not run smoothly when engine warm unless MAF


I would guess you pretty well havew it figured out. Change the MAF sensor.

Dec 24, 2009 | Mitsubishi Montero Sport Cars & Trucks

1 Answer

Honda civic hatchback idles really high


The person that told u that it was the tps and idle air they we're completely right!! The tps sensor is what makes it do that. If you pull the air intake of there's 2 holes on the throttle body. Plug one of the off with your finger while the engine is idling high and it should come down mine was the top hole. If it does go down just get a new tps sensor. and the back sensor on the intake to be safe. or the ghetto way is to plug the hole off, not my sugestion.

Jan 26, 2009 | 1993 Honda Civic 4 Door

2 Answers

Rough idle, surges when cold


have it scanned,ck' tps sensor,mass air sensor,idle air sensor for output...kev-mn.

Dec 10, 2008 | 2002 Ford Escape

1 Answer

Not idling smoothly, sometimes having to restart at a stop w/ tranny in drive.


sure, that could be it. I would also suspect the fuel filter as well.

Jul 11, 2008 | 1997 Ford Aerostar Extended

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

Related Topics:

31 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mazda Experts

yadayada
yadayada

Level 3 Expert

74945 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7697 Answers

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

Answer questions

Manuals & User Guides

Loading...