Question about Toyota 4Runner

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1998 4Runner - rough idle, engine light on (blinking, at times), sometimes when I step on the brake it brakes quickly rather than to a slow stop

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The first thing I would do is to go and get the service light checked out. You can go up to an auto parts store (Autozone, Advance Auto Parts, or O'Reilly's) and they can scan your truck's computer for the trouble codes. This can really help in shedding some light on why your engine is idling roughly, although sometimes a rough idle can be caused by little things like bad fuel or needing a tuneup. As far as your brakes go, it is a good thing that your brakes stop your truck quickly. It is when your brakes slowly stop your truck, you should start to worry. Just adjust how much pressure you apply to your brake pedal.

Posted on May 29, 2011

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Idles roughly, then low when stopped or in park, then dies. Decreasing gas mileage. Slow to accelerate


Sometimes that's caused by a vacuum leak near the manifold area.

Sometimes air in the coolant will cause an idle problem. Air will keep the air temp sensor from sending proper info.
Hope this helps.

Jan 03, 2014 | 2004 Ford Taurus

2 Answers

I have 1999Chevy suburban with 6.5 turbo diesel motor.it idles up and down and when driving the gas pedal is real touchy Wat is the problem and were do i locate the problem


Check the help links related to this problem.Click the link below to go through its troubleshooting procedure :-----Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html---------
Car won't start without hitting the gas pedal? http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html
-------Complete loss of brake pedal then all gets normal? http://repairhelpcenter.blogspot.com/2012/01/complete-loss-of-brake-pedal-then-all.html
------Car dies when gas pedal is pressed? http://schematicsdiagram.blogspot.com/2011/12/car-dies-when-gas-pedal-is-pressed.html
--------Pushing on the gas pedal, but the car slows down? Gas pedal to the floor and the car slows down?

http://technoanswers.blogspot.in/2012/02/pushing-on-gas-pedal-but-car-slows-down.html

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After replacing brake rotors and pads, brake pedal remains on floor? http://technoanswers.blogspot.in/2012/02/after-replacing-brake-rotors-and-pads.html

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accelerator pedal sensor? http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

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For rough idle issues and problem troubleshooting,go through the help links provided below :----- van idles rough?

http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html

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will not idle when cold?

http://technoanswers.blogspot.in/2012/02/ford-explorer-40-will-not-idle-when.html

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runs lean and idles rough?

http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html

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Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

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Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

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Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

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Idle Air Control (IAC) Valve Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

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Engine quits at idle?

http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

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Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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This will help.

Thanks.

Mar 01, 2012 | 1999 GMC Suburban

1 Answer

Mazda Protege 2001. Started making some grinding noises and like failing to brake properly(which was rare in my car-excelent brakes). I took it to 2 diferent mech techn. and they solved the noises, but the...


The barke problem may be related to new or resurfaced brake rotors, the rotors and pads need time to brake in, they should of told you that you shouldnt do any hard braking or riding the brake for about 200 miles. this allows the new pads to break into the new rotors, what happens is the car will not stop as quick as it did before until the brakes break in but if you try to push on pedal harder to stop as before it wont, then the pads and rotors glaze up and brake is not going to get better, try easy braking and no sudden or hard stops for a while. as far as the idle of the engine, this has nothing to do with the brakes it maybe something else. if the ac is on the engine will rev up and down as compressor turns on and off, this may be the problem which is normal.good day.

Aug 17, 2011 | 2001 Mazda Protege

1 Answer

Actually it's a 2000 Escort Coupe ZX2 and it's been idling very rough as I slow: several times has died. My oil is clean and replaced new apprpriate spark plugs just prior to this growing condition. I...


as you slow down you have your foot on the brake and that means that the brake booster has a vacuum leak is causing the rough idling and stopping
before you spend a dollar have that checked out by starting the engine ( hand brake on) and if it idles ok , the apply the foot brake and it plays up , it is a brake booster vacuum leak problem
the fix in that case is a replacement brake booster

Apr 25, 2017 | 2000 Ford Escort

1 Answer

I have a 1997 Ford Escort Wagon and I don't have a problem while I am driving, but when I slow up to a stop. The motor will come to a rough idle when I stop and sometimes the motor will die. I can restart...


try this test
place in neutral with the park brake on
start the engine if it idles alright put your foot on the brake
if it falters or plays up ,it is a vacuum leak in the brake booster
replace the booster

Mar 24, 2017 | 1997 Ford Escort

1 Answer

I have a 1994 Honda Accord 4 door v6. I have rough idle when in drive and smooth idle when in neutral. Also rough take offs from a stop or slow speeds. If I pump the gas pedal a few time the rough take...


  • does the engine miss? bumps is a rythmic pattern?
  • an engine miss will appear to diminish at higher rpm due to centrifical force.
  • other possible problem broken or flat motor mount.
  • is the idle rough in reverse?
  • if not
  • open hood
  • start engine
  • Left foot on brake (hard)
  • start engine
  • watch engine as you select drive
  • still holding brake with left foot / throttle gas with right foot
  • does engine dramatically move?
  • if so replace motor mount on offending side
  • if not possible engine miss or transmission problems

Jul 10, 2010 | 1994 Honda Accord

1 Answer

I have a 2000 4 cyl. automatic Camry with 52,000. Recently, the car has developed a rough idle and it stalls. This occurs when the engine is hot and I slow the car down at a stop light or it stall as I am...


try disconnecting the hose to the brake booster and plugging it, the take it for a drive, ( you won't have power brakes so do this in a empty area)

Jul 19, 2010 | 1997 Toyota Camry

1 Answer

My 1989 Daihatsu Charade CLS (3 Cylinder) has a low idle


The E-brake light is on because the brake is slightly on, or the fluid is low, or the brakes are failing It sounds like the fluid is getting low from normal brake wear and not a problem. Just get the front brakes cheched and replaced. Don't put any fluid in because the new brake pads which are thicker will take up the space the fluid has dropped and push the fluid back to the correct level

Your engine is shutting down at idle because of a a bad seal on the engine induction system. It is the big duct that connects to the engine air intake. Leave the car running at idle, E-Brake on, and squeeze the big black duct going from the air filter to the engine, Does the car shut off? Next check small little hoses that attache to this big air duct. Try moving them a little to see if the engine runs different.

If these are good then I would shut off engine and remove this duct. A hose clamp holds one end. A slotted srewdriver will work to remove this clamp. The other end, at the Air Filter simply unclamps by hand.

The Throttle Valve is the first thing you see in the engine, it is inside the intake just after the duct you removed between the Air Filter and Intake. Have some one open the Throttle by stepping on the gas pedal and see if it is clean around the edges. If not, use some cleanning alcohol from your medicne cabinet to clean this area. A toothbrush will get into the tight spaces. Wipe clean with paper towel. Autozones sells a special cleaner called Throttle Valve cleaner spray. Use this not Carburator Cleaner.

If it still runs bad a idle the idle valve could be dirty and now you need more tools to remove it and clean too.

May 27, 2009 | 1988 Daihatsu Charade

2 Answers

Oil light and brake lights blinks on and off and abs light is on


Just a idea. If the car is running at idle and the oil light blinks , it usually from low oil pressure. At a idle your seeing the light respond to the revolutions of the engine. ! thing to try is to replace the oil pressure switch on the engine block. And #2, Most causes in a VW is that the vehicle overheated at one time and weekend the oil pump,or massive amount of miles.

Jan 14, 2009 | 1999 Volkswagen Passat

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