Question about 1990 Toyota 4Runner

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When i hold the the throttle down its gets to 3500 rpms then starts surging

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  • Toyota Master
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Are you parked or moving.

Posted on Jan 01, 2014

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1 Answer

Why does my car idle at 2500rpms


CHECK IF ANYTHING GOT STACK,CLEAN THROTTLE BODY.CHECK ALL CONNECTION,YOU COULD BET THE PINS!

May 21, 2016 | Cars & Trucks

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Audi 2002 a4 v6 2.4l when the car first starts the RPMs surge up and down unsteadily this stops if you give a few revs on the accelerator pedal. When driving around 50kph the rpms surge slightly it feels...


You have two problems. The surging is from a dirty throttle body and /or air filter. The selector light could be from a bad selector switch or internal transmission problems. Have the car scanned for codes.

Oct 20, 2014 | 2002 Audi A4

1 Answer

Truck surges


if this has the 2.9 six engine yep I've seen this before
on the front of engine right behind the pipe that carries air from filter is the throttle blade on the left side of it is a black sensor with two phillips screws on it This is the throttle posisition sensor ford has a service bullitin on this It seems fine dirt in air follows the throttle shaft and gets caught inside this sensor
solution replace sensor and use throttle/carb cleaner to clean shaft from inside you'll see black dusty powder on it
Runs great for 15 minutes because ecm runs open loop(epa stuff) till then when it tries to go closed loop the sensor's input is not there so it goes crazy
any one with two hands and a screw driver can fix this

Jun 29, 2012 | 2004 Ford Ranger

1 Answer

1997 honda odyssey rpms go up and down while in park and trys to stall out when in gear and take foot off gas pedal


The idle speed in your car is controlled by a computer (known as the PCM), the computer controls a valve called the Air Bypass Valve, this valve and the throttle valve get full of sludge from fuel vapors and combustion "blow back", this causes the valve to stick or move slowly, this in turn causes surging (speed goes up and down) in the idle speed of the engine, it is the most common reason for idle surge on any fuel injected gas engine up to about 2004 when car makers starting using electronic throttle control. To clean the idle speed control valve and the throttle valve do the following.
To correct this problem Buy a can of throttle valve cleaner (it is made by CRC) from the local auto parts store, NEVER USE CARB CLEANING SPRAY, IT DESTROYS THE ANTI-STICK TEFLON COATING, spray it into the air intake through the throttle body of the engine until you have used about half the can, you will need to hold the idle up while you do this, it will try to stall, after this shut the engine down and disconnect the Negative (-) battery cable for 5 minutes. The intake is now clean, if you continue to have the idle speed control problems you may need to seek the help of a professiona

Jan 31, 2012 | Honda Cars & Trucks

1 Answer

CAR SURGES WHEN YOU ACCELERATE IN OVER DRIVE.


It may be the MAF sensor. In needs to be cleaned or replaced. Located on the throttle body, under the engine cover. Might need special anti-tamper Torx sockets to remove. 2 bolts. One wire connector.

I had to replace mine on 2002 3800 V6. Bucked and shook on moderate to hard acceleration at about 3500-4000 rpms.

Feb 03, 2010 | 2002 Chevrolet Impala

1 Answer

I have a 1989 Honda Accord LX automatic trans. When you start the car the rpm go up to 3000, generally once the car heats up you can tap the accelerator and the rpms will come down, but this is not working...


the idle surges if this is the case take out the air intake tube that leads to the throttle body, get a can of carburetor fluid and spray around the throttle body. You will need someone to start the car and hold the gas peddle to 2500 rpm while you do this the car will shut of when you do this, restart the car and repeat the process until half of the can is used up. Now check your antifreeze level fill if needed.

Nov 14, 2009 | 1989 Honda Accord 4 Door

2 Answers

Surging during warm up


try cleaning the throttle body.

Apr 14, 2009 | 1991 Honda Accord

1 Answer

1995 toyota pickup, surging at around 2000 rpms


Is the check engine light on?

A major cause of surging is either air leaks between the air flow meter and the engine intake manifold, or a bad or mis-adjusted throttle position sensor.

Feb 24, 2009 | 1995 Toyota Pickup

1 Answer

Dodge ram 1500 engine rpms surge at freeway speed


those sensors could cause the issue, clean the MAF 1st, also clean the idle system using the following procedure, the IAC can cause cruise surge. I use this to cure these problems all the time.

Here is the most common cause of surges and stalls and low idle, it is the idle speed control air-bypass valve (IAC) and throttle valve, they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, 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.

Jan 13, 2009 | 2001 Dodge Ram 2500 Truck

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