Question about 1998 Volkswagen Golf

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Idling to high when driving.

Already change throttle body,But there no change.On drive only ,its like have the cruise control on.Please need help.
Thank you

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  • Volkswagen Master
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Reset computer if you replaced throttle body you still need to reset comp cause it holds the old properties of old throttle body

Posted on Jun 14, 2008

  • Christophe Thompson
    Christophe Thompson Jul 09, 2008

    also the cable to the gas pedal has an idle adjustment bolt on it this could be all the trouble thats been giving you sometimes when you do a throttle swap the cable stays in position

    in order to find this cable and bolt you will have to lay upside down on drivers side have a little light and look up towards the gas pedal becareful of the dust as it sometimes falls in the eyes little wrench also will drop or increase idle you can do this while vehicle idling chock the wheels put on emergency brake and adjust idle

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3 Answers

Engine idles a little high when in drive


check hoses for vacuum leaks also throttle body may need to be cleaned and or throttle body position sensor can be starting to be faulty or may require cleaning with throttle body --the following links show how to clean a throttle body look up the ones that do it in /on vehicle you dont have to remove it from vehicle
How to Clean throttle body GM 3800 throttle Body Tune Up Cable accelerator... Throttle body cleaning and idle relearn procedure

Jul 27, 2016 | 2006 Buick Lucerne CX

1 Answer

Cruise control, 1992 Chevrolet K1500 pickup truck.


Terrible news for you, you may have already figured out.
These accessories are in the category of : " Be thankful it lasted this long " !
Now, about a fix.
Here are some of the things that have caused my cruise to stop working.
Check these out on yours.
1) The engine mounts got loose, affecting the adjustment of the cruise control to the throttle body.
2) The cruise throttle body got loose on the inner fender due to loose screws or out-of-adjustment brackets.
3) The brake pedal switch got loose and caused the cruise to think you were pressing the brake when you weren't.
4) The drive shaft sensor/magnet fell off because of old age. (The glue failed)
God bless your efforts.

Jun 30, 2016 | Cars & Trucks

1 Answer

High idle 4000 rpms


Possibly a leaking injector or bad / stuck throttle position sensor.

Apr 27, 2016 | Cars & Trucks

1 Answer

Correct code P0504?


What Colorado do you have ? 2 wheel or 4 wheel drive ? Sport ,sport LS 3.5L , Z71, Z71 LS. etc. what size engine ? an does it have electronic throttle control ? I have factory service info an it is not showing that code .
DTC P0506

Circuit Description

The throttle actuator control (TAC) motor is controlled by the powertrain control module (PCM). The DC motor located in the throttle body drives the throttle plate. In order to decrease idle speed, the PCM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the PCM commands the throttle plate open allowing more air to pass the throttle plate. If the actual idle RPM does not match the desired idle RPM within a calibrated time, this DTC sets.

DTC Descriptor

This diagnostic procedure supports the following DTC:
DTC P0506 Idle Speed Low
DTC P0507

Circuit Description

The throttle actuator control (TAC) motor is controlled by the powertrain control module (PCM). The DC motor located in the throttle body drives the throttle plate. In order to decrease idle speed, the PCM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the PCM commands the throttle plate open allowing more air to pass the throttle plate. If the actual idle RPM does not match the desired idle RPM within a calibrated time, this DTC sets.

DTC Descriptor

This diagnostic procedure supports the following DTC:
DTC P0507 Idle Speed High
Cleaning the throttle body mite take care of it !
Cleaning Cleaning An Electronic Throttle Body Safely

Jan 31, 2015 | 2005 Chevrolet Colorado

1 Answer

Gas pedal gets stuck and keeps the car going cant stop without turning the car off


dont drive it. find the cause and fix it now.
Hot and cold engine or BOTH>?
1995 Tracker, no tranny , no 4wd , on engine options stated.
Exact high RPM in neutral, not stated...... 1500 is normal cold.
keeps going in Neutral. (nah , you have 5 ways to stop any car.
key, hand brake, foot brake and neutral. and with 4wd, 1 more neutral.
keep that in mind driving any car.
this car has up to 3 throttle cables that can stick. and more!

1: floor mats hit the pedal>? ala. Toyota style (lawsuits)
2: the three cables are, throttle. , cruise and A/T transmission kick down cable. if car is M/T and no cruise it has 1 cable.
so disconnect it, throttle fixed? (disconn,. 1 by 1, bingo?

no cure?, then its not the pedal , you meant just high idle.
yes, replace the cable or bad parts three.
ok say its not the cables.. (tests proved that)
the 95 came with 2 engines, 8valves and 16valves,
they work differently (8v love so race, 16v loves to stall)

1: ISC Stuck open, common.
2: 8v, any air leaks at all , will cause super high idle speeds.
3: throttle valve in the throttle body is stuckopen (gunk) or the return spring broken (very very rare the latter,in fact never heard of one breaking)
4: IAC (thermal idle control stuck open ,(my 97 was). and lots more.
5: on the 16v it takes 2 failures. to make high idle.
gross rich running engine (cold engine its normal) and any air leak
once hot the engine can not race unless there is huge overfueling
and an air leak.
6: the 8v has this device on the side of the throttle body.
called a dash pot. its just a fast idle vacuum servo.
if stuck open the engine will scream full time....
7: ECU stuck in limphome, can cause too high idle speeds.

we need to know which engine
http://www.fixkick.com/find-parts.html
8v or 16v first.
then does the idle race hot or cold or both (engine temperatures)
if it races , then how fast?, RPM the dash tachometer tells you that.

it can be as simple as a 50cent hose cracked.
to a dead ISC. (idle speed control) IAC is thermal idle air controller.
the IAC must be closed on a hot engine,
if the the engine never gets hot,it will scream full time.

Feb 13, 2014 | 1995 Geo Tracker

1 Answer

1995 4.3 blazer wont decelerate when driving it, the cable is not sticking, it idles a little high but like i said it is as if the cruise is set but it is not, is this some kind of sencer problem?


It sounds like your Idle Control Valve is stuck. Remove the Idle Control Valve on the throttle body and clean out the holes, and clean the Idle Control Valve. If the problem persists, replace the Idle Control Valve.

Mar 14, 2011 | 1995 Chevrolet Blazer

1 Answer

99 sl1 with 1.9 has high idle and will not idle below 1200 in drive


remove the throttle body (4 bolts) and then remove the idle air control (bolted to the TB, between the firewall and the throttle body)-clean the TB, the Idle air controller and remove the Throttle Position Sensor (opposite the IAC) and clean it if necessary. The IAC carbons up on these cars, as does the Throttle body-I know, I have a 99 SL with 180,000 miles, it is almost like an oil change as they get older.

Feb 18, 2011 | 1999 Saturn SL

1 Answer

Descibed in initial letter. Cruise control quit working 3-4 months ago, yesterday I was driving the car and it would keep speeding up as if cruise control was set but its off and not working. I would hit...


Check for anything that may be against your throttle cable. Look from the throttle body and follow it to the firewall. Your throttle body (butterfly could be staying open) The throttle body may need to be cleaned, once these get gunk built up, the butterfly will not close completely. If it can't go to a close state, the it's like having your foot on the gas pedal a little. The cleaner can be purchase at a local auto store. (throttle body cleaner)

Feb 12, 2011 | 2005 Ford Taurus

1 Answer

My 1997 chevy lumina is throttling too high to drive


CHECK TO MAKE SURE THROTTLE LINKAGE IS NOT STICKING.ALSO LOOK AT THE THROTTLE BODY GASKET.IF ITS LEAKING OR BROKEN IT WILL CAUSE HIGH IDLE SPEED.IF ALL LOOKS GOOD.SCAN IT.CHECK FOR IDLE SPEED CONTROL FAULT.IF IDLE SPEED CONTROL GO BAD IT CAUSES HIGH IDLE SPEED.

Aug 18, 2009 | Chevrolet Lumina Cars & Trucks

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