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305g excessive high idle that will not idle down

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2000 Toyota coaster it is a EFI.1HDE-FTE engine. While trottling it is fine but if I press the gas pedal and let go, the rev doesn't come down,it stays high, just keep a high rev,what could that be?


Do you have a check engine light on? Are you saying that the engine idle speed is excessively high? If that is the case have you checked for intake manifold vacuum leaks?

Jun 07, 2016 | Toyota Cars & Trucks

1 Answer

Hi I have bought. super splendor bike 2011.my bike mailege. was suddenly getting down to 30 kms.per litre. I have changed new air filter. And head walls setting also. but no result.


Hi Anonymous and the usual suspects are:
1. Excessive enrichner use.
2. High-speed riding style.
3. Idle speed improperly adjusted.
4. Dirty air cleaner element (may also affect idle speed).
5. Vacuum piston assembly malfunction.
6. Excessive accelerator pump output.
7. Plugged or restricted bowl vent.
8. Fuel level too high.
9. Loose jets.
10. Worn or damaged needle or needle jet.
11. Enrichner valves not seated or leaking.
12. Plugged air jets or passages.
Good luck and have a nice day.

Aug 15, 2015 | Super Motorcycles

1 Answer

My 94 k2500 6.5 turbo diesel is idling high but when I tap the accelerator it goes back down and idle rough, when I try to drive it will jerk or surge, and it will also blows smoke what is wrong?pmd.


check that the turbo is fully operational ( variable vanes are free to move , actuator and vacuum hose are in good condition
the smoke is an indication that it is on on the job
the high idle may be from excess fuel and not enough air
and the rough idle and jerking indicates a air fuel ratio problem back again to the turbo
If you have fault codes run them and consider putting it on a chassis dyno for a full test of the pump and turbo

Jun 27, 2015 | Cars & Trucks

1 Answer

I have a 2002 LW200 wagon with L61 Eco-tec. I installed rebuilt engine. Put back old IAC. I checked pintal to make sure it was 20MM. Engine starts great but idles at 2300-3000. After a few seconds the...


throttle position switch sounds like getting false readings to computer,
incorrect volts or excessive play from the throttle plate or sensor causes this,has to be one or the other,also check for any intake leaks from the filter to the throttle body,good luck,Gary

Oct 24, 2013 | 2002 Saturn L-Series

1 Answer

92 ford ranger when first started excessively high idle


Could be a vac leak, or a faulty idle air control valve on the throttle body.
The computer controls idle speed by regulating the amount of air entering the intake.

Sep 23, 2012 | 1992 Ford Ranger

1 Answer

I have a 1999 ford contour 2.5 v6 high idle excessive noise from iac and goes away on accel


I have teh same vehicle/engine and had the same problem. I replaced the IAC and have not heard the noise since.

Jan 29, 2012 | Ford Contour Cars & Trucks

3 Answers

150,00 miles with excessive high idle.


You may need to adjust your idle setting. Also, it could be an idle sensor or throttle sensor. A map sensor will cause this as well.

Mar 05, 2011 | 2001 Mercury Villager

1 Answer

How can you turn down the idel car runs wayto fast.


You will need to play with the idle air control motor or adjust the throttle cable. Lots of times when the vehicle idles to high there is a vacum leak or broken rubber hose sucking in excessive air. To find it you can take throttle body cleaner and spray under hood. If the idle bogs down then you know you have a vacum leak that needs to be repaired.

Dec 01, 2010 | 1994 Cadillac DeVille

1 Answer

Failed exhaust emission tests on Nissan Sunny N14 eng 1600


Clean the MAF (mass air flow sensor.)Follow the hose from the air filter to the air flow sensor.Use a proper cleaner rated safe for this purpose.

Jun 25, 2017 | 1995 Nissan Altima

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