Monday, December 5, 2011

Erratic idle on car?

If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

Very common problem,noticed by many car users.
Have you ever cleaned the automatic idle speed control valve and threottle butterfly? It may be your problem. Try the following to clean these parts.
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 professional.
This basic details will help.

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1 comment:

  1. 1996 Nissan Maxima,3.0,manual
    Motor seems to idles corectly, when started its around 1400rpm,it slowly drops as it warms up to 700rpm. Normal temp or cold,as soon as i put it in gear,any gear, idle speed increases 1000rpm. depressing clutch alone does not cause this. Throttle position checks out good by ohm meter,vehicle speed control switch produces variable and increasing a/c voltage when spun by hand, both the air bypass solenoids,power stearing and air conditioning,work correctly,the intake air bypass valve assembly has been removed and cleaned,no solvent. car idles smooth has good power.only trouble code is knock sensor, any idea what could be causing the jump in rpms when shifted in gear?