Question about 1989 Volvo 240
Car will not stay running ....will not idle.....starts up and shuts right down....but car was running well just before I disconnected the battery to clear check and service lights in dash.....car has been turned up ...gas filter ect.ect.. and checked all over what did i miss and the 400.00 dollar teck down the street.......at one time car needed to be warmed up before it would run well.....
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Posted on Jan 02, 2017
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Engine stalls or RPM fluctuates at idle up and down.
is commonly caused by a dirty automatic idle speed control valve and
throttle valve but always run a OBD2 fault code as well as the
cleaning procedure. Buy a can of throttle valve cleaner (do not use
carburetor spray cleaner!) from NAPA or Carquest (made by CRC
chemicals) and spray it into the air intake while the engine is
running, use up about 1/2 the can, engine will try to stall hold the
speed up, shut it down and let it soak for 30 minutes, restart and
blow out the remaining fluid, shut it down and disconnect the
negative battery cable for 5 Min's to reset the base idle control
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