1991 Toyota Camry Idiling too high

Tiny
BATTYBEADER
  • MEMBER
  • 1991 TOYOTA CAMRY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 95,000 MILES
Hi, I recently bought a 91 Camry in very good condition. Fixed some leaks at the power steering pump area and o2 sensor.
But now it is idiling too high. I suspect a vaccum leak somewhere.
Do you have any other suggestions?
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Monday, September 29th, 2008 AT 12:55 PM

3 Replies

Tiny
RASMATAZ
  • MEMBER
Too fast an idle speed. If an engine without computerized idle speed control is idling too fast and refuses to come down to a normal idle speed despite your best efforts to back off the carburetor idle speed screw or air bypass adjustment screw (fuel injection), air is getting past the throttle somewhere. Common leak paths include the carburetor and throttle body gaskets, carburetor insulator spacers, intake manifold gaskets, and of course, any of the engine's vacuum fittings, hoses and accessories. It is even possible that leaky O-rings around the fuel injectors are allowing air to leak past the seals. Another overlooked item can be a worn throttle shaft and a defective idle speed speed control motor/valve stuck in the extended (high idle speed) position/throttle position sensor. Also the throttle plate could be binding in its bore and kinked accelerator cable, coolant temperature sensor might not be operating properly misleading the computer that the engine is still cold and computer throwing fuel at it raising the idle speed.
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Monday, September 29th, 2008 AT 2:36 PM
Tiny
BATTYBEADER
  • MEMBER
My car is computerized. Does that make a difference?
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Monday, September 29th, 2008 AT 4:29 PM
Tiny
RASMATAZ
  • MEMBER
I know that-start by checking the throttle position sensor/idle air control valve/coolant temperature sensor also vacuum leak and check the fuel pressure. Comeback with some results in order to conitnue
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Monday, September 29th, 2008 AT 6:18 PM

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