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I have found that replacing the PCV valve AND chasing down any exhaust manifold leaks usually does the trick.

2009-09-05 04:22:43
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Q: Why is the idle fluctuating on a 1991 Toyota Tercel?
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Related Questions

What would make the idle rough and the acceleration weak and jerky ref Toyota Tercel 1991?

The first thing to check for rough idle and weak acceleration of a 1991 Tercel is the vacuum system for leaks. Also check to make sure that the EGR valve is not clogged, and that the timing has not jumped.

What would make 94 Toyota tercel die when idle?

compression you should check that first or faulty injectors maybe look me up on youtube THA REAPER 94 tercel

Have 1991 Toyota Tercel Burning oil and Cooling fan dosent work and will over heat when idle?

change the head gasket the oil pan and head gasket and check the fan fuse i had the same problem this helped everything.

Where is the idle air control motor on your 1991 Toyota 4runner?

it mounted on the throttle body

What could cause a 1991 Toyota Corolla engine to stop running after startup at idle repeatedly?

There are a number of reasons why a 1991 Toyota Corolla engine would stop running after startup. It could the idle control, an EGR leak, or low fuel pressure.Ê

What is the ideal idle speed or a 1991 Toyota landcruiser?

The idle speed for a 1991 Toyota Land Cruiser with the 4.0 3FE engine should be set at 650+- 50 RPMs. This is adjusted by the screw just above the throttle position sensor on the middle of the intake plenum. I have a 1991 LC and this is where I adjust after the timing is set.

How do you test the fuel pump on a 1993 Toyota tercel?

Check fuel delivery pressure Should be: at idle 13-20 psi with ignition on and motor off 23-31 psi

Where is the idling switch located on a 1992 Toyota Previa mini van?

The location for the idle switch of a 1992 Toyota Previa mini van can be found in the Toyota Previa Auto Repair Manual 1991 thru 1995. This can be purchased from the Toyota dealership.

How do you adjust the idal on a Toyota van?

how do you adjust the idle on a 2002 toyota van

How do you adjust idle speed for Toyota supra?

you can adjust it via the idle control valve.

Why is my 1987 Nissan 4x4 pickup idleing high and fluctuating idle?

Look and listen for a vacumn leak under the hood.

What is the idle RPM on a 1999 Toyota 4 runner?

the RPM should idle 700 - 900

High idle Toyota 4 runner?

clean or replace your idle air control valve.

WHY DOES THE 1991 Mercedes Benz 500sl HAVE high idle?

How high is your idle? idle should be 800rpm good oil pressure is obtained at this idle

How do you adjust the idle speed for a 1991 Toyota celica gt 2.2L 4-cylinder It is running at 2000 RPMs?

check your vacuum hoses check your vacuum hoses

How do you adjust the idle on a 1991 Chevy Corvette?

== ==

How do you adjust the idle on 1998 Toyota Avalon?

You dont adjust the Idle disconnect the battery for 10 mins and reconnect and the computer should relearn it idle .

How do you set idle speed for a 1991 Chevy beretta?

The idle speed is set at the factory and is NOT adjustable.

How do you adjust the idle on a 91 Toyota landcruiser?

smash it into the wall

What are common problems for a 1981 Toyota carburetor?

High Idle.

What areas should be looked at regarding a 1991 Capri Rx2 that will start but not idle?

the idle tensioner and or the distributor.

How do you raise the idle speed on a 2001 Toyota sequoia?

You don't. If the idle is not within factory spec there is a problem that needs to be diagnosed, such as the idle speed control unit for example.

My 1991 tercel idles very high whats causing this?

look on the throttoe body and back the idle adjusting screw out the screw is a flat head some times it is good to take it out and cleane the end off carbon builds up on the scew hope this helps

Where is the idle control valve on a 1995 Toyota Corolla?

It is on the throtle body.

How do you adjust idle on 1998 Toyota Tacoma?

It is nonadjustable. It is controlled by the computer.