1988 toyota corolla carburetor idle adjust

Transmission ?

are you allowing the car to warm up first before checking your adjustment screws? have you also checked the timing of your vehicle?

could be anything from timing, idle settings, or possibly idle relay.

If this is the model with the variable venturi, it has a little green vacum box claped under the air filter box, theyplay up a lot, results in bad starting, bad idle, or stalling.

Hope this helps

Problem is carb. Rebuild or adjust properly. If it has anti-dieseling solenoid, make sure it's working.

Too many problems to cause this one. Take to a reputable dealer.

IF YOU HAVE CARBURETOR. IDLE SPEED TOO HIGH NEED ADJUSTING. CHECK ACCELERATOR LINKAGE OR CABLE COULD BE IN A BIND CAUSING HIGH IDLE SPEED.MAKE SURE THE ACCELERATOR PEDAL FLOOR MAT NOT IN THE WAY.CHECK CARBURETOR MOUNTING BOLTS.RETIGHTEN TO MAKE YOU DONT HAVE A VACUUM LEAK BETWEEN CARBURETOR GASKET AND INTAKE MANIFOLD THAT WILL CAUSE HIGH IDLE SPEED.IF YOU HAVE FUEL INJECTION ENGINE LET A GARAGE SET THE TIMING AND IDLE.

Quick explanation of your fuel system:

An automotive fuel system consists of everything between the fuel tank and the carburetor or fuel injection unit. This includes the tank itself, all the lines, one or more fuel filters, a fuel pump (mechanical, electric, or both), and the carburetor or fuel injection unit.
With the exception of the carburetor or fuel injection unit, the fuel system is quite simple in operation. Fuel is drawn or pumped from the tank through the fuel line by the fuel pump, which forces it through the fuel filter, and from there to the carburetor/injection unit where it is distributed to the cylinders.

So with that info...try first to clean your spark plugs.
Next, replace your fuel filter.
After that, depending on a carburetor/fuel injection, try an additive that cleans the injectors. For the carburetor, try a half of can of what is called "Seafoam". It comes in a metal can available everywhere, including Walmart. It is worth the $6-8 and also will "dry" out your fuel from water. Very good product.

After that, get back to us and let us know how your Toyota is running.

Because it's carbeurated they have an electric 'idle up' solinoid (or vacuume) to compensate for rev loss when load is put on the engine caused by the alternator working harder because your using power. It should have a small adjustment screw on the carbeurator to lower the revs. If you have it set too low it will shudder when in drive & foot on brake with headlights on. It should only pick up about 200rpm when lights are on. To find the screw, take the air filter off, run the engine & look for something moving when the lights are turned on & off. Somewhere near the moving bit you will find the adjustment screw. I hope. I'm not sure exactly where it is on that model.

lower your carburetor gas screw adjuster, there must be 1part gas and 5 parts air.