Engine over revving at idle

BOY,that sounds like the EGR is too far open!Un plug it and see.
Maybe getting the wrong signal from the '88 computer.

Also my be a fuel delivery malfunction.
Fuel pump,filter,fuel pressure regulator.

I need to ask more questions,here.

TRY THE KNOB LOCATED ON THE CARBURETTOR TOP WHICH INCREASE OR REDUCE THE ENGINE RPM.OR CHECK FOR ECCELATOR WIRE THAT MIGHT HAVE GONE STUCK. ALSO SEE THE HALF ROUND ROCKER WHICH IS TURNED WITH THE ECCELATOR LOCATED ON THE ENGINE TOP (CARBURETTOR) HOPE IT DID NOT GOT STUCK CHECK IT MOVEMENT. OTHER REASON COULD BE THE CHOKE THAT GOT ENGAGED AND COT COMING BACK IF IT IS AUTO CHOKE OR IF THE CHOLE IS MANUAL SEE THE PULL KNOB NEAR THE STEERING IF IT IS PULLED OUT HAS TO BE PUSHED IN. ENGINE EXCEED ITS RPM WITH THE CHOKE APPLIED. I DO NOT KNOW WHICH TYPE OF CHOKE YOUR TOYOTA IS USING.


JUST FOUND ENGINE MANUAL/REPAIR PDF FILE THAT MAY HELP YOU PLEASE SAVE A COPY FROM THE SITE.
http://celica.nfv.ee/manuals/2ZZ-GE_repair_manual.pdf

Hi
This sounds like a cold start system fault, which is a number of things.

1. Cold start temperature sensor not operating correctly so the cold start system won't work when the engine is cold.
2. The idle needs to be set to the correct RPM of the engine when warm, if it is idling ok when it is warm then this wont be the problem.
3. Spark Plugs are worn and need replacing.

Most case's its the cold start system not operating correctly and if you have a good workshop to take it too they should pick this up quite quickly. Hope this helps, let me know how you get on.

I would think you could go right to any auto parts store

my engine check light on 4age engine dim before start, will not go off after started and slump throttle black smoke from exhaust

If you have the 4afe engine, normally you need to check the idle control valve if it needs cleaning. Check also the timing of the car.

Some possibilities:
--the choke cable or the choke linkage on the carburetor is sticking, holding the revs too high.
--the gas pedal linkage, the pedal cable, or its linkage to the carburetor are sticking.
--the engine computer (if it has one) is failing, or has poor connections, or isn't grounded properly.
--various other sensors (if you have them) could be failing.
--the mechanism (computerized or mechanical) calling for more fuel to the carburetor when the air conditioning (if you have it) is turned on could be sticking or not working properly.
You should be able to test most of these possibilities while the car is standing still, with the engine running. Start with the choke -- have a helper move the knob and see if the engine responds properly, especially in the "off" position. Then have the helper operate the gas pedal while you watch what's going on with the carburetor.
Have your helper turn the a/c on and off. If you see a mechanical linkage to the carburetor move when the a/c is turned on, it should move back to its original position when it's turned off.
If any of these linkages (including the gas pedal linkage under the dash) are sticking, try spraying the affected area with a lubricant (like WD-40). If that doesn't help, spray lubricant into the cables, or replace them.
If all else fails, carefully check all vacuum lines in the engine compartment. An intermittent leak (or blockage) could be affecting engine speed.

youve got a bad horn relay

Choke is round black device on side of carburetor near the top,when engine is cold take lid off air cleaner,see if flap is closed all the way.If not remove air cleaner and adjust choke by manufacturers instructions.Timing is not your problem,it has its own set of problems and symptoms

YOU HAVE AN EARTHING PROBLEM MOST LIKELY A FAULTY EARTH STRAP BETWEEN THE ENGINE BLOCK AND THE CAR BODY [THIS IS A SEPARATE THICK CABLE OR FLAT BRAIDED CABLE WHICH IS ATTACHED AT ONE END TO THE ENGINE BLOCK - USUALLY ON THE CYLINDER HEAD, AND THE OTHER END ATTACHED TO THE FIREWALL OR CHASSIS RAIL] IF THIS WIRE IS BROKEN OR THE ENDS ARE CORRODED OR LOOSE THEN YOU WILL GETTHE SORT OF SYMPTOMS YOU DESCRIBE.

RUN A NEW CABLE FROM ANY POINT ON THE ENGINE BLOCK TO A PART OF THE BODYWORK AND SEE IF THAT CURES YOUR PROBLEMS

N360