How to adjust the timing of a toyota corolla 1.6gli 4a-fe engine 1993 model?

no,such thing, the PCM controls idle 100% at all times hot.
when cold some have thermal IAC that runs up to 150f and then PCM takes control via ISC.
this is by uSA laws EPA, here but outside, I am clueless.(so many engine me too lazy to study)
our 1.6L and 1.8L has a dual IAC, (iac and isc all in one)
a thermal IAC and and electric PCM controled ISC
see water pipe pair is IAC
a vacuum leak sure can overwhelm any IAC made.
yes simply cleaning any stuck IAC can fix it.
yes the TV valve in TB stuck open packed up carbon
sure will make idle fail hard !"throttle valve" or stuck throttle cable.
no engine told at all or VIN.
but
sold world wide with
Petrol:
1295 cc 2E I4
1331 cc 4E-FE I4
1452 cc 3E I4 (Van)
1496 cc 5E-FE I4 (Van)
1498 cc 5A-FE I4
1587 cc 4A-FE/4A-GE I4
1587 cc 4A-GZE SC I4
1762 cc 7A-FE I4
Diesel:
1973 cc 2C I4
2184 cc 3C-E I4
---------------------------------------
$62 a pop. iAC.
mounts to bottom of TB
scan the PCM see if idle switch or TPS idle fails.

Please describe the engine code for example 4A-FE, 3ZZ-FE and so on. For your convenience the timing chain installation for Corolla 3ZZ-FE is described below:

Please mention the make (e.g, Toyota), model (Corolla) and engine code (e.g, 4A-FE,).
Any way what ever the make and model may be, please recheck the valve timing and re - adjust it if necessary.
Regards,
Shadab Lodhi

Hi, Just tighten it up abit, the computer will do the rest. Good luck.

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

Corollas made from 1993 to 1997 had two engine choices, the 1.6 liter 4A-FE and the 1.8 liter 7A-FE (click here for many details, comparisons, and diagrams).

Fig. 2: Firing order- 4A-C engine (other A-series similar)

FRAM      P/N  - PH4967
STP              P/N -  S4967
FRAM TOUGH GUARD    P/N - TG4967

MORE BRANDS  AND PART NUMBERS FOR TOYOTA COROLLA 1993
CLICK LINK
http://www.autozone.com/autozone/parts/1993-Toyota-Corolla/Oil-Filter/_/N-j025qZ8gcsg?filterByKeyWord=OIL+FILTER&fromString=search

Click on the following direct, free Link. It has the Timing Belt + Mark Diagrams for your 1991 Toyota Corolla 1.6L DOHC In-Line 4-Cylinder (4A-FE) Engine. Is also has additional - very helpful Instructional and Directional Diagrams.

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

http://www.2carpros.com/car_repair_information/year/1991/make/toyota/model/corolla/1991_toyota_corolla_timing_belt_diagram_marks.htm

what is the torque specs on 4afe 1.6 toyota corolla connecting rod & cylinder head

An engine from another Corolla up to 1997 will fit. There are 2 engines though. 4A-fe (1.6L) or a 7A-fe (1.8L) They look similar but run different Engine managment computers. The 4A-fe uses a 3spd auto trans and the 7A-fe uses a 4spd auto trans. Also some of the wiring may be different.
Hope this helps.