Toyota quad cam vvti timing belt installation

It could be caused by the oil control valve, it's located on the side of the cylinder head, the vvti actuator is the gear on the front of the camshaft, if it was replaced try replacing the VVTi oil control valve. It can also be caused by a worn chain tensioner.

best advice is to get a workshop manual for the engine
next
heads can generally be removed in car
next set the valve timing before removing the belt. check and record the position of the cam timing marks
don't move the crank after the head is pulled

what a night mare job
which 4 cyl 2.4 engine is fitted to that
chain or timing belt

normal cam cogs or
a 2.4 ecotec with VVti cams timing chains
possiblty twin cam

.

Download Link:
2004 toyota corolla factory service repair manual PDF DOWNLOAD

run fault codes to find which sensors have not been installed correctly or are defective. Possible cam/crank position sensor faulty. It is very easy to miss a connection or incorrectly put a connection together.

Maybe this AUGOCOM Engine Timing Tool can help you.

I found this on a google search i hope it will help you as the engine is the same QUESTION: , 2001 Avalon 145,000 miles. Recently developed rough idle when warm. Today produced codes of P1150, P1354. It points to the VVT system. Can a DIY diagnose and repair from home?

Thanks,
John

ANSWER: The P1354 code is for the VVTi malfunction on bank2 which is the cylinder head near the firewall, the 1150 code is for the air.fuel ratio sensor on the same head, the VVTi code can cause the A/F ratio sensor to go out of range, the main cause is the P1354 code which should be delt with first, this can be caused by a worn timing belt that has junped a tooth on the sprocket, this should be checked first, at this mileage if it has never been replaced it may be the problem. If your scanner can read live data see where the engine timing is at.
If the timing is not the problem it may be a bad oil control valve for the VVTi system, to be sure it should be active tested using a diagnostic tool that is capable of doing so, activating the system at idle should cause the engine run rough at idle, if there is no effect on the engine the VVTi is not activated and the problem may be the OCV.

the easiest way to find out the answer is to go to Something like
www.eurocarparts.com

put in your reg No or model & Look up timing chains/belts

Your vehicle does not have timing belt but timing chain. Jack Your engine is a VVTi engine and has a timing chain.