Engine Check Light On !

[xMika]

i'm going to my mech place in 1 hour time .. the ECT sensor reached already ... The ECU trouble code shows code4, which is something related to the ECT sensor .. hope it solves the problem :D and hopefully, my fuel mixture will drop back to lean mixture .. if not the increase in petrol prices gonna kill me very soon ..

 

[xtremeleo]

reset the ecu by pulling the efi fuse, let it be for 5 minutes and switch the engine on. it will not run normally at first, but will gradually adapt wit the new changes. then, recheck the ECL and please inform us here sir. the best of luck sir

 

[xMika]

Woohoo ! Just came back from workshop .. DAMN ! The ECT sensor internals already broken and the internal wiring socket crack already !
Have a look at the broken ECT sensor .. Oh ya btw, if I dont reset the ECU, can it detect the changes by itself ? Now I can feel the difference on my car ... not sluggish anymore :D Previously, my engine like drowning when revving up to 3k rpm .. now feels so light !

 

[levin818]

if i know about toyota's ecus, they are very good. but, fyi, i tuned my charged 1300cc engine up using a simple safc2, the power increased 40hp (low boost) on the dyno dynamics. so, u can actually optimize the engine's capability of the engine further wit finer tuning.

a tuned a bone stock civic eg SiR using emanage and gained 19hp on the same dyno, same tuner. all the std ecu usually runs richer, too much to write on dat in dis page, lazy sudehh..

If it is so easy, Toyota and Honda already done it. On dyno, you gain HP, but on emission, engine life span, torque curve, etc, you may be on the loosing side...

 

[xMika]

I think the japs always leave some potential spaces for aftermarket mods on their car based on the owner's liking ... they can save the time and cost for the R&D maybe .. let the street tuners do the job hehe

I prefer low/mid end torque than hi end torque ... acceleration>top speed for me because I'm a city driver .. i guess stock is good enough for me until I graduate as an automotive engineer in 5 years time .. by that time, i'll get myself a performance car haha

 

[levin818]

Woohoo ! Just came back from workshop .. DAMN ! The ECT sensor internals already broken and the internal wiring socket crack already !
Have a look at the broken ECT sensor .. Oh ya btw, if I dont reset the ECU, can it detect the changes by itself ? Now I can feel the difference on my car ... not sluggish anymore :D Previously, my engine like drowning when revving up to 3k rpm .. now feels so light !

Yes the ECU can detect the present of the ECT sensor by itself even though you didn't reset it. However, the error code will keep storing in its memory.
Enjoy your "new ride" :)

 

[xMika]

I reset my ecu already hehe .. then i bridge the TE1 and E1 again to check for error codes .. it blinks one time per interval .. which means its running in normal condition :D YAY !!!

 

[xtremeleo]

If it is so easy, Toyota and Honda already done it. On dyno, you gain HP, but on emission, engine life span, torque curve, etc, you may be on the loosing side...

its all in the tuning sir, my ride was tuned and lasted for 7years dah.. torque is 203Nm on the dyno dynamics, considering the std reading is 150Nm on engine, i dont think iam losing anything, at least not yet..

---------- Post added at 09:19 PM ---------- 6 hour anti-bump limit - Previous post was at 09:18 PM ----------

I reset my ecu already hehe .. then i bridge the TE1 and E1 again to check for error codes .. it blinks one time per interval .. which means its running in normal condition :D YAY !!!

good for u sir, yay indeed

 

[xMika]

Thanks extremeleo and others for being here all the time and giving some tips and advise :) Really appreciate it especially the ecu code checking method ... if you didnt tell me about it, i think the problem will still be there for a few more years :(

So, how to increase the torque ? 150Nm to 200Nm ? Tune which part ? Fuel mixture and ignition timing?

 

[WHT3300]

wow, congrate. problem solved :)

 

[xtremeleo]

err, just tuning it up sir, dats it. mine is a 4efte, its a charged 1.3liter sir

 

[xMika]

wow you drive a starlet GT ! cute and furious car :p

I'll try to ask my mech what he can do to improve my car

 

[levin818]

its all in the tuning sir, my ride was tuned and lasted for 7years dah.. torque is 203Nm on the dyno dynamics, considering the std reading is 150Nm on engine, i dont think iam losing anything, at least not yet..

150Nm to 203Nm? Its 35% up! It can't be overlook by the Toyota engineer.

When come to commercialise the product, especially a life threathening machine like vehicles, reliability always come first. Therefore the ECU is design in a way that to support the engine w/o giving any problem. Not to mentioned the friendly torque curve, engine responsiveness, eco friendly emission, etc. To meet all this critirials, a safety margine has to be establish. This is the reason why stock engine only produce 150Nm. Because this is a "well balance" output.

 

[xMika]

Yeap. Reliability is most important aspect in an automobile. But if you tune it correctly, the engine should be able to handle the extra power right ? I think the stock engine block is made to able withstand another extra 30% (smart guess) output power to improve its reliability and lifespan..

Btw, do you care about emission control ? Many ppl remove the cat-con and use double bullet instead .. sigh..

 

[levin818]

I am running my 20V with cat-converter. And i know that not many of you guys doing it. Cat-converter reduce the emission and safe the ozon layer and give better living environment to our childrens. My last check on my emission few years back, with cat-converter the CO2 level is at 0.01%. Without cat-converter, it raises to 2%! This is 200 times higher!
If yours doesn't have, by hook or by crook, pls go get one!

 

[xtremeleo]

150Nm to 203Nm? Its 35% up! It can't be overlook by the Toyota engineer.

When come to commercialise the product, especially a life threathening machine like vehicles, reliability always come first. Therefore the ECU is design in a way that to support the engine w/o giving any problem. Not to mentioned the friendly torque curve, engine responsiveness, eco friendly emission, etc. To meet all this critirials, a safety margine has to be establish. This is the reason why stock engine only produce 150Nm. Because this is a "well balance" output.

err, i still have the dyno chart in millennium motorsports' pc if u wud like to look at it sir. its not a matter of they overlooked the potential of the engine sir, but rather, being toyota, they put too much buffer in the original tune. fyi, toyota ecu's always run on the rich side of tuning, so power dat is able to be generated is sumwhat so-so je.. iam sure iam running a leaner mixture then what u r running, so if comparison have to be made between emission, iam running better then urs i suppose.

ive supervised an evo3 modifications dat makes out [email protected] on the dyno dynamics (dats REALLY at the wheel fyi, compared to the std 276hp on engine), and it passed emission when we went for inspection in puspakom under Jabatan Alam Sekitar's order. it passed wit flying colours witout a cat-con sir, so fine tuning is also a good idea for the environment fyi

 

[lkeong88]

I think you are looking at the wrong figure, if you put Cat con the CO2 level should increase because it converts most of the CO to CO2, thats the function of cat con

 

[levin818]

lkeong, yes its CO! My mistake!
From Wikipedia "Vehicle emissions control":
Carbon monoxide (CO) - A product of incomplete combustion, carbon monoxide reduces the blood's ability to carry oxygen; overexposure (carbon monoxide poisoning) may be fatal.

For someone who want to get more info, you may search "Catalytic converter".

xtreme,
Without cat-con also can passed the test? As what i know, without cat-con you cannot enter S'pore. The reason is simple - it polute the environment. But how it can passed puspacom test, is an interesting story. And its very clear that, puspacom has different measurement standard with what they should have.

 

[xtremeleo]

the test was done by jabatan alam sekitar sir, with their testers, in a puspakom. the engine passed WITHOUT a catalytic converter, like i said, its in the tuning