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ECU... help?!

organ

By organ
in Corolla / Corolla Sportivo Club

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organ Contributor

organ

Posted
Posted

Hi Guys,

Seached but couldnt find my post a while ago regarding issues with acceleration,mainly when the car hits lift it doesnot always surge forward as it should, also, there is a 'hesitation' as lift kicks in, almost like a stall. This only happens when the car has warmed up, on the way up to optimum temperature, the car functions normally.

I have just noticed one thing in the last week, the rev limiter that stops you hitting lift when the engine temperature is too cold is not working!

I am starting to think that there is simething seriously wrong with the ECU, what do you guys reakon? Enyone heard of anything like this?


Northy Grand Master

Northy

Posted
Posted

as E-gene said tryan ECU reset, also when you said the rev limiter was not working? did it let you run all the way to 8200 in the first cam?


CORZZA Grand Master

CORZZA

Posted
Posted

sounds to me as you may have fuel starvation as lift kicks in.

if its not the ECU check the fuel pump. I had a similar issue with my barina! and the fuel pump was on its way out. There is a way to test it bu it means unplugging the fuel line into the motor. This could be a hassle

CHA54 Grand Master

CHA54

Posted
Posted

I highly doubt it would be the ECU itself. It's very rare to have a toyota/denso ECU fail (unless it's a 15yo ECU with leaking caps...)

Toyota should be able to diagnose it in 5 mins with a scan tool showing the sensor values. Probably got a dodgey sensor somewhere in the system feeding the ECU incorrect parameters.

organ Contributor

organ

Posted
  • Author
Posted

Got a service coming up this week and I have reported the issue for them to fix.

I just took the car for a bit of a spin. To answer your question northy, the limiter kicks in at about 7200, doesnt seem like the hi-cam has kicked in yet. Correct me if I am wrong, but I remember that it used to kick in at about 6200 when the car was new....

Something is not working... could be a sensor or fuel. Sometimes, it is not until I hit lift twice that this issue shows its self,andit isnot until I turn the car off, andback on again that it is ok again, for two lift hits only, then the issue is back again!

51EKA Experienced

51EKA

Posted
Posted

Got a service coming up this week and I have reported the issue for them to fix.

I just took the car for a bit of a spin. To answer your question northy, the limiter kicks in at about 7200, doesnt seem like the hi-cam has kicked in yet. Correct me if I am wrong, but I remember that it used to kick in at about 6200 when the car was new....

Something is not working... could be a sensor or fuel. Sometimes, it is not until I hit lift twice that this issue shows its self,andit isnot until I turn the car off, andback on again that it is ok again, for two lift hits only, then the issue is back again!

It could be your car is not warmed up properly?

For celica... The problem could be a broken lift bolt. But apparently it's not a problem with the corollas.

Umm... Oil control valve not flowing correctly. Or low in oil pressure.

organ Contributor

organ

Posted
  • Author
Posted

OK cool. Will mention all these things to the service centre. Hopefully this time they will fix it.

CORZZA Grand Master

CORZZA

Posted
Posted

cool. will be interesting to find out what the issue is!

xoom Grand Master

xoom

Posted
Posted

Got a service coming up this week and I have reported the issue for them to fix.

I just took the car for a bit of a spin. To answer your question northy, the limiter kicks in at about 7200, doesnt seem like the hi-cam has kicked in yet. Correct me if I am wrong, but I remember that it used to kick in at about 6200 when the car was new....

Something is not working... could be a sensor or fuel. Sometimes, it is not until I hit lift twice that this issue shows its self,andit isnot until I turn the car off, andback on again that it is ok again, for two lift hits only, then the issue is back again!

Ok so from what your saying the car will rev out to 7200 rpm's and lift wont kick in ..... 1 question how long after u've turn the car on have u tried this ?

The reason i ask is because the stivo has a engine safety mechansim where if the ecu doesnt think the car has been warmed up enough it will not let you engage lift and from memory yes it will let u ride the low cam to about 7000 rpm's.

Secondly this might be a good time to ask do u warm the car up or do u just jump in and drive and expect to engage lift ?

Also what state are you in as the guys have regular meets in pretty much all the states on the east coast why dont you come out to one so people can see what your talking about ?

cheers

Bill

lucio_libre Grand Master

lucio_libre

Posted
Posted

It sounds like your engine is too cold and youre in low cam all the way which cuts out at 7200rpm. If the coolant temp is not hot enough the high cam wont be activated, as its a hydraulic system that activates the cam by coolant temperature.

CORZZA Grand Master

CORZZA

Posted
Posted

Yes they are.....you can say that "technology is the only substitute for cubic inches" :)

yeah! i like that quote!

NIKICH Grand Master

NIKICH

Posted
Posted

There is a vr/vs clubsport down here that has a sticker saying "its all about the inches 304" on his back window. Only problem was all his inches couldnt keep up with the sportivo

MR22ZZ Grand Master

MR22ZZ

Posted
Posted

There is a vr/vs clubsport down here that has a sticker saying "its all about the inches 304" on his back window. Only problem was all his inches couldnt keep up with the sportivo

I've seen him and I showed him my ***** too :P :lol::lol::lol:

Northy Grand Master

Northy

Posted
Posted

There is a vr/vs clubsport down here that has a sticker saying "its all about the inches 304" on his back window. Only problem was all his inches couldnt keep up with the sportivo

I've seen him and I showed him my ***** too :P :lol::lol::lol:

poor guy will be scared for LIFE after seeing that :P

NIKICH Grand Master

NIKICH

Posted
Posted

There is a vr/vs clubsport down here that has a sticker saying "its all about the inches 304" on his back window. Only problem was all his inches couldnt keep up with the sportivo

I've seen him and I showed him my ***** too :P :lol::lol::lol:

No all we need is Zee to show him and the guy will never pop his head up again

CORZZA Grand Master

CORZZA

Posted
Posted

i thought those club sports were powerful!

organ Contributor

organ

Posted
  • Author
Posted

OK just to clear up the confusion:

1. Car is cold, rev limiter kicks at 7200 (I thought it was meant to be 6200)

2. Car warms up ..

3. Car is at optimum temp, issue starts happening after hitting lift twice

4. Switch car off.

5. Car is at optimum temp, issue starts happening after hitting lift twice

6. same as 4

7. same as 5

etc etc

Im in SA by the way.

CORZZA Grand Master

CORZZA

Posted
Posted

SA as in South Australia or South Africa?

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