just did a transplant on my
Japanese imported car only to find out there are differences in the engines also the ecu's. basically is it true that i have to change the ecu and that my import needs to be wired for an o2 sensor as the uk spec engines have this but the jap engines do not. how is this done?
help please tired and confused!!! Justina thanks
j-spec ecu needs no 3rd 02 sensor UK does, depends which ecu your running?
I am currently running the jap ecu with the uk spec engine! so dont i have
to get the uk chip and wiring for this o2 sensor for the car to run right? it currently runs but it sticks at revs when you try to go full throttle anything from 2 - 18 secs. should i try remapping instead?
Ah, there you are... Wondered if you were going to venture in here.
I promised Justine that
someone here would be able to help her out, to to add a bit of info, heres the transcript of her post on IMOC...
Quote from: "Justine"Subject: I put uk spec engine in and imported car now the car runs like a mule Help Please!!
I really dont know what else to do !! to cut a long story short I have put a
brand new uk engine in my 1.8 2000 mr2 which is an import! the car now runs
like a 1.4 it intermittently stays put at any particular rev that it chooses
some times for three sec sometimes upto 10 . This is frustrationg me no end
does any obvious faults come to mind?
I took the car to the dealer they told me fault codesPP0017 I think that was the
number anyway!!
Something about mixture too lean!!
This amounts to up to about any 1 of 8 things from the car sucking air to
injectors to mav sensors. I just wonder has anyone else done the same and if so
did you have the same problem after the chang and what did you do to resolve it.
Do i need to get the brain of a uk spec mr2 or do i need to change everything
that is the sensors etc.or just the brain which is an expensive job i am told
by some others say its easy to change you just flick it out and put the other
one in.
Help meI dont know what to do !!
Will somebody please answer???
Now my understanding of things is that there are likely to be minor differences between the J-spec and UK spec ECU's, My first port of call therefore, would be to beg, borrow, or buy a matching ECU for your engine... Anyone care to add?
there are differences between teh ecu's true.
however if teh exhauist system is the same, and the wiring loom is teh same, swopping teh engine should make no difference as all teh sensor positions should be teh same.
I'd liek to know why it needed the new engine as this may be related?
Good point, you could have a defective ECU or, gulp, exhaust system s:shock: :shock: s:shock:
Why was the engine changed in the first place?
You need to check your pre-cats NOW - do a search on Pre cats, which will explain how to do it. If your precats are shot then your new engine will be as well if you don't act quickly. This is assuming you still have the stock manifold.
I'm guessing that pre-cat failure was why the engine needed changing, and because there was no warranty the main cat is till the same.
Quote from: "markiii"I'm guessing that pre-cat failure was why the engine needed changing, and because there was no warranty the main cat is till the same.
I'll go with that...
Justine, did the other engine burn all its oil, lose all power, fail to rev, and then die alltogether?
If so you need to stop running the car NOW! The most common mode of complete failure for this engine seems to relate to the exhaust system, in particular the cat converters. They can get blocked leading to an inability to rev properly and will in a very short space of time demolish your engine. If this is what happened to your first engine, bolting the dame exhasut on to the next engine will cause the same thing to happen.
Basically about 8 months after i purchased the car it started to run on two pistons, yep I got the smoke loss of power and I could just about get it to the garage. At this garage they came to the conclusion that they had only to replaced the top part of the engine that is new head gasket and two new pistons etc etc. Ok this was done and the car ran fine for about 2 months. Then I had cat problems this was due to the oil that drained into it from the aforementioned engine problem. I replaced the main cat (not the pre-cat) and that was the end of that or so i thought. A futher 6 months down the line on my way past manchester some 200 miles from home the car started to lose power and just refused to go. I always do the regular checks before i go on a long journey oil, water and air. I was sure that the car did not need oil, i checked the sensor on the air pipe it was in securely everything i could think off. I called the aa they said my membership only allows them to rescue me 15 outside of london. Trust me they never told me this when they were taking my money! There was nothing else to do other than to run the car home and I did just that! Which made the situation worst. Well with faith in God my car gave up. But the good thing was she never gave up until she got me within 15 miles of London. Got it to the garage only to discover that she had burnt out every drop of oil that i had put in, I had even bought oil in between petrol stations and put in more. The cam shaft broke under the intense heat due to there being no oil in the engine that engine had just had its day, basically in my view!!! i was just fed up at this stage!!!
ok, so I take it at this point you had teh new engine?
was teh manifold replaced when tis was done?
Yep put in the new engine had enough of the saga!! I realised that the engine was slighty slow but didnt realise how slow until the day I had problems keeping up withmy friends totally standard 1.6 megane. That was the begining of my rude awakening. I went on the motor way and did about 40 miles only to see the return of the dredded engine light. since then the speed and the time within.
which i see the engine light has dramatically reduced. the last time i saw it was at a speed of 35- 40 miles in fourth gear going up a slight gradient. However I am pleased to say that i have put injector cleaner in about 48 hours ago and today for the first time i havent seen the light at all(fingers crossed). it drives a lot better!
But the fact still remains the car is still driving like its restricted. i checked the pre cat info and realised that my car has got 02 sensors anyway which is good. So all that i am going to do now is change the ecu to a uk one and inspect the pre-cat.
I also did not change the manifold. Please elaborate on this as i am a bit slow!! thanks
ECU shouldn't be the cause,
with regard to teh manifold, the precats are part of teh manifold. If you didn't change it and our assumption is correct that teh original problem was caused by bad pre-cats, then if there is still part of your pre-cats being sucked into teh new engine, your engine may be about to die again.
either way I suggest you gut the pre-cats.
Ok I will simply gut the pre cat!! I pray that will be the end of it. I'll have it done tomorrow and let you know! Thanks a milliion!!!
I'd also replace the main cat as this has been on since before the last batch of pronlems and may now be dying again.
Adam aka Jap GT300 should be able to sell you a J-spec mnain cat for a reasonable price as I beleive he has a couple instock at teh moment.
Thank you all for your help it all makes sense now. I 'll Let you know the post op results
unfortunately there are no pre-cats on the car so thats a no no. so i went on to take off the main cat its still not revving freely. I have changed the injectors completely and the coils. it seems to falter an 3.5 rpms help please any suggestions? faulty fuel pump I really dont know!
Not that i doubt anything you say, but how are these tests your doing being performed? You flow through the cat, injectors and coils being replaced as if its a everyday garage occurance.
Please don't take this wrong i'm just concerned.
And no, the last thing i would ever doubt is the fuel pump.
Fortunately for me i grew up around a mechanical garage. So i have learned a thing or two aboout cars. Even though I cant seem to solve my own riddle at the moment. to test whether a coil is working simply run the engine test one at a time by disconnecting if you hear a change in the engine you know that the one that you have taken off iss working . If there is no change then the one that you have taken of isnt working its simple. With regards to the injectors i just took them of the other engine that i had cause i knew that they were working fine.
With regards to were the engine falters and is congested you can hear it. The force that comes through the edxhaust is another indicator also. No doubts about that the rev becomes stuttered you just have to read the clock to determine where.
Gonna change the ecu i've had enough!! Will let you know when i've done it if all is solved. Thanks Justina
The clue may be in the point at which the stutter occurs - 3.5k is the typical switch point for the VVTi OCV opening.
good point,sticky OCV valve? oil shortage?, blocked passageway?
or a really good one, you never said if it was a roaddster engine you fitted specifically? the 1zz is available without VVTI.
Something else to consider - Patrick (aka Rogue) has an MR-S that we've been having fun with recently which under acceleration felt like you were hitting a wall at about 4k rpm.
We are not sure what fixed this in the end, as we changed both an O2 sensor and the injectors the same day, but we strongly believe it was the O2 sensor, as the initial run after changing the injectors showed an improvement whereas the O2 sensor cleared the fault completely.
If you have had all of the oil go through the exhaust then the original O2's are definately toast and need to be replaced.
You havent mention what the CEL is that you are getting - that alone is going to be the most helpfull info to diagnose this problem (best of luck obtaining this as the j-spec ECU talks a different flavour of OBD-II which none of the UK dealers can read - Patrick did find a garage in Coventry that can read the code which is what pointed us in the direction of the injectors / O2's)
HTH
OBDII Does pick up certain J-Spec Codes. McCarthy's Group used to have access to the J-Spec version. Not sure if they still have it now that the group is owned by JEMCA.
Are these symptoms not typical of the engine running in safe mode (closed loop) The most common cause of this is that the engine is running lean or rich due to faulty O2's
I do have a main CAT and both Manual or SMT ECU's and piggybacks available, but i would suggest just changing the O2's.
Adam
ok i am going to change the O2 sensors tomorrow if I can get the part as I did have the oil problem. But please hold the piggyback chips for me i need the manual one. Thanks!!
I took the car to pinewood at Brixton Hill they told about error codes( i think) pl171 and 174 which is basically mav sensors air intake injectors etc etc a long list of thins which i have checked. All roads are now pointing to the ECU, Fuel pump of faulty O2 sensors. I dont know what CEL is though! sorry! let me know?!
I took the car to pinewood at Brixton Hill they told me error code i think pl171 and 174 which is basically mav sensors air intake injectors etc etc a long list of thins which i have checked. All roads are now pointing to the ECU, Fuel pump of faulty O2 sensors. I dont know what CEL is though! sorry! let me know?!
CEL is Check Engine Light
i.e the error codes, so yur both on teh same page.
Just trying to get hold of the parts to fix the car 02 sensors etc. I phoned someone at toyota and they said that the ecu does not determine the fuel pressure it only turns the fuel pump on. he also said that if i am running a jspec fuel pump with a uk spec engine that the j spec pump is unlikely to be given it enough fuel as the jspec engine is more petrol efficient by a considerable degree. Help!!! is this true, some of it any of it , somebody?
Can someone with the engine manual take a look in the trouble shooting section and dig out the codes above, mines at Adams, and I'd like to be able to take a better guess at this problem
Quote from: "justyna"Just trying to get hold of the parts to fix the car 02 sensors etc. I phoned someone at toyota and they said that the ecu does not determine the fuel pressure it only turns the fuel pump on. he also said that if i am running a jspec fuel pump with a uk spec engine that the j spec pump is unlikely to be given it enough fuel as the jspec engine is more petrol efficient by a considerable degree. Help!!! is this true, some of it any of it , somebody?
Load of bollocks. s:roll: :roll: s:roll:
m http://members.cox.net/dbatchelor2/obdiicodes.pdf (http://members.cox.net/dbatchelor2/obdiicodes.pdf) m for codes
It's running lean on both banks. Change the 02 sensors. Don't go to toyota they'll charge you a fortune. I'll dig out a place you can pick them up cheap.
m http://gendan.co.uk (http://gendan.co.uk) m £35ea delivered.
Common factors between both banks.
1/ MAF sensor and intake temp unit.
2/ Fuel rail pressure
02 sensors are the only other item that could make it run lean, but at wide open throttle it should be running closed loop anyway, meaning the O2's are ignored by the ECU. i.e. it should run fine when your foots on the floor...
Quote from: "mr-s_turbo"http://gendan.co.uk £35ea delivered.
not bad! and if you dont end up needing them, Sean always needs a ready supply! s:wink: :wink: s:wink:
Quote from: "mr-s_turbo"It's running lean on both banks. Change the 02 sensors. Don't go to toyota they'll charge you a fortune. I'll dig out a place you can pick them up cheap.
Before changing anything I would be tempted to get an emissions test done (if poss without the CATs in place) - if it's the O2 sensors that have kicked the proverbial bucket then the test will show up as running rich (the O2 will say the engine is lean so the ECU will increase the fuel until it reaches max adjustment which then causes the CEL). If it's the fuel rail/fuel pump/injectors the test will show as running lean as the engine is genuinely running lean.
Saves changing bits for the sake of it.
Quote from: "mr-s_turbo"http://members.cox.net/dbatchelor2/obdiicodes.pdf for codes
Or you could use the articles section on the MR2ROC site s:? :? s:? http://www.mr2roc.org/content/articles/OBD2/obd2.php
Quote from: "SteveJ"Quote from: "mr-s_turbo"http://members.cox.net/dbatchelor2/obdiicodes.pdf for codes
Or you could use the articles section on the MR2ROC site s:? :? s:? http://www.mr2roc.org/content/articles/OBD2/obd2.php
It was Grant that asked for the codes, that was just the link i had on my PC at work. s:roll: :roll: s:roll: Perhaps we don't all know everything. s:? :? s:?
I wish i had waited for a response before running to buy a fuel pump!! dont worry it was from a breakers!! but i still feel as if i chucked away 40 quid for nothing! You guessed it it didnt solve the problem!! They have however got the ECU that came out of the same car as the engine maybe i'll swap it for that unless any one wants the pump!!. Ok so the next stop is the O2 sensor which i am just about to purchase. Thanks for the links guys let you know as soon as i fitted them if its worked!!
The engine light seems to appear only when i am going up a gradient when i apply more pressure i suppose and normally when I am in fourth gear. I dont know if this information helps just thought i would add this. thanks again love Justina
s:oops: :oops: s:oops: the o2 sensors all though universal cannot work with my car but thanks for the link though!! does anyone no where i can get theses sensors from. Any one scrapping a car let me know please Thanks!!
Got the sensors now!!! fingers crossed
It wasnt the sensors i was so depressed i had to take a break i'm afraid so now i am back to the mav sensor and the ECU I ran to get the ECU out of the same car but alas no keys. A little dickie bird said that there is space on theECU for two more that is assuming that the person who owned it before hadnt lost both of theirs.
So I tried it if it would start anyway, obviously it didnt!! BUt before i cut the keys i think i'll tryswapping the ecu with someone elses just to se if the problem goes!
Thanks for all your support you guys are great!!
hey everybody it was the maf sensor!!!!! s:D :D s:D
thanks!!!!
Just read this post for the first time. What a saga, glad you solved it in the end though!
Andy
I took a look over this car the other night, and 2 things occured to me...
If you try to install a UK Engine in to a J-spec car, you need to use a J-spec ECU. The UK ECU will require the original keys to disable the immobiliser, which you rarely get with a second hand ECU. Even if you did, the Jspec car lacks the immobiliser reciever in the steering column, and the immobiliser wiring, so it still wont work.
The engine started on the button, and idled fine, but when the throttle was press it either died away until you lifted off again, or revved up a little bit with the most horrendous misfire... The only codes generated were for Lean running on Bank 1 and 2. The BGB lists Fuel pressure, air intake leaks, bad ECU, duff O2 sensors, blocked injectors, and bad MAF sensor as possible causes.
As shitty luck would have it Justyna had replaced everything but the MAF sensor... s:roll: :roll: s:roll:
Another thing was that the car was vaguely familiar to me. Red, Aftermarket alloys, TRD spoiler and 3rd brakelight blanking plate, TRD bodykit, AEM intake, and Team Moon exhaust. It also has one of the very first MR2ROC windscreen stickers in it, from way back when we were on Yahoo! Groups... Very Retro. s:wink: :wink: s:wink:
Quote from: "GSB"I took a look over this car the other night, and 2 things occured to me...
If you try to install a UK Engine in to a J-spec car, you need to use a J-spec ECU. The UK ECU will require the original keys to disable the immobiliser, which you rarely get with a second hand ECU. Even if you did, the Jspec car lacks the immobiliser reciever in the steering column, and the immobiliser wiring, so it still wont work.
Another thing was that the car was vaguely familiar to me. Red, Aftermarket alloys, TRD spoiler and 3rd brakelight blanking plate, TRD bodykit, AEM intake, and Team Moon exhaust. It also has one of the very first MR2ROC windscreen stickers in it, from way back when we were on Yahoo! Groups... Very Retro. s:wink: :wink: s:wink:
Thats Adam's old car then.
Quote from: "SteveJ"Thats Adam's old car then.
Yep, I popped in to see the man himself on the way back...
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