Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: dr1978 on 08 December 2011, 20:37:05
-
Hi everyone I bought a '02 2.2 omega for £400 that has had 2.0 engine put in it, the only problem is when pulling away it has a massive lack of power and it feel like it's lacking power when driving, also the light on the dash with the spanner though the car is on.
Now i think this is all happening because the ecu was not changed at the time and still has the original one in the car, if i change the ecu, key chip, and transponder for a 2.0l one will this solve the problem?
Thanks for your help in advarnce.
-
Hummm some other work must have been done here, 2.0 is non DBW (cable operators throttle body) 2.2 is DBW, the throttle body is electronic.
Do you know whats been done to make this work?
Is it the whole 2.0 engine? Or just the head?
-
You will have to change all wiring harness on engine, some sensors, throttle body, and fit cable for throttle. It is quite complicated, because you will need more parts then only ECU. Have you read what trouble codes you car gives? Long time ago i fitted 1.8l to 2.0l vectra and there was no problems with it. I suggest read fault codes first.
-
Hi everyone I bought a '02 2.2 omega for £400 that has had 2.0 engine put in it, the only problem is when pulling away it has a massive lack of power and it feel like it's lacking power when driving, also the light on the dash with the spanner through the car is on.
Now i think this is all happening because the ecu was not changed at the time and still has the original one in the car, if i change the ecu, key chip, and transponder for a 2.0l one will this solve the problem?
Thanks for your help in advarnce.
The lack of power will almost certainly be a result of the ECU being in 'limp home' mode. Chances are that there is some sensor damaged, missing or incompatible with the ECU.
Changing ECU will be a lot of work with little result. Far better to read the codes and then fix the sensor problem.
Unfortunately you will need either a good code reader or a session on Tech2 to read the codes because the 2.2 doesn't respond to the 'pedal trick'.
The Maxiscan 509 gets good reports on here IIRC http://www.auteltech.com/ms509.htm (http://www.auteltech.com/ms509.htm)
-
Yep, need to get the engine codes read. If a 2.0 has been fitted with the 2.2 management system intact I can't think why it shouldn't work reasonably well, so need to find out if the ECU is unhappy about something.
-
The required work to convert from DBW to cables etc must have already been done as th car is driveable,albeit not running properly.
Dont know a lot about the various ECU,s etc. but I would imagine that fitting the correct ECU for the engine might be a good place to start.Then see if there are other problems to deal with after that. :-\
2.0 ECU,s come up on ebay fairly regularily and are often cheap as chips. :y
Edit - having just read Kevins post, maybe 2.0/2.2 ECU,s are the same,or similar ? :-\
-
The required work to convert from DBW to cables etc must have already been done as th car is driveable,albeit not running properly.
I'm not so sure. That would be a total nightmare.
Dont know a lot about the various ECU,s etc. but I would imagine that fitting the correct ECU for the engine might be a good place to start.Then see if there are other problems to deal with after that. :-\
2.0 ECU,s come up on ebay fairly regularily and are often cheap as chips. :y
There's not a significant difference between the engines that I'm aware of. Doesn't mean it will work. It' s possible the crank / cam sensor wheels are different, for example, but I would be leaving the 2.2 management where it is and finding out why it's not happy. It should run perfectly happily on that, and to convert back from DBW would be a whole world of pain.
-
The required work to convert from DBW to cables etc must have already been done as th car is driveable,albeit not running properly.
Dont know a lot about the various ECU,s etc. but I would imagine that fitting the correct ECU for the engine might be a good place to start.Then see if there are other problems to deal with after that. :-\
2.0 ECU,s come up on ebay fairly regularily and are often cheap as chips. :y
Edit - having just read Kevins post, maybe 2.0/2.2 ECU,s are the same,or similar ? :-\
No, ECU are total different, wiring on engine also different, throttle body on 2.0l omega has cable, on 2.2l is electric. I think everything is left from 2.2l on his car except engine block. So first he must read fault codes :y
-
Ok so I need to get a code reader, do you any of you know a shop where i could buy from rather than ordering online and waiting? also just to let you know the whole engine was replaced.
-
There may be nearby members with suitable readers.
Which ecu is currently in it?
-
The required work to convert from DBW to cables etc must have already been done as th car is driveable,albeit not running properly.
Dont know a lot about the various ECU,s etc. but I would imagine that fitting the correct ECU for the engine might be a good place to start.Then see if there are other problems to deal with after that. :-\
2.0 ECU,s come up on ebay fairly regularily and are often cheap as chips. :y
Edit - having just read Kevins post, maybe 2.0/2.2 ECU,s are the same,or similar ? :-\
I think they are very different :-\
- Drive By Wire (not cable)
- Different immobiliser
- Pre and post cat lambda sensors
If I was putting a 2.0 engine into a 2.2 body I would strip the inlet and exhaust manifolds off the 2.0 engine before putting it in the 2.2 body.
I would use the 2.2 DBW throttle, the 2.2 downpipe & cats, the 2.2 cam sensor, 2.2 crank sensor & the 2.2 mass flow meter.
[edit] having read kevins last post... I hadn't considered that the cam & crank trigger wheels might be incompatible :( [/edit]
-
There may be nearby members with suitable readers.
Which ecu is currently in it?
still the 2.2
-
Thats how looks ecu from 2.2l
http://www.electis-france.com/documents/images/Products/big/142/main.png
And this one from 2.0l
http://www.actronics.eu/en/25pg/ECU-Siemens-Simtec-56-serie.jpg
-
There may be nearby members with suitable readers.
Which ecu is currently in it?
still the 2.2
So someone has refitted the DBW throttles and the coilpack assembly. 2.2 cats etc. So its only the block thats changed?
Any ODBII reader should get the codes out if its the 2.2 :)
-
There may be nearby members with suitable readers.
Which ecu is currently in it?
still the 2.2
So someone has refitted the DBW throttles and the coilpack assembly. 2.2 cats etc. So its only the block thats changed?
Any ODBII reader should get the codes out if its the 2.2 :)
Not to sure if it was just the block that was changed he said that the bottom end went on the 2.2 and and got this 2.0 engine to put in it, all done by a garage.
is it possible to just put the 2.2 head on a 2.0 block and get these problems?
-
anybody know how much VX charge to read codes?
-
Forget your problems currently, lets ascertain what you have, then we can find out whats wrong :)
-
If its 2.2 ECU, get a OBDII reader on it :)
-
anybody know how much VX charge to read codes?
About the same as it will cost you to buy a good code reader. ;)
Whether a main dealer will interpret the results effectively is a moot point..........
The Boy and Kevin Wood both own geniune VX test equipment (Tech2) and know how to use it.
-
Ok so i'll get a reader (tomorrow fingers crossed) and report back with the codes?
thanks for the help so far!
-
**UPDATE**
So I finally got a code reader and scanned for codes and got this:
P0727
P1781
P0340
P1700
I cleared these which made the spanner though the car symbol to go out, I scanned again this time no codes were shown.
I then took the car for a drive and the gearbox seemed fine changing up and down with lots of power like it should, the car does run a bit lumpy more than it did before though and is getting harder to start from cold.
What do you guys think?
Once again thanks in advance for your help. Dean
-
Give the engine a basic service - oil,filters (oil/air/fuel)plugs etc. if its still not running right read codes again.May get something relating to cam sensor/MAF/ Coil pack.
Code 0340 is cam sensor, no signal. That could be the cause of your problems.
-
Yeah I was thinking about the service as well and coil pack.
Do you think gearbox is alright then? maybe something got messed up abit with the engine swap.
-
Ok stupid question alert!!! The engine that was put in my car has not got a throttle cable, Does that mean it's the 2.0 or the 2.2?
again sorry for the stupid question I'm much more use to the V6's ;)
-
Ok stupid question alert!!! The engine that was put in my car has not got a throttle cable, Does that mean it's the 2.0 or the 2.2?
again sorry for the stupid question I'm much more use to the V6's ;)
2.2 throttle body and engine management.
Block could be either....
-
Cool now I know I've got a 2.0 block and the rest is 2.2 I can get my service parts and cam sensor (just to make sure).
Thanks gents!
-
Running "lumpy" after resetting/clearing codes is not unusual at all. The code reset ALSO resets several other things, one of which is the fuel trim. This usually settles down quite quickly as the engine ECU "re-learns" the required settings. In my experience it takes around 5-10 minutes, or a couple of miles, for the "lumpiness" to go and a while longer for the system to fully settle down.
The fact that you've cleared the codes and , other than the "lumpiness" it is running OK is, IMHO, a good thing. Leave it alone for a while and see if any codes recur, (EML light comes back on OR your code reader can read "pending" codes) this will give a far more accurate diagnosis :y :y
Just my thoughts .. nowt else :)
-
Thanks Entwood for the reply it put's my mind at rest a little bit ;D. I just hope everything is ok over the next few days!
-
Yeah I was thinking about the service as well and coil pack.
Do you think gearbox is alright then? maybe something got messed up abit with the engine swap.
A faulty (or failing) cam sensor has been known to cause all sorts of odd gearbox problems on the 2.2s. Do a search on the forum for lots of info relating to this. :y
-
Yeah I was thinking about the service as well and coil pack.
Do you think gearbox is alright then? maybe something got messed up abit with the engine swap.
A faulty (or failing) cam sensor has been known to cause all sorts of odd gearbox problems on the 2.2s. Do a search on the forum for lots of info relating to this. :y
Yeah I'm gonna change the cam sensor as a matter of course, I'm sure it can't hurt :y
-
Don't be tempted to buy your replacement cam sensor from anywhere except a Vauxhall dealership. A number of online sources will attempt to mislead you into believing that they provide genuine sensors. AFAIK the only mail-order supplier of genuine new Vx cam sensors will be andyc, a member on here who works at a Vx dealership. He'll also give you a good price.
-
Just to add to this, I'm pretty sure it's your cam sensor starting to go as I had exactly the same problems. I found that by unplugging it and cleaning the connectors with some spray contact cleaner sorted it for a while but eventually I had to buy a new one.
I did get a pattern one, as I was slightly mislead by an online site. It just didn't work at all when I put it in. I sent it back and got a refund, then ordered a genuine one from andyc. I've no similar problems since (plenty of dissimilar problems though!). :)
-
Just to add to this, I'm pretty sure it's your cam sensor starting to go as I had exactly the same problems. I found that by unplugging it and cleaning the connectors with some spray contact cleaner sorted it for a while but eventually I had to buy a new one.
I did get a pattern one, as I was slightly mislead by an online site. It just didn't work at all when I put it in. I sent it back and got a refund, then ordered a genuine one from andyc. I've no similar problems since (plenty of dissimilar problems though!). :)
Thanks Jimac I gonna try and get one before xmas....I hope :y