surging through the rev range particularly cold

[adam]

This thread is giving the Melbourne girl intro a run for its money

LOL.. i was just thinking today about the 2 longest intro threads

what's that... you're not sure which one's they are?

let's see.. the PHAT is pretty good @ 27
EXPLICIT is a male monster @ 49 although he did kinda include his work in progress and everyone was just getting the hang of post whoring
but the clear winners are.....

STUNTGIRL with 58 and, drumroll please.......
LIBERTY _LUV with 65


bloody chicks....

disclaimer: allcommentsaremadetoungeincheekandarenottobetakenasactualfact.spokenbythefunnylookin'dudeintheredshirtandwhitedavenportundies.

[Mano™]

looooooooooooool

[BlackGT]

OK I have driven my car now for a few days and then conclusion is ......

I think the cold starts are better but still is a little problem. Though the problem I had of it acting up throughout whether cold or hot is now gone. I also thing they slightly better tweaked the tune but its back to what it was essentially.

[BlackGT]

How did you guys go with this problem?

[Spec B Wgn]

found this also...

Could be ur coolant temperature sensor. car didnt want to start when cold and would hunt and almost stall for the first minute or so, but once warm was fine and would restart straight away. Changing the CTS fixed it instantly. Apparently when that isnt working the ecu doesnt change timing and injection to allow for the colder engine until it warms up. Sensor was about 40$ from subaru.

food for thought ??

[BlackGT]

I believe my problem still exists even though it's not as apparent. I need to write to MRT and let thrm know but I don't want to hear that it's going to cost me $$ or they can't find a problem.

Can I get this coolant sensor and replacement myself?

[Spec B Wgn]

another suggestion.... copied from another forum

Could be your Idle Air Control.

Go to your dump pipe, disconnect you o2 sensor. This will not damage your car. Some exhaust dump pipe designs dont use an 02 sensor.

This is a FREE check. Go to the dump pipe, look for a 100mm long cylinder object screwed into your dump pipe, follow the plug connect to the device (the 02 sensor) and unplug it. Drive around on next cold start with it disconnected. If it doesnt help, then i am wrong and sorry for even trying. If it is fine, that is your problem and i was happy to help.

REPCO sell universal 02 sensors that you wire in yourself . Dont cost too much at all.

[05gtwagonman]

Hi Guys,

It has been a while, but I really have had little to report. The car ran on the computer for two days, and the data was sent to HO subi for data reading. This takes time, but the guy who started doing it got "waylayed" for a couple of weeks...

Today finally catching up on some decent forum time I read that the 2.5t models have been put on stop. I guess this could easily have sent the service specialists at HO into a flap...
Anyway, they have discovered some 'anomolies' in the charts sent, and they are collating all the part numbers and all service details to come up with a comprehensive answer.
Short story, I know nothing yet, but they feel that they are about to get an answer that hopefully will get to the bottom of problem...
It also has to be said, that the car is now out of wty, but the problem is pre-existing, and there has been no suggestion of walking away from it cause the wty ran out...
They have my patience now, just, they have been slow, but are still really trying to help. It's just weird that some cars can come up with strange bugs that are so far from the norm that diagnosis and rectification can take over 9 months.

I still think holden/toyota/ford etc would have told me that it works within acceptable perameters and told me to f*&$ off...


A short story for entertainment and as proof:

I once complained that the hand brake in my comodore made it thunk really loudly like the back end was about to rip out of the car if i used it whilst the car was moving!

The service manager screwed his face up and said what the hell was I doing- it is a park brake- it shouldn't be applied whilst driving!!!!

I said that he ought to tell that to all the rally drivers in the world who relied on the same device to keep the car on the road.

He pulled his smart arse pill out and told me that even if I thought I was a rally car driver, that I certainly shouldn't be driving a comodore like it was a rally car...

I resitsted the temptation to punch him, and simply said- "there are many sporting drivers who might choose to use the hand brake to change the balance of a car mid corner as a last ditch effort to control the immense dergee of pig F*%^king understeer your P.O.S.car exibits on a constant basis... And you might try explaining the problem to any of the guys who bought V8's and HSV product to race on a track- see how far your ignorant comment goes to explaning away a technical oversight in product planning then, you smart arse F*&%"!!!!!!

He just shruged and walked off....

[sinist4]

^ nice story at the end hehe

[MishaGT]

Sup Lads,

Just to let you guys know you're not alone! I have also encountered this same issue!! Start the car, let it warm up for 1 - 2 minutes and if I drive up a slight hill the car surges through the rev range, IF I try to power through it and put my foot down it surges harder (like the whole car rocks back and forth). I have to take my foot completely off the acel and then it works fine? First few times it happened I thought it was me being clumsy on the acel pedal but I believe its an actual problem with the car!

[05gtwagonman]

yup that sounds like it... keep an eye on this thread and i'll let you know what happens with mine. Every car is different, it may not come down to the same cause, but I'm sure that the info could give you a starting point... Subaru really want to tell you that the car is working within tollerances, but these problems can often be diagonsed by one pioneering customer, so if it helps I'll feel good about having shared my experiences...

[05gtwagonman]

Ok,

Still don't have all the answer. They ran another diagnostic run, changed the AFM, did another, in total about 4 runs apparently. The mech at this end feels that the next step is to permenantly change the AFM (my old one went back in pending authorisation to change under WTY) and look at the data being thrown then. I'm not sure that anyone really knows the truth yet. All I can get the guys to say with clarity is that there are anomolies in the data being thrown, and they believe that this could relate to the drop in manifold pressure...

No definitive answer as yet. There really is a problem tho, as when they change things and do a reset, the car comes back doughy ( no data telling it that it is about to get the usual ass flogging I dole out ) but the problems go away until it learns from data etc whilst driving, and obviously gets these weird reading that thow it off.

I'll let you know more as it comes to hand...

[Spec B Wgn]

Ok,



No definitive answer as yet. There really is a problem tho, as when they change things and do a reset, the car comes back doughy ( no data telling it that it is about to get the usual ass flogging I dole out ) but the problems go away until it learns from data etc whilst driving, and obviously gets these weird reading that thow it off.

I'll let you know more as it comes to hand...

when they reset your ecu it takes a while for the car to recognise your driving style .. Its important to get the advance multiplier up to a max read otherwise it will feel doughy all the time. But your right if the ecu is getting funny readings then its compensating somewhere else.. retarded timing, drop in boost etc.

my money's still on the 02 sensor...

[05gtwagonman]

apparently my ECU is not logging one particular type of data. This prompted them to ask twice if I had anyone do work on the car, I assume they would have dropped me like a hotcake had I have admitted doing so... The truth was on my side, no-one has been under the bonnet other than his service guys...
The short of it- they are going to replace the ECU a second time (first one they blew up with a termination of the update download...).
I suspect that this will get them no where. I have a gut feeling that the o2 mentioned so often here, or the AFM are throwing odd data and the ecu is trying to compensate for data loss or misinformation and changing the way things run detrimentally.
I'll keep y'all posted...

[BlackGT]

Thanks..still very keen on this issue