papascooby

Is there anything else that would cause a lean mixture, or is that purely down to the maf ? Ive spent so much money on wasted probable causes that im giving serious thought to selling her and buying another ! I really dont want to waste another £100+ on a gen maf if it could be something else.

Ignore the crappy sentence ending,,,me phone had a fit ! Lol

Well heres the latest. Car back from garage tonight now with temp sensor changed and decat pipe, and yes its stil doing it. The guys in the garage recon its running really lean ! They said that twice now theyve had the lambda sensor out ( once to try another in case faulty, & today when fitting decat ) and both times its come out white ! And apparently on scooby's they say there usually black ? And that their bet is on the maf. Now this was the first thing i changed on the car with a new one, admittedly a non gen, and it was no different apart from the car not idling after 24hrs, on replacing the old one again she resumed normal tickover. Ive sent the maf back in case its faulty & am waiting for the replacement to arrive, but their telling me non gen are crap and not to touch. Any views and ideas on the lean running and non gen maf greatly appreciated guys. A Any views abd thoughts on this

Let's hope so guys, but il not hold my breath ey ? Lol Thanks for all ur support and ideas, il keep u posted.

No mate, nothing shows up apparently. They said theres one or two things that dont run through the ecu ???? These are being tried on tues. And just in case its a cat blocking up there fitting a decat and a temp sensor. To be honest i think their running out of ideas. When they fit the other ecu they said it stopped doing it, but its obviously learned the problem as it was still doing it when u picked it up, and possibly slightly worse if anything.

Well another afternoon spent with the guys in the know ( or dont know as the case may be ). Still no further forward other than they have agreed to offset the price of the ecu i didnt need against a temp sensor sender, a decat pipe and a new mot seems as theres only a month left on her. Cant all be bad ey and if that doesnt cure it at least itl have a few more G G's under the hood ;-)

Cheers Jay, this is very true !! Going back to garage tomorrow so will put all these next ideas to the guys with the tools. I wouldnt care but it runs really well, but power coming and going when lightly on throttle is doing my head in, is it too much to ask for her to run smoooooooth ??? :-(

They recon theyve tested the fuel pressure mate but yes i think its fuel related, ive put a new filter in, wheres the sender unit ? And is it easy to clean ? The fuel that came out of the old filter was like mud !! As for the injectors, there a bit noisy but have had load of cleaner through them.

Well ive not ruled out that either, i sent the 1st one back in case it was dodgy, im waiting for the new one to turn up any day now, may as well stick it in, got nothing to loose by trying it ey ? Do you think a quick ecu reset would be advisable, or just shove it in and give it a day or 2 ?

No, they said theres nowt else it could be, but theyve agreed to look again on thurs, after all i dont think i should be paying for an ecu i dont need ? Labour yes but parts not needed ? Me thinks not.

Ok well £295 later and i just got my car back from the scooby guys, they had her plugged in checked everything and decided that the ecu was to blame ! So fitted another. They said everything was 100%, car pulls like a train they said, one of the Tidiest UK scoobies theyve seen ! Theyve been up and down the rd and cant feel it anymore. Yippee !!! Bril i said. They insisted i took it for a drive with one of them in with me to prove it was fixed..................The cars booked back in for thurs, its still doing it :-(

Well just to update on the surging issues, ive now checked and cleaned all the earths and loom connections and.......... It made no difference. Them i discovered theres a local garage who specialize in subarus, so i took a drive to see them and explained the problem, yep they said, its the knock sensor, common as muck on them to be faulty, apparently. So £40 later i had the sensor changed, and guess what guys ??????........... Its still doing it ! returning to the garage tomorrow. To be continued....

Thats good food for thought mate thankyou, will have a look tomorrow after work weather permitting. Cheers bud

Hi bud, thanks for the input, The plugs are new last week so should be ok, the ones that came out didnt look to old either. I will pull them and double check though, what gap do you recommend, 25 ? As for the boost gauge yes its reading about 0.8 ive changed the plug leads,coil pack, fuel filter, boost pack cleaned and changed, maf replaced with new non gen ( but worse so took it back off ), inlet pipes before and after turbo. Tmic replaced for one off a bugeye ( bit newer and bigger) and dump valve changed from recirc to bov. Problem never changed. Il also take a look at this earth strap, dont remember seeing one when i had the intercooler off ! Cheers bud, will let you know how it goes.

Yes bud i noticed it straight away, wish i hadnt bought it now, but it didnt seem that bad at first. Ive no idea about a remap as ive not had it long, no mods that i can tell of. The plugs are new last week and ive replaced the leads and checked for air leaks. As for earths ??? No, which ones ? And yes think a compression test is in the menu, although the plugs that came out looked all in pretty good nick and a reasonable colour, nothing that would ring alarm bells and shes not smoking either. Confused.com !!

Ive worked in and around garages on and off for years, so ive got a fair idea of what goes on under the Bonnet, thats why im asking for help on this coz its lost me completely and its starting to get expensive buying bits i dont need.

Lol no worries miggs i knew what you meant.

No its not reving hi mate and catching up, its not the clutch. And it does it all the time, all day and night. Tick over a bit rough but never stalling.

Hi thanks for the welcome and reply. Ive changed just about all the pipes in search of an air leak and cant find anything out of order. Its fine on de-acceleration and tickover (although a little lumpy maybe, like a very slight misfire) but it starts and runs fine, boost still comes in when supposed to although when it does it exaggerates the surging pull, literally every second, its like boost brakes boost brakes.........etc etc, but it still achives full boost and holds it, and your speed still climbs quickly. but I get the distinct impression that it wants to clear its throat and really start pulling without the holding back, and ive changed the fuel filter with no difference. Im thinking maybe I could check the flow rate of the fuel pump but is it forced to give me a correct reaing when not under load ie going uphill ???

Hi bud, thanks for the reply. the other maf sensor is new but non gen, thought id go down the cheap rd first. Its crossed my mind that it could be dodgy but I really don't want to have to buy a new one in case that's not the problem.

Oh and yes I changed the MAF and that made it worse, after a week it wouldn't tickover, putting the old one back in cured that problem straight away.

Hi guys Can anyone shed some light on my problem please whilst I still have some hair left ? Ive got a w reg turbo 2000 thats surging ? holding back ? almost methodically whilst accelerating gently, more noticeable uphills or under load !, its like someone switching something on then off at the same speed repeatedly wether engine hot or cold. So far I have fitted a boost gauge to see if its losing pressure and all seems to be fine, ive changed the plugs for NGK 6s. and the plug leads. coil pack, fuel filter, most of the induction pipes pre and post turbo including the t piece (and the restrictor pill is in place) ive changed the boost solenoid pack and cleaned the idle control solenoid, and I only run it on shell v power. Ive tried an ecu reset and ive had a diagnostics chap plug his box of trix in and its not throwing any codes nor has any history of. Its also had another tmc and dump valve chucked at it, but still its the same. If anything since the weathers turned colder it feels worse, can it be oil related ? ive only owned the car a couple of months so as yet not done an oil change. Any ideas anyone pleasssssssse ?????