Flat 4x4

Frightening findings !

I also didn't know that the knock correction stops over 5500rpm, which is where my engine went pop. (MAF was CONFIRMED AS OK)

Good luck with International Motors as I many of these failures are unmodified cars (not that is should make a difference). AND I still don't see why owners should have to rely on a Knocklink to check their car for det. MAD !

sonu

I've also had my MAF changed at about 40K miles as car was hesitating badly.

Sonu

simb 2

iTrader: (3)

I while ago my car started to hesitate only in 5th gear, when I wanted to accelerate gradually, this was on 'one' long journey. It has done it on occaision recently, but no where near as bad as that journey. Is this the symptons of the MAF about to expire?

simb

Wouldn't you like to know

If a car was still under warranty would there be a way to cause the MAF to fail? As the holidays are almost here I wouldn't need the car for a few days. I'm sure subaru Assist would come to my aid!

Wouldn't you like to know

EMS, Do you work for a Subaru dealer? I'm concerned because I've experienced the hesitation when accelerating. It's normally just after I've planted the throttle, it goes and then stops for a fraction of a second and then carries on accelerating again.

simb 2

iTrader: (3)

WULTK - same sort of problem I have experienced.

simb

johnfelstead

EMS is an engine mapper in Holland.

http://www.ems-tuning.nl/

EvilBevel

EMS is a very respected tuner (and rally driver) in The Netherlands, he has worked on quite a few cars (hum), and is a very respected name.

He is also (the first in Holland ?) an official EcuTek dealer.

I did ask him to comment here.

Richard, I don't know about IM etc... that's the way it should go, but my main intrest is that people just don't get a large bill like you now have (and Puff, and...). And yes, I do wonder about myself often as well

Fit a knocklink, optionally fit an AFR meter, and you'll know when something is not right in 95% of the cases. I think I paid 150 UKP for the both of them (including separate sensor), we probably spend more on subwoofers or choclats or condoms in a year...

Also: my guess is a good number of people with failed engines will never have known it was due to a dodgy MAF.

I'm past the "ooh but you are scaremongering" stage now, I don't care anymore, but if you read this thread and have a MY99/00, just remember this thread

Flat 4x4

Yes, but my point which I don't think anyone has answered directly is - WHY SHOULD UK OWNERS HAVE TO FIT A KNOCK-LINK (even as a precaution) if they have a standard or Tek2'd UK model ?

How come you DON'T need one on modified VAG 1.8T's ?

EMS

Very simple answer: Because otherwise they will blow!

Mark.

Flat 4x4

Q.E.D !?

Glad I sold it when they put the new engine in now. The 1.8T in the Skud certainly seems up to a lot more than 225bhp...

SlowBoy

iTrader: (1)

Wuss,

Take it down to AnG. Pedro72 had his checked out there and just as well, too, as it needed replacing.

EvilBevel

Flat,

Sorry if this sounds a bit blunt but...

I'll bet you a pint that the MAF in your new found love is ... erm.. the same as the one we are now talking about.

All VAG/BMW/Subaru cars of that era (or most anyway) used the same Bosch sensor. Feel free to correct me.

Floyd

iTrader: (9)

But Rob, didn't Jons' go pop!

F

Theo - Sunscreen!

BigMikeyBoy

I owned an RB5 WRSport last year and had no.3 piston melt, cause was faulty MAF. Now own P1 and again had no.3 piston go bang, again dealer put it down to MAF problem!
Luckily both cars were treated under warranty!!

Mikey

Andy S.

Mine went too on a MY99 Uk turbo, engine ecu had gone into limp mode so only used 3000 revs until I took it in to Prosport in Stockport who replaced it and reset the ECU.
It was obvious there was some thing up as it would not rev at all when you did manage to rev higher it was lumpy as hell. It was like a new car when I got it back.
So maybe I was very lucky that the engine didnot die. I am glad I opted out of the tour of derbyshire now could have been a costly mistake.

SteelX also had his pack up in Wales, he said it was like the turbo had died, and got AA to trailer him home, he took it in to Subaru and it was the infamous "MAF" sensor

trance

Do you have to reset the ECU when you fit a new MAF sensor??

johnfelstead

yes

chrome

did stellX's engine actually fail??

damn

(i met him on the ToD a few months back, and had dinner with him and his missus at the hanging gate..)

mutant_matt

A friend of mine's STi 5/MY00 had 3 MAF sensors in about 8000 miles with an HKS Racing Suction Kit. The first failure was total and the CEL reported the problem and the car went into Limp Home Mode. The second and third failures were subtle and just leaned out and had idling problems.

All three sensors replaced quickly with no obvious problems/damage but he had an EGT gauge which enabled him to see if the car was running lean so it never got dangerous.

Matt.

Flat 4x4

Floyd & EvilBevel

I say Q.E.D re maybe the Impreza electronics aren't very good as:-

(1) I asked them to test the MAF before fitting the new engine and
the MAF was AOK !
(2) It says something to me if people NEED to fit a Knocklink.
(3) Jon's car had done 120,000m and mine had done 55,000 !

You pays yer money, but at least people are becoming aware now of some of the precautions you have to take on some cars, but not other 'less performance orientated?' models

jim litten

Well just to cheese a few people off, my 99 with 45k on the clock at the time, having just been remapped lambda sensor was playing up took garage a month to get new one in carried on driving like a complete nut as normal, lambda replaced ecu reset end up with crappy idle, drive round for another week till new MAF comes in, engine fine no pop, doesn't burn oil and average around 400miles a week, oh and no knocklink fitted! All I can say is its just pot luck! If its gonna go its gonna go!


Jim



Just to add that was just over 12months ago and its got another 20k on the clock now!

[Edited by jim litten - 12/13/2003 1:36:21 PM]

Cheesy Puff

Hi
Ive just changed mine after two local garages told me that my car was perfect and not to worry, but I decided to swap it for a new sensor anyway and it totaly sorted my car out.
The first garage looked at my car obout six months ago so god knows what damage I have done in the mean time, thankfully I didnt blow the engine and its now ok.
My advice is get an AFR guage and keep a close eye on it, mine now reads perfect and drives perfect too.
The garages both denied there was a problem and said I would be wasting my money, as my car ticked over perfect but when hitting say 100mph on boost the car held back.
I even drove to Alton Towers and back in the damn thing like it because they said it was ok, luckily it was just cruising there and back and not on boost.

Cheese...

Andy S.

Chrome, SteelX's engine did not die he was lucky too, The TOD was has first run out after he had his MAF sensor fitted.
I was supposed to be on the TOD but the MAF Sensor had gone so just went to the pub to join up with you guy's for dinner.

chrome

thanks andy.
I probably met you too

( i had the wife and daughter in tow and we sat at Steel's table with a few others.. )

Scott.T

iTrader: (2)

Whats the best way to reset the ECU's on an MY99/00... disconnect the battery overnight or the connect the connectors under the dash type thing.

I used to do the under dash thing with my MY94, but I struggled to find the green connectors and gave up on the MY00. So just disconneted the battery instead.

Idle is fine, but hesitant when cold which is the Lambda (runs fine with is disconneted).
Am fitting a new Lambda over christmas with a seperate earth (instead of earthing using the downpipe), which apparently helps.

P.S I Have a Knocklink and a TEK3 and it only ever flashes the bottom LED. I did have an AFR but blew it up when I tried to re-locate it...so a new autometer is on the christmas list

Re-Bitten Hero

Jeepers and they just keep on coming!

So a question is - why don't the VAG (Audi etc) cars go bang when the MAF sensor fails in this way? Does the ECU spot the excessively high temperatures (mine was around 125C ) and limit the revs and power or something? I can't find any examples on the Audi boards of MAF sensor failure causing engine damage - it always just results in uneven idling and poor power higher in the rev range.

I quite agree, we shouldn't have to rely on after-market things to monitor our cars [img]images/smilies/mad.gif[/img] but, seeing as we do, a KnockLink will shortly be order for me... (to add to the boost gauge, oil temp, oil pressure and EGT gauges...)

Then I can go back to Beemer-baiting .
Richard

[Edited by Re-Bitten Hero - 12/15/2003 7:10:54 PM]

Flat 4x4

RebittenHero

EUREKA! - That is exactly my totally impartial, ex Subaru-now- Skoda 1.8T point , even when putting out the same power !

Flat4x4

GREEN SCOOBY

dont dawes do an AFR guage or do you have to have the whole kit to make this work? do the mafs on earlier cars go as well? i have a k&n induction kit on my 97my, am i at risk? anyone!

Abzdon

Had knocklink on my MY00, was fine until I got Tek2.5 and then lots of red lights. Replaced the MAF and now back to one green every so often

Looks like I was lucky as well!

Duncan..

Edited to add that was at 52k miles.

[Edited by Abzdon - 12/15/2003 9:46:42 PM]