joz8968

iTrader: (13)

Matters not. They're both all but the same, figuratively.

1 bar = 1.02 kg/cm^2

Rutt_Dj

My maf sensor is on, back to normal boost at the min, but i cleared all my codes and its pretty jerky!!!

seaside matt

ah well thats good to know so might be worth trying that.
Did yours throw maf sensor up on diagnostic?

Much difference with quality on the sensors between OE and aftermarket?

cheers guys

Rutt_Dj

It put alot of codes up an md they were all caused by the maf aparently cos non of them are on now. But i re gapped my spark plugs to 0.60 and iv done summit lol its missing on all cylinders now hahaha

seaside matt

so codes are cleared, but now its worse than ever? oh dear!

Glowplug

iTrader: (8)

No. The lambda is effective only in open loop (off boost) and will cause rough idle. On closed loop (on boost) the ECU controls the fuelling directly.

As has been said, get the timing rechecked. A non OE belt may not line up properly and can be half a tooth out.

seaside matt

ok cheers for that b13bat

It was a gates belt and full tensioner kit with waterpump. But yeah I'll have them recheck timing on tuesday when its back in

thanks

Rutt_Dj

Yeh its worse since i re gapped my plugs lol but my mate is a great mechanic nd he told me yesterday that theres no way all the plugs have fuked or all the coils. So he said to take my pick up sensor out and clean it, im gonna try that wen i finish work.

seaside matt

Which ones the pick up sensor mate?

Rutt_Dj

The 1 on the front of the engine, just behind the timing belts etc

Rutt_Dj

My problem seems to be because of a dodgy conection to my maf!!

Can some one calarify that the conector has 5 pins! Cos 1 of my wires (thick grey) looks like its been tamered with!!

seaside matt

mine has 5 pins but only 4 have connections in them fella

Rutt_Dj

Which conections are they? Al up a pic of mine

Rutt_Dj

Rutt_Dj

can some 1 conferm which conections i need cos my car is either in limp mode or not in limp, but jerky as hell and over boosting to 20psi!!

seaside matt

sorry for the horrendous pics but





will my wiring be different to yours tho being a different year and model?

Rutt_Dj

cheers, do all of the prongs have wires going to them?
is urs a classic?

seaside matt

No 4 out of 5 have wires, yeah classic 99 uk turbo

Rutt_Dj

I wunder if mines ment to have 5 wires goin into it!
Mines a 2003 wrx. Since iv fiddled with mine its running smoother but its over boosting like mad, and doesnt feel as tourqe'y

Rutt_Dj

Really stuck, checked more or less everything that it could be, and still no result. Must be an electrial fault

seaside matt

Know how you feel, had mine back in, changed plugs for standard 6rb's no different. Garage says timing wont be out as on the new pulleys and belt they have marks and line up. Only thing it flags up repeatedly is knock sensor would this cause less boost?

ALi-B

iTrader: (1)

At a guess, It'll retard the ignition timing to a default (safe) value. Which can reduce power.

Ignition timing does have a effect on boost, but its not massive unless its retarding the timing by some silly amount.

seaside matt

Yeah that what i thought but wondered if it would really do that much, im peaking at usually 0.5
But then i wondered if it was missing, maybe due to bad leads which causes the knock sensor.
Or when they've taken air box off to do plugs have they damaged maf sensor
Going to have to bite bullet and buy one of them, is there alot of difference between genuine and non sensors? Knock ones range from 30 to 80 quid and they both have year warranty
Cheers everyone

ALi-B

iTrader: (1)

Do not buy a non-genuine MAF sensor. I've see so many fail prematurely or have accuracy problems on various cars its unreal.


Also beware of fakes floating around on the likes of ebay (i.e Denso branded, but just a copy) so only buy off reputable suppliers.

Personally I'd try and borrow a known working one. But if you must buy one, buy a geniuine brand new one.

Don't know about knock sensors, as generally i've not had much in the way of issues with them, but I know for fact that non-genuine MAFs will cause problems.

Rutt_Dj

When i plug my conector into the maf the car runs like a bag of hammers, when i unplug it it sometimes runs safe mode, then sumtimes over boosts, but feels weak

seaside matt

You say you've tried a new maf sensor? I've ordered a genuine knock sensor for mine so see what happens when i fit it

Rutt_Dj

Yeh got it, fitted it, cleared the codes. All came back!!

seaside matt

Was it a genuine one? I'm tempted to replace my boost solenoid too

Rutt_Dj

Yeh a denso. I changed my solanoid aswell and it didnt do a thing lol