1994 WRX Replaced maf and filter.

Hi my maf went, and ive replaced it with the same type green label. Bought a new air filter too its a spoung dome one.

The car will now go over 20mph. So the maf must be working.

But the car is not constantly idle, its like reving then stops reving then stops. But not stop as in cuts out. It always stays over 1,000 rpm. When I put my foot on the gas it doesnt respond like it use too.

It feels like when I put the gas down it might conk out.

Anyone know what this is.

 

Reset ecu (disconnect the battery fo an hour) or take it to a garage to reset it using a Select Monitor or manually do it Scoobypedia | Trusted knowledge for everything Subaru | Scoobypedia / Scoobypedia under the ECU heading.

 

do the reset

 

when i disconnect live, it still acts funny. do i have to disconnect both black and red. if it still doesnt work ill have to try the manual reset.

 

Was the maf new or second hand?

Tony

 

Was second hand off another wrx. Ment to be fully working.

The seller hs sold loads and has no neg feedback.

One I bought was Green Sticker / Part no: 22680AA160 / 22680-AA160
Use to have Green Sticker / Part no: 22680AA160 / A36-000 R60

 

I would see if you could borrow a new one a local specialist may be able to help.

 

My mate said it could have been the air filter, so i changed it back to the normal one.

The old maf would cut out, so the old one is defo broken.

New one idles at 1,000 to 1,500 rpm is that right? Im sure my old one idle at 2,000 rpm.

But it sounds choking the exhaust like popping. And when I press on gas to say 2-2,5 rpm it idles back to 1,000rpm or lower.

Im in liverpool/merseyside area if anyones about.

 

MAF is calibrated between 0V and 5V (from no air mass... to max air mass, respectively).

My green MAF idles at about 1.1V and is max'd at about 4.85V (but mine's been remapped to 282bhp).

Yours should see similar figures though... but if running the std 237bhp, it'll prob max at more like 4.5-4.6V.

 

WTF! Doesnt that mean in english I can increase the Volt so it idles higer? how do i do that?

Think my engines 265bhp if that matters its import.

Thanks for your reply and everyones.

 

No. You don't manually alter its voltage calibration - it is what it is.

Check the voltage by using a multimeter on the MAF plug's sensor wire and run the meter into the car...

It should be c.1.0-1.2V at idle.

Get a mate in passenger seat so he can monitor the voltage at high rpm. I'm certain it should be around the 4.5+V mark.

If the voltage is far too high at idle and/or far too low at high rpm, then the MAF is out of spec.

 

https://www.scoobynet.com/general-te...urbo-93-a.html

Welcome to my club buddy.

 

dont know if it matter but i could have bought the wrong one for my car.

Both are green labels for WRX.
One I bought was Green Sticker / Part no: 22680AA160 / 22680-AA160
Use to have Green Sticker / Part no: 22680AA160 / A36-000 R60

 

Not sure of the numbers i will have a look at mine BUT you could try disconnecting the MAF whilst the car is idling it should stall.

 

BTW once warm the idle should be about 850rpm so an idle under 1000rpm is probably correct. Cold start is about 1500.

 

When its disconnted it idles, doesnt stall, and i can drive but its limited to 20mph. Ive ordered a new maf with the same numbers if that doesnt work then go from there.

 

Just got the new maf with corrent numbers, idles 2,000 then after a min goes all choking.

 

THE CAR IS FIXED¬!!!!!!!!!!!!!!!!!!!!!!

Turned out put new sparks in, then becuse i drove it around it covered them in crap, then when i bought a maf it would work but still have a problem, then tested all the coils and maf, then took the sparks out and they where black, cleaned them and its works.!

SO THANKS