Fault code on 99 classic

Hi all just done a engine swap on my 99 classic and feels chocked up plugged it in and got fault code 23 any ideas cheers

http://www.ebay.co.uk/gds/How-to-read-clear-fault-codes-on-Subaru-inc-Impreza-/10000000002365952/g.html




Mass air flow

Changed the maf still the same feels like it's holding back when driving. Could it be the plug fucked?

Could be air leak. Did you reset ecu after you replaced the MAF?

With the plugs under steering wheel?

Or disconnect battery for few hours. Check ya got resistor pill in the vacuum hoses around actuator etc. mine was only boosting actuator pressure til i found it was that.
Try some new plugs also mate. Should be gapped at 0.7 if im rite but should already be gapped if bought new.

Dunno if last message sent but was running fine in the last car

If you have changed maf and its still the same it will most probably be an air leak.

Cheers mate al have a look been looking for 2 days can't find non lol

twits to find, could be very slight aswel. Try disconnecting batt first. It will run weird for about 10 mile til ecu learns your driving style. Mine does anyhow.

Look at all the pipes that are after the throttle butterfly had same problem and found one of the small pipes was sucking air in you know the ones that go to the small pipes under manifold but do check plugs arms ht leads and have u changed coil packs? And is timing correct?

But if your still getting code 23 maf sensor could still be faulty

There no way it could have knocked timing out it was running fine crashed the running fine until put it this new shell?

Have u used original coil pack or one that ce with engine?

The one on the engine could a swap ecu's or would it need coded to the car

Why not try changing coil pack and ht leads and plugs to rule that out

Aye just put new leads and plugs on but will try coil pack. Also coil pack sparking really well

Could it be the ecu?