Help Needed

[j10 dly]

Hey there,

Im having a problem with my 98 Classic Impreza, the Check Engine Light has been coming on, it started on Saturday Morning before we left Lanark to convoy down to ProDrive, since i had been looking forward to the gathering for so long, i decided to risk it anyway and make the journey (even if that meant coming home on the back of an AA lorry)

Thing is as soon as i was on motorway and built up speed it would go off again, then when we hit any sort of slow moving traffic it would come back on, so im thinking so sort of Air Flow problem.

Drooped car off today at normal machanic i use, and he has said his Diagnostic copmuter will not read subarus, he has phoned around other people and the same thing, does this mean i will have to go to dealership or anyone else out there any ideas what problem may be.

Cheers

James

[craigy]

http://www.saxonfields.freeserve.co.uk/Sco...Diag%20Page.htm

very helpfull this,

could be MAF

[j10 dly]

Cheers mate for that link,

I was thinking the MAF myself, but thing cant find out what the actual problem is until car can get hooked up Diagnostic computer, and that seems to be the problem finding one that reads subarus (without having to bite the bullet and go to dealer)

Cheers

James

[emoe]

Your 98 uses the OBD1 system so most mobile and shop mechanics use the SNAP ON MODIS system which is only OBDII

if you can find a mechaninc that has the old snap on system or an older OBDI reader youll be fine.

Just as craigy said, you can check your management yourself.

Under the dash right under the steeringwheel, (get your head down there and look up under with a torch) youll see the two black and two green connectors.

Connect them together, Do the black first, and watch the engine light, the flashes are the fault code in the memory. check what that relates to and youll find your problem.

To reset the ECU, connect the green ones as well and drive the car then disconnect all and youre reset. If the fault is still there the engine light will come back on and doing this again will throw you that code too.

Hope you have luck in this,

[j10 dly]

Thanks mate for that advice

I went out and connected the 2 black wires together, the "check engine" light came on and stayed on with no pulses, then when i disconnected them it went off again.

Any ideas.

Cheers

James

[emoe]

Thanks mate for that advice

I went out and connected the 2 black wires together, the "check engine" light came on and stayed on with no pulses, then when i disconnected them it went off again.

Any ideas.

Cheers

James

Did you do just the black ones?

[j10 dly]

Did you do just the black ones?

Yeah mate, you think I should do green ones as well then???

[emoe]

Yeah mate, you think I should do green ones as well then???

NONO

you should do the black ones and if theres a fault they will flash.

So if theres no flash, maybe that means theres no fault recorded.

Attach the green ones do the reset function as explained and then unplug them all and see if the check engine light cmoes on again.

Not all failures are recorded, some are intermittent and sont get logged as a fault code.