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ENGINE RUNS FOR 2-3 SECS THEN CUTS OUT

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Old 12 July 2009, 02:04 PM
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yorkyturbo
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Default ENGINE RUNS FOR 2-3 SECS THEN CUTS OUT

HELP! Was driving my car earlier, the engine cut out, tried to restart engine fires then cuts out after a couple of seconds.Theres fuel getting to the engine and there is also a spark, i've tried disconnecting the MAF still the same? Car is a MY99 type r 2.5 Bottom end with Apexi power fc.
Thanks in Advance
Ryan
Old 12 July 2009, 02:57 PM
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yorkyturbo
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Hi, Just put my old ECU back in, engine now starts with CEL on, Power FC has just ran out of warranty 25/6/08 Is it possible to reset the Power FC ? Would this Help?
Old 12 July 2009, 03:22 PM
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Splitpin
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If the CEL is illuminated with the Subaru ECU, connect the black plugs and tell us what the fault codes are.

It sounds a bit like a sensor has failed, and without its input, the PFC can't run the engine. The error code on the Subaru ECU should clue you in to what's going on.
Old 12 July 2009, 04:07 PM
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kiranbaloo
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Hi there,
This happened to me with a PFC, it is the MAF sensor that is at fault apparently the std ecu is less sensitive that is why it will run.This happened to me quite a few time so in the end kept a spare MAF in the car.Have now gone MAFless with a Simtec.
Old 12 July 2009, 04:20 PM
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yorkyturbo
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BRILLIANT!!!!!! just swapped the MAF over with a spare i had knocking around and shes just fired up! Can put my wallet away now
Thanks for the help guys
Old 12 July 2009, 04:30 PM
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Good to hear you got it running Ryan, but, before you celebrate too much, need to check that the replacement sensor you put in is reading accurately. If it's brand new then no need to worry, but if it's a "used" MAF, it'd be worth getting hold of a new one and doing some comparison runs under boost to check the sensor voltages and AFRs are equivalent.

If they are you can put the new sensor back on your shelf for the next time something like this happens. If not, you leave the new one in place in the knowledge that your engine is running safely.
Old 12 July 2009, 05:15 PM
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Gonna pick a new one up from ZEN tommorow.

Thanks Again mate
Old 11 January 2021, 08:52 PM
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Dannydrogba
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Hi so sorry to jump on this post my car is Subaru impreza 1997 and mine starts then cuts out do you think it could be the same as your the maf sensor cheers
Old 11 January 2021, 09:46 PM
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1509joe
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Originally Posted by Dannydrogba
Hi so sorry to jump on this post my car is Subaru impreza 1997 and mine starts then cuts out do you think it could be the same as your the maf sensor cheers
Don't think they'll be to bothered eleven years later
Take the lid of your MAF sensor and check for dry joints
Forget that I see yours is MY99 get a new one and try it.

Last edited by 1509joe; 11 January 2021 at 09:50 PM.
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