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help needed high revs and jerking when driven
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Old 10 Sep 2011, 05:43 PM   #1 (permalink)
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help needed high revs and jerking when driven

hi iv had a subaru impreza awd none turbo 1996 for a couple off days and now its jerking when driven and revs at 1500 on idle iv changed the tps and water coolent sensor as that what came back on the codes but since iv replaced them its alot worse

iv tried to reset the ecu but it wont work at all tried this way

run the car till it gets warmed up.
turn off the ignition.
with ignition off:
connect the two black lugs (skinnier than the green ones)
turn the ignition on but dont engage the engine.
check the CEL for fault codes (count number of long pulses, followed by the number of short pulses), remember that you may have more than one fault so watch it through a few cycles to make sure
turn off ignition and remove key.
connect the green ones up also (now both green and black will be connected together).
turn ignition but dont start the engine.
(under bonnet will whirr and fizz and make all sorts of noises as it runs through its reset sequence - dont be alarmed)
depress accelerator fully and hold for two secs.
release till half way up and hold again for two more secs.
fully release accelerator.
start the engine.
CEL shouldbe off at this point (??)
gently drive the car for a wee while until the CEL flashes at 1/2 second intervals constantly.

problem is CEL is still flashing when started and it hasn't reset it

has anyone got any ideas how to solve this before i take it in to the garage ?
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Old 11 Sep 2011, 10:35 AM   #2 (permalink)
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Posts: 782
Re: help needed high revs and jerking when driven

I reset my ECU by disconnecting the battery and kept my foot on the brake for about 30 to 60 seconds to drain the electric that was still stored. My car is a 99 Turbo 2000.
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