Subaru running problems

gdr · Posted: Sat Jun 05, 2010 6:49 pm Post subject: Subaru running problems

just wondering if anyone has any ideas, put Subaru 94 2.2 in the bay, was overjoyed to finally get it wired up (that was a mission) and running it idles ok but as soon as I give it some throttle it either cuts out completely or backfires then cuts out
I have checked the fuel pressure and that is fine, i think the timing should be set fine, all the breather pipes are connected up. Has anyone got any ideas on where to start trying to figure out the problem

ElusiveStranger · Posted: Sun Jun 06, 2010 2:50 am Post subject:

Check your plugs. Sounds like a timing problem - but that's up to the ECU. You're not in control

Sounds pretty obvious but it happened to me, salty spray got into one - parked on a cliff

Report back
_________________
The advice you receive on here is worth the paper it's written on.
Your experiences are worth shed loads to others, including the f'ups - live and learn.
Wouldn't YOU rather learn by someone else's mistakes? So would they.

'78 Bay, 2 litre 091 box, EJ20 NA & the ashtray's on the 'right' side.
I don't lean forward for hills any more Grin

Bugger, missed out on "Live fast, die young"

gdr · Posted: Sun Jun 06, 2010 8:41 am Post subject:

cheers i will try that the day i get back to you

gdr · Posted: Sun Jun 06, 2010 7:14 pm Post subject:

well checked the timing its spot on all leads and plugs are good still wont take the revs Sad

ElusiveStranger · Posted: Sun Jun 06, 2010 10:03 pm Post subject:

Have you checked the fault codes?
_________________
The advice you receive on here is worth the paper it's written on.
Your experiences are worth shed loads to others, including the f'ups - live and learn.
Wouldn't YOU rather learn by someone else's mistakes? So would they.

'78 Bay, 2 litre 091 box, EJ20 NA & the ashtray's on the 'right' side.
I don't lean forward for hills any more Grin

Bugger, missed out on "Live fast, die young"

Griff71 · Posted: Fri Jun 11, 2010 3:16 pm Post subject:

As per elusive stranger check your fault codes first. They are by far the best way to diagnose any fault you have.

I remember when i fitted mine for the first time i had similar problems. I assume as per all Subaru conversions i am aware of you have the original transmitter and key. I had this problem of cutting out when the key was not exactly placed by the transmitter. Engine would run but not physically drive.

I have also witnessed this when not having a speed sensor fitted. Used to read code 33. For whatever reason this problem stopped happening and i have had 2 years of trouble free driving. I still have code 33 now and then but not the actual problem.

This sounds more like what you are experiencing:
Other possibility i experienced recently similar to this is a faulty knock sensor. Engine will idle but as soon as you blip the throttle it pops and bangs or cuts out all together. I can only put mine down to damaged wiring. As the knock sensor wiring has to be aluminium sheaved to stop interference. Not realising this i cut out and replaced with normal wire resulting in code 22 and the problem you explain above. I managed to solve mine by shortening wire back so it was shorter than original but would still plug in. If it is the knock sensor it self these are easy and relatively cheap to replace but check it is faulty and not actually picking up a fault within the engine.

Word of advise: Check and check again everything is plug in and where it should be. This has caught me out so many times. Check!

ElusiveStranger · Posted: Sat Jun 12, 2010 2:27 am Post subject:

Thinking moreso...

Check your throttle position sensor

Following up from Griff's post
Immob, if you have one, will only allow your engine to run for about 2-3 seconds - then it dies
I have no experience about the knock sensor - Griff maybe spot on here.

I fear that GDR isn't going to post back though
_________________
The advice you receive on here is worth the paper it's written on.
Your experiences are worth shed loads to others, including the f'ups - live and learn.
Wouldn't YOU rather learn by someone else's mistakes? So would they.

'78 Bay, 2 litre 091 box, EJ20 NA & the ashtray's on the 'right' side.
I don't lean forward for hills any more Grin

Bugger, missed out on "Live fast, die young"

gdr · Posted: Sat Jun 12, 2010 7:37 am Post subject:

i will do the throttle positions sensor we did a test its ok i got a air flow sensor off a running car was not that the timing is spot on
i did not have a o2 sensor i got one on friday so i am going to put that in the day
cheers for the replys i go and try these things and hope it goes

Griff71 · Posted: Fri Jun 18, 2010 7:16 pm Post subject:

How did you get on? Sorted?

gdr · Posted: Sun Jun 27, 2010 6:51 pm Post subject:

sorry it took so long was away working
still not going the knock sensor is fine the code that came up is the coolant temperature sensor would that do it

ElusiveStranger · Posted: Sun Jun 27, 2010 11:51 pm Post subject:

Just a thought..

Coolant sensor might be telling the ECU that it's hot/cold, so it compensates on the fuel mixture.

I'd imagine if it thought the engine was warm, it would lean the mixture out. You blipping the throttle might make it far too lean.
_________________
The advice you receive on here is worth the paper it's written on.
Your experiences are worth shed loads to others, including the f'ups - live and learn.
Wouldn't YOU rather learn by someone else's mistakes? So would they.

'78 Bay, 2 litre 091 box, EJ20 NA & the ashtray's on the 'right' side.
I don't lean forward for hills any more Grin

Bugger, missed out on "Live fast, die young"