randomly cut out...help
#1
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randomly cut out...help
Hi, i was randomly driving my 2000 Impreza 2.0 turbo AWD the other day when it just randomly cut out. I pulled over and tried to restart. it sometimes starts and sometimes doesnt. When it does start iit refuses to rev up, wont idle and sounds really really rough coughing and spluttering and popping. I changed the plugs, changed the fuel filter, made sure fuel is coming out the filter when cranking and priming, but still it wont run right if at all. Tried 3 different maf sensors all the same situation, changed the TCS still the same. Smoke tested all ok. When i spray carb/injec cleaner into the filter it runs alot better, so its almost as if the engine is being starved of fuel. Really lost for what to do next. Any ideas?
Thanks
Thanks
#3
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No CEL codes, ive got spark on all 4 plugs, and wouldnt spraying carb cleaner in filter make no diff if it was the coil pack. Idle control valve has been change for a known working one. I still have standard Fuel pressure regulator on the car....is there a way of checking them... i will try source a known working one to replace and see if this makes a difference. Battery is good, holds charge and a good voltage. Have had a set of jumpleads on the engine and to soild ground points to check in case it was poor earth... still the same. Really am lost as to what to try next. Ive had the pump out to clean the bag/filter and to make sure all fuel lines are clear.
#4
18 June 1815 - Waterloo
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Have a look at the 8 pin multi plug under the bench seat on the drivers side normally white. They are prone to break up and give the symptoms you have indicated. The connector is under the rear seat on the drivers side, and is commonly covered with a thin black foam piece so it doesn't rattle, move around. Typically it's near the front of the back seat sill.
I know, it happened to me.
Or the coil pack breaking down when it gets warm.
I know, it happened to me.
Or the coil pack breaking down when it gets warm.
Last edited by The Trooper 1815; 06 May 2015 at 08:22 PM.
#5
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I will check for the plug tomorrow when im back at the workshop. Fingers crossed it will be that as im at wits end with it. Car cant get up to temp as wont run just coughs and splutters
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#12
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Hi, is there a way of by passing the alarm/imob? I looked under the rear seat and only 2 plugs, both for fuel pump and sender. Gonna get pressure read on fuel rail.
#16
18 June 1815 - Waterloo
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Keeping it simple,
1. Is the fuel pumpo priming, can you hear it when you turn on the ignition?
2. Take the pipe of the inlet to see if you have flow with the ignition on, put the pipe end in a jar to prevent fires .
3. Do you have flow out of the filter, take the out pipe off, ignition on etc etc.
1. Is the fuel pumpo priming, can you hear it when you turn on the ignition?
2. Take the pipe of the inlet to see if you have flow with the ignition on, put the pipe end in a jar to prevent fires .
3. Do you have flow out of the filter, take the out pipe off, ignition on etc etc.
#17
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Yes the pump is priming and spits out plenty of fuel from where it should go into the inlet, when cranking its the same, plenty of fuel coming out, ive taken the return off and again plenty of fuel coming out.
#18
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Couple of other things you can check,both have given me similar problems on my old terzo.
Fuel filler neck had corroded and was letting water into the petrol tank,easy to visually check,mine got to the point when cornering it spluttered and cut out,also left a nice puddle behind when filling up.
Also the white electrical connecting block to the fuel pump on top of the tank can be prone to melt/short out.
Fuel filler neck had corroded and was letting water into the petrol tank,easy to visually check,mine got to the point when cornering it spluttered and cut out,also left a nice puddle behind when filling up.
Also the white electrical connecting block to the fuel pump on top of the tank can be prone to melt/short out.
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Pump is constant when and if it starts, if it does start it is really rough and wont idle, the second you touch the throttle in the slightest it just kills it. Is there a fuel cut off switch on a classic at all???
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Just has all the plugs off the injectors one by one... had three off at one time and it sounded the same.... its running on one injector. Ive checked for fulse with a noid light (led bulb) and all are pulsing...its just not putting the fuel into the cylinders i guess.... ive had one of the non running injectors out and powered it up and its clicking so guessing its working. could 3 randomly have become blocked? Its the last injector before the return that is working in the engine if that matters