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Car cutting out on boost!
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Old 13 May 2012, 07:50 PM   #1 (permalink)
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Car cutting out on boost!

I have bought this '96 impreza off a mate, the car has had an on going boost problem where it would cut out whilst driving it hard on boost, It felt just like an ignition failure. The car prior to me buying it had been into Scooby Clinic to have the fault sorted out. They changed the gearbox speedo sensor and gave it a run on the dyno as well as doing a few other service bits, when mate got the car back it was'nt much better than when it went in! so the week before I bought it he took it to another garage and they told him it was the boost snsor at fault and changed it, but the car still wasn't any better. I told him that I would get it sorted, and when I got the car the first thing i did was change the fuel pump for a Warlbro 255. When I test drove the car it was a bit better but still had the cutting out issue, so I changed the fuel filter and test drove it again, but it was still the same. So after a bit of web surfing I turned my attentioin to the ICV, I tried cleaning it out but it was pretty clean allready, but when I started the car I noticed that it was idling at around 950- 975 rpm, so I tried adjusting the ICV and got the revs down to 800-825 rpm. I then reved the car whilst stationary and kept increasing the revs all the way up to the red line. Fingers crossed I thought I had it sorted, so I took the car on another test drive, and hey BINGO! the car pulls cleanly and faultlessly all the way upto the red line Happy times!
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Old 19 May 2012, 07:18 AM   #2 (permalink)
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Re: Car cutting out on boost!

The car is playing up again, I've taken the icv off and given it a thorough cleaning out. Sometimes it's ok sometimes it plays up, is there a setting for the icv? would it need setting up via the diagnostics/laptop? Can anyone help?
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Old 20 May 2012, 03:20 PM   #3 (permalink)
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Re: Car cutting out on boost!

sounds liek you need to take it back to clinic again mate, itermitent faults are a ball ache cos you can get it looked at and seem to have the fault fixed yet it persists.
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Old 20 May 2012, 06:21 PM   #4 (permalink)
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Re: Car cutting out on boost!

i'm going to fit a new icv mate, I just need to find out how to set the new one up in the correct position.
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Old 21 May 2012, 07:32 AM   #5 (permalink)
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Re: Car cutting out on boost!

you sure you don't need an FCD fitting aswell?..be worth lookin at..
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Old 21 May 2012, 10:10 AM   #6 (permalink)
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Re: Car cutting out on boost!

What's an FCD fitting?
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Old 21 May 2012, 10:40 AM   #7 (permalink)
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Re: Car cutting out on boost!

fuel cut defender...it may not be a boost problem your having,it could well be a fueling issue..
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