Overboosting
06 April 2006, 01:10 PM
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Overboosting
Ok, a lad I know is having problems with his Impreza, it's fine in 1st 2nd & 3rd gear, peaking at 12psi, but in 4th & 5th it's all over the place, the boost is jumping around between 10-20+psi and he's getting fuel cut...
The car is basically a standard UK Impreza Turbo 2000 model, bar a backbox, dump valve and boost gauge (fitted recently to see what's happening), it's a V-Reg '00 car, ~70k miles.
Now it's not just a case of the overboost sensor cutting in early, like I've read about in the SIDC FAQ, it's actually making way too much boost, so there's a problem somewhere.
Anyone seen this before?
The car is basically a standard UK Impreza Turbo 2000 model, bar a backbox, dump valve and boost gauge (fitted recently to see what's happening), it's a V-Reg '00 car, ~70k miles.
Now it's not just a case of the overboost sensor cutting in early, like I've read about in the SIDC FAQ, it's actually making way too much boost, so there's a problem somewhere.
Anyone seen this before?
06 April 2006, 01:15 PM
#2
If the boost solenoid and pipework havent been cleaned then I'd start there. I occasionally get overboost when my solenoid is contaminated although it happens in all gears.
06 April 2006, 02:07 PM
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Originally Posted by bruce
If the boost solenoid and pipework havent been cleaned then I'd start there. I occasionally get overboost when my solenoid is contaminated although it happens in all gears.
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Rikki23
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08 January 2001 03:40 PM