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viper8
Original Poster
1 posts
8 months
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Hi All
signum not starting properly in the morning ,does not tick over good and goes to stall
also getting juddering at high boost
i think it is fuel related ,but dont know where to start
got codes
P0090 fuel pressure regulator control circuit
P0170 fuel trim malfunction
any body got any ideas
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davepoth
19,913 posts
68 months
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It's telling you that there's a fuel pressure problem. Given that it's at idle too it's unlikely to be a starvation issue (pump, blockage) as if there wasn't enough fuel to idle it would likely not drive at all. So my money is on the fuel pressure regulator or the electronics that control the fuel pressure regulator.
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