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Old 01-20-2005, 16:30   #1 (permalink)
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2004 4.6 cobra erratic fuel PSI

Hey guys, I have a 04 blown corbra come into my shop with a low speed bog, now since the newest snap on update is 03 I did a generic scan and got codes 190 & 193 high fuel PSI. So I hooked up a pressure guage to the rail and the pressure was erratic from 20 to 40, the 03 spec for fuel psi is 30 - 55 . on the scanner the pressure said around 40psi. This car had 6000 miles on it the kid put on a borla exhaust and the place that did it said he should change the blower! (they saw him coming) he did, now it must be a BBK because it has a BBK air filter and chrome horn. The wiring seems to be ok for the regulator I'm just wondering if the different blower is making the pressure fluctuate so much. Any help would be appeciated. Don
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