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help engine jerk and code 45 came up, boost no constant
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Old 24 Aug 2008, 03:51 PM   #1 (permalink)
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help engine jerk and code 45 came up, boost no constant

My car is GC8D STI,
mod LIST:
Walboro fuel pump 255L,
Exedy hyper single,
K&N FILTER (newest version which is upside down mean the shape)
Sard Fuel Regulator 2.8 bar
HKS SSQV 2
NGK IRIDIUM BRK7EIX-11
Blitz plug cable
Boost controller 1.0 BAR

The engine check code have been occur on my car Code 45 which indicate the pressure sensor and boost control solenoid valve failure. As My car react okay when ram rpm from 0rpm to 3000rpm, But when boost come the car jerk.

when i reach peak of the boost 1.0 bar the turbo boost will be drop at 0.7 bar and maintain at there for a while and then boost back to 1.0 bar. could failure of pressure sensor and boost control solenoid valve causes this?

My option is can i install AVC-R pressure sensor and boost control solenoid valve as replacement of my stock item? TQ

my stock pressure sensor(the cable actually plug to the pressure sensor only i taken out for yourguys to see clearer picture)


my stock boost control solenoid valve


Have disable when boost gauge is install (will this effect my car also?)
wastegate control solenoid

Last edited by limfk7; 26 Aug 2008 at 12:41 PM.
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Old 29 Aug 2008, 10:43 AM   #2 (permalink)
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Re: help engine jerk and code 45 came up, boost no constant (solve)

Quote:
Originally Posted by limfk7 View Post
My car is GC8D STI,
mod LIST:
Walboro fuel pump 255L,
Exedy hyper single,
K&N FILTER (newest version which is upside down mean the shape)
Sard Fuel Regulator 2.8 bar
HKS SSQV 2
NGK IRIDIUM BRK7EIX-11
Blitz plug cable
Boost controller 1.0 BAR

The engine check code have been occur on my car Code 45 which indicate the pressure sensor and boost control solenoid valve failure. As My car react okay when ram rpm from 0rpm to 3000rpm, But when boost come the car jerk.

when i reach peak of the boost 1.0 bar the turbo boost will be drop at 0.7 bar and maintain at there for a while and then boost back to 1.0 bar. could failure of pressure sensor and boost control solenoid valve causes this?

My option is can i install AVC-R pressure sensor and boost control solenoid valve as replacement of my stock item? TQ

my stock pressure sensor(the cable actually plug to the pressure sensor only i taken out for yourguys to see clearer picture)


my stock boost control solenoid valve


Have disable when boost gauge is install (will this effect my car also?)
wastegate control solenoid
Just go check with the apexi they say cannot it will cause error code on ecu
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Old 03 Sep 2008, 07:21 AM   #3 (permalink)
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Re: help engine jerk and code 45 came up, boost no constant

what are you using currently to control the boost?? don't understand your comment about disconnecting sensors to fit a boost gauge??
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Old 05 Sep 2008, 01:46 PM   #4 (permalink)
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Re: help engine jerk and code 45 came up, boost no constant

Quote:
Originally Posted by stockcar View Post
what are you using currently to control the boost?? don't understand your comment about disconnecting sensors to fit a boost gauge??
The problem have been solve, the wastegate solenoid useless since i have aftermarket boost controller on my car, in change my cheapo mechanical boost controller to AVC-R the problem have been solve, i think is the "superpower mechanical boost controller" faulty which cause my car jerk.
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