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Rpd gauge not reading boost pressure

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Old 10-28-2012, 08:34 PM
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Rpd gauge not reading boost pressure

Hey guys I joined to hopefully get some advice, I have a 09 white ss/tc coupe and my rpd unit is reading everything but boost pressure do any of you all have any idea of why this could be please help.
Old 10-28-2012, 09:19 PM
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Lower MAP sensor or its wiring.
Old 10-28-2012, 09:22 PM
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i had this happened, unplugged my map sensor, let car run till it threw a code, turned car back off. cleared code, and it worked after that. lol idk maybe i just got lucky.
Old 10-29-2012, 06:29 AM
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Ok ill try that today thanks and it looks like the owner before me had a electrical boost controller but took it out before I bought it could this have anything to do with it?
Old 10-29-2012, 09:01 AM
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the cars have a electronic boost controller stock so i hope you didnt remove the stock boost control solenoid...
Old 10-29-2012, 02:31 PM
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I didn't do anything to it I got it used it was a insurance car that had been hit in the front so I got a low mileage car really cheap I've got everything back but this issue and I can't figure it out
Old 10-29-2012, 04:58 PM
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Smile

Originally Posted by themacguy
Lower MAP sensor or its wiring.
Every car I have seen have no boost to the rpd it was the upper map sensor ??? I never have heard how to know for sure which is bad upper or lower map although? I have a spare of both
Old 10-29-2012, 09:14 PM
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Mine said "no data available". It was the lower MAP.
Old 10-29-2012, 10:53 PM
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Originally Posted by ccro62
Ok ill try that today thanks and it looks like the owner before me had a electrical boost controller but took it out before I bought it could this have anything to do with it?
What would lead you to believe this? We're gonna need pictures. I can already tell.
Old 10-30-2012, 08:35 AM
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So does anyone know how to diagnose which map sensor it could be
Old 10-30-2012, 08:59 AM
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Does your RPD say "No Data Available" for boost?
Old 10-30-2012, 01:39 PM
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i thought it was the upper map sensor for boost pressure.
Old 10-30-2012, 02:04 PM
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no the boost gauge shows it just never shows any boost pressure it stays at zero.
Old 10-30-2012, 02:16 PM
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oh...****. then idk i guess it must be map sensors or wiring. how does the car itself run?
Old 10-30-2012, 04:41 PM
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Runs strong and because of the k&n Sri you can hear the bpv loud and clear. At first I thought the turbo just wasn't building anything but you can feel it when u get on it so I'm just kinda dumbfounded right now
Old 10-30-2012, 04:43 PM
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If I figure it out ill be sure to share tho for no one else has to go through so much guess and check work
Old 11-23-2016, 02:02 AM
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Angry R

I'm having the same problem and I just picked it up from the dealership used with just under 70k. Boost on RPD just stays at 0psi no matter how I drive it. Runs strong with no check engine light or codes. Help
Old 11-23-2016, 02:03 AM
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Angry Boost on rpd stays at 0psi

I'm having the same problem and I just picked it up from the dealership used with just under 70k. Boost on RPD just stays at 0psi no matter how I drive it. Runs strong with no check engine light or codes. Help
Old 11-23-2016, 05:59 AM
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Originally Posted by Zack Garner
I'm having the same problem and I just picked it up from the dealership used with just under 70k. Boost on RPD just stays at 0psi no matter how I drive it. Runs strong with no check engine light or codes. Help
He didn't answer back 4 years ago to see what he found so I'm not sure.
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