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Top 2GNT Technical Turbo/Nitrous Tech topic #103818
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Subject: "Hahn Stage 2 Idle Fuel Pressure" Previous topic | Next topic
Mitsu_Drvr98Jun-17-08 02:49 AM
Member since Aug 19th 2006
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#103818, "Hahn Stage 2 Idle Fuel Pressure"


          

Hello,
I have a hahn stage 2 kit on my 98 eclipse. Everything was running great for 2 years and all of a sudden a have a check engine light telling me i have low fuel pressure..the fuel pressure gauge shows 43-47ish pounds on idle..the car runs 7lbs of boost and fuel pressure rises as it should just has a really shitty idle but once i get going it fine..ne ideas y this would be happening?? Thanks -Christian

  
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eclipse982nrRSTJun-17-08 05:33 AM
Member since Mar 16th 2004
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#103819, "RE: Hahn Stage 2 Idle Fuel Pressure"
In response to Reply # 0

          

Never in gods name have I heard of a CEL for low fuel pressure.

To my knowledge I dont even see anything that could trigger a code of that sort.

What code is it and who told you thats what it was?

-MIKE-

Stroked 2.2L

  
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Mitsu_Drvr98Jun-17-08 03:44 PM
Member since Aug 19th 2006
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#103822, "RE: Hahn Stage 2 Idle Fuel Pressure"
In response to Reply # 1

          

Hello,

I have my palm pilot using the OBD gauge program on it.. and it reads error code P0171 which is Fuel Trim too lean..but it alternates between this code and Low fuel pressure...at least thats what the program tells me.. the fuel pressure gauge stays constant..any thoughts on whats going on?..component failure somewhere??
Thanks

  
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eclipse982nrRSTJun-18-08 05:25 AM
Member since Mar 16th 2004
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#103824, "RE: Hahn Stage 2 Idle Fuel Pressure"
In response to Reply # 2

          

Originally posted by Mitsu_Drvr98
Hello, I have my palm pilot using the OBD gauge program on it.. and it reads error code P0171 which is Fuel Trim too lean..but it alternates between this code and Low fuel pressure...at least thats what the program tells me.. the fuel pressure gauge stays constant..any thoughts on whats going on?..component failure somewhere?? Thanks


What code is low fuel pressure? I have never heard of anything. And you mean your fuel pressure gauge stays constant, meaning it holds pressure all the time?

Just because you have a lean code doesnt mean its a fuel pressure issue. Do you have a vacuum leak somewhere?

-MIKE-

Stroked 2.2L

  
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Mitsu_Drvr98Jun-18-08 08:48 AM
Member since Aug 19th 2006
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#103825, "RE: Hahn Stage 2 Idle Fuel Pressure"
In response to Reply # 3

          

Yep the gauge stays constant,i am not sure what the code is but i am positive i saw the palm say it...if it comes back ill copy the code down..ill recheck the vac lines to see if its an issue..thank you

  
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boostedclipseSep-07-08 12:05 PM
Member since Sep 07th 2008
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#104234, "RE: Hahn Stage 2 Idle Fuel Pressure"
In response to Reply # 2

          

Originally posted by Mitsu_Drvr98
Hello, I have my palm pilot using the OBD gauge program on it.. and it reads error code P0171 which is Fuel Trim too lean..but it alternates between this code and Low fuel pressure...at least thats what the program tells me.. the fuel pressure gauge stays constant..any thoughts on whats going on?..component failure somewhere?? Thanks


i had the same problem with my ride too.. same code popped up... im running stock injectors with a sfmu (reason being im planning on buying larger injectors soon) i set my idle fuel pressure w. the vac line to 43psi next day the check engine light came up.. scanner said fuel running to lean.. did some research and found out the fuel pressure is supposed to be 53psi with the vac line hooked up.. I cranked it up reset the ecu and havent had a problem since

  
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