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| Forum name | Turbo/Nitrous Tech |
| Topic subject | Need help w/my Fuel Pressue settings!! |
| Topic URL | https://forums.2gnt.com/dcboard.php?az=show_topic&forum=i8&topic_id=25340 |
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25340, Need help w/my Fuel Pressue settings!! Posted by Lee, Jun-26-02 10:30 AM My check engine light came on, so I went to autozone and it was code 171 - too lean. I went home and checked my fuel pressure and it's at about 35 PSI with full vacuum and about 50 PSI without at idle. Isn't this where it's suppose to be? Could something else be causing the code? | |
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25341, RE: Need help w/my Fuel Pressue settings!! Posted by XtremeRS, Jun-26-02 10:43 AM If i''m not mistaken, idle fuel pressure with vacum, should be around 50-55 psi up to 0 Hg's...35 psi at idle is too low..i'm surprised the car even ran good at idle with that pressure...try and adjust the idle pressure with the vac line connected, and get it to about 50 psi. I'm not really sure why vortech says to adjust idle pressure with no vac..i guess maybe to get the pressure close until you start the car for the first time after installing it...my guess anyway..i'm sure others can give you more info.. | |
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25342, RE: Need help w/my Fuel Pressue settings!! Posted by Lee, Jun-26-02 01:17 PM Alright bro, I up'd the pressue to about 55 PSI with the vac. line connected. Will the light go off by itself, or will I need to get it reset? | |
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25343, RE: Need help w/my Fuel Pressue settings!! Posted by XtremeRS, Jun-26-02 01:26 PM Reset the ECU by disconnecting the negative battery cable for like 10 seconds, then reconnect it. This erases all codes in the computer. Your light shouldn't come back on. If it does, and your fuel pressures are ok, then something else is wrong. When i was re-installing my Cartech FPR, after i took it apart, the fuel pressure was like at 30 psi at start up..Barely even wanted to run..With the probs i have been haveing, adjusting the idle pressure to anything under 40 psi, the car would not run very good at all..haha, i'm surprised you didn't notice any idle problems with it at 35 psi :wary My car seems to run the smoothest at idle with the pressure around 50 psi at around 16 Hg's of vacum. | |
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25344, RE: Need help w/my Fuel Pressue settings!! Posted by HiOnPSI, Jun-26-02 05:00 PM Ehh, why worry about resetting the ECU. My check engine light comes on half the time, goes off half the time. When i've been messing with the fuel pressure settings, i'll find my car struggle to live around 25psi at idle, but have a few times came home to a 38psi idle pressure. Stupid FPR. | |
