Question about 1999 Honda Accord

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My 1999 honda accord will not hold fuel pressure when turned off

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  • ashley milton Feb 13, 2012

    when i go to start car i have to prime fuel by switching on 2 or 3 times is there anything that holds pressure when u switch it off . check vale or something?

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When you turn the ignition off it also turns off the fuel pump and the fuel pressure regulator, so yes you should lose fuel pressure until you turn the ignition back on. What is the main problem?

Posted on Feb 10, 2012

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Posted on Jan 02, 2017

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My 1999 honda acoord won't start


If the starter turns the engine over, then it could be not getting fuel or spark plug voltage.

If not then it could be the battery or battery connections or a loose ground connection on the engine.

It could also be no fuel pressure or the "Main Relay" is bad

Hope this helps.
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Dtc p1457,0107


P1457 HONDA - Evaporative Emissions Control System Leakage EVAP Canister Systemxicon.jpghttp://engine-codes.com/p1457_honda.htmlForum CodePossible causes- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap There is a Honda factory service bulletin with information on how to diagnose the P1456 on the following Honda models:
1998 Honda Accord
1999 Honda Accord
2000 Honda Accord
1998-2000 Honda Accord
symptoms- Engine Light ON (or Service Engine Soon Warning Light)
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The EVAP control system leak detection method improves the accuracy and frequency of the detection by determining faulty components and vapor leakage for each part. The EVAP control system (from the purge valve to the fuel tank) is divided into two parts. One is the "EVAP Canister Side" (from the EVAP two way valve to the purge valve) and the other is the "Tank Side" (from the EVAP two way valve to the fuel tank). There is 0.04 inch leak detection and 0.02 inch leak detection. If the 0.04 inch leak detection results are OK, the 0.02 inch leak detection runs. The P1457 code is detected when the EVAP system has a very small leak.

P0107 HONDA - Manifold Absolute Pressure Sensor Circuit Low Voltagexicon.jpghttp://engine-codes.com/p0107_honda.htmlForum CodePossible causes- Manifold Absolute Pressure harness is open or shorted
- Manifold Absolute Pressure sensor poor electrical circuit connector
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- Faulty Engine Control Module (ECM) When is the code detected?An excessively low voltage from the sensor is sent to ECMSymptoms- Engine Light ON (or Service Engine Soon Warning Light)
- Engine rough idle
- Engine hesitation
P0107 HONDA Description The Manifold Absolute Pressure sensor provides instantaneous manifold pressure information to the engine's Engine Control Module. The data is used to calculate air density and determine the engine's air mass flow rate, which in turn determines the required fuel metering for optimum combustion. A fuel-injected engine may alternately use a Mass Air Flow sensor to detect the intake airflow. A typical configuration employs one or the other, but seldom both.


In some vehicles the absolute pressure sensor is built into ECM. HONDA Technical Service Bulletins for P0107 code1999 HONDA ODYSSEY Electrical System 2000 HONDA ODYSSEY Electrical System1998 HONDA ACCORD Electrical System 1999 HONDA ACCORD Electrical System 2000 HONDA ACCORD Electrical System 2001 HONDA ACCORD Electrical System 2002 HONDA ACCORD Electrical System 1996 HONDA CIVIC Electrical System 1997 HONDA CIVIC Electrical System 1998 HONDA CIVIC Electrical System

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1999 Honda Accord won't start. No fuel pressure, so replaced the fuel pump. Still no fuel pressure, tested old fuel pump it seemed to work fine. Can not locate the main relay?


The relay may be located in the under hood fuse/relay box.
Check your manual for the location of the relay, if listed.
Check for a sticker on the inside of the under hood fuse/relay box for a possible guide.

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index-4l3mo04yvnp2xdvhjfffy5rf-2-1.jpg

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1 Answer

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1 Answer

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1 Answer

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Honda's have very detailed diagnostic info that can be read by connecting the plug behind your dashboard to a diagnostic machine.

getting this done at a proper garage/auto electrician will give you the exact problem and save you from buying the wrong parts to fix it again.

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