Hello to all. I just purchased a 2005 Roadster NA, Classic Yellow. Love it. Ive had it 2 weeks now, and last week the check engine light came on. Had Auto Zone pull the code and it was if I rememb er correctly 453. Anyway, it said emmissions fuel pressure to high. Possible fix was a possible corroded wire or a plugged fuel filter/ regulator. I replaced the filter,pulled battery cable to clear codes, and light stayed off for a day but now back on. My question is where is the tank, as it says possible cause for light on is corroded wire on tank. Im assuming there is some sort of pressure switch, and am hoping it is corroded. Does anyone know where it is located. Any help will be greatly appreciated, Thanks,
Dave

 

the tank is that wall behind your seat, but the fuel pump and filter are under the car just inside the pass rear wheel. jim

 

Thanks for the quick reeply. I found the fuel filter, and have replaced it, but was not sure where the tank was as it says possible corroded wire on fuel tank. Im assuming it must be a pressure sensor. Thanks for the info.
What are you driving? Dave

 

did u c my sig.

05 XFire SRT-55
woody's first HE.
needswing duel cai
needswing intake manifolds,
tune from wayne and jerry
code 3 suppercharger pully
hoosers 315 35 17 Drag radials
12.26--1.78 60' 112.95@ 51 degrees
12.32--1.80 60' 112.74 @ 88 degrees

V8 #2011-1-3
removed V6,,adding V8 by Rudy & paul
at accelerated,, new ET to come.

 

I've already been thru this. The pressure sensor has three wires on it, one is 5 volts in, one is ground and one is the output signal. Mine lost it's ground, causing the output to go to 5 volts, indicating high pressure in the tank and setting the light.

With the top up, unlatch the top from the windsheild frame.
Hit the button, the window will go up, the lid will open. Release the button when the lid is all the way open.

Looking into the top storage area, you will see the fuel pressure sensor and fuel gauge connectors together in the top of the tank, center of the car. I had washed the car with the top down and let a LITTLE water trickle into the connectors, corroding them.

I disconnected the connector (the two wire is the fuel gauge, the three wire is the pressure sensor) and cleaned the connectors and pins with alcohol. The light went out in about a day after that!

I used a digital meter on the sensor output and measured the voltage, it was around 2.5 most of the time, but as I wiggled the connector, I saw it spike to 5 volts - cleaning the contacts cured this. Again, it took about a day (actually about 4 or 5 engine starts/short drives and shutdowns) to get the light to reset.

 

I would look at the emissions system for problems. Vapours are kept in a closed system, maybe the pressure in that system is too high.
From the shop manual.

The evaporation control system prevents the emission of fuel tank vapors into the atmosphere. When fuel evaporates
in the fuel tank, the vapors pass through vent hoses or tubes to an activated carbon filled evaporative canister.
The canister temporarily holds the vapors. The Powertrain Control Module (PCM) allows intake manifold vacuum to
draw vapors into the combustion chambers during certain operating conditions.
This vehicle uses a pulse-width modulated purge solenoid system. The PCM controls vapor flow by operating the
purge solenoid. Refer to EVAP Purge Solenoid in this section.

See section 25 page 15

 

Here is a thread for ya:

https://www.crossfireforum.org/forum...itch-high.html

Do'nt miss this link, it educated me enough to understand the system and fix my problem:

P0453 DTC Evaporative Emissions Control System Pressure Sensor High Input

 

Thanks to all. Will look at wires this weekend. Hope trhats it,
Dave