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2000 chevy xtreme 4.3 code 0452 is on..but the fuel tank builds excessive pressure

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  • 79 Answers

Sounds like evap or charcoal cannister. If your like a lot of people and funds are tight you can try unplugging all the charcoal canister lines and blow it out with low air pressure. If possible also the lines between the canister and evap Of you get a lot of dust this should solve your issue

Posted on Apr 02, 2015

  • szanghi Apr 02, 2015

    Just answered

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The evap. emission control may be plugged. Check the charcoal canister and connections for bends, pinching, or crimping from tank to intake.

Posted on Apr 02, 2015

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Have you tried a new gas cap?

Posted on Apr 02, 2015

Testimonial: "No I haven't but I was leaning toward replacing the gas cap.thanks"

  • Terence Merchant
    Terence Merchant Apr 21, 2015

    It was the gas cap,thanks

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Posted on Jan 02, 2017

emissionwiz
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SOURCE: I have a code p0452 low fuel tank pressure. Is the

yes the pressure sensor in mounted in a rubber grommet on the top of the fuel tank. it could be the sensor but the only way to know for sure is have the dealer do a evaporative emissions fuel tank pressure test, they have the special tools to do this, outside shops do not. Have u tried a new gas cap, they can leak and cause the problem, in fact that is very common.

Posted on Mar 07, 2009

  • 14036 Answers

SOURCE: 1991 cadillac sedan deville has excess pressure in

SOUND LIKE FUEL PUMP GOING BAD.BUT CHECK THE EVAP CHARCOAL CANISTER FILTER IF GAS SOAKED REPLACE IT REPLACE GAS CAP MAKE SURE GAS CAP IS THE PRESSURE VACUUM TYPE.ALSO CHECK VACUUM PURGE VALVE VACUUM HOSE TO CARBURETOR AND CHECK VACUUM HOSE TO CHARCOAL CANISTER FOR BLOCKAGE RESTRICTION OR BROKEN AND MISSING.

Posted on Oct 31, 2010

  • 124 Answers

SOURCE: 2002 chevy blazer fuel pump (4 door)

yes you have to drop the tank. you will also need a fuel line tool to unhook the fuel lines. before you drop the tank see if tou can reach and wiggle the electrical connection on the top of the tank. these pumps have a pigtail issue. please rate

Posted on Dec 08, 2008

  • 2 Answers

SOURCE: 2000 chevy pick up died while driving and won't restart?

check the crank angle sensor

Posted on Jan 03, 2009

jgwhomeequip
  • 1902 Answers

SOURCE: how to rmove fuel from fuel tank of 2000 chevy express van?

Some fuel tanks have a drain **** that will allow you to drain all of the gas neatly. If you have a drain ****, it will be located at the lowest point on the tank. Loosen the valve and allow the gas to completely drain.
If your tank has no drain ****, you'll have to drain it by removing one of the fuel lines. The rubber hose that exits the tank at its lowest point will drain the tank fully. It will either be connected to an electric fuel pump, fuel filter, or to a hard fuel line that goes to the front of the car. Loosen the clamp on the end of the line that connects to the gas tank. Pull the hose off and allow the gas to run out of the tank into your container until it is drained completely.

Posted on Feb 07, 2009

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1 Answer

2000 Cadillac Deville DTS 4.6L HO Northstar


Well, I don't think so. The pressure sensor will throw its own code (0450, 0451, 0452, 0453, or 0454). And likewise, the fuel level sender or sensor could also throw its own codes (P0460-P0464).

I'm not sure the level sensor and the pressure sensor are linked together. They are separate on a 2005 buick century, the pressure sensor being at the top of the tank located on the fuel pump module, but Cadillac: anything is possible.

Since you replaced the purge solenoid, there may be a problem in the circuit. The purge should have battery voltage to it with the key on. The ECM will ground the circuit internally when the purge is wanted. One symptom of a purge valve that isn't working or stuck closed can be a whooshing sound when the fuel tank cap is opened, indicating excessive pressure in the tank.
A shop's scan tool could be used to command the purge valve on to check it.

Sep 09, 2014 | 2000 Cadillac DeVille DTS

1 Answer

Car wont start


Code 420 means the catalytic converter is not up to standard, which may not have any connection to your current problem.
The other codes deal with issues concerning the gas tank vent and purge controls which could be causing excessive pressure in the gas tank.
I would want to know if you have normal fuel pressure at the injectors, and if there is excessive pressure building up in the tank.

Feb 20, 2014 | Cars & Trucks

1 Answer

I'm having problems with my 2000 pontiac grand am! It is dying sometimes when idling in park, or while at a stop sign/light and sometimes when i begin to accelerate. The car codes were 0446 and 0452(evap...


The Manifold (Air) Absolute Pressure (MAP) and the Evaporative Emission Pressure circuits are not right. The fact that you car keeps cutting out is a further clue. I suspect that the purge and vent valves on the evap system of being open at the wrong times. This would account for the ingress of un-metered air causing leaning of the fuel mix leading to stalling, it would also account for the expected readings from the MAP sensor and would also account for the evap system errors. To check simply disconnect the evap to intake manifold tube and securely block the exposed ends. This should resolve the stalling and avoid further 0105 error codes. If the evap purge valve is at fault then the 0452 should also disappear, however if the evap vent valve is at fault the error code will persist.

Jul 26, 2010 | 2000 Pontiac Grand Am GT

2 Answers

Unable to put gas in at at gas pump


SOUND LIKE EVAP SYSTEM FAILURE.CAUSING EXCESSIVE FUEL PRESSURE VAPORS BUILT UP IN FUEL TANK.TAKE IT TO DEALERSHIP THEY HAVE TO USE DIAGNOSTIC EQUIPMENT TO FIX.THIS IS A LITTLE TRICK TO GET GAS IN TANK BACK OUT SPOUT A LITTLE NOT MUCH TO LET VAPORS ESCAPE WHILE YOU PUMPING GAS.YOU NEED TO FIX.FUEL PRESSURE VAPORS WILL BUILD UP ENOUGH TO BLOW UP FUEL TANK ESPECIALLY ON HOT DAYS.

Mar 06, 2010 | 2001 Chevrolet Blazer

1 Answer

2001 saturn obd code of 0452 what is the problem and how do i fix it


Hi,

P0452 - Evaporative Emission Control System Pressure Sensor Low Input.

Evaporative Emission Control System Pressure Sensor Low Input indicates a low voltage problem in the Fuel Tank Pressure Sensor (FTPS). What the fuel FTP sensor does is convert fuel tank absolute pressure into electrical signals and inputs the signal to the ECM/PCM, (Computer).
First thing to do is make sure the gas cap is good and tightened properly. Then check the vacuum lines and wiring at the FTPS (Location-Fuel Tank) to be sure they are good, clean and tight.
Barring a wiring problem it can be a bad FTPS or PCM.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Oct 07, 2009 | 2000 Saturn SL

1 Answer

Will not start, do not smell any gas


i had a 2000 chevy venture wbe. i had to replace the in-tank electric fuel pump at 107,000 miles. open the fuel door, remove the gas cap and have someone listen closoly. try to start and if you hear a HUMMING sound once the key is turned, then fuel pump is working. if no hum, the fuel pump is bad. upon start-up it kicks in 2-3 seconds to build up fuel pressure...

Sep 20, 2009 | 2000 Chevrolet Venture

1 Answer

My 2000 chevy 350 skips while drivng on highway no code


A fuel injector cleaning should be performed. Varnish build up will cause the injector to spay an abnormal pattern. The fuel will not be atomized properly and cause a missfire condition. Also, excessive carbon build up on the intake valves will absorb fuel meant for the combustion chamber that will cause a minor lean missfire condition.
Your favorite repair shop with the proper injector cleaning machine will be able to do it for you or you can try a couple of fuel tanks full of "combustion chamber cleaner".
The large bottle of Cheveron combustion chamber cleaner works very well. I have tried a number of other cleaners, but the Cheveron seems to work the best.
Good luck and let me know how it comes out.
Regards,

Jun 30, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

1999 gmc jimmy 151k miles code 0452, emmissions help


THIS IS A FUEL TANK PRESSURE SENSOR CODE. MOST LIKELY THE SENSOR ITSELF IS BAD BUT CHECK THE WIRING AND THE ECM.

Mar 25, 2009 | 1999 GMC Jimmy

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