anyone ever tackle a fuel tank press sensor on 99 Tahoe


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anyone ever tackle a fuel tank press sensor on 99 Tahoe?

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dmac0923
Enthusiast

Mar 18, 2009, 4:15 PM

Post #1 of 3 (3054 views)

anyone ever tackle a fuel tank press sensor on 99 Tahoe?	Sign In

A buddy of mine had his Check engine light on and with my scanner i got a P0452 code. If i researched that right, i believe the cause to be a faulty Fuel Tank Pressure Sensor.

Has anyone tackled trying to change one of these and have any tips???
__________________________________________________
2015 Jeep Grand Cherokee
2002 Ford Ranger
2004 Toyota Corolla
1969 Ford Mustang Mach 1

Todd Norton
User / Moderator

Mar 19, 2009, 5:25 PM

Post #2 of 3 (3044 views)

Re: anyone ever tackle a fuel tank press sensor on 99 Tahoe?	Sign In

ya sometimes you can change them without even dropping the fuel tank , you need to locate them with a light and mirror ,they are found on top of the fuel tank mounted in the sending unit,get comfortable, then disconnect the electrical connection , I use a small pocket screw driver or a pick and gently pry the two tabs on the side while wiggling the sensor up , once out, clean the area with brake cleans , lube the silcone rubber seal on the new sensor, reinstall by positioning carefully between the retaining clips and push down evenly using your fingers , reconnect and your good to go ....the only thing i would say otherwise is make sure you actually need this sensor as it is quite often misdiagnosed . one quick check you can perform is to make sure gas cap is tight and run vehicle for about 15 minutes , using a scan tool monitor the pressure sensor . you should have a distinctly positive voltage /psi reading (i can provide the spec if you would like) then while monitoring the psi remove the gas cap , it should then fall to zero , quite often it is just a faulty gas cap or a leak in the evap system is very common ...hope this gives you some food for thought ....good luck.....Todd from the hammer............

dmac0923
Enthusiast

Mar 20, 2009, 9:23 AM

Post #3 of 3 (3037 views)

Re: anyone ever tackle a fuel tank press sensor on 99 Tahoe?	Sign In

my scanner has the Live data function on it... just gotta figure out what reading/abbreviation on the scanner is for the pressure sensor
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2015 Jeep Grand Cherokee
2002 Ford Ranger
2004 Toyota Corolla
1969 Ford Mustang Mach 1

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