fuel sending unit

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fuel sending unit

By Ajax1989
- Tue Oct 20, 2009 9:12 pm #151944 heyyy some of you may know that i have been complaing about crappy gas mileage, well i did a valve adjustment and top end engine clean, and replaced the o2 sensor, and i have access to top of the line equiment at school, so i have check every sensor, checked for vaccum leaks, checked for leaks in the evap system, i hooked it up to the smog machines, i even did a compression and cylinder leak down test and EVERYTHING was with specs.
so i have been going nuts, then i noticed that one nite i put 9$ in which was like 3 gallons, and it gave me half a tank, when the sedan tanks are 11.9 gallons..

so that said..lol
i talked to some of the teachers
and i was telling them that when i fill the tank compeletly full it takes about 170-180 miles to get to half a tank, then when i hit half a tank i can go throught that half a tank in 25 miles, i dont drive no diff then when the tank is full, so my teacher told me to ground the fuel sending unit, and it turns out that my fuel sending unit is bad..

as im typing this my gauge shows almost on the E but when i took out my fuel pump and looked inside the tank im what it looks like to be half a tank..

soooo now that is out my question to you guys are how do i change the fuel sending unit??
i dont see no bolts or screws..
do i have to drop the tank??

THANKS for reading this books..lol
and thanks in advance for the help
Aj
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By Classiccarsrule85
- Tue Oct 20, 2009 10:00 pm #151948 on the fuel pump there should be the sender unit.....take a pic of it and ill see im almost certain it should be in the intank fuel set-up assembly.....
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By Ajax1989
- Tue Oct 20, 2009 10:24 pm #151949 its not part of the fuel pump, when i take the metal cover off to access the pump, one the left is a plug and the sending unit is there, but i see no bolts or screws

i would take pics but i have no batteries for my camera
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By Ajax1989
- Wed Oct 21, 2009 8:06 am #152062 ya #21 the unit that has the float and send the reading to the gauge in the cluster

does any one know how to replace it?
and good to know its farily cheap :thumb:
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By Apexracing
- Wed Oct 21, 2009 2:44 pm #152082 i just google searched it, and every thing ive come up with is that its part of the fuel pump system and you buy it as one part.
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By Ajax1989
- Wed Oct 21, 2009 5:47 pm #152122 its not part of the fuel pump, the fuel sending unit is #21 in that link teal posted
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By Classiccarsrule85
- Mon Dec 07, 2009 4:30 am #160352 Any update on this i think im experienceing a well opposite problem i guess.....its reading full most of the time then ill shut it down and wait a night and then it will be down to half a tank sometimes i mean heck ive tried two clusters and it seems that they both read the same deal so im thinking its that part.......or something ....
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