I have a 1999 Isuzu Rodeo with the v6 in it. The gas gauge does not work right. I have done some reasearch and everyone says that it is the fuel sending unit. I have called around and they said that you have to buy the whole pump assembly which is like 181.00 and people have told me that you can buy the fuel sending unit for $50-$80. Can any one tell me where to get a fuel sending unit. Thanks
Hey there. Well, I had the same problem on a 1999 Isuzu Rodeo. I thought I'd take the easy out and just replace a fuel sending unit. Don't waste your time. Swap out the entire fuel pump. Go to your favorite autoparts store (Autozone) and ask for them to price the fuel pump. There will be options, get the part number for the cheap one ($80 Airtex, I got mine from a place in Miami). Look up the part number on ebay and buy it for about $80 complete. Spend the money and get a new fuel filter from parts store as well as a Haynes repair manual for the truck. Follow the instructions for fuel pump removal in section 4. You should have a degree of confidence on auto repair or take is straight to a reputable shop. You do need to do some very important things (relieve fuel pressure, drop the fuel tank with the truck on high ramps or jack stands, etc.). This is NOT for the novice. Otherwise, expect the task to take 4 to 6 hours if you don't have a lift. A shop should charge 1 1/2 hours labor and cost of the pump - you need to ask yourself what your time is worth.
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Had similar problem with '03 Bonneville and '04 Malibu. Research says it happens a lot. My fix was to remove the fuel pump to get to the fuel level resistor, clean up the resistor and contacts,with mildly abrasive material, and also slightly bend the contacts to allow for more pressure against the resistor. Put it all together and no more jumpy fuel gauge. It used to go from full to empty and back. The mileage computer would go nuts. Not any more.
First thing is check fuel gauge fuse,then trace to connection to see if wire has came partially undone , let's hope it is not float in tank, then it's a more complex fix. Let me know on that first. Thanks mike from fixya
There could be a poor connection or an open circuit between the power control module and the fuel gauge sender, or the fuel gauge sender itself is bad. The sender is mounted to the gas tank and usually can be replaced without dropping the tank.
Try Replacing your gas sending unit or gas pressure sensor unit, both fairly east to replace with minimal expenses. If this does not fix the problem then change the fuel pump. But start with the gas sending unit.
Hello i had the same issue my gas gauge did not work and i had a bad fuel pump ,i ended up replacing my pump and realized the pump has 2 units attached to it one is the sending unit for the gas and the other the gauge level ,i encountered an issue when i swapped out the old pump for my new pump the gauge did not work any more after replacing,so i investigated after ruling out any wiring defect ,i made sure the pump was properly connected in its self the pump has a connector between the sending unit and the gauge level, and after that i realized the bcm, ECM, or vcm how ever its called (the computer) for my vehicle needed to be re-flashed completely for it to see the new pump... i never would have thought the main computer could not end up just detecting it automatically, all 98 and 99 must under go a re-flashing when any fuel pump is disconnected and replaced... hope that helped...
What does your manual say that it is? Always check in your manual and you will have plenty of information to help solve your questions. However, I want to venture a guess about your gas gauge. You may have a computer mis-read and the new tank install is not interfacing with your computer.