Hi.I got an 99 isuzu rodeo I put a new gas pump but the fuel gauge dont work well,when I put gas just show me a little big of gas ...but when I full the tank,the fuel gauge go up to 1/4 of gas only...

why did you put a new fuel pump in,because the gas hand was not reading correct? if so,probably nothing wrong with the old fuel pump? maybe could have saved that $180.00 for the pump,and maybe put it towards the software upgrade to correct the fuel level.......>>>>>>>> < Isuzu Rodeo Problems>>>> Check Engine Light and Erratic Fuel Gauge Operation on Isuzu Rodeo The fuel level sensor may fail resulting in erratic fuel gauge operation and illumination of the Check Engine Light. Replacement of the fuel sender assembly is recommended to correct this concern. A powertrain control module (PCM) software update may be necessary for the updated fuel level sensor to read correctly. RepairPal Verified Average mileage: 138,637 (132–245,166) 5 model years affected: 1998, 1999, 2000, 2001, 2002 Follow this problem 44 people reported this problem