My fuel pump went out. i replaced it with a new one. itworked but when the gas gauge worked it run real good, but if the gas gauge went above full and wouldnt work the engine would miss and not idle good. then the motor just quit and wouldnt start. now i cant get any current to the fuel pump. i have replaced the relays the computer,i dont know what else to check. any suggestions. i also had it put on a analyser and it showed no codes. thank you,d.zacek
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Re: fuel pump problem 1991 s-10 2.8
Sounds like the Vehicle is POSESTED LoL ,
I would Hardwire a Key on wire around the origanal wires. Fuel Pump IS NOT going to set a Trouble Code at all ever, as it is an electrical component like headlights, as for the missfiring & guage reading above full I see nothing in commen with the 2 as long as the Supply and return hoses are
not swaped witch they cant be because it wouldnt run (thinking on keyboard) LoL-- Also check Fuel presure regulator. Hope this Helps you.
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Could be hooked up wrong or not at all. If its getting gas at the engine, might be a clogged line. did you have the fuel filter replaced to.. ? check it. But first CHECK IT HAS GAS IN IT !!!!! Not by the gauge. Put new gas in it...... Good Luck
This is one of two things, it could be the fuel level sender or a bad fuel gauge, a bad gauge would mean replacing the cluster, I would run gas low and drop the tank, remove the fuel assm, the sender is the part that holds the pump, i will enclose a picture to show you.This being a 1996 Bonneville i would bet its the sender in the tank.i would change the fuel pump while you have the tank down. Also check wiring and connector as some of these pumps will tell you to replace the wiring and connector, this is supplied with the new pump.If you are replacing the pump also then replace the fuel filter.\The only problem is make sure you spray the line to the sender on the top side of tank and let soak. this is if there are rusted. in my area they are rusted on these older cars. good day. have enclosed the picture of the fuel pump and the sending unit . hope this is helpful.
I would connect a 12v test light to the wire that goes to the fuel gauge at the connector near the fuel tank. With the ignition on the fuel gauge should go to full. If it does you'll have to take the sender back out and check it. If it doesn't you have a problem with the gauge or wiring. I suspect you'll find you have a sender problem.
When you replaced the fuel pump, did you have you switch to the new harness? Check your wiring.
Could it simply be a relay?
My dash gauges went nuts but the car runs.
Do you hear the fuel pump running?
Did you replace the fuel filter? Should be on the frame under the driver.
Bosch fuel pumps are the way to go. The ret seem to **** out after 60,000.
Was the wire harness replaced from the fuel sending unit to the frame, it's a good practice to replace the wire harness when the sending unit is replaced. The wires are know to break and cause sending unit issues from weak fuel pressure to faulty gas gauges.
The other possibility would be a faulty connection to the stepper motor in the gauge it self or just a faulty stepper motor that would need to be replaced. You can do a search on Ebay for stepper motors for your fuel gauge which runs for around $15.00 which is much better then $400.00 for a new cluster if it is and bad fuel gauge stepper motor.
Thank you for using fixya and good luck.