Have a 1992 buick regal ..the 20 amp fuse keep burning out on fuel pump relay ,,also replaced 12 volt to the pump . the 20amp fuse still burns out, this happens when replacing battery termanals ..so i dropped the fuel tank to replace fuel pump ,,and i have a new fuel pump assembled now im second guessing myself... i jst put a new fuse in without the fuel pump,,connected the terminals and it burned out again
Hi marty sanchez, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Have you traced the wire from the pump to the fuse box? It may have burned its insulation on a hot pipe or manifold.Hi marty sanchez, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Have you traced the wire from the pump to the fuse box? It may have burned its insulation on a hot pipe or manifold.
You can't post conmments that contain an email address.
you have a voltage drop problem probably a coroded wire if you can open wire harness and do voltage checks down the wire until you find the bad spot and repair or you can run a bypass wire
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
The ASD relay supplies battery voltage (12+ volts) to the fuel injectors
and ignition coil(s). With certain emissions packages it also supplies
12-volts to the oxygen sensor heating elements. The Fuel Pump Relay is a
separate relay controlled by the ASD relay input to the PCM. Fuse #12
(10amp) provides 12 volts to the coil side of both the relays and the
ignition switch. Fuse #6 (30 amps) supplies 12 volts to the output side
of the relay. Fuse #16 (15 amp) from the relay output to the Oxygen
Sensors and Fuse #26 (15 amp) relay output to the PCM. Fuse #24 (20 amp)
is Fuel pump relay output to fuel pump. Fuse #19 (10 amp) supplies 12
volts direct to the PCM. look for burned or melted wires in the offending circuit. sounds like you wiggled a wire while installing new relay.
hawkeye 30: yeah, probably the pump. A sensor malfunction would still let it run in "open loop" mode.
Before you tackle the pump, though, I'd recommend getting a fuel pressure check at the engine. Also check if you have 12 volts going to the pump at the elec. connector at the tank. good luck.
Underhood fuse block swap out relay #7 thats the ECM relay. Ground Circuits Using a DVOM, touch negative voltmeter lead to a good ground. Touch positive voltmeter lead to each ground terminal. With vehicle running, voltmeter should indicate less than one volt. If reading is greater than one volt, check for open, corrosion and loose connection on ground lead. See ECM GROUND LOCATION table for ECM ground location. Page 1 of 1 SYSTEM/COMPONENT TESTS - 2.6L EFI -1994 Isuzu Rodeo
When you said checked the fuel filter, did you mean changed the filter?? And does the Battery hold 12 volts?? Check the battery to make sure it has 12 volts. If you have a second car, take the alternator off and bring it to a auto parts store like Auto Zone and they can test it free of charge and battery too. Change the fuel filter, if both are good then check all the fuses and relay, Pay attention to the fuel pump fuse and ECM fuse.
If everything has is good then it's going to be a bad fuel pump, which is located in the gas tank. That requires to dropping the tank to get to the fuel pump. Good luck and hope this helps.
with the key on there should be power (12 volts) to 2 terminals, you need to cycle the key to sense the power, it only stays on 5 seconds, have someone turn the key on and off while u check..
Hi marty sanchez, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Have you traced the wire from the pump to the fuse box? It may have burned its insulation on a hot pipe or manifold.
×