Fuel pump went out and at the same time a pop or crack was heard from inside the car. a/c will not work now and all fuses and relays have been replaced under the hood. 12 volts to relays and fuses but no juice to low pressure switch or compressor is there another relay under the dash?
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If you are sure the fusel pump is losing pressure or stops working check the EFI relay in the fuse box under the hood, check to make sure the EFI fuse is not loose or cracked, locate the circuit opening relay it controls the fuel pump and try a new relay, if nothing else replace the fuel pump, another possibility is the air flow meter, there are contacts inside that turn the fuel pump on and off as the meter door opens and closes.
Probably a relay, not a fuse. If there is a fuse it will be marked on the fuse box panel. Usually the relay is located under the hood either in a fuse/relay box or on a rack of several relay on the firewall.
if all you did was this...and and put a new battery in and still wont start...if you have went thru your plugs..wires..distributor..ignition coil...made sure your getting spark..if not..check your relays and fuses..preferebly one that deals with spark and timing for injectors..if everything is fine to that point...then try a crankshaft position sensor...it tells the pcm timing for fuel injectors and fire to the ignition coil...hopefully this helps.
It should be located in the fuse box inside the engine bay. The fuse box is probably covered by a black plastic cover that will pop off. The relay should be labeled on the inside of the black plastic cover, so you know which one to pull out.
It would appear that you probably need the fuel pump relay model # RY-479.
more than likely a clogged fuel filter[hopefully] if not that lets try this before you do anything.turn your key to the 'on' position can you hear a slight hum coming from the fuel pump in the gas tank under the rear of your car. it may take 2 people. one to turn the key on and one to listen at the rear of the car.try this several times to see if you hear the hum. if you hear the hum,the fuel pumps working. and then you know it's most likely a clogged fuel filter.if no hum heard,go under your hood to the main engine fuse box[black box] take the cover off of it. on the underside of lid,look for fuel pump relay,replace that relay with new one.if it's a fuse,replace the fuse. if this does'nt repair your problem,the fuel pump has went bad and in need of replacement.the pump is located inside the gas tank. the gas tank will have to come down and out in order to replace the bad fuel pump.try these solutions to see if they help,if you need further assistance,please repost your question to fixya.com and thank you for choosing fixya.com wish you the very best of luck!
are you looking for fuel pump relay or fuel pump cut off switch.the
fuel pump relay is under the hood close to the battery(having to be
generic here because depending on the engine size battery could be on
left or right) in a black box with printed nomeclature about what is
inside.(fuses,relays, etc.) fuel pump cut off switch is (if it
has one) usually mounted in trunk,kick panel on passenger side of car.
Easy way to find if if you have owners manual to car it will tell you