My plan to clean the fuel injectors on my 2008 Silverado LS 4.8L V8 came to an abrupt halt when I was unable to disable the fuel pump relay because it is missing from the spot where it should be located according to the schematic in the owner's manual. Would removing the "fuel system control module" (fuse #21) instead of the fuel pump relay work?
View 7 RepliesMy 95 chevy 1500 pickup is having fuel pump issues. Somewhere between the relay and the sending unit. Pulled the tank, and put power directly to both the pump and the sending unit. They both run. Put in new relay, still not turning on the pump. Do not know if this is related, but the switch to turn on the interior light when you open the door does not work on the drivers side door. If I pull on the switch the light will come on.
View 3 RepliesI am looking for the location of the fuel pump relay on a 1997 Chevy S10. There is a bank of relays on the firewall on the passenger side, but I do not have any info on which relay is for the fuel pump.
I briefly looked at this vehicle where they had it towed to after it had stalled on the road and they couldn't get it to start.I had no tools at the time, but not hearing the hum of the pump, and no fuel at the test port on the rail, all pointed to a fuel problem. The owners boyfriend took over from there and replaced the pump this past Saturday and still no pump.
I suggested that he find the right relay and test it, but he skipped that part. Which of those realy are for the pump??????
Several years ago I had to replace the fuel pump - truck had about 100,000 miles. Within the last 4 - 5 months I have replaced the fuel pump twice and just today (about two months since the last replacement), the fuel pump has failed again. That has been the pattern now for the last several months. I have had the work done by one of the reputable car repair shops in town - they have also done work on my 2004 Impala with no issues with the repair. There must be something else going on besides just the fuel pump going bad. What would cause so many fuel pump failures.
View 16 Repliesok, i just became the proud owner of a 71 dodge dart.. fuel pump was not working, and am converting to an electric (airtex e8016s) and am told i need a relay. airtex doesn't seem to have one, is there another i can use? fairly new at this sort of thing, but have fixed a 72 honda motorbike, so not afraid of engines or whatnot.
View 19 RepliesI have a 1999 Chevy Suburban. The blower fan for the heater/AC was only working on high so I replaced the resistor and relay at the same time. Still no change so I replaced the switch and 30 amp fuse. The first three settings worked but not the high. I checked continuity of the wires between the switch and relay and they were fine. I then thought it might be the blower fan which I replaced but still not working on high.
View 4 RepliesMy F250 heavy duty isnt getting voltage to the fuel pump relay.....
View 2 RepliesWhy the frame mounted fuel pump might run after the key is turned off? Then when you turn the key on it may or not run. If it does run it keeps running. shouldn't this shut off after pressurizing the line? is their a pressure switch in the pump that's failing? This has the 3 pump system...
View 4 RepliesStuck 398 miles from home. Car kept losing power, running out of fuel (even though I had a quarter tank). Stopped and filled it, but could only barely get to next exit. Step on gas- no go. Let off gas, car catch back up and run. Wife noticed definite new sound in back. Took her many miles and comments before it finally sunk in and I remembered the same groaning noise from a fuel pump going out on a cabrio. So, fuel pump bad.
Am preparing to go out and jump terminals, as per bentley manual. That should tell if it is transfer pump or fuel pump. My main concern now is are the pumps under the rear seat or in the trunk?
By the way, I made it to a motel (lucky enough one that accepts pets!)
It started out w/ my wife swapping from the front fuel tank to the rear tank due to the fuel qty getting real low. Then the next day when I drove it I had bad fuel qty and amp meter indication, I found a blown fuse on my fuel qty/amp meter gauges. I replaced the fuse and got my indications back. Now I hear my front tank fuel pump is running constantly when selected to its position. Its now full of gas and still runs constantly. The rear tank/pump operates normal. I am wondering if I ran that pump empty and lost its prime? What is the best way to burp it?
View 9 RepliesWhen pumping fuel in 07 silverado classic 1500 4.8L the gas pump at the station continues to cut off. Took me 20 minutes to pump. I now have a check engine light on and the code says it code be the EVAP vent solenoid or the purge solenoid. Truck seems to be running fine other than stronger fuel odor at the exhaust. which solenoid need replaced....
View 6 RepliesCan't fill the tank in my 1981 Chevy 1500 Truck; pump cuts off after 7 gallons. I took the vent tube and the fill hose off and there are no blockages.
View 8 RepliesMy 95 aurora 4.0 lost all power to the fuel pump and at relay. what could be my problem. Is there a fuel shut off ?
View 2 RepliesWithout key even in ignition, fuel pump relay clicks constantly every 8 seconds with the gauge lights illuminating during this 8 seconds. The only lights that function are the gauge lights. Upon turning on the headlight switch only the gauge lights illumin8. Absolutely no headlights, dome light or brake lights. No fuel pump sense/pulse. No radio, key on or in accessories.
Multi-function switch was not the issue. How would I troubleshoot this one?
My 1993 Bonneville SE; fuel pump is not working. I don't know if it's the relay or not. How can I check and where is the relay. I have relays in horizontal line in center of my firewall. I am disabled and don't have any other transport.
View 1 Repliesi have had this problem before where the relay for the electric fuel pump would quit intermittently, and had it fixed. but, i suspect this is acting up again. so, i was gonna do it myself. there are 2 relays strapped to the radiator overflow can. is one of them the relay i am seeking?
What started all this, motor was running really rough at idle, but ran ok once moving. So, I replaced the spark plugs, and cleaned the contact areas in/on the cap and bug. motor started right up, and actually sounded good... for about 10 or so seconds, then it died, like the gas was shut off. I do have spark.
How to check/test the fuel pump relay and could pass this info on to me would be good. i do have test light, and DMM.
My jimmy died on me yesterday on my way home from work...i thought the fuel pump went because i couldn't hear it when trying to restart... I had about a quarter tank of regular in there,,,put in 2 gallons of super and it started, but died again about a quarter mile down the road...got it home with a push...after searching for and checking any fuses i could find...swapped relays on firewall and all seemed well....i heard the pump and it fired right up...went walked, just in case) and got another relay, and now i don't hear the pump again,the battery is a bit low now,,,so maybe a jump would give me enough juice? I'm going to jumper the wires/relay...and be sure the pump is working... I'm sure it is.. 94 jimmy 4.3 vortec 140k I gotta pick up my wife from work later and don't want to get stuck again...
View 9 RepliesA cousin has an old 1994 Ranger. The fuel pump relay, located in the engine compartment fuse box. went bad, so he got a new relay.
Now, it does not plug in securely, so sometimes he has to open the hood and fuse box and wiggle it to make contact.
Ideally, one would probably replace the fuse box, though that would apparently involve a lot of wiring, right?
How to "cob" this up so the contacts will make better? Perhaps something to put in the slots to increase pressure on the blades?
Maybe gently twist the blades so they go in at an angle? Maybe touch the blades with a solder iron and put on a small blob of solder to make the blade bigger? (Though it seems to me that solder is not a good contact material?
Maybe solder to the blades, a very small piece of brass or similar material? Put a piece of aluminum foil over the blades?
1994 Buick Century 3.1
Fuel pump relay is not powering the fuel pump. I was able at one point to jump the orange wire to the gray wire but it will not even do that now. I know the fuel pump works because I can jump from the battery to the gray wire and it will turn on.
I used a multimeter and tested the volts from the orange wire on the relay to the neg post on the battery and it is only reading about 1.3 volts. Is this normal?
Checked the fuel pump 15a fuse and it is ok. I am getting spark. Could it be the crank sensor? How can I test that? (It is above the start I believe). Could it be the ignition control module? How to test? Location? What else can I test with the multimeter and post back with the results to further diagnose?
My '94 4.0L XLT has hesitated to start a couple times lately. Then, after sitting for a week while we were on vacation, the truck would not start at all today.
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I read about the fuel pump relay, so since I am not made of money, I decided to change that first ($16 vs. $100). After installing the new relay, the truck started! I put the old relay in the box and tossed it into the glove box.
After lunch, and some thought, i decided I wanted to put the old relay back in and see what happened. Guess what! It started with the old relay as well! I also noticed that the humming/buzzing sound the fuel pump makes when the switch is turned on was different with the new relay vs the old one. I put the new relay back in, but now I am unsure where my real problem lies. Intermittent relay, or fuel pump on its way out??
Where the fuel pump relay is in Corolla 2010 le?
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