Question about 1992 Chevrolet S-10

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No 12 volt coming out of fuel pump relay. has fire going in. relay clicks like it is suppose to but nothing out to fuel pump.

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Check your voltage at the fuel pump to see if you get power there. A relay should have a ground and posistive to turn it on, as well as a positive waiting, and when it's turned on, the positive waiting goes through the relay to the fuel pump.
Be aware that when you first cycle the key on, the fuel pump only runs for a second. Youy need to turn off the key and wait for half a minute before you can do it again.

Posted on Sep 11, 2009

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Posted on Jan 02, 2017

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I have a 2002 Honda 954RR. The fuel pump is not kicking on when I turn the key. How do I check the fuel pump relay to see if its working


the fuel pump relay has 4 leads. one is positive to battery, one is negative, ground, one is input voltage(on/off), and one is load (to the fuel pump +). Locate a 12 volt dc power source and connect the negative to the relay ground, and the positive to the relay input voltage lead. When 12 volts is applied to the input voltage, you should hear a click of the relay opening- additionally, if you have a multi-tester, you can also check for continuity (resistance, ohmage) by connecting the multi-tester to the 2 other leads. when the input voltage lead receives the 12 volts, you should hear a click AND the multitester should detect continuity in the circuit, and lose continuity when the 12 volt is removed from the input voltage lead.

Jan 11, 2017 | Honda Cars & Trucks

1 Answer

2000 Pontiac Grand am Replaced fuel pump today. Nothing no fuel pressure when I crank it. I check volts at the fuel pump plug in I get 4.9 volts. Shouldn't it be 12 volts. Can someone answer this.


yes. It should be 12 volts. Did you use the replacement harness you should have gotten with the pump? GM has an issue with the harness going bad at the pump that's why new pumps come with a new harness. Also check the relay.

Oct 13, 2016 | 2000 Pontiac Grand Am SE

1 Answer

No fuel. pulled off fuel line to carb and cranked engine no fuel coming out. Relay under dash working. No sound at fuel tank when key is turned on. Are there any other fuses or relay for fuel system?


Check for power output at the relay, there should be a pink wire with a black stripe that connects to the fuel pump relay, when the key is turned on it should have 12 volts for a few seconds, then drop to 0 volts. This is the prime function that builds fuel pressure before you start the engine. Even though it clicks it doesn't mean it works - the contacts could be bad. This wire continues straight back to the pump, if it has power there may be a damaged wire between the relay and the pump or a bad pump - the pump is fairly common on these vehicles.

These pumps last longer if you don't run less than 1/4 tank of fuel - keeps them cooler.

Sep 29, 2015 | 1994 Geo Tracker

2 Answers

02 intrepid anti-theft is going off on the dash


Check the owners manual for how to disarm the security system. They are designed to shut off the starter and fuel pump when the security system has been triggered to prevent theft.

Sep 24, 2014 | 2002 Dodge Intrepid

1 Answer

1986 hilux fuel pump not working


First, I'm guessing your truck is fuel injected right? If so, the first thing to do would be to check the power going to the pump. The pump is in the tank (if fuel injected) if carb engine then you have a manual pump on the engine head. Some Toyota's came both ways all the way up to '89-90 models. But, locate the wires going to the pump near the tank, the 2 biggest wires will be the power wire and ground wire to pump, with volt meter have someone spin engine over while you check both wires to see if you are getting 12 volts to 1 of them.
If you are, then you have a bad pump, if you don't have 12 volts to either wire, then you will need to identify the fuel pump relay. The relay is located in a few different locations on the older model Toyota's, I'm sorry but without seeing it myself I can't pinpoint exactly where the relay is. Have you checked the relay center under the hood? Hope this helps.

Dec 10, 2013 | Toyota Cars & Trucks

1 Answer

2000 chevy silverado 1500 4.8 4wd will not start


Your pump is controlled by the pcm using a 12 volt signal to the relay. Pull out the relay and probe the relay socket with a voltmeter. There should be 2 terminals with 12 volts when the key is on. With the key off, there should be one 12 volt terminal coming from the ecm b fuse. See top left of diagram below.
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Jul 15, 2017 | 2000 Chevrolet Silverado

1 Answer

No fuel coming to the fuel rail. is it a relay, or fuel pump problem


  1. Check the power going to the fuel pump. If it gets around 12 volts when the key is turned to the On position, replace the fuel pump.
  2. If the fuel pump is not getting around 12 volts, check and replace the fuse for the fuel pump.
  3. If the fuse is fine, replace the relay for the fuel pump.

Feb 18, 2011 | 1994 Mitsubishi Expo

1 Answer

Fuel pump not coming on,installed new one, white plug that has a yellow wire has 5 volts and ground is ok the 2 wires in the center shows 0


The plug you are referring to is probably the fuel tank pressure sender not the fuel pump. It would be plugged into a black sensor about 2 inches long pushed into a rubber grommet on the fuel bung. The fuel pump connector would have more that 2 wires going to it. most likely a heavy purple wire would be the power to the pump. It has to have 12 volts to it to work. The sender may have 3 wires, 5 volts, ground, and sense. the pump connector would have 12 volts, ground and 5 volts for the fuel gauge sender down in the tank.
If the 12 volts is not there, check the fuel pump relay. it is usually up on the drivers side firewall.
With the key in the on position without starting the engine, you should have 12 volts to the pump for 3 seconds then it will click off. Without cranking the engine you should be able to locate the relay by the clicking sound.
There is also the obvious, like checking the fuel pump fuse.

Jan 11, 2011 | 2003 Chevrolet Avalanche

3 Answers

No power to fuel pump car was running fine just quit repalced fuel pump no power to pump, car will start when spraying starting fluid in to intake, is there a fuse ? also replaced ECM, fuel filter,...


Check for 12 volts power at the fuel pump harness. If no power is going to the pump, check the fuel pump relay. Also, check the fuel pump inertia switch. Ford usually has it on either inside left or right rear trunk fenders.

Apr 09, 2010 | 1987 Ford Taurus

2 Answers

1997 dodge ram won't start. My fuel pump does not run and coil won't spark. Iv'e checked fuses and relays and they look fine. Could a bad fuel pump cause the asd to kill power to the coil?


First check any ignition/fuel related fuses. Check to make sure you have 12 volts coming into the pump and coil. If nothing to the fuel pump replace the fuel pump relay - if you do have power to the fuel pump then replace the pump. If nothing is coming to the coil it is either an ignition relay or a wiring issue. If you have 12 volts to the coil but no spark then replace the coil.
Also the fuel pump/relay would not kill the coil.

Jan 21, 2010 | 1997 Dodge Ram 1500 Club Cab

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