Question about 1990 Chevrolet K1500

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I have no power to my coil? replaced ignition mod....coil....fuel pump relay switch.....fuel pump......fuel filter.....2 30 amp fuse for power inside cab......I am clueless to what the problem may be

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Sounds like a computer issue check the ECU

Posted on Oct 06, 2010

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1 Answer

I have a 92 Honda accord wagon does not get power to coil. Distritutor Or fuel pump. Coil and distributor are both new. Any idea what it could be Thanks Rob


Check your maxi fuses in the under hood fuse/relay box. The black/yellow wire to the coil is directly from the ignition switch-it should be hot in run.
Fuse # 15 is an 80 amp fuse, and fuse #19 is a 50 amp fuse. Both of these supply the ignition switch with power.

May 12, 2014 | Cars & Trucks

1 Answer

Help... I have a 92 350 chevy truck that will not start. I have replace the ECM, coil, ignition mod., the fuel pump relay and the fuel pump. When i turn th Ignition switch on th fuel pump doesnt come on....


you said you tried applying direct voltage to the pump? proceed to remove the fuel tank and check the harness inside for continuity, both wires going to the pump itself. If wires prove to be ok , then proceed to replace pump .

Apr 17, 2014 | 1992 Chevrolet K1500

1 Answer

89 Comanche 4.0 inline 6cyl no power to pump and now no spark as well?


I'll try to help you, John.
For spark: If your spark plugs, spark plug wires, dist. cap, and rotor are good, check the coil. Take off the negative battery cable. Use an ohmmeter and check resistance between the coil primary positive terminal and the frame of the coil-ohmmeter should show infinite resistance, if not, replace coil. Put ohmmeter positive lead on coil primary positive terminal, and ohmmeter negative lead on coil primary negative terminal-resistance should be zero or nearly zero, if not, replace coil. Connect ohmmeter negative lead to the negative primary terminal and ohmmeter positive lead to the high voltage terminal of the coil. Ohmmeter should not show infinite resistance, if it does, replace coil.
If coil is good (or has been swapped), check that coil primary has power to it with key on. If it does, and no spark, the problem could be the ignition module or the pickup coil. The ignition module should be mounted with the ignition coil. The pickup coil is inside the distributor-this pickup coil is what tells the computer (ecu) the crankshaft position, so is critical for spark timing.

For the pump: the fuel pump relay is in the power distribution box under the hood. When the ignition switch's run wire energizes the relay's coil, power is sent to the pump. You could check for a signal on the pump wire at the tank, with the engine cranking Should be a steady signal then. If not, pull the relay out to check that the power feed for the pump is still there. The power to the relay comes from Fuse link G, a 20 amp rated green fuse link. It is hot at all times, so check for a power signal on one of the relay terminals with key off. One terminal should have power. If not, check fuse link G. If it does have power, put relay back in and have someone cycle the key-relay should click-may feel or hear it. If nothing, try a different relay. If relay was good, but no power to pump, pull relay and check terminals that relay plugs into: with key held in crank, two terminals at relay should have power-the power feed from fuse link G, and now the ignition switch signal to the relay coil side. If all checks out, probably a bad pump. If you checked for power at the tank with the engine cranking, and did have power, that is for sure a pump that needs replacing.
Good luck.

Sep 06, 2013 | Cars & Trucks

1 Answer

30amp auto shutdown fuse blows is it alternater


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.

Mar 06, 2013 | Cars & Trucks

1 Answer

I need a wiring diagram for 1995 2500 6.5 turbo diesel electric fuel pump circuit


The primary (coils) side of the fuel pump relay is powered by the CRANK fuse (10 Amp) located in the instrument panel fuse block. This fuse is hot ONLY when the ignition switch is in the CRANK position. The secondary (contact) side of the relay is powered by the ECM-B fuse (20 Amp) which is hot at all times. This fuse is located in the engine compartment fuse block. The electric fuel pump in the tank only operates during engine cranking.

Feb 19, 2012 | 1995 Chevrolet Silverado 2500

2 Answers

1994 honda civic will not start. New spark plugs and new fuel filter. The car will turn but not start. I have replaced clutch safety switch as well. lots of good gas on the tank. main relay and fuel...


REPLACE DISTRIBUTOR CAP AND ROTOR.AND PLUGS WIRES.IF GETTING NO SPARK TO PLUGS.CHECK SEE IF IGNITION COIL GETTING POWER.IF NOT CHECK IGNITION FUSE.IF POWER GOING TO COIL.FAULT EITHER COIL IS OPEN OR FAULT IN THE IGNITION MODULE IN THE DISTRIBUTOR.

Aug 23, 2011 | 1994 Honda Civic

2 Answers

I replace new fuel pump, relay switch and fuel filter, ignition comes on but no power to fuel pump


Check fuse for the fuel pump. Normally on the fuse panel inside the engine compartment on the fender.

Nov 30, 2009 | 2001 Chevrolet Silverado 1500

2 Answers

I have hyundai accent 2003. While driving the engine died. Checked fuses,ignition,fuel pump(don't know if the pressure is right),starter is starting ok.


#1. Scan for trouble codes. If any, record them and let us know which ones they are.
#2. Connect a fuel gauge to the fuel delivery line at the engine... try to start the engine while monitoring fuel pressure... if there is fuel pressure (approx 35 to 50 lbs), the problem is elsewhere.
If no fuel pressure, check fuel pump relay, fuse, wiring to fuel pump connector (power & ground - use 12volt test light). If power & ground are present, problem is the pump (fuel filter is attached to the fuel pump inside the tank).
#3. Check injectors for injector pulse, check ignition coils for spark to spark plugs.

Sep 06, 2009 | 2003 Hyundai Accent

2 Answers

! have a(correction): 1995 Grand am. It's not getting power to the fuel pump... The coil, relay, & ignition module are fine. I've just put my 3rd fuel pump & fuel filters on thinking that may


check your oil sending unit if bad then no power to the pump. this is a savor for your car if you loose oil pressure then the pump shuts off .They only did this a few years!

May 31, 2009 | 1992 Pontiac Grand Am

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