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I have no power to my coil, it's a 98 blazer 4.3vortec V6. All fuses and relays are good.

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  • Cars & Trucks Master
  • 4,514 Answers

May have a bad coil or connection....or cranksensor......seek a repair manual

Posted on Apr 06, 2015

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  • Cars & Trucks Master
  • 11,056 Answers

The ECM 1 (15amp) fuse in the underhood electrical center supply's power to the coil !

Posted on Apr 06, 2015

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  • Cars & Trucks Master
  • 5,309 Answers

Bad ignition switch?

Posted on Apr 06, 2015

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

Molson02536
  • 3854 Answers

SOURCE: fuel pump problems 2003 s10 chev 4.3 v6

Your ECU is what acctivates your fuel pump realy. Put the key on the run possition and pull the ecu fuse for a few seconds and reinstall it ans it should accivate your realy for 5 seconds, Good luck.

Posted on Apr 06, 2009

  • 334 Answers

SOURCE: i have a 94 grand cherokee, v-8. new pcm, new

check the wires going to ing.sound like you have a broken wire or one that is not hooked

Posted on Apr 18, 2009

  • 245 Answers

SOURCE: engine would not start after shut down check fuse,relay seems to be good change fuel pump and getting power to pump not building up any pressure from fuel bleeder,coil has good spark(blue) when i prim

you either have a clogged filter or a bad fuel pump.

Posted on May 24, 2009

jagjeffery
  • 316 Answers

SOURCE: honda civic(98) no start

there are two blue wires at the module one is out put to the tach the other is coming in from the coil if this wire does not have 12v coming in with the key on check for 12v on both sides of the coil with the key on you should have 12v on both side if you dont swap outt the coil ( but normally in this case when you dont have spark your crank sensor is bad )

Posted on May 29, 2009

  • 16 Answers

SOURCE: 98 chevy blazer turn signal relay buzzes except when signal on

bad relay or a bad wire

Posted on Jan 06, 2010

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1 Answer

I have 96 isuzu trooper3.2l v6 stick shift all power is good but when i stick key in switch and turn it no sound at all what could that be


electrical power you meant is seems good.
engine power zero.
starter dead.
this is no crank, ill post again,. for this, done so many times.

i use this thing called a voltmeter and avoid this jiggery pokery below...... time is money.

1: fuses good.battery terms clean? (all fuses, if you lack the FSM to see which ones are IN PLAY.)
2: battery charged to 12.6vdc reseted?
3: jumper cable cranking work now>? off a running donor car?
yes, the battery was dead, or weak, or discharged, test battery, test cars charging system and last make sure no drain on battery parked keys out of car..
4: NO, jump fails.
check or bypass clutch switch?
this cranks ok, (bad clutch switch at its pedal.)
if still dead it can be bad key switch or bad starter relay.
lets see if it has the relay. ,alldata.com says yes.

so does the starter relay close, cranking?
if not fix cause that first.
it needs fuses working
it needs power to the relay contactor input
power to the coil
and the coil enabling factor the clutch depressed and its switch must be closed.
and if the antithieft box, (factory option) is unhappy
the start relay coil will be dead.
start at the relay ,
does the (turned on) dash heater fan cut off, cranked
yes, then relay is closing
no, its not. find reason.
easy with a volt meter the 4 pins on relay.
pins 3,4,5,6
12v, 12v, 0v and 12v respectively.
if the pin 5 never goes to 0v, the immoblizer is unhappy.
sorry so small, Fixya shinks it to useless....

25691838-51hqzbz3dizfbnqgamxcgrll-4-0.jpg

May 12, 2015 | Isuzu Cars & Trucks

1 Answer

98 jeep put new crank sensor ' coil pickup' and coil ' i have no power to the fuse block on finder no fire to plugs and dont here fuel pump


No power to fuse block? This may be the problem. Check all your maxi fuses in the power distribution block. I think all the maxi fuses are hot at all times-check if they are getting power, and fuses are good.

Also in the power distribution center is fuse F15- a 30amp fuse for fuel pump relay, and fuse F6- a 15amp fuse, also for the fuel pump wiring. Check that both are good, and have power-F15 is hot at all times. F6 is hot in run or start.
This is the 4.0L inline 6, right? That is the engine diagram I have. The coil signal is from the ECU. Does the check engine light come on with key on, so you know the ECU is powered?

Dec 09, 2013 | 1998 Jeep Cherokee

1 Answer

Fuel pump is not working


Check the fuse and the fuel pump relay. If fuse is good, hold a finger on the relay while someone turns the key to on. If no "click", the circuit must be investigated for a problem. Pull the relay out and probe the terminals the relay plugs into. With key on, one terminal should have a constant voltage-that is the battery feed for the pump. When cranking the engine, another terminal should have voltage-that is the computer signal to coil relay, turning the coil on, and letting power pass to the pump.


Alternatively, you could check for power at the fuel pump connector while the engine is being cranked. If you have a volt reading then (or a test light that lights up), the pump must be bad and needs taken out to see. If no power there when cranking engine, go back to the relay and check for power as outlined.

Aug 28, 2013 | 1993 Chevrolet S-10 Blazer

1 Answer

1998 Blazer LT 4.3 L V6 No power to fuel pump relay on the relay trigger circuit at any time. Power is there for the fuel pump power circuit if the power was there to trigger the relay New fuel pump...


is the fuse good is the oil full the fuel pump wires run under the drivers carpet is the carpet worn ive seen more than once a hole in the carpet and the wires cut from the heal of peoples shoes

Oct 14, 2010 | 1998 Chevrolet Blazer

2 Answers

99 chevy blazer cranks but wont start


CHECK BATTERY VOLTAGE FIRST IT SHOULD BE 12.5 VOLTS.IF NOT REPLACE BATTERY HAVE ALTERNATOR CHECKED.IF BATTERY GOOD.HAVE VECHICLE SCAN FOR PCM PROBLEMS - CRANKSHAFT SENSOR PROBLEMS OR CAMSHAFT SENSOR PROBLEMS.IF ALL IS GOOD GET A SPARK TESTER AND FUEL PUMP PRESSURE GAUGE TESTER.IF GETTING NO SPARK PROBLEM COULD BE LOOSE BAT.POWER SUPPLY WIRES AT IGNITION COIL MODULE OR IGNITION MODULE FAULTY.IF FUEL PUMP NOT RUNNING CHECK FUSE ABD RELAY IF BOTH IS GOOD FUEL PUMP FAULTY.

Apr 02, 2010 | 1999 Chevrolet Blazer

1 Answer

98 chevy s10 blazer turn signal


Unplug the turn signal relay from the fuse box and start you engine. Does it still make that noise?
If yes... Put the relay back in, that is not the problem.
If No...Then the relay could be bad, replace it!

PLEASE RATE THIS SOLUTION! Thank You Very Much!

Nov 25, 2008 | Chevrolet C1500 Cars & Trucks

2 Answers

No spark when trying to start the engine on 98 chevy blazer


Check for dead battery. Test wipers, radio, headlights and heater fan. If all work normally, battery is probably charged and you may have bad starter or alternator ....

Good luck...

Nov 11, 2008 | 1998 Chevrolet Blazer

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