I Got a 99 ranger Flex Fuel Engine. I Was Getting current to fuel pump replaced & NO Spark. i replaced the ecm & Fuel Problem Was Solved but now no spark or current from ignition Coil Pack?? any one now wat problem might be?
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Check compression in number three. You could have bought a bad engine. And yes. You need to change every sensor. If they don't match with the plugs. replace the engine. There is a reason for different engine codes. You should have stuck with them.
1987 rangers use a device called a TFI module to control ign. timing , this merely triggers a std. coil to fire the center port of distributor cap , this device only controls the coil to fire but does send a pulse for timing back to ecu this sets the base pulse for fuel injection , but its also affected by manifold Air flow and exhaust O2 amounts (closed loop) , but engine should run in base mode (open loop) fuel timing (but not well) , fuel pump relay is enabled to run via ECU output , Now your year ranger had a tech bulletin out on fuel pumps , seems they had a problem getting them to work after a fuel filter was replaced , something about a false backpressure , no if you have no/low fuel pressure then id look at fuel pump power 1st then fuel pump itself assuming you've already tried a new filter of course
Is it Fuel injection and electronic ignition, or still distributor and carb?
if its FI, check the fuel relay, located in the fuse box usually, not sure where for your truck specifically, but if you locate it, tap on it a few times while someone else cranks the truck, also, the fuel pump could be faulty, can you hear the winding noise when you turn on the ignition, if not, then pump is gone.
The spark issue is a tricky one since you said you have replaced the coil...
spark wires ok? coil installed properly? battery charged and leads tight? alternator working? if alternator is failing to charge the battery, then it gets to a point where you dont have enough power to make the coil spark, the engine will crank, but not enough current (amps) to fully charge coils to deliver healthy spark.
#1 NEED TO VERIFY SPARK AT SPARK PLUGS # 2 CK FUEL PRESSURE AT SCHRADER VALVE ON FUEL RAIL ,,PRESSURE DEPENDS ON TYPE ENGINE ....IF NO SPARK AT SPARK PLUGS CHECK SPARK FROM COIL WIRE , IF NO SPARK AT COIL ,CHECK VOLTAGE TO IGNITION COIL SHOULD BE 12 VOLTS, IF NO VOLTAGE AT COIL ( KEY ON ) CHECK FUSES THEN IGHITION SWITCH. IF NO FUEL PRESSURE AND FUEL PUMP RUNS REPLACE PUMP .. CK VOLTAGE TO FUEL PUMP WHILE CRANKING . CK USING PUMP GROUND WIRE AT THE PUMP CONNECTOR THIS WILL PROVE GROUND ALSO. USE TEST LIGHT TO VERIFY
It can happen some times their are few possibility for such problem to happen a few day ago we had see such problem in Hyundai Santro Xing this sort of problem can happen due to 1.Failure or less pressure flow from the Fuel Pump motor which is located in fuel tank. 2.It can happen due to inflated fluctuated current supply from Ig Coil in simple term Ignition Coil 3.It can happen due to faulty spark Plug where it time to need to change those faulty Spark Plug while Changing those spark plug do go for spark plug such a NGK or Denso this both company Spark Plug are or Good Quality they give your car the better performance, Mileage fuel economy efficiency . make sure that if you are replacing Ignition Coil then better replace 3 things at a time Ignition Coil, Spark Plug, & Plug wire set. & do remember to replace Spark Plug at every interval of 10000.Km. in this case you better consult to an authorized Hyundai or KIA motors service workshop where your problem will be sort out hazard free.
first, check all the fuses
did you check to see if there's spark at spark plugs?
did you check the fuel pressure? you need to do that to isolate fuel and ignition system.
if there is no fuel then check for fuel pump operation
if there is no spark then check the ignition system (coil, module and wirings)
if you don't have either one then the problem is in the computer system such as crank sensor, and computer itself
If the engine
cranks over normally when you attempt to start you car, but the engine
does not start, the problem may be NO FUEL, NO SPARK or NO COMPRESSION.
The engine needs adequate fuel pressure, a properly timed spark and
normal compression to start.
1) To find why the engine won't
start, remove the air inlet tube from the throttle body, push the
throttle open and spray a small amount of aerosol starting fluid into
the engine. Crank the engine. If it has spark and compression but NO
FUEL, it will start and run a few seconds before dying. If it does NOT
start, it probably has NO SPARK.
2)Another method to check for spark is to pull a spark plug wire
off of a spark plug (if it has plug wires, coil-on-plug ignitions do
not) and place the open end of the plug wire near a metal surface on
the engine. Have a helper crank the engine while you watch for a spark.
DO NOT hold the wire while doing this as it can shock you. If you see a
spark, the problem is not spark, but most likely NO FUEL or NO
COMPRESSION. If you do not see a spark, the problem is in the IGNITION
3)Proper fuel pressure is critical for fuel injected engines
to start and run. You should hear the fuel pump inside the fuel tank
buzz for a couple of seconds when the ignition is turned on (no buzz
means the pump is not running and the engine is not getting fuel). You
can smell the tailpipe for gasoline vapors after cranking the engine.
If you smell gas, the problem is likely not fuel but NO SPARK. You can
also remove the plastic cap and press the schraeder valve test fitting
on the fuel rail to see if there is any fuel pressure to the engine
(not a very accurate test because fuel pressure must be at a certain
level for the engine to start, for that you need a gauge). Even so, no
fuel at the fuel rail would tell you fuel is not getting to the engine..
check to see if your getting spark, if you are make sure your getting fuel. if no spark check coil primary resistance it should be from 1 to 3 ohms. if your not getting spark it can only be a primary ignition problem not a secondary one, example plugs,plug wires. if you are getting spark but no fuel. pull fuel pump relay and jumper wire together #30 and #87 teminals diagnally across from each other under the relay you just pulled out good luck!!!