1998 Ford Ranger No Spark - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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  #1  
Old 05-14-2016
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1998 Ford Ranger No Spark

I have replaced:
Fuel Pump
Fuel Filter
Coil
Cam Sensor
Crankshaft Sensor
Ignition Switch

I also have tried Checking all the fuses and I've swapped the Relays around. I don't have any Spark. When I try starting the truck it doesn't start at all. I've ran a OBD2 Diagnostic Tool on it and have gotten the P1000 Trouble Code.
I've been working on this for a week now and still can't figure it out. If anyone has any Idea's please let me know.

Thanks,

-MrBlue51
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Old 05-14-2016
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Welcome to the forum

Assume 3.0l

And 2wd or 4wd?

Automatic or Manual trans?


Do a 50/50 test
Pull off the air tube for the intake manifold
Open throttle and spray some starter fluid or gasoline into the engine

Put tube back on and then try to start engine.

If it fires up then dies you are not getting fuel
If it doesn't fire up then you are not getting spark
50/50

Above is about the only way to test for spark on Ford's waste spark system, spark testers often won't show spark on these systems because of the series wiring and neither does grounding a spark plug.

Or after cranking the engine a few times pull out 1 spark plug it should be wet with fuel if fuel system is working.

Spark is very simple on the 1995+ Rangers
When key is turned on the computer powers up, CEL(check engine light) will come on confirming power up, does CEL come on?
When you crank the engine with starter motor the Tone Ring on the crank(behind main pulley) turns and the CKP sensor will read 35 pulses and 1 gap, the 1 gap = #1 piston at Top Dead Center, this is how the computer times the spark(and fuel injectors).
There must be 35 pulses and 1 gap, tone ring looks like a gear, with 35 teeth and one missing tooth, if a tooth should break off then there would be 2 gaps, so maybe 20 pulses and a gap then 14 pulses and a gap, computer wouldn't start spark or fuel because it needs 35 pulse and 1 gap to know when to start spark.

Once computer has the 35 pulse and 1 gap it will start to Ground the Coil pack to fire the coils in the correct firing order.
Coil pack should get 12volts on 1 wire when key is turned on, the other wires are Grounds that go to computer.


Can you communicate with computer or does it just show 1000?
Unhook battery cable for 2 to 5 minutes and then hook it back up
Try reading codes from computer, no tests
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  #3  
Old 05-14-2016
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Join Date: May 2016
Location: Vancouver
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Quote:
Originally Posted by RonD View Post
Welcome to the forum

Assume 3.0l

And 2wd or 4wd?

Automatic or Manual trans?


Do a 50/50 test
Pull off the air tube for the intake manifold
Open throttle and spray some starter fluid or gasoline into the engine

Put tube back on and then try to start engine.

If it fires up then dies you are not getting fuel
If it doesn't fire up then you are not getting spark
50/50

Above is about the only way to test for spark on Ford's waste spark system, spark testers often won't show spark on these systems because of the series wiring and neither does grounding a spark plug.

Or after cranking the engine a few times pull out 1 spark plug it should be wet with fuel if fuel system is working.

Spark is very simple on the 1995+ Rangers
When key is turned on the computer powers up, CEL(check engine light) will come on confirming power up, does CEL come on?
When you crank the engine with starter motor the Tone Ring on the crank(behind main pulley) turns and the CKP sensor will read 35 pulses and 1 gap, the 1 gap = #1 piston at Top Dead Center, this is how the computer times the spark(and fuel injectors).
There must be 35 pulses and 1 gap, tone ring looks like a gear, with 35 teeth and one missing tooth, if a tooth should break off then there would be 2 gaps, so maybe 20 pulses and a gap then 14 pulses and a gap, computer wouldn't start spark or fuel because it needs 35 pulse and 1 gap to know when to start spark.

Once computer has the 35 pulse and 1 gap it will start to Ground the Coil pack to fire the coils in the correct firing order.
Coil pack should get 12volts on 1 wire when key is turned on, the other wires are Grounds that go to computer.


Can you communicate with computer or does it just show 1000?
Unhook battery cable for 2 to 5 minutes and then hook it back up
Try reading codes from computer, no tests
it's a 1998 Ford Ranger 3.0L 4x4 Manual. I have tried spraying starting fluid in the intake and I am getting gas at the spark plugs there wet. It has 35 teeth on the crankshaft. When I plug in the Diagnostic Tool it just pops up with the P1000 Trouble Code. I have tried taking the battery cables off and also have tried shorting the battery cables across and still nothing.

-MrBlue51.
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  #4  
Old 05-15-2016
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P1000 just means drive cycle tests have not been completed

Follow procedures here: Ford Motor Company Driving Cycle
Once it is drive-able, of course

With gas on the spark plugs CKP sensor is working, but computer is not able to start spark.

1998 Ranger shouldn't have PATS, and it disables fuel not spark, also you would get a rapid flash anti-theft light if it was alarm related issue.

IMO you are looking at a computer issue, pull computer connection off and check it for corrosion, then pull computer out and remove the top to check for burnt circuit board areas.
Computer does use several Grounds which are not shared internally, so if you have done any wiring changes prior to this issue then go back and double check your changes.
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