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Rngrndsfxn
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Feb 22, 2015, 10:26 AM
Post #1 of 25
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2001 ranger no spark
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2001 Ranger has no power to coil pack, used test light on power leads to coil, when cranked no flashing light
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Discretesignals
Ultimate Carjunky
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Feb 22, 2015, 11:01 AM
Post #2 of 25
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Re: 2001 ranger no spark
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Does the check engine light come on when you turn the ignition on?
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Rngrndsfxn
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Feb 22, 2015, 11:54 AM
Post #3 of 25
(2016 views)
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Re: 2001 ranger no spark
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have replaced cam and crank position sensors, did a resistance test on coil pack, with in ford specs, question - the spark lead wires to coil com from the pcm, could a bad ignition switch cause problem? how would I check the switch? could a bad shift position{ neuteral,park} switch cause this issue?
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Discretesignals
Ultimate Carjunky
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Feb 22, 2015, 11:59 AM
Post #4 of 25
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Re: 2001 ranger no spark
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I deleted the other thread you created. Just keep your answers on this thread please.
You didn't answer the question about the check engine light.
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Rngrndsfxn
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Feb 22, 2015, 2:56 PM
Post #5 of 25
(2000 views)
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Re: 2001 ranger no spark
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no check light- no codes have a cheap reader nothing stored
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nickwarner
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Feb 22, 2015, 3:01 PM
Post #6 of 25
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Re: 2001 ranger no spark
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No codes for KOEO test or no communication? Looking for the check engine light is because the PCM is what controls the light and it turns on the bulb at the key on to test it. The bulb could also burn out, but it is a good test to see if the ECM is actually powering up.
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Rngrndsfxn
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Feb 22, 2015, 3:17 PM
Post #7 of 25
(1998 views)
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Re: 2001 ranger no spark
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key on check light work, code reader states no stored codes KOEO
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Rngrndsfxn
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Feb 22, 2015, 5:28 PM
Post #8 of 25
(1985 views)
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Re: 2001 ranger no spark
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did a electric pulse test on several injector control wires, no signal. used multi tester
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Discretesignals
Ultimate Carjunky
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Feb 22, 2015, 5:41 PM
Post #9 of 25
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Re: 2001 ranger no spark
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As Nick stated, making sure you have a check engine light that comes on when you turn the ignition to on means that the engine controller is powered up. That means the EEC relay is being turned on.
Another trick on a Ford is to crank the engine and make sure the check engine light goes out. If it doesn't, that usually means the engine controller isn't seeing an RPM signal.
Which engine does this have?
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Rngrndsfxn
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Feb 22, 2015, 5:52 PM
Post #10 of 25
(1978 views)
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Re: 2001 ranger no spark
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the check light goes out, 4 litre
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Discretesignals
Ultimate Carjunky
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Feb 22, 2015, 5:54 PM
Post #11 of 25
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Re: 2001 ranger no spark
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When you are cranking the engine is the theft indicator flashing?
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Rngrndsfxn
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Feb 22, 2015, 6:38 PM
Post #12 of 25
(1972 views)
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Re: 2001 ranger no spark
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sorry it so long, ate dinner, west coast no the theft light does not flash stays off
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Discretesignals
Ultimate Carjunky
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Feb 22, 2015, 6:58 PM
Post #13 of 25
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Re: 2001 ranger no spark
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The red/light green wire at the ignition coil connector should have battery voltage on it with the key in the on and start positions.
You should have battery voltage on the red wire at the idle air control motor connector with the key on and start positions.
You should have battery voltage at one of the injector connectors on the red wire with the key on and start positions.
Is all that true?
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Rngrndsfxn
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Feb 22, 2015, 7:49 PM
Post #14 of 25
(1964 views)
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Re: 2001 ranger no spark
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both wires on the injector have power , don't know what idle motor is or located
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Discretesignals
Ultimate Carjunky
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Feb 22, 2015, 7:59 PM
Post #15 of 25
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Re: 2001 ranger no spark
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How are you making your checks? With the connector plugged onto the injector and your meter back probed or with the injector connector unplugged and your front probing?
How about the coil's light green/red wire?
The IAC motor sits right on top of the intake next to the EGR valve underneath that black cover .
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Feb 22, 2015, 8:02 PM)
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Rngrndsfxn
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Feb 22, 2015, 8:28 PM
Post #16 of 25
(1954 views)
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Re: 2001 ranger no spark
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injector connector on injector, probing wire
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Discretesignals
Ultimate Carjunky
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Feb 22, 2015, 8:31 PM
Post #17 of 25
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Re: 2001 ranger no spark
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Good...that is how you check circuits. I like that.
How about the coil and IAC?
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Rngrndsfxn
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Feb 22, 2015, 8:39 PM
Post #18 of 25
(1951 views)
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Re: 2001 ranger no spark
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red-green wire has power, have not gone back out yet to check idle motor, give me a few minutes
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Rngrndsfxn
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Feb 22, 2015, 8:46 PM
Post #19 of 25
(1947 views)
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Re: 2001 ranger no spark
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all connections still made, all wires have power
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Discretesignals
Ultimate Carjunky
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Feb 22, 2015, 8:50 PM
Post #20 of 25
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Re: 2001 ranger no spark
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OK...IAC should be alright.
You have power, but your missing control.
This is where it gets complex because when you have no ground control on the injectors or coils by the PCM, you usually start checking your inputs. That means you need to make sure that the PCM is getting cam and crank signals. Now supposedly the PCM is getting a crank signal because the check engine light is going off when your cranking on it, but to verify you would still need to make sure it is getting those signals from the position sensors.
The complex part is normally you would need to use a lab scope or graphing meter to see these signals. If the signals are reaching the PCM, the PCM has good powers and grounds, you have 5 volt reference at certain sensors, and you see battery voltage, but have no ground control at the PCM's connector for the coils and injectors than it is looking at needing a PCM.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Feb 22, 2015, 8:53 PM)
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Rngrndsfxn
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Feb 22, 2015, 8:53 PM
Post #21 of 25
(1942 views)
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Re: 2001 ranger no spark
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I replaced the crank and cam sensors several days ago
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Discretesignals
Ultimate Carjunky
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Feb 22, 2015, 8:59 PM
Post #22 of 25
(1940 views)
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Re: 2001 ranger no spark
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Just because you replace them doesn't mean anything. Why did you replace them? Did you test them and determine they were bad? You could have a wiring issue or something funky going on with the signals that they produce. That is why testing those circuits at the PCM connectors and verifying those signals are reaching the PCM and those signals are correct and in sync is so important.
Hate to see you replace a PCM to find out you had EMI or circuit problems. Seen that happen so many times it isn't funny.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Feb 22, 2015, 9:00 PM)
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Rngrndsfxn
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Feb 22, 2015, 9:03 PM
Post #23 of 25
(1937 views)
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Re: 2001 ranger no spark
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don't know whatEMI stand for, would it be worth having Pcm checked ot, who can do this
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Discretesignals
Ultimate Carjunky
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Feb 22, 2015, 9:21 PM
Post #24 of 25
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Re: 2001 ranger no spark
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Electromagnetic interference
I don't know anyone that can check a PCM unless you take it to an electronics repair shop that specializes in that or you install it in another vehicle, reflash it, and see if the other vehicle has the same symptoms.
The way us drive-ability techs check to see if a PCM is bad is by process of elimination. We test everything outside the PCM: inputs, output, powers, communications, and grounds at the PCM. If everything is there that the PCM needs, but the PCM doesn't react by controlling some type of circuit, the PCM is the only thing that could be causing the issue, so it gets replaced. I can tell you right now you can be thorough making sure everything is there, but never be 100% confident that the PCM is the root problem. You just raise your odds greatly that the PCM is the culprit when you do thorough testing. That is how we fix cars for a living.
It is kind of like doing computer repair work if that relates. You get a computer in your shop that won't turn on. Do you replace the motherboard or the CPU and hope for the best? Or do you unplug all your devices, check for powers and ground from the power supply, check to make sure the board is sending the signal to power supply, the power button functions, you have power from the wall outlet, ect before calling the customer with an estimate on what it would take to repair his puter?
Sorry for the long spiel. Just trying to save you money and heartache.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Rngrndsfxn
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Feb 22, 2015, 10:05 PM
Post #25 of 25
(1927 views)
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Re: 2001 ranger no spark
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at this point I feel it is beyond my abilities. I do appreciate your time. The vehicle is worth about $3,000, can't afford another or a big repair bill. Once again thank you
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