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  #1  
Old 06-15-2011, 12:21 PM
lvbluesboy lvbluesboy is offline
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Default Starting Issue, Kind of Weird

2005 4.0L SOHC - I hope someone here has a clue about this issue. My Ranger was running just fine and overnight something happened. Instead of starting immediately when you hit the key, it takes 2 to 4 attempts to start. Cranking it does no good. I just hit the key and after a few trys it starts right up and runs. It does act like it is flooded a little and I can smell the gas so that is probably a result and not the problem. It seems like it is ignition electrical related. No codes. No check engine light. Runs great after it starts, but I fear a more severe failure may be coming. If it has been running and is warm. It will restart immediately just like it used to do all the time, but not every time.

Has anyone had this happen? Cleaned and then changed the IAC sensor. Ran Techron fuel injector cleaner through twice. Still the same thing. It seems like the engine is not getting spark immediately. Could that be possible? Ignition coil? or?

Any suggestions would be greatly appreciated!

Last edited by lvbluesboy; 06-15-2011 at 03:55 PM.
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Old 06-15-2011, 12:25 PM
Rango88 Rango88 is offline
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Default Re: Starting Issue, Kind of Weird

I dotn want seem ignorant but its possible thats its related to something simple as battery, plugs or plug wires. Or perhaps an engine coil (i am pretty sure the 4l has coils) In my experience of coils is when they are done, they show signs overnight (when it get cold, humid or wet) or when it rains for the same reason. I would inspect those first, but thats just me.
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Old 06-15-2011, 03:58 PM
lvbluesboy lvbluesboy is offline
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Default Re: Starting Issue, Kind of Weird

Thanks for the thoughts Rango88. The plugs and wires are relatively new and so is the battery.

I am not sure what process generates the initial spark on these computer controlled systems, but there is a coil of some sort. Just not like they used to be.

Like I said, it runs great after it starts. If anything it is running smoother than before this little glitch (or maybe it's just me ).

Any help is appreciated.
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Old 06-15-2011, 04:02 PM
richarddhoward richarddhoward is offline
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Default Re: Starting Issue, Kind of Weird

How many miles? There is an issue with these trucks pooping fuel sending units, and it can cause the same affects.
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Old 06-15-2011, 04:17 PM
iowafx4 iowafx4 is offline
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Default Re: Starting Issue, Kind of Weird

I too am expirencing the same type of problem since i got my 05 fx4 level 2 with the 4.0 litre. Mine has 97,000 miles, and i been using seafoam in the fuel the last few times. My old man is a auto mechanic and thought maybe injectors were a little dirty and bleeding down. It has been getting better though lately after a few treatments of seafoam, but i have also heard of fuel pump issues.
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Old 06-15-2011, 04:35 PM
FordRanger4x4 FordRanger4x4 is offline
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Default Re: Starting Issue, Kind of Weird

With the motor cold, unplug the mass air flow sensor and see if it starts better. If so your maf is going bad.
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  #7  
Old 06-16-2011, 10:11 AM
lvbluesboy lvbluesboy is offline
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Default Re: Starting Issue, Kind of Weird

The truck has 104,000 miles on it. I take real good care of it. Sythetic oil changed every 3-4000 miles etc. Filters changed, you name it.

It's just starting to get a little older like me.

Thanks for the tip FordRanger4X4. I will check out the MAF.

It's just so weird that it happened overnight.
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  #8  
Old 06-16-2011, 12:34 PM
lvbluesboy lvbluesboy is offline
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Thumbs up Re: Starting Issue, Kind of Weird

It is the MAF sensor. Did what was suggested and the truck starts right up!

Can the sensor be cleaned or does it need to be replaced? Either way will work for me, but cleaning is a lot cheaper!

Additional: Just read that the MAF can be cleaned! Maybe that will work. Put it in a bag with isopropyl alcolhol (70/30 mix) and swish it around real good for a minute or so. Leave it in the bag for about 20 minutes to work loose all the grime from the sensor wires. Empty the bag out and place the sensor on paper towels to dry for an hour or so. Get it dry! that should do the trick. If not, you are probably going to need to purchase a new one, but this is definitely worth a try.

I'll let you all know if cleaning works.

Hmmmmm. Also found an article from this forum (sorry, didn't get the link) about how to clean the 2005 MAF. There is MAF cleaner available at auto parts stores. Supposidly safe and quicker. Might check that out. I'll let you know how it turns out either way.

Last edited by lvbluesboy; 06-17-2011 at 11:44 AM.
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  #9  
Old 06-17-2011, 06:29 AM
SalRanger2 SalRanger2 is offline
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Default Re: Starting Issue, Kind of Weird

glad you found the problem.

ive heard of vehicles sometimes needing you turn the key to the on position for a few seconds to build up pressure from the fuel pump, then turn to start. but could be totally different for some of your guys trucks
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  #10  
Old 06-17-2011, 12:02 PM
FordRanger4x4 FordRanger4x4 is offline
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Default Re: Starting Issue, Kind of Weird

Glad I could help. I have seen mass air flow sensors go bad and not set the cel. It`s called an in range failure. I would just get a new one if you can. Just my opinion.
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  #11  
Old 06-19-2011, 01:59 PM
lvbluesboy lvbluesboy is offline
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Default Re: Starting Issue, Kind of Weird

Well, sadly a new MAF did not actually solve the problem. Although unplugging it did allow the truck to start immediately, a repeat would cause the starting issue to reappear and the MAF failure code would cause the check engine light to appear.

Plug the new MAF back in, reset the ECM and all is good again except for the same old won't start right away issue.

I really wish that had been it. So now I have replaced the IAC and MAF to no avail except that I have spent about $180. At least I still have the older IAC. Had to give up the original MAF as a core.

So now where do I go from here? No codes, no check engine light, just the won't start right away gig. Runs great after it starts and the engine is definitely getting fuel. Seems like the initial spark just isn't there.

In the old days, I would have said replace the coil, since an initial charge had to build before sufficient spark would occur. Does that happen in the newer vehicles with the ECM computer control?

I am half temped to replace the coil module, but am hesitant that it would be another waste of money.

Advise?
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  #12  
Old 06-19-2011, 07:57 PM
iowafx4 iowafx4 is offline
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Default Re: Starting Issue, Kind of Weird

like i said above , i''m having pretty much the same problem, but really haven't had the time to diagnose it. My father has helped point me in different directions, things i'm going to test, possible coolant temp sensor, i've heard a crank sensor can cause this problem, or fuel related delivery problem. I usually have to turn the key on and off 2-3 times and it would start right up i'll keep ya posted
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  #13  
Old 06-20-2011, 05:21 AM
lvbluesboy lvbluesboy is offline
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Default Re: Starting Issue, Kind of Weird

iowafx4,

Don't know if you have read the other post about the starting issue, but it may apply. It appears that it does in my situation.

Fuel check valve. Part of the fuel pump assembly I believe now. Look at the other thread and follow the suggesting about testing the theory with the "run" position on the ignition key.

I can start my truck every time now, but of course that doesn't fix the problem.

Haven't looked at cost or what's involved in replacing the pump, but that may be what has to be done to fix the issue.

Check it out and let us know.

Last edited by lvbluesboy; 06-20-2011 at 05:22 AM. Reason: spelling duh
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  #14  
Old 06-20-2011, 04:59 PM
iowafx4 iowafx4 is offline
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Default Re: Starting Issue, Kind of Weird

yep i've thought this from the beginning just was testing for some of the small things first, i can aways start mine, if i turn the key off and on a couple times, so that would almost comfirm the fuel pump
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  #15  
Old 06-21-2011, 11:45 AM
lvbluesboy lvbluesboy is offline
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Default Re: Starting Issue, Kind of Weird

Done a little pricing on the pump. They don't give those things away! Anywhere from about $250 to over $400.

Not sure if I want to replace that bad boy at this point. I also want to check and see exactly what is involved before attempting it myself or taking it to the dealer.
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